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Week 1: Compulsory Section BH3

BH3 optimization

The optimization of BH3 was carried out by the GaussView calculation with the following settings:

Calculation settings for BH3.

Molecule

BH molecule

Summary

Summary of BH3 molecule.

Output information

        Item               Value     Threshold  Converged?
Maximum Force            0.000090     0.000450     YES
RMS     Force            0.000059     0.000300     YES
Maximum Displacement     0.000352     0.001800     YES
RMS     Displacement     0.000230     0.001200     YES
Predicted change in Energy=-4.580970D-08
Optimization completed.
   -- Stationary point found.
                          ----------------------------
                          !   Optimized Parameters   !
                          ! (Angstroms and Degrees)  !
--------------------------                            --------------------------
! Name  Definition              Value          Derivative Info.                !
--------------------------------------------------------------------------------
! R1    R(1,2)                  1.1945         -DE/DX =   -0.0001              !
! R2    R(1,3)                  1.1945         -DE/DX =   -0.0001              !
! R3    R(1,4)                  1.1945         -DE/DX =   -0.0001              !
! A1    A(2,1,3)              120.0            -DE/DX =    0.0                 !
! A2    A(2,1,4)              120.0            -DE/DX =    0.0                 !
! A3    A(3,1,4)              120.0            -DE/DX =    0.0                 !
! D1    D(2,1,4,3)            180.0            -DE/DX =    0.0                 !
--------------------------------------------------------------------------------
GradGradGradGradGradGradGradGradGradGradGradGradGradGradGradGradGradGrad

Bond information

BH3 bond distance and angle
Bond Distance 1.19453 Å
Bond Angle 120.000

File link

File:BH3 OPT 321G.LOG

BH3 optimization with 6-31G(d,p) basis set

The optimization with better basis set of BH3 was carried out by the GaussView calculation with the following settings:

Calculation settings for BH3 with better basis.

Molecule

BH3 with 6-31G(d,p) basis set

Summary

Summary of BH3 molecule with better basis set.

Output information

        Item               Value     Threshold  Converged?
Maximum Force            0.000006     0.000450     YES
RMS     Force            0.000004     0.000300     YES
Maximum Displacement     0.000024     0.001800     YES
RMS     Displacement     0.000015     0.001200     YES
Predicted change in Energy=-1.980661D-10
Optimization completed.
   -- Stationary point found.
                          ----------------------------
                          !   Optimized Parameters   !
                          ! (Angstroms and Degrees)  !
--------------------------                            --------------------------
! Name  Definition              Value          Derivative Info.                !
--------------------------------------------------------------------------------
! R1    R(1,2)                  1.1923         -DE/DX =    0.0                 !
! R2    R(1,3)                  1.1923         -DE/DX =    0.0                 !
! R3    R(1,4)                  1.1923         -DE/DX =    0.0                 !
! A1    A(2,1,3)              120.0002         -DE/DX =    0.0                 !
! A2    A(2,1,4)              120.0002         -DE/DX =    0.0                 !
! A3    A(3,1,4)              119.9997         -DE/DX =    0.0                 !
! D1    D(2,1,4,3)            180.0            -DE/DX =    0.0                 !
--------------------------------------------------------------------------------
GradGradGradGradGradGradGradGradGradGradGradGradGradGradGradGradGradGrad

Bond information

BH3 bond distance and bond angle
Bond Distance 1.19232 Å
Bond Angle 120.000

File link

File:WENMIN BH3 OPT 631G DP.LOG

Total energy of BH3

Total energy of 3-21G optimized BH3: E = -26.46226433 a.u.

Total energy of 6-31G optimized BH3: E = -26.61532374 a.u.

TlBr3 optimization

The optimization with restricted symmetry of TlBr3 was carried out by the HPC with the following settings:

Point group Symmetry for TlBr3.
Calculation settings for TlBr3.

Molecule

TlBr molecule

Summary

Summary of TlBr3 molecule.

Output information

        Item               Value     Threshold  Converged?
Maximum Force            0.000002     0.000450     YES
RMS     Force            0.000001     0.000300     YES
Maximum Displacement     0.000022     0.001800     YES
RMS     Displacement     0.000014     0.001200     YES
Predicted change in Energy=-6.083028D-11
Optimization completed.
   -- Stationary point found.
                          ----------------------------
                          !   Optimized Parameters   !
                          ! (Angstroms and Degrees)  !
--------------------------                            --------------------------
! Name  Definition              Value          Derivative Info.                !
--------------------------------------------------------------------------------
! R1    R(1,2)                  2.651          -DE/DX =    0.0                 !
! R2    R(1,3)                  2.651          -DE/DX =    0.0                 !
! R3    R(1,4)                  2.651          -DE/DX =    0.0                 !
! A1    A(2,1,3)              120.0            -DE/DX =    0.0                 !
! A2    A(2,1,4)              120.0            -DE/DX =    0.0                 !
! A3    A(3,1,4)              120.0            -DE/DX =    0.0                 !
! D1    D(2,1,4,3)            180.0            -DE/DX =    0.0                 !
--------------------------------------------------------------------------------
GradGradGradGradGradGradGradGradGradGradGradGradGradGradGradGradGradGrad

Bond information

TlBr3 bond distance and bond angle
Bond Distance 2.65095 Å
Bond Angle 120.000

Compared with the literature value[1], Tl-Br distance of 2.512 Å, the bond distance optimized by the GaussView is a little larger.

File link

DOI:10042/to-https://spectradspace.lib.imperial.ac.uk:8443/dspace/handle/10042/20479

BBr3 optimization

The optimization of BBr3 was carried out by the GaussView calculation with the following settings:

Calculation settings for BBr3.

Molecule

BBr molecule

Summary

Summary of BBr3 molecule.

Output information

        Item               Value     Threshold  Converged?
Maximum Force            0.000008     0.000450     YES
RMS     Force            0.000005     0.000300     YES
Maximum Displacement     0.000036     0.001800     YES
RMS     Displacement     0.000024     0.001200     YES
Predicted change in Energy=-4.098023D-10
Optimization completed.
   -- Stationary point found.
                          ----------------------------
                          !   Optimized Parameters   !
                          ! (Angstroms and Degrees)  !
--------------------------                            --------------------------
! Name  Definition              Value          Derivative Info.                !
--------------------------------------------------------------------------------
! R1    R(1,2)                  1.934          -DE/DX =    0.0                 !
! R2    R(1,3)                  1.9339         -DE/DX =    0.0                 !
! R3    R(1,4)                  1.934          -DE/DX =    0.0                 !
! A1    A(2,1,3)              120.0022         -DE/DX =    0.0                 !
! A2    A(2,1,4)              119.9956         -DE/DX =    0.0                 !
! A3    A(3,1,4)              120.0022         -DE/DX =    0.0                 !
! D1    D(2,1,4,3)            180.0            -DE/DX =    0.0                 !
--------------------------------------------------------------------------------
GradGradGradGradGradGradGradGradGradGradGradGradGradGradGradGradGradGrad

Bond information

BBr3 bond distance and bond angle
Bond Distance 1.93394 Å
Bond Angle 120.000

File link

File:WENMIN BBR3 OPT GEN.LOG

Comparison of BH3, BBr3 and TlBr3 optimization

Bond distance comparison
BH3 1.19232 Å
BBr3 1.93394 Å
TlBr3 2.65095 Å

It is shown that the bond length increases down the table. The equilibrium bond length in a molecule is the distance between the centers of the two bonded atoms.[2] To a reasonable approximation, the bond length can be partitioned into the radius contributions from each atom. From BH3 ligand to BBr3 ligand, the size of Br atom is larger than that of H atom, leading to a longer bond. Similarly, changing central element from BBr3 to TlBr3, the bond length increases due to larger size of Tl atom (the atom size increases down the group e.g. B<Al<Ga<In<Tl).

Both H and B atoms are small. However, H atom has only one (valence) electron while B atom has five electrons (three valence electrons). The fist ionization energy of H atom is larger than that of B atom (H: 1312 kJ/mol; B: 801 kJ/mol). [3] This is because the valence electron of B atom is further away from the nucleus and experiences a relatively weaker Coulombic attraction, when compared with H atom.

B atom and Tl atom belong to the same group - Group 13. They both have one valence electron, but they differ in many ways. Boron is nonmetallic while thallium is metallic. B has higher first ionization energy than Tl because B is small atom with electrons being closer to the nucleus and experiencing stronger Coulombic attracting. Generally, the ionization energy decreases down the group. Boron has a very high melting point.

Sometimes GaussView doesn't display bonds where we expect, it doesn't necessarily mean that there's no bond. GaussView draws bonds based on a distance critera. When there's no bond, it could be due to that the bond distance exceeds a pre-defined value. Bond is attraction among atoms or molecules. Atoms or molecules either share or donate electrons, or in other means, to achieve most stable configuration (e.g. Octet rule, 18-electron rule) while forming the bond.

BH3 frequency

The frequency calculation of BH3 molecule was carried out by the GaussView with the following settings:

Calculation settings for BH3.

Summary

Summary of BH3 molecule.

Output information

Low frequencies ---  -19.0010    0.0007    0.0009    0.0009   12.0258   12.0968
Low frequencies --- 1162.9746 1213.1729 1213.2338
Harmonic frequencies (cm**-1), IR intensities (KM/Mole), Raman scattering
activities (A**4/AMU), depolarization ratios for plane and unpolarized
incident light, reduced masses (AMU), force constants (mDyne/A),
and normal coordinates:
                    1                      2                      3
                    A                      A                      A
Frequencies --  1162.9746              1213.1729              1213.2338
Red. masses --     1.2531                 1.1072                 1.1072
Frc consts  --     0.9986                 0.9601                 0.9602
IR Inten    --    92.5518                14.0571                14.0606
 Atom  AN      X      Y      Z        X      Y      Z        X      Y      Z
    1   5     0.00   0.00   0.16     0.00   0.10   0.00    -0.10   0.00   0.00
    2   1     0.00   0.00  -0.57     0.00   0.08   0.00     0.81   0.00   0.00
    3   1     0.00   0.00  -0.57     0.39  -0.59   0.00     0.14  -0.39   0.00
    4   1     0.00   0.00  -0.57    -0.39  -0.59   0.00     0.14   0.39   0.00
                    4                      5                      6
                    A                      A                      A
Frequencies --  2582.2780              2715.4300              2715.4555
Red. masses --     1.0078                 1.1273                 1.1273
Frc consts  --     3.9595                 4.8976                 4.8977
IR Inten    --     0.0000               126.3279               126.3232
 Atom  AN      X      Y      Z        X      Y      Z        X      Y      Z
    1   5     0.00   0.00   0.00     0.11   0.00   0.00     0.00   0.11   0.00
    2   1     0.00  -0.58   0.00     0.02   0.00   0.00     0.00  -0.81   0.00
    3   1     0.50   0.29   0.00    -0.60  -0.36   0.00    -0.36  -0.19   0.00
    4   1    -0.50   0.29   0.00    -0.60   0.36   0.00     0.36  -0.19   0.00

Summary of motion, frequency and intensity of each vibration

No. Form of the vibration Frequency Intensity Symmetry point group
1
B is stationary while all H atoms move in and out together along arrows (wagging)
1162.97 92.5518 a'2
2
B and H2 are stationary while H3 and H4 move in and out together along arrows (symmetrical stretching)
1213.17 14.0571 e'
3
B is stationary while all H atoms move in and out together along arrows
1213.23 14.0606 e'
4
B is stationary while all H atoms move in and out together in a concerted motion (symmetrical stretching)
2582.28 0.0000 a'1
5
B and H2 are stationary while H1 and H3 move in and out together in opposite direction along arrows (asymmetrical stretching)
2715.43 126.3279 e'
6
B is stationary while all H atoms move in and out of plane together along arrows (H2 moves in opposite direction as H3 and H4)
2715.46 126.3232 e'

IR spectrum

IR spectrum of BH3 molecule.

There are six vibrations but only three peaks. Look at the intensity. The intensity of vibration 3 is 0, which shows no peak on the IR spectrum. As for vibration 2&3 and 5&6, these two pairs have very similar peak intensity. They overlap on the spectrum, showing as "one peak" each.

File link

File:WENMIN BH3 FREQ.LOG

TlBr3 frequency

The frequency calculation of TlBr3 molecule was carried out by the HPC with the following settings:

Calculation settings for TlBr3.

Summary

Summary of TlBr3 molecule.

Output information

Low frequencies ---   -3.4213   -0.0026   -0.0004    0.0015    3.9367    3.9367
Low frequencies ---   46.4289   46.4292   52.1449
Harmonic frequencies (cm**-1), IR intensities (KM/Mole), Raman scattering
activities (A**4/AMU), depolarization ratios for plane and unpolarized
incident light, reduced masses (AMU), force constants (mDyne/A),
and normal coordinates:
                    1                      2                      3
                   E'                     E'                     A2"
Frequencies --    46.4289                46.4292                52.1449
Red. masses --    88.4613                88.4613               117.7209
Frc consts  --     0.1124                 0.1124                 0.1886
IR Inten    --     3.6867                 3.6867                 5.8466
 Atom  AN      X      Y      Z        X      Y      Z        X      Y      Z
    1  81     0.00   0.28   0.00    -0.28   0.00   0.00     0.00   0.00   0.55
    2  35     0.00   0.26   0.00     0.74   0.00   0.00     0.00   0.00  -0.48
    3  35     0.43  -0.49   0.00    -0.01  -0.43   0.00     0.00   0.00  -0.48
    4  35    -0.43  -0.49   0.00    -0.01   0.43   0.00     0.00   0.00  -0.48
                    4                      5                      6
                   A1'                    E'                     E'
Frequencies --   165.2685               210.6948               210.6948
Red. masses --    78.9183               101.4032               101.4032
Frc consts  --     1.2700                 2.6522                 2.6522
IR Inten    --     0.0000                25.4830                25.4797
 Atom  AN      X      Y      Z        X      Y      Z        X      Y      Z
    1  81     0.00   0.00   0.00     0.42   0.00   0.00     0.00   0.42   0.00
    2  35     0.00  -0.58   0.00     0.01   0.00   0.00     0.00  -0.74   0.00
    3  35     0.50   0.29   0.00    -0.55  -0.32   0.00    -0.32  -0.18   0.00
    4  35    -0.50   0.29   0.00    -0.55   0.32   0.00     0.32  -0.18   0.00

Summary of motion, frequency and intensity of each vibration

No. Form of the vibration Frequency Intensity
1
All atoms are moving in and out together along arrows (Tl and Br2 move in same direction, Br3 and Br4 move in same direction)
46.43 3.6867
2
All atoms are moving in and out together along arrows (Tl and Br2 move in opposite direction, Br3 and Br4 move in opposite direction)
46.43 3.6867
3
All atoms are moving in and out together along arrows (Tl and Br2 move in opposite direction, Br3 and Br4 move in same direction)
52.14 5.8466
4
Tl is stationary while all Br atoms move in and out together in a concerted motion (symmetrical strethcing)
165.27 0.0000
5
Br2 is stationary while other three atoms move in and out together along arrows (Br3 and Br4 move in opposite direction)
210.69 25.4830
6
All atoms are moving in and out together along arrows (Tl and Br2 move in opposite direction, Br3 and Br4 move in same direction)
210.69 25.4797

IR spectrum

IR spectrum of TlBr3 molecule.

File link

DOI:10042/to-https://spectradspace.lib.imperial.ac.uk:8443/dspace/handle/10042/20490

Comparison of BH3 and TlBr3 frequency

Vibrational frequency comparison
No. BH3 TlBr3
1 1162.97 46.43
2 1213.17 46.43
3 1213.23 52.14
4 2582.28 165.27
5 2715.43 210.69
6 2715.46 210.69

The frequency of BH3 is lower than that of TlBr3. This is due to weaker bond of TlBr3. Both Tl and Br atoms are large so they are further away from the nucleus and experience weaker Coulomb attraction, resulting in a weaker bond. Hence TlBr3 has lower frequencies.

Both have six mode vibrations, but only three peaks with reasons stated above. There's a reordering of modes. BH3 has its lowest frequency at a'2 (mode 1) while TlBr3 has its lowest frequency at degenerate mode 1 and 2. Additionally, both of them have zero intensity for a'1 (mode 4).

Q&A

Why must you use the same method and basis set for both the optimization and frequency analysis calculations?

Under different method or basis set, the calculation from GaussView differs significantly. Take BH3 as an example, the energy under 3-21G basis set is -26.46226433 a.u. and the energy under 6-31G basis set is -26.61532374 a.u. The difference is 0.15305941 a.u., which is 401.86 kJ/mol. Comparing results under different settings is meaningless and worthless.

What is the purpose of carrying out a frequency analysis?

When we're doing the optimization calculation, we are doing the first derivative of the potential energy surface, which tells us the maximum (transition state) and minimum (ground state) with zero slope. However, we don't know which one is the maximum or minimum. That's when we need to take the second derivative to determine. When the second derivative is positive, we get a minimum and maximum if the second derivative is negative. What frequency analysis is mainly calculation of the second derivative. So if the frequencies are all positive, that indicates we have a minimum. If one of them is negative, we have a transition state. When there's more than one negative frequencies, it means unsuccessful finding of a critical point, indicating a failed optimization calculation. So frequency analysis checks the result of optimization. It also provide IR spectrum and Raman modes that are helpful.

What do the "Low frequencies" represent?

"Low frequencies" is an kind of indicator of the tightness of optimization. The low frequencies should be close to zero. If they are not close to zero, it may be a signal that we need to do a tighter optimization.

BH3 Molecular orbitals

MOs of BH3

MO diagram of BH3 molecule.

Real MOs

MOs from GaussView
a'1 e' e' a'2'

File link

DOI:10042/to-https://spectradspace.lib.imperial.ac.uk:8443/dspace/handle/10042/20520

NH3 Molecular orbitals

The optimization and frequency calculation of TlBr3 molecule was carried out by the GaussView.

Molecule

NH molecule

Summary

Optimization summary of NH3 molecule.
Frequency summary of NH3 molecule.

Output information

Optimization output information
        Item               Value     Threshold  Converged?
Maximum Force            0.000024     0.000450     YES
RMS     Force            0.000012     0.000300     YES
Maximum Displacement     0.000079     0.001800     YES
RMS     Displacement     0.000053     0.001200     YES
Predicted change in Energy=-1.629731D-09
Optimization completed.
   -- Stationary point found.
                          ----------------------------
                          !   Optimized Parameters   !
                          ! (Angstroms and Degrees)  !
--------------------------                            --------------------------
! Name  Definition              Value          Derivative Info.                !
--------------------------------------------------------------------------------
! R1    R(1,2)                  1.018          -DE/DX =    0.0                 !
! R2    R(1,3)                  1.018          -DE/DX =    0.0                 !
! R3    R(1,4)                  1.018          -DE/DX =    0.0                 !
! A1    A(2,1,3)              105.7413         -DE/DX =    0.0                 !
! A2    A(2,1,4)              105.7486         -DE/DX =    0.0                 !
! A3    A(3,1,4)              105.7479         -DE/DX =    0.0                 !
! D1    D(2,1,4,3)           -111.8631         -DE/DX =    0.0                 !
--------------------------------------------------------------------------------
GradGradGradGradGradGradGradGradGradGradGradGradGradGradGradGradGradGrad
Frequency output information
Low frequencies ---  -30.7014    0.0010    0.0015    0.0022   20.2662   28.2997
Low frequencies --- 1089.5562 1694.1246 1694.1863

IR spectrum

IR spectrum of NH3 molecule.

Charge distribution

Charge distribution (color) of NH3 molecule.
Charge distribution (number) of NH3 molecule.

NBO analysis

Natural populations
Summary of Natural Population Analysis:                 
                                                        
                                      Natural Population
               Natural  -----------------------------------------------
   Atom  No    Charge         Core      Valence    Rydberg      Total
-----------------------------------------------------------------------
     N    1   -1.12515      1.99982     6.11104    0.01429     8.12515
     H    2    0.37505      0.00000     0.62250    0.00246     0.62495
     H    3    0.37505      0.00000     0.62250    0.00246     0.62495
     H    4    0.37505      0.00000     0.62249    0.00246     0.62495
=======================================================================
  * Total *    0.00000      1.99982     7.97852    0.02166    10.00000
Bond orbital
                      Occupancies       Lewis Structure    Low   High
          Occ.    -------------------  -----------------   occ   occ
 Cycle   Thresh.   Lewis   Non-Lewis     CR  BD  3C  LP    (L)   (NL)   Dev
=============================================================================
  1(1)    1.90     9.99429   0.00571      1   3   0   1     0      0    0.00
-----------------------------------------------------------------------------
Structure accepted: No low occupancy Lewis orbitals
--------------------------------------------------------
  Core                      1.99982 ( 99.991% of   2)
  Valence Lewis             7.99447 ( 99.931% of   8)
 ==================       ============================
  Total Lewis               9.99429 ( 99.943% of  10)
 -----------------------------------------------------
  Valence non-Lewis         0.00000 (  0.000% of  10)
  Rydberg non-Lewis         0.00571 (  0.057% of  10)
 ==================       ============================
  Total non-Lewis           0.00571 (  0.057% of  10)
--------------------------------------------------------


      (Occupancy)   Bond orbital/ Coefficients/ Hybrids
---------------------------------------------------------------------------------
    1. (1.99909) BD ( 1) N   1 - H   2 
               ( 68.83%)   0.8297* N   1 s( 24.87%)p 3.02( 75.05%)d 0.00(  0.09%)
                                          -0.0001 -0.4986 -0.0059  0.0000 -0.2910
                                           0.0052  0.8155  0.0277  0.0000  0.0000
                                           0.0281  0.0000  0.0000  0.0032  0.0082
               ( 31.17%)   0.5583* H   2 s( 99.91%)p 0.00(  0.09%)
                                          -0.9996  0.0000  0.0072 -0.0289  0.0000
    2. (1.99909) BD ( 1) N   1 - H   3 
               ( 68.83%)   0.8297* N   1 s( 24.86%)p 3.02( 75.05%)d 0.00(  0.09%)
                                           0.0001  0.4986  0.0059  0.0000  0.2910
                                          -0.0052  0.4077  0.0138  0.7062  0.0240
                                           0.0140  0.0243  0.0076  0.0033  0.0031
               ( 31.17%)   0.5583* H   3 s( 99.91%)p 0.00(  0.09%)
                                           0.9996  0.0000 -0.0072 -0.0145 -0.0250
    3. (1.99909) BD ( 1) N   1 - H   4 
               ( 68.83%)   0.8297* N   1 s( 24.87%)p 3.02( 75.05%)d 0.00(  0.09%)
                                           0.0001  0.4986  0.0059  0.0000  0.2909
                                          -0.0052  0.4077  0.0138 -0.7062 -0.0239
                                           0.0140 -0.0243 -0.0076  0.0033  0.0031
               ( 31.17%)   0.5583* H   4 s( 99.91%)p 0.00(  0.09%)
                                           0.9996  0.0000 -0.0072 -0.0145  0.0250
    4. (1.99982) CR ( 1) N   1           s(100.00%)
                                           1.0000 -0.0002  0.0000  0.0000  0.0000
                                           0.0000  0.0000  0.0000  0.0000  0.0000
                                           0.0000  0.0000  0.0000  0.0000  0.0000
    5. (1.99721) LP ( 1) N   1           s( 25.38%)p 2.94( 74.52%)d 0.00(  0.10%)
                                           0.0001  0.5036 -0.0120  0.0000 -0.8618
                                           0.0505  0.0000  0.0000  0.0000  0.0000
                                           0.0000  0.0000  0.0000 -0.0269  0.0155
    6. (0.00000) RY*( 1) N   1           s( 99.98%)p 0.00(  0.02%)d 0.00(  0.00%)
    7. (0.00000) RY*( 2) N   1           s(100.00%)
Second order perturbation theory analysis of Fock Matrix in NBO basis
Second Order Perturbation Theory Analysis of Fock Matrix in NBO Basis
    Threshold for printing:   0.50 kcal/mol
                                                                             E(2)  E(j)-E(i) F(i,j)
        Donor NBO (i)                     Acceptor NBO (j)                 kcal/mol   a.u.    a.u.
===================================================================================================
within unit  1
  5. LP (   1) N   1                / 16. RY*(   1) H   2                    1.01    1.43    0.034
  5. LP (   1) N   1                / 17. RY*(   2) H   2                    0.67    2.17    0.034
  5. LP (   1) N   1                / 20. RY*(   1) H   3                    1.01    1.43    0.034
  5. LP (   1) N   1                / 21. RY*(   2) H   3                    0.67    2.17    0.034
  5. LP (   1) N   1                / 24. RY*(   1) H   4                    1.01    1.43    0.034
  5. LP (   1) N   1                / 25. RY*(   2) H   4                    0.67    2.17    0.034
Natural bond orbital
Natural Bond Orbitals (Summary):
                                                           Principal Delocalizations
          NBO                        Occupancy    Energy   (geminal,vicinal,remote)
====================================================================================
Molecular unit  1  (H3N)
    1. BD (   1) N   1 - H   2          1.99909    -0.60417  
    2. BD (   1) N   1 - H   3          1.99909    -0.60417  
    3. BD (   1) N   1 - H   4          1.99909    -0.60416  
    4. CR (   1) N   1                  1.99982   -14.16768  
    5. LP (   1) N   1                  1.99721    -0.31756  24(v),16(v),20(v),17(v)
                                                   21(v),25(v)
    6. RY*(   1) N   1                  0.00000     1.20799  
    7. RY*(   2) N   1                  0.00000     3.73005

Bond information

NH3 bond distance and angle
Bond Distance 1.01797 Å
Bond Angle 105.748

File link

Optimization:File:WENMIN NH3 OPT 631G.LOG

Frequency:File:WENMIN NH3 FREQ.LOG

NBO:File:WENMIN NH3 ENERGY FULLNBO.LOG

NH3BH3 analysis

The optimization and frequency calculation of NH3BH3 molecule was carried out by the GaussView.

Molecule

NHBH molecule

Summary

Optimization summary of NH3BH3 molecule.
Frequency summary of NH3BH3 molecule.

Output information

Optimization output information
        Item               Value     Threshold  Converged?
Maximum Force            0.000137     0.000450     YES
RMS     Force            0.000063     0.000300     YES
Maximum Displacement     0.000606     0.001800     YES
RMS     Displacement     0.000336     0.001200     YES
Predicted change in Energy=-1.994008D-07
Optimization completed.
   -- Stationary point found.
                          ----------------------------
                          !   Optimized Parameters   !
                          ! (Angstroms and Degrees)  !
--------------------------                            --------------------------
! Name  Definition              Value          Derivative Info.                !
--------------------------------------------------------------------------------
! R1    R(1,8)                  1.0186         -DE/DX =   -0.0001              !
! R2    R(2,8)                  1.0186         -DE/DX =   -0.0001              !
! R3    R(3,8)                  1.0186         -DE/DX =   -0.0001              !
! R4    R(4,7)                  1.2101         -DE/DX =   -0.0001              !
! R5    R(5,7)                  1.2101         -DE/DX =   -0.0001              !
! R6    R(6,7)                  1.2101         -DE/DX =   -0.0001              !
! R7    R(7,8)                  1.668          -DE/DX =   -0.0001              !
! A1    A(4,7,5)              113.8693         -DE/DX =    0.0                 !
! A2    A(4,7,6)              113.8721         -DE/DX =    0.0                 !
! A3    A(4,7,8)              104.6003         -DE/DX =    0.0                 !
! A4    A(5,7,6)              113.8747         -DE/DX =    0.0                 !
! A5    A(5,7,8)              104.6003         -DE/DX =    0.0                 !
! A6    A(6,7,8)              104.5984         -DE/DX =    0.0                 !
! A7    A(1,8,2)              107.87           -DE/DX =    0.0                 !
! A8    A(1,8,3)              107.8652         -DE/DX =    0.0                 !
! A9    A(1,8,7)              111.0329         -DE/DX =    0.0                 !
! A10   A(2,8,3)              107.8697         -DE/DX =    0.0                 !
! A11   A(2,8,7)              111.0286         -DE/DX =    0.0                 !
! A12   A(3,8,7)              111.0291         -DE/DX =    0.0                 !
! D1    D(4,7,8,1)           -179.9867         -DE/DX =    0.0                 !
! D2    D(4,7,8,2)            -59.9839         -DE/DX =    0.0                 !
! D3    D(4,7,8,3)             60.0161         -DE/DX =    0.0                 !
! D4    D(5,7,8,1)            -59.9892         -DE/DX =    0.0                 !
! D5    D(5,7,8,2)             60.0136         -DE/DX =    0.0                 !
! D6    D(5,7,8,3)           -179.9864         -DE/DX =    0.0                 !
! D7    D(6,7,8,1)             60.0135         -DE/DX =    0.0                 !
! D8    D(6,7,8,2)           -179.9837         -DE/DX =    0.0                 !
! D9    D(6,7,8,3)            -59.9837         -DE/DX =    0.0                 !
--------------------------------------------------------------------------------
GradGradGradGradGradGradGradGradGradGradGradGradGradGradGradGradGradGrad
Frequency output information
Low frequencies ---    0.0002    0.0016    0.0018   17.2632   22.6336   39.3248
Low frequencies ---  265.9469  632.3805  639.0805

IR spectrum

IR spectrum of NH3BH3 molecule.

Bond information

Ammonia-Borane molecule.
NH3BH3 bond distance and angle
Bond Distance N-B 1.66803 Å
Bond Distance N-H 1.01861 Å
Bond Distance B-H 1.21007 Å
Bond Angle H-N-B 111.029
Bond Angle H-B-N 104.600
Bond Angle H-N-H 107.870
Bond Angle H-B-H 113.875

Energy calculation

E(NH3) = -56.55776856 a.u.

E(BH3) = -26.61532374 a.u.

E(NH3BH3) = -83.22468918 a.u.

ΔE = E(NH3BH3)-[E(NH3)-E(BH3)] = -83.22468918-[(-56.55776856)+(-26.46226433)] = -0.05159688 a.u. = -135.4676084 kJ/mol

File link

Optimization:File:WENMIN NH3BH3 OPT 631G DP.LOG

Frequency:File:WENMIN NH3BH3 FREQ.LOG

Week 2: Mini Project Investigating aromaticity

Benzene

The optimization, frequency and NBO calculation of benzene molecule was carried out by the HPC.

Molecule

Benzene molecule

Summary

Optimization summary of benzene molecule.
Frequency summary of benzene molecule.

Output information

Optimization output information
        Item               Value     Threshold  Converged?
Maximum Force            0.000204     0.000450     YES
RMS     Force            0.000084     0.000300     YES
Maximum Displacement     0.000870     0.001800     YES
RMS     Displacement     0.000313     0.001200     YES
Predicted change in Energy=-4.983462D-07
Optimization completed.
   -- Stationary point found.
                          ----------------------------
                          !   Optimized Parameters   !
                          ! (Angstroms and Degrees)  !
--------------------------                            --------------------------
! Name  Definition              Value          Derivative Info.                !
--------------------------------------------------------------------------------
! R1    R(1,2)                  1.3963         -DE/DX =    0.0001              !
! R2    R(1,6)                  1.3961         -DE/DX =    0.0002              !
! R3    R(1,7)                  1.0861         -DE/DX =    0.0002              !
! R4    R(2,3)                  1.3961         -DE/DX =    0.0002              !
! R5    R(2,8)                  1.0861         -DE/DX =    0.0002              !
! R6    R(3,4)                  1.3963         -DE/DX =    0.0001              !
! R7    R(3,9)                  1.0861         -DE/DX =    0.0002              !
! R8    R(4,5)                  1.3961         -DE/DX =    0.0002              !
! R9    R(4,10)                 1.0861         -DE/DX =    0.0002              !
! R10   R(5,6)                  1.3963         -DE/DX =    0.0001              !
! R11   R(5,11)                 1.0861         -DE/DX =    0.0002              !
! R12   R(6,12)                 1.0861         -DE/DX =    0.0002              !
! A1    A(2,1,6)              119.9996         -DE/DX =    0.0                 !
! A2    A(2,1,7)              119.9968         -DE/DX =    0.0                 !
! A3    A(6,1,7)              120.0036         -DE/DX =    0.0                 !
! A4    A(1,2,3)              120.0036         -DE/DX =    0.0                 !
! A5    A(1,2,8)              119.9916         -DE/DX =    0.0                 !
! A6    A(3,2,8)              120.0048         -DE/DX =    0.0                 !
! A7    A(2,3,4)              119.9967         -DE/DX =    0.0                 !
! A8    A(2,3,9)              120.0101         -DE/DX =    0.0                 !
! A9    A(4,3,9)              119.9932         -DE/DX =    0.0                 !
! A10   A(3,4,5)              119.9996         -DE/DX =    0.0                 !
! A11   A(3,4,10)             119.9891         -DE/DX =    0.0                 !
! A12   A(5,4,10)             120.0113         -DE/DX =    0.0                 !
! A13   A(4,5,6)              120.004          -DE/DX =    0.0                 !
! A14   A(4,5,11)             120.0048         -DE/DX =    0.0                 !
! A15   A(6,5,11)             119.9912         -DE/DX =    0.0                 !
! A16   A(1,6,5)              119.9965         -DE/DX =    0.0                 !
! A17   A(1,6,12)             120.0072         -DE/DX =    0.0                 !
! A18   A(5,6,12)             119.9963         -DE/DX =    0.0                 !
! D1    D(6,1,2,3)             -0.0059         -DE/DX =    0.0                 !
! D2    D(6,1,2,8)            180.0021         -DE/DX =    0.0                 !
! D3    D(7,1,2,3)           -180.0099         -DE/DX =    0.0                 !
! D4    D(7,1,2,8)             -0.0019         -DE/DX =    0.0                 !
! D5    D(2,1,6,5)             -0.0055         -DE/DX =    0.0                 !
! D6    D(2,1,6,12)          -179.9972         -DE/DX =    0.0                 !
! D7    D(7,1,6,5)           -180.0016         -DE/DX =    0.0                 !
! D8    D(7,1,6,12)             0.0068         -DE/DX =    0.0                 !
! D9    D(1,2,3,4)              0.0119         -DE/DX =    0.0                 !
! D10   D(1,2,3,9)            180.0087         -DE/DX =    0.0                 !
! D11   D(8,2,3,4)            180.0039         -DE/DX =    0.0                 !
! D12   D(8,2,3,9)              0.0007         -DE/DX =    0.0                 !
! D13   D(2,3,4,5)             -0.0064         -DE/DX =    0.0                 !
! D14   D(2,3,4,10)          -180.0058         -DE/DX =    0.0                 !
! D15   D(9,3,4,5)            179.9968         -DE/DX =    0.0                 !
! D16   D(9,3,4,10)            -0.0026         -DE/DX =    0.0                 !
! D17   D(3,4,5,6)             -0.005          -DE/DX =    0.0                 !
! D18   D(3,4,5,11)           180.0061         -DE/DX =    0.0                 !
! D19   D(10,4,5,6)          -180.0057         -DE/DX =    0.0                 !
! D20   D(10,4,5,11)            0.0055         -DE/DX =    0.0                 !
! D21   D(4,5,6,1)              0.011          -DE/DX =    0.0                 !
! D22   D(4,5,6,12)           180.0027         -DE/DX =    0.0                 !
! D23   D(11,5,6,1)           179.9999         -DE/DX =    0.0                 !
! D24   D(11,5,6,12)           -0.0085         -DE/DX =    0.0                 !
--------------------------------------------------------------------------------
GradGradGradGradGradGradGradGradGradGradGradGradGradGradGradGradGradGrad
Frequency output information
Low frequencies ---  -14.2155   -2.6894   -0.0006   -0.0003   -0.0002   10.0093
Low frequencies ---  413.7279  414.5534  621.0444

NBO analysis

Natural populations
Summary of Natural Population Analysis:                 
                                                        
                                      Natural Population
               Natural  -----------------------------------------------
   Atom  No    Charge         Core      Valence    Rydberg      Total
-----------------------------------------------------------------------
     C    1   -0.23853      1.99910     4.22612    0.01331     6.23853
     C    2   -0.23854      1.99910     4.22613    0.01331     6.23854
     C    3   -0.23854      1.99910     4.22613    0.01331     6.23854
     C    4   -0.23853      1.99910     4.22612    0.01331     6.23853
     C    5   -0.23854      1.99910     4.22613    0.01331     6.23854
     C    6   -0.23855      1.99910     4.22613    0.01331     6.23855
     H    7    0.23854      0.00000     0.76003    0.00144     0.76146
     H    8    0.23854      0.00000     0.76003    0.00144     0.76146
     H    9    0.23854      0.00000     0.76002    0.00144     0.76146
     H   10    0.23854      0.00000     0.76003    0.00144     0.76146
     H   11    0.23854      0.00000     0.76003    0.00144     0.76146
     H   12    0.23855      0.00000     0.76002    0.00144     0.76145
=======================================================================
  * Total *    0.00000     11.99462    29.91691    0.08847    42.00000
Bond orbital
      (Occupancy)   Bond orbital/ Coefficients/ Hybrids
---------------------------------------------------------------------------------
    1. (1.98096) BD ( 1) C   1 - C   2 
               ( 50.00%)   0.7071* C   1 s( 35.19%)p 1.84( 64.77%)d 0.00(  0.04%)
                                          -0.0001  0.5932 -0.0078  0.0006  0.8037
                                           0.0163 -0.0206 -0.0317  0.0003  0.0000
                                           0.0015  0.0000  0.0000  0.0165 -0.0109
               ( 50.00%)   0.7071* C   2 s( 35.19%)p 1.84( 64.77%)d 0.00(  0.04%)
                                          -0.0001  0.5932 -0.0078  0.0006 -0.8037
                                          -0.0163 -0.0205 -0.0317 -0.0002  0.0000
                                          -0.0015  0.0000  0.0000  0.0165 -0.0109
    2. (1.98097) BD ( 1) C   1 - C   6 
               ( 50.00%)   0.7071* C   1 s( 35.20%)p 1.84( 64.76%)d 0.00(  0.04%)
                                          -0.0001  0.5933 -0.0079  0.0006 -0.4196
                                          -0.0357  0.6857 -0.0017 -0.0006  0.0000
                                          -0.0135  0.0000  0.0000 -0.0096 -0.0109
               ( 50.00%)   0.7071* C   6 s( 35.20%)p 1.84( 64.76%)d 0.00(  0.04%)
                                          -0.0001  0.5933 -0.0079  0.0006  0.3840
                                          -0.0193 -0.7063 -0.0300  0.0006  0.0000
                                          -0.0151  0.0000  0.0000 -0.0069 -0.0109
    3. (1.66532) BD ( 2) C   1 - C   6 
               ( 50.00%)   0.7071* C   1 s(  0.00%)p 1.00( 99.96%)d 0.00(  0.04%)
                                           0.0000  0.0000  0.0000  0.0000 -0.0004
                                           0.0000  0.0006  0.0000  0.9997 -0.0133
                                           0.0000  0.0002  0.0195  0.0000  0.0000
               ( 50.00%)   0.7071* C   6 s(  0.00%)p 1.00( 99.96%)d 0.00(  0.04%)
                                           0.0000  0.0000  0.0000  0.0000 -0.0004
                                           0.0000  0.0006  0.0000  0.9997 -0.0133
                                           0.0000  0.0170 -0.0096  0.0000  0.0000
    4. (1.98305) BD ( 1) C   1 - H   7 
               ( 62.04%)   0.7876* C   1 s( 29.57%)p 2.38( 70.39%)d 0.00(  0.04%)
                                           0.0003 -0.5437 -0.0126  0.0010  0.4194
                                          -0.0073  0.7265 -0.0126 -0.0003  0.0000
                                          -0.0144  0.0000  0.0000  0.0083  0.0105
               ( 37.96%)   0.6161* H   7 s( 99.95%)p 0.00(  0.05%)
                                          -0.9997 -0.0014 -0.0114 -0.0197  0.0000
    5. (1.98097) BD ( 1) C   2 - C   3 
               ( 50.00%)   0.7071* C   2 s( 35.20%)p 1.84( 64.76%)d 0.00(  0.04%)
                                          -0.0001  0.5933 -0.0079  0.0006  0.4197
                                           0.0357  0.6857 -0.0017 -0.0004  0.0000
                                           0.0135  0.0000  0.0000 -0.0096 -0.0109
               ( 50.00%)   0.7071* C   3 s( 35.20%)p 1.84( 64.76%)d 0.00(  0.04%)
                                          -0.0001  0.5933 -0.0079  0.0006 -0.3841
                                           0.0193 -0.7063 -0.0300  0.0004  0.0000
                                           0.0151  0.0000  0.0000 -0.0069 -0.0109
    6. (1.66534) BD ( 2) C   2 - C   3 
               ( 50.00%)   0.7071* C   2 s(  0.00%)p 1.00( 99.96%)d 0.00(  0.04%)
                                           0.0000  0.0000  0.0000  0.0000 -0.0003
                                           0.0000  0.0007  0.0000  0.9997 -0.0133
                                           0.0000 -0.0002  0.0195  0.0000  0.0000
               ( 50.00%)   0.7071* C   3 s(  0.00%)p 1.00( 99.96%)d 0.00(  0.04%)
                                           0.0000  0.0000  0.0000  0.0000 -0.0002
                                           0.0000  0.0007  0.0000  0.9997 -0.0133
                                           0.0000 -0.0170 -0.0096  0.0000  0.0000
    7. (1.98305) BD ( 1) C   2 - H   8 
               ( 62.04%)   0.7876* C   2 s( 29.57%)p 2.38( 70.39%)d 0.00(  0.04%)
                                           0.0003 -0.5437 -0.0126  0.0010 -0.4193
                                           0.0073  0.7265 -0.0126 -0.0006  0.0000
                                           0.0144  0.0000  0.0000  0.0083  0.0105
               ( 37.96%)   0.6161* H   8 s( 99.95%)p 0.00(  0.05%)
                                          -0.9997 -0.0014  0.0114 -0.0197  0.0000
    8. (1.98096) BD ( 1) C   3 - C   4 
               ( 50.00%)   0.7071* C   3 s( 35.19%)p 1.84( 64.77%)d 0.00(  0.04%)
                                          -0.0001  0.5932 -0.0078  0.0006 -0.3840
                                           0.0193  0.7064  0.0300 -0.0006  0.0000
                                          -0.0151  0.0000  0.0000 -0.0069 -0.0109
               ( 50.00%)   0.7071* C   4 s( 35.19%)p 1.84( 64.77%)d 0.00(  0.04%)
                                          -0.0001  0.5932 -0.0078  0.0006  0.4197
                                           0.0357 -0.6858  0.0017  0.0005  0.0000
                                          -0.0135  0.0000  0.0000 -0.0096 -0.0109
    9. (1.98305) BD ( 1) C   3 - H   9 
               ( 62.04%)   0.7876* C   3 s( 29.58%)p 2.38( 70.39%)d 0.00(  0.04%)
                                          -0.0003  0.5437  0.0126 -0.0010  0.8388
                                          -0.0146  0.0000  0.0000  0.0002  0.0000
                                           0.0000  0.0000  0.0000  0.0166 -0.0105
               ( 37.96%)   0.6161* H   9 s( 99.95%)p 0.00(  0.05%)
                                           0.9997  0.0014 -0.0228  0.0000  0.0000
   10. (1.98097) BD ( 1) C   4 - C   5 
               ( 50.00%)   0.7071* C   4 s( 35.20%)p 1.84( 64.76%)d 0.00(  0.04%)
                                          -0.0001  0.5933 -0.0079  0.0006 -0.8037
                                          -0.0164  0.0206  0.0317 -0.0002  0.0000
                                           0.0015  0.0000  0.0000  0.0165 -0.0109
               ( 50.00%)   0.7071* C   5 s( 35.20%)p 1.84( 64.76%)d 0.00(  0.04%)
                                          -0.0001  0.5933 -0.0079  0.0006  0.8037
                                           0.0164  0.0206  0.0317  0.0003  0.0000
                                          -0.0015  0.0000  0.0000  0.0165 -0.0109
   11. (1.66533) BD ( 2) C   4 - C   5 
               ( 50.00%)   0.7071* C   4 s(  0.00%)p 1.00( 99.96%)d 0.00(  0.04%)
                                           0.0000  0.0000  0.0000  0.0000 -0.0003
                                           0.0000  0.0006  0.0000  0.9997 -0.0133
                                           0.0000 -0.0168 -0.0099  0.0000  0.0000
               ( 50.00%)   0.7071* C   5 s(  0.00%)p 1.00( 99.96%)d 0.00(  0.04%)
                                           0.0000  0.0000  0.0000  0.0000 -0.0004
                                           0.0000  0.0006  0.0000  0.9997 -0.0133
                                           0.0000  0.0168 -0.0099  0.0000  0.0000
   12. (1.98305) BD ( 1) C   4 - H  10 
               ( 62.04%)   0.7876* C   4 s( 29.57%)p 2.38( 70.39%)d 0.00(  0.04%)
                                          -0.0003  0.5437  0.0126 -0.0010  0.4195
                                          -0.0073  0.7264 -0.0126 -0.0003  0.0000
                                           0.0144  0.0000  0.0000 -0.0083 -0.0105
               ( 37.96%)   0.6161* H  10 s( 99.95%)p 0.00(  0.05%)
                                           0.9997  0.0014 -0.0114 -0.0197  0.0000
   13. (1.98096) BD ( 1) C   5 - C   6 
               ( 50.00%)   0.7071* C   5 s( 35.19%)p 1.84( 64.77%)d 0.00(  0.04%)
                                          -0.0001  0.5932 -0.0078  0.0006 -0.4197
                                          -0.0357 -0.6857  0.0017  0.0003  0.0000
                                           0.0135  0.0000  0.0000 -0.0096 -0.0109
               ( 50.00%)   0.7071* C   6 s( 35.19%)p 1.84( 64.77%)d 0.00(  0.04%)
                                          -0.0001  0.5932 -0.0078  0.0006  0.3841
                                          -0.0193  0.7063  0.0300 -0.0003  0.0000
                                           0.0151  0.0000  0.0000 -0.0069 -0.0109
   14. (1.98305) BD ( 1) C   5 - H  11 
               ( 62.04%)   0.7876* C   5 s( 29.57%)p 2.38( 70.39%)d 0.00(  0.04%)
                                          -0.0003  0.5437  0.0126 -0.0010 -0.4194
                                           0.0073  0.7265 -0.0126 -0.0006  0.0000
                                          -0.0144  0.0000  0.0000 -0.0083 -0.0105
               ( 37.96%)   0.6161* H  11 s( 99.95%)p 0.00(  0.05%)
                                           0.9997  0.0014  0.0114 -0.0197  0.0000
   15. (1.98305) BD ( 1) C   6 - H  12 
               ( 62.04%)   0.7876* C   6 s( 29.58%)p 2.38( 70.39%)d 0.00(  0.04%)
                                           0.0003 -0.5437 -0.0126  0.0010  0.8388
                                          -0.0146 -0.0001  0.0000  0.0003  0.0000
                                           0.0000  0.0000  0.0000 -0.0166  0.0105
               ( 37.96%)   0.6161* H  12 s( 99.95%)p 0.00(  0.05%)
                                          -0.9997 -0.0014 -0.0228  0.0000  0.0000
   16. (1.99911) CR ( 1) C   1           s(100.00%)p 0.00(  0.00%)
                                           1.0000  0.0002  0.0000  0.0000 -0.0001
                                           0.0000 -0.0002  0.0000  0.0000  0.0000
                                           0.0000  0.0000  0.0000  0.0000  0.0000
Second order perturbation theory analysis of Fock Matrix in NBO basis

I only selected the ones whose E2 value larger than 20 kcal/mol.

Second Order Perturbation Theory Analysis of Fock Matrix in NBO Basis
    Threshold for printing:   0.50 kcal/mol
                                                                             E(2)  E(j)-E(i) F(i,j)
        Donor NBO (i)                     Acceptor NBO (j)                 kcal/mol   a.u.    a.u.
===================================================================================================
within unit  1
  3. BD (   2) C   1 - C   6        /111. BD*(   2) C   2 - C   3           20.42    0.28    0.068
  3. BD (   2) C   1 - C   6        /116. BD*(   2) C   4 - C   5           20.42    0.28    0.068
  6. BD (   2) C   2 - C   3        /108. BD*(   2) C   1 - C   6           20.42    0.28    0.068
  6. BD (   2) C   2 - C   3        /116. BD*(   2) C   4 - C   5           20.42    0.28    0.068
 11. BD (   2) C   4 - C   5        /108. BD*(   2) C   1 - C   6           20.42    0.28    0.068
 11. BD (   2) C   4 - C   5        /111. BD*(   2) C   2 - C   3           20.42    0.28    0.068
Natural bond orbital
Natural Bond Orbitals (Summary):
                                                           Principal Delocalizations
          NBO                        Occupancy    Energy   (geminal,vicinal,remote)
====================================================================================
Molecular unit  1  (C6H6)
    1. BD (   1) C   1 - C   2          1.98096    -0.68186  110(g),107(g),114(v),120(v)
                                                   43(v),73(v),109(g),112(g)
                                                   72(v),42(v)
    2. BD (   1) C   1 - C   6          1.98097    -0.68199  106(g),118(g),119(v),112(v)
                                                   33(v),63(v),120(g),109(g)
                                                   62(v),32(v)
    3. BD (   2) C   1 - C   6          1.66532    -0.23794  116(v),111(v),65(v),35(v)
    4. BD (   1) C   1 - H   7          1.98305    -0.51235  118(v),110(v),72(v),32(v)
                                                   107(g),106(g)
    5. BD (   1) C   2 - C   3          1.98097    -0.68202  106(g),113(g),109(v),117(v)
                                                   23(v),53(v),114(g),112(g)
                                                   52(v),22(v)
    6. BD (   2) C   2 - C   3          1.66534    -0.23795  108(v),116(v),55(v),25(v)
    7. BD (   1) C   2 - H   8          1.98305    -0.51234  113(v),107(v),42(v),22(v)
                                                   110(g),106(g)
    8. BD (   1) C   3 - C   4          1.98096    -0.68183  115(g),110(g),112(v),119(v)
                                                   63(v),33(v),114(g),117(g)
                                                   32(v),62(v)
    9. BD (   1) C   3 - H   9          1.98305    -0.51236  106(v),115(v),32(v),52(v)
                                                   110(g),113(g)
   10. BD (   1) C   4 - C   5          1.98097    -0.68202  118(g),113(g),114(v),120(v)
                                                   73(v),43(v),117(g),119(g)
                                                   42(v),72(v)
   11. BD (   2) C   4 - C   5          1.66533    -0.23794  108(v),111(v),45(v),75(v)
   12. BD (   1) C   4 - H  10          1.98305    -0.51236  118(v),110(v),62(v),42(v)
                                                   115(g),113(g)
   13. BD (   1) C   5 - C   6          1.98096    -0.68186  115(g),107(g),109(v),117(v)
                                                   53(v),23(v),120(g),119(g)
                                                   22(v),52(v)
   14. BD (   1) C   5 - H  11          1.98305    -0.51234  113(v),107(v),52(v),72(v)
                                                   115(g),118(g)
   15. BD (   1) C   6 - H  12          1.98305    -0.51236  106(v),115(v),22(v),62(v)
                                                   107(g),118(g)
   16. CR (   1) C   1                  1.99911   -10.04057  73(v),33(v),110(v),118(v)
                                                   120(v),112(v)
   17. CR (   1) C   2                  1.99911   -10.04056  43(v),23(v),113(v),107(v)
                                                   114(v),109(v)
   18. CR (   1) C   3                  1.99911   -10.04057  33(v),53(v),106(v),115(v)
                                                   112(v),117(v)
   19. CR (   1) C   4                  1.99911   -10.04056  63(v),43(v),118(v),110(v)
                                                   119(v),114(v)
   20. CR (   1) C   5                  1.99911   -10.04056  53(v),73(v),113(v),107(v)
                                                   117(v),120(v)
   21. CR (   1) C   6                  1.99911   -10.04057  23(v),63(v),106(v),115(v)
                                                   109(v),119(v)
   22. RY*(   1) C   1                  0.00482     1.27866

IR spectrum

IR spectrum of benzene molecule.

MOs of benzene

π orbital MO of benzene.
σ orbital MO of benzene.

Charge distribution

Charge distribution (color) of benzene molecule.
Charge distribution (number) of benzene molecule.

Bond information

Benzene molecule.
Benzene bond distance and angle
Bond Distance C-H ~1.08610 Å
Bond Distance C1-C2 1.39628 Å
Bond Distance C2-C3 1.39608 Å
Bond Distance C3-C4 1.39630 Å
Bond Distance C4-C5 1.39628 Å
Bond Distance C5-C6 1.39628 Å
Bond Distance C6-C1 1.39610 Å
Average bond Distance C-C ~1.39622 Å
Bond Angle H-C-C ~120.000
Bond Angle C-C-C ~120.000

File link

Optimization:DOI:10042/to-https://spectradspace.lib.imperial.ac.uk:8443/dspace/handle/10042/20580

Frequency:DOI:10042/to-https://spectradspace.lib.imperial.ac.uk:8443/dspace/handle/10042/20581

NBO:DOI:10042/to-https://spectradspace.lib.imperial.ac.uk:8443/dspace/handle/10042/20581

Boratabenzene

The optimization, frequency and NBO calculation of boratabenzene molecule was carried out by the HPC.

Molecule

Boratabenzene molecule

Summary

Optimization summary of boratabenzene molecule.
Frequency summary of boratabenzene molecule.

Output information

Optimization output information
        Item               Value     Threshold  Converged?
Maximum Force            0.000159     0.000450     YES
RMS     Force            0.000068     0.000300     YES
Maximum Displacement     0.000888     0.001800     YES
RMS     Displacement     0.000326     0.001200     YES
Predicted change in Energy=-6.533587D-07
Optimization completed.
   -- Stationary point found.
                          ----------------------------
                          !   Optimized Parameters   !
                          ! (Angstroms and Degrees)  !
--------------------------                            --------------------------
! Name  Definition              Value          Derivative Info.                !
--------------------------------------------------------------------------------
! R1    R(1,2)                  1.4053         -DE/DX =   -0.0001              !
! R2    R(1,5)                  1.4053         -DE/DX =   -0.0001              !
! R3    R(1,6)                  1.0916         -DE/DX =   -0.0001              !
! R4    R(2,3)                  1.3989         -DE/DX =    0.0                 !
! R5    R(2,7)                  1.0968         -DE/DX =    0.0001              !
! R6    R(3,8)                  1.097          -DE/DX =   -0.0001              !
! R7    R(3,12)                 1.5138         -DE/DX =    0.0001              !
! R8    R(4,5)                  1.3989         -DE/DX =    0.0                 !
! R9    R(4,10)                 1.097          -DE/DX =   -0.0001              !
! R10   R(4,12)                 1.5137         -DE/DX =    0.0001              !
! R11   R(5,11)                 1.0968         -DE/DX =    0.0001              !
! R12   R(9,12)                 1.2185         -DE/DX =    0.0                 !
! A1    A(2,1,5)              120.4509         -DE/DX =   -0.0001              !
! A2    A(2,1,6)              119.7734         -DE/DX =    0.0001              !
! A3    A(5,1,6)              119.7757         -DE/DX =    0.0001              !
! A4    A(1,2,3)              122.1382         -DE/DX =    0.0001              !
! A5    A(1,2,7)              117.4353         -DE/DX =    0.0                 !
! A6    A(3,2,7)              120.4265         -DE/DX =   -0.0002              !
! A7    A(2,3,8)              115.9542         -DE/DX =    0.0001              !
! A8    A(2,3,12)             120.0809         -DE/DX =   -0.0001              !
! A9    A(8,3,12)             123.9649         -DE/DX =   -0.0001              !
! A10   A(5,4,10)             115.9498         -DE/DX =    0.0001              !
! A11   A(5,4,12)             120.081          -DE/DX =   -0.0001              !
! A12   A(10,4,12)            123.9692         -DE/DX =   -0.0001              !
! A13   A(1,5,4)              122.1395         -DE/DX =    0.0001              !
! A14   A(1,5,11)             117.4369         -DE/DX =    0.0                 !
! A15   A(4,5,11)             120.4236         -DE/DX =   -0.0002              !
! A16   A(3,12,4)             115.1095         -DE/DX =    0.0                 !
! A17   A(3,12,9)             122.4414         -DE/DX =    0.0                 !
! A18   A(4,12,9)             122.4491         -DE/DX =    0.0                 !
! D1    D(5,1,2,3)              0.0065         -DE/DX =    0.0                 !
! D2    D(5,1,2,7)           -180.0034         -DE/DX =    0.0                 !
! D3    D(6,1,2,3)            180.0061         -DE/DX =    0.0                 !
! D4    D(6,1,2,7)             -0.0039         -DE/DX =    0.0                 !
! D5    D(2,1,5,4)              0.0007         -DE/DX =    0.0                 !
! D6    D(2,1,5,11)          -180.0039         -DE/DX =    0.0                 !
! D7    D(6,1,5,4)           -179.9988         -DE/DX =    0.0                 !
! D8    D(6,1,5,11)            -0.0035         -DE/DX =    0.0                 !
! D9    D(1,2,3,8)           -180.0066         -DE/DX =    0.0                 !
! D10   D(1,2,3,12)            -0.0085         -DE/DX =    0.0                 !
! D11   D(7,2,3,8)              0.0036         -DE/DX =    0.0                 !
! D12   D(7,2,3,12)           180.0018         -DE/DX =    0.0                 !
! D13   D(2,3,12,4)             0.0035         -DE/DX =    0.0                 !
! D14   D(2,3,12,9)           180.0026         -DE/DX =    0.0                 !
! D15   D(8,3,12,4)           180.0015         -DE/DX =    0.0                 !
! D16   D(8,3,12,9)             0.0006         -DE/DX =    0.0                 !
! D17   D(10,4,5,1)           179.9969         -DE/DX =    0.0                 !
! D18   D(10,4,5,11)            0.0017         -DE/DX =    0.0                 !
! D19   D(12,4,5,1)            -0.0055         -DE/DX =    0.0                 !
! D20   D(12,4,5,11)         -180.0007         -DE/DX =    0.0                 !
! D21   D(5,4,12,3)             0.0033         -DE/DX =    0.0                 !
! D22   D(5,4,12,9)           180.0042         -DE/DX =    0.0                 !
! D23   D(10,4,12,3)         -179.9993         -DE/DX =    0.0                 !
! D24   D(10,4,12,9)            0.0016         -DE/DX =    0.0                 !
--------------------------------------------------------------------------------
GradGradGradGradGradGradGradGradGradGradGradGradGradGradGradGradGradGrad
Frequency output information
Low frequencies ---  -13.1286    0.0003    0.0005    0.0006   15.0635   18.1734
Low frequencies ---  371.3453  404.2332  565.2514

NBO analysis

Natural populations
Summary of Natural Population Analysis:                  
                                                         
                                      Natural Population 
               Natural  -----------------------------------------------
   Atom  No    Charge         Core      Valence    Rydberg      Total
-----------------------------------------------------------------------
     C    1   -0.33984      1.99907     4.32693    0.01384     6.33984
     C    2   -0.25043      1.99910     4.23720    0.01412     6.25043
     C    3   -0.58789      1.99901     4.57710    0.01178     6.58789
     C    4   -0.58795      1.99901     4.57716    0.01178     6.58795
     C    5   -0.25041      1.99910     4.23719    0.01412     6.25041
     H    6    0.18564      0.00000     0.81237    0.00200     0.81436
     H    7    0.17906      0.00000     0.81832    0.00262     0.82094
     H    8    0.18380      0.00000     0.81402    0.00218     0.81620
     H    9   -0.09642      0.00000     1.09588    0.00054     1.09642
     H   10    0.18380      0.00000     0.81402    0.00218     0.81620
     H   11    0.17906      0.00000     0.81832    0.00262     0.82094
     B   12    0.20160      1.99906     2.78774    0.01160     4.79840
=======================================================================
  * Total *   -1.00000     11.99436    29.91625    0.08939    42.00000
Bond orbital
      (Occupancy)   Bond orbital/ Coefficients/ Hybrids
---------------------------------------------------------------------------------
    1. (1.97970) BD ( 1) C   1 - C   2  
               ( 50.04%)   0.7074* C   1 s( 35.88%)p 1.79( 64.09%)d 0.00(  0.04%)
                                          -0.0001  0.5989 -0.0072  0.0010  0.7062
                                           0.0327  0.3754 -0.0141  0.0000  0.0000
                                           0.0137  0.0000  0.0000  0.0078 -0.0107
               ( 49.96%)   0.7068* C   2 s( 35.50%)p 1.82( 64.46%)d 0.00(  0.04%)
                                          -0.0001  0.5958 -0.0075  0.0006 -0.6874
                                          -0.0034 -0.4135 -0.0325  0.0000  0.0000
                                           0.0146  0.0000  0.0000  0.0081 -0.0107
    2. (1.97971) BD ( 1) C   1 - C   5  
               ( 50.04%)   0.7074* C   1 s( 35.88%)p 1.79( 64.09%)d 0.00(  0.04%)
                                          -0.0001  0.5989 -0.0072  0.0010 -0.7063
                                          -0.0327  0.3752 -0.0141  0.0000  0.0000
                                          -0.0137  0.0000  0.0000  0.0078 -0.0107
               ( 49.96%)   0.7068* C   5 s( 35.51%)p 1.82( 64.45%)d 0.00(  0.04%)
                                          -0.0001  0.5958 -0.0075  0.0006  0.6875
                                           0.0034 -0.4133 -0.0325  0.0000  0.0000
                                          -0.0146  0.0000  0.0000  0.0081 -0.0107
    3. (1.98507) BD ( 1) C   1 - H   6  
               ( 59.44%)   0.7710* C   1 s( 28.22%)p 2.54( 71.74%)d 0.00(  0.04%)
                                           0.0004 -0.5311 -0.0116  0.0020 -0.0001
                                           0.0000  0.8469 -0.0076  0.0000  0.0000
                                           0.0000  0.0000  0.0000  0.0178  0.0110
               ( 40.56%)   0.6369* H   6 s( 99.95%)p 0.00(  0.05%)
                                          -0.9998 -0.0011  0.0000 -0.0217  0.0000
    4. (1.98270) BD ( 1) C   2 - C   3  
               ( 50.77%)   0.7125* C   2 s( 37.60%)p 1.66( 62.37%)d 0.00(  0.03%)
                                          -0.0001  0.6131 -0.0079  0.0007  0.0573
                                           0.0311  0.7869  0.0164  0.0000  0.0000
                                           0.0020  0.0000  0.0000 -0.0150 -0.0098
               ( 49.23%)   0.7017* C   3 s( 32.49%)p 2.08( 67.46%)d 0.00(  0.05%)
                                           0.0000  0.5697 -0.0200  0.0010 -0.0025
                                           0.0269 -0.8201 -0.0353 -0.0001  0.0000
                                          -0.0006  0.0000  0.0000 -0.0173 -0.0123
    5. (1.76868) BD ( 2) C   2 - C   3  
               ( 48.13%)   0.6938* C   2 s(  0.00%)p 1.00( 99.97%)d 0.00(  0.03%)
                                           0.0000  0.0000  0.0000  0.0000  0.0000
                                           0.0000  0.0000  0.0000  0.9996 -0.0213
                                           0.0000 -0.0031  0.0171  0.0000  0.0000
               ( 51.87%)   0.7202* C   3 s(  0.00%)p 1.00( 99.97%)d 0.00(  0.03%)
                                           0.0000  0.0000  0.0000  0.0000  0.0000
                                           0.0000 -0.0001  0.0000  0.9998 -0.0054
                                           0.0000 -0.0016 -0.0185  0.0000  0.0000
    6. (1.98570) BD ( 1) C   2 - H   7  
               ( 59.32%)   0.7702* C   2 s( 26.88%)p 2.72( 73.08%)d 0.00(  0.05%)
                                          -0.0003  0.5182  0.0133 -0.0012  0.7228
                                          -0.0089 -0.4562  0.0100  0.0000  0.0000
                                          -0.0177  0.0000  0.0000  0.0069 -0.0111
               ( 40.68%)   0.6378* H   7 s( 99.95%)p 0.00(  0.05%)
                                           0.9998  0.0026 -0.0187  0.0116  0.0000
    7. (1.98420) BD ( 1) C   3 - H   8  
               ( 59.41%)   0.7708* C   3 s( 25.39%)p 2.94( 74.57%)d 0.00(  0.05%)
                                          -0.0003  0.5038 -0.0051 -0.0025  0.7906
                                          -0.0003  0.3472  0.0088  0.0000  0.0000
                                           0.0111  0.0000  0.0000  0.0149 -0.0119
               ( 40.59%)   0.6371* H   8 s( 99.95%)p 0.00(  0.05%)
                                           0.9998  0.0005 -0.0192 -0.0100  0.0000
    8. (1.96996) BD ( 1) C   3 - B  12  
               ( 66.70%)   0.8167* C   3 s( 42.03%)p 1.38( 57.96%)d 0.00(  0.01%)
                                           0.0000 -0.6481 -0.0158 -0.0012  0.6117
                                          -0.0293 -0.4522 -0.0090  0.0000  0.0000
                                           0.0059  0.0000  0.0000 -0.0041  0.0057
               ( 33.30%)   0.5771* B  12 s( 33.40%)p 1.99( 66.53%)d 0.00(  0.08%)
                                           0.0000 -0.5779  0.0059 -0.0048 -0.7057
                                          -0.0393  0.4070 -0.0096  0.0000  0.0000
                                           0.0230  0.0000  0.0000 -0.0082  0.0133
    9. (1.98270) BD ( 1) C   4 - C   5  
               ( 49.23%)   0.7017* C   4 s( 32.49%)p 2.08( 67.46%)d 0.00(  0.05%)
                                           0.0000  0.5697 -0.0200  0.0010  0.0027
                                          -0.0269 -0.8202 -0.0353  0.0000  0.0000
                                           0.0006  0.0000  0.0000 -0.0173 -0.0123
               ( 50.77%)   0.7125* C   5 s( 37.60%)p 1.66( 62.37%)d 0.00(  0.03%)
                                          -0.0001  0.6131 -0.0079  0.0007 -0.0575
                                          -0.0311  0.7869  0.0164  0.0000  0.0000
                                          -0.0020  0.0000  0.0000 -0.0150 -0.0098
   10. (1.76862) BD ( 2) C   4 - C   5  
               ( 51.87%)   0.7202* C   4 s(  0.00%)p 1.00( 99.97%)d 0.00(  0.03%)
                                           0.0000  0.0000  0.0000  0.0000  0.0000
                                           0.0000  0.0000  0.0000  0.9998 -0.0054
                                           0.0000  0.0016 -0.0185  0.0000  0.0000
               ( 48.13%)   0.6937* C   5 s(  0.00%)p 1.00( 99.97%)d 0.00(  0.03%)
                                           0.0000  0.0000  0.0000  0.0000  0.0000
                                           0.0000  0.0000  0.0000  0.9996 -0.0213
                                           0.0000  0.0031  0.0171  0.0000  0.0000
   11. (1.98420) BD ( 1) C   4 - H  10  
               ( 59.41%)   0.7708* C   4 s( 25.38%)p 2.94( 74.57%)d 0.00(  0.05%)
                                          -0.0003  0.5038 -0.0051 -0.0025 -0.7907
                                           0.0003  0.3469  0.0088  0.0000  0.0000
                                          -0.0111  0.0000  0.0000  0.0150 -0.0119
               ( 40.59%)   0.6371* H  10 s( 99.95%)p 0.00(  0.05%)
                                           0.9998  0.0005  0.0192 -0.0100  0.0000
   12. (1.96997) BD ( 1) C   4 - B  12  
               ( 66.70%)   0.8167* C   4 s( 42.04%)p 1.38( 57.96%)d 0.00(  0.01%)
                                           0.0000  0.6482  0.0158  0.0012  0.6115
                                          -0.0293  0.4524  0.0090  0.0000  0.0000
                                           0.0059  0.0000  0.0000  0.0041 -0.0057
               ( 33.30%)   0.5771* B  12 s( 33.40%)p 1.99( 66.52%)d 0.00(  0.08%)
                                           0.0000  0.5779 -0.0059  0.0048 -0.7056
                                          -0.0393 -0.4071  0.0096  0.0000  0.0000
                                           0.0230  0.0000  0.0000  0.0082 -0.0133
   13. (1.98570) BD ( 1) C   5 - H  11  
               ( 59.32%)   0.7702* C   5 s( 26.88%)p 2.72( 73.08%)d 0.00(  0.05%)
                                           0.0003 -0.5182 -0.0133  0.0012  0.7227
                                          -0.0089  0.4563 -0.0100  0.0000  0.0000
                                          -0.0177  0.0000  0.0000 -0.0069  0.0111
               ( 40.68%)   0.6378* H  11 s( 99.95%)p 0.00(  0.05%)
                                          -0.9998 -0.0026 -0.0187 -0.0116  0.0000
   14. (1.98604) BD ( 1) H   9 - B  12  
               ( 55.09%)   0.7422* H   9 s( 99.97%)p 0.00(  0.03%)
                                           0.9998  0.0001  0.0000 -0.0180  0.0000
               ( 44.91%)   0.6702* B  12 s( 33.16%)p 2.01( 66.78%)d 0.00(  0.06%)
                                          -0.0005  0.5758  0.0069 -0.0060 -0.0001
                                           0.0000  0.8172 -0.0016  0.0000  0.0000
                                           0.0000  0.0000  0.0000 -0.0213 -0.0105
   15. (1.99907) CR ( 1) C   1           s(100.00%)p 0.00(  0.00%)
                                           1.0000  0.0003  0.0000  0.0000  0.0000
                                           0.0000 -0.0002  0.0000  0.0000  0.0000
                                           0.0000  0.0000  0.0000  0.0000  0.0000
Second order perturbation theory analysis of Fock Matrix in NBO basis

I only selected the ones whose E2 value is larger than 20kcal/mol.

Second Order Perturbation Theory Analysis of Fock Matrix in NBO Basis
    Threshold for printing:   0.50 kcal/mol
                                                                             E(2)  E(j)-E(i) F(i,j)
        Donor NBO (i)                     Acceptor NBO (j)                 kcal/mol   a.u.    a.u. 
===================================================================================================
within unit  1
  5. BD (   2) C   2 - C   3        / 21. LP (   1) C   1                   37.20    0.13    0.083
  5. BD (   2) C   2 - C   3        / 22. LP*(   1) B  12                   24.27    0.25    0.077
 10. BD (   2) C   4 - C   5        / 21. LP (   1) C   1                   37.21    0.13    0.083
 10. BD (   2) C   4 - C   5        / 22. LP*(   1) B  12                   24.28    0.25    0.077
 21. LP (   1) C   1                /111. BD*(   2) C   2 - C   3           71.49    0.15    0.106
 21. LP (   1) C   1                /116. BD*(   2) C   4 - C   5           71.51    0.15    0.106
 22. LP*(   1) B  12                /111. BD*(   2) C   2 - C   3          174.83    0.02    0.086
 22. LP*(   1) B  12                /116. BD*(   2) C   4 - C   5          174.95    0.02    0.086
Natural bond orbital
Natural Bond Orbitals (Summary):
                                                           Principal Delocalizations
          NBO                        Occupancy    Energy   (geminal,vicinal,remote)
====================================================================================
Molecular unit  1  (C5H6B)
    1. BD (   1) C   1 - C   2          1.97970    -0.46973  110(g),108(g),119(v),113(v)
                                                   64(v),43(v),109(g),112(g)
    2. BD (   1) C   1 - C   5          1.97971    -0.46976  115(g),107(g),112(v),117(v)
                                                   34(v),53(v),109(g),119(g)
    3. BD (   1) C   1 - H   6          1.98507    -0.31744  115(v),110(v),63(v),33(v)
                                                   108(g),107(g)
    4. BD (   1) C   2 - C   3          1.98270    -0.46498  114(g),107(g),109(v),112(g)
                                                   24(v),120(v),113(g),98(v)
                                                   23(v)
    5. BD (   2) C   2 - C   3          1.76868    -0.02908  21(v),22(v),25(v),100(v)
                                                   111(g)
    6. BD (   1) C   2 - H   7          1.98570    -0.31412  108(v),114(v),23(v),43(v)
                                                   110(g)
    7. BD (   1) C   3 - H   8          1.98420    -0.28849  107(v),114(g),33(v),118(v)
                                                   97(v),110(g)
    8. BD (   1) C   3 - B  12          1.96996    -0.31775  110(g),112(v),117(v),113(g)
                                                   34(v),33(v),81(v),54(v)
                                                   118(g)
    9. BD (   1) C   4 - C   5          1.98270    -0.46495  118(g),108(g),109(v),119(g)
                                                   24(v),120(v),117(g),98(v)
                                                   23(v)
   10. BD (   2) C   4 - C   5          1.76862    -0.02907  21(v),22(v),25(v),100(v)
                                                   116(g)
   11. BD (   1) C   4 - H  10          1.98420    -0.28848  108(v),118(g),63(v),114(v)
                                                   97(v),115(g)
   12. BD (   1) C   4 - B  12          1.96997    -0.31779  115(g),119(v),113(v),117(g)
                                                   64(v),63(v),89(v),44(v)
                                                   114(g)
   13. BD (   1) C   5 - H  11          1.98570    -0.31412  107(v),118(v),23(v),53(v)
                                                   115(g)
   14. BD (   1) H   9 - B  12          1.98604    -0.17253  115(v),110(v),53(v),43(v)
   15. CR (   1) C   1                  1.99907    -9.82827  64(v),34(v),115(v),110(v)
                                                   119(v),112(v),37(v),67(v)
                                                   63(v),33(v)
   16. CR (   1) C   2                  1.99910    -9.83478  44(v),24(v),114(v),109(v)
                                                   108(v),113(v)
   17. CR (   1) C   3                  1.99902    -9.79408  34(v),98(v),114(g),107(v)
                                                   112(v),97(v)
   18. CR (   1) C   4                  1.99902    -9.79407  64(v),98(v),118(g),108(v)
                                                   119(v),97(v)
   19. CR (   1) C   5                  1.99910    -9.83478  54(v),24(v),118(v),109(v)
                                                   107(v),117(v)
   20. CR (   1) B  12                  1.99907    -6.36942  117(v),113(v),115(v),110(v)
                                                   53(v),43(v)
   21. LP (   1) C   1                  1.14688     0.09689  116(v),111(v),25(g),66(v)
                                                   36(v),35(v),65(v)
   22. LP*(   1) B  12                  0.57262     0.22267  116(v),111(v),100(g),57(v)
                                                   47(v)
   23. RY*(   1) C   1                  0.00435     1.45200

IR spectrum

IR spectrum of boratabenzene molecule.

Charge distribution

Charge distribution (color) of boratabenzene molecule.
Charge distribution (number) of boratabenzene molecule.

Bond information

Boratabenzene molecule.
Boratabenzene bond distance and angle
Bond Distance B-H 1.21848 Å
Bond Distance C1(4)-H 1.09698 Å
Bond Distance C2(5)-H 1.09677 Å
Bond Distance C3-H 1.09165 Å
Bond Distance B-C3 1.51383 Å
Bond Distance B-C4 1.51374 Å
Bond Distance C3-C2 1.39887 Å
Bond Distance C2-C1 1.40532 Å
Bond Distance C1-C5 1.40528 Å
Bond Distance C5-C4 1.39890 Å
Bond Angle H-B-C ~122.445
Bond Angle H-C-B ~123.967
Bond Angle B-C-C 120.081
Bond Angle C3(4)-C2(5)-C1 122.138
Bond Angle C2-C1-C5 120.451

File link

Optimization:DOI:10042/to-https://spectradspace.lib.imperial.ac.uk:8443/dspace/handle/10042/20619

Frequency:DOI:10042/to-https://spectradspace.lib.imperial.ac.uk:8443/dspace/handle/10042/20622

NBO:DOI:10042/to-https://spectradspace.lib.imperial.ac.uk:8443/dspace/handle/10042/20624

Pyridinium

The optimization, frequency and NBO calculation of pyridinium molecule was carried out by the HPC.

Molecule

Pyridinium molecule

Summary

Optimization summary of pyridinium molecule.
Frequency summary of pyridinium molecule.

Output information

Optimization output information
        Item               Value     Threshold  Converged?
Maximum Force            0.000065     0.000450     YES
RMS     Force            0.000023     0.000300     YES
Maximum Displacement     0.000830     0.001800     YES
RMS     Displacement     0.000176     0.001200     YES
Predicted change in Energy=-7.038332D-08
Optimization completed.
   -- Stationary point found.
                          ----------------------------
                          !   Optimized Parameters   !
                          ! (Angstroms and Degrees)  !
--------------------------                            --------------------------
! Name  Definition              Value          Derivative Info.                !
--------------------------------------------------------------------------------
! R1    R(1,2)                  1.3988         -DE/DX =    0.0                 !
! R2    R(1,5)                  1.3988         -DE/DX =    0.0                 !
! R3    R(1,6)                  1.0852         -DE/DX =    0.0                 !
! R4    R(2,3)                  1.3838         -DE/DX =    0.0                 !
! R5    R(2,7)                  1.0835         -DE/DX =    0.0                 !
! R6    R(3,8)                  1.0832         -DE/DX =    0.0                 !
! R7    R(3,12)                 1.3524         -DE/DX =    0.0                 !
! R8    R(4,5)                  1.3839         -DE/DX =    0.0                 !
! R9    R(4,10)                 1.0832         -DE/DX =    0.0                 !
! R10   R(4,12)                 1.3523         -DE/DX =    0.0001              !
! R11   R(5,11)                 1.0835         -DE/DX =    0.0                 !
! R12   R(9,12)                 1.0169         -DE/DX =    0.0                 !
! A1    A(2,1,5)              120.0614         -DE/DX =    0.0                 !
! A2    A(2,1,6)              119.9688         -DE/DX =    0.0                 !
! A3    A(5,1,6)              119.9698         -DE/DX =    0.0                 !
! A4    A(1,2,3)              119.0799         -DE/DX =    0.0                 !
! A5    A(1,2,7)              121.4985         -DE/DX =   -0.0001              !
! A6    A(3,2,7)              119.4216         -DE/DX =    0.0                 !
! A7    A(2,3,8)              123.9337         -DE/DX =    0.0                 !
! A8    A(2,3,12)             119.2332         -DE/DX =    0.0                 !
! A9    A(8,3,12)             116.8331         -DE/DX =    0.0                 !
! A10   A(5,4,10)             123.9279         -DE/DX =    0.0                 !
! A11   A(5,4,12)             119.2355         -DE/DX =    0.0                 !
! A12   A(10,4,12)            116.8366         -DE/DX =    0.0                 !
! A13   A(1,5,4)              119.0771         -DE/DX =    0.0                 !
! A14   A(1,5,11)             121.503          -DE/DX =   -0.0001              !
! A15   A(4,5,11)             119.42           -DE/DX =    0.0001              !
! A16   A(3,12,4)             123.3129         -DE/DX =    0.0                 !
! A17   A(3,12,9)             118.343          -DE/DX =    0.0                 !
! A18   A(4,12,9)             118.344          -DE/DX =    0.0                 !
! D1    D(5,1,2,3)              0.0007         -DE/DX =    0.0                 !
! D2    D(5,1,2,7)           -180.0002         -DE/DX =    0.0                 !
! D3    D(6,1,2,3)            180.0013         -DE/DX =    0.0                 !
! D4    D(6,1,2,7)              0.0004         -DE/DX =    0.0                 !
! D5    D(2,1,5,4)              0.0012         -DE/DX =    0.0                 !
! D6    D(2,1,5,11)           180.0005         -DE/DX =    0.0                 !
! D7    D(6,1,5,4)            180.0005         -DE/DX =    0.0                 !
! D8    D(6,1,5,11)            -0.0002         -DE/DX =    0.0                 !
! D9    D(1,2,3,8)           -180.0002         -DE/DX =    0.0                 !
! D10   D(1,2,3,12)            -0.0018         -DE/DX =    0.0                 !
! D11   D(7,2,3,8)              0.0007         -DE/DX =    0.0                 !
! D12   D(7,2,3,12)          -180.001          -DE/DX =    0.0                 !
! D13   D(2,3,12,4)             0.0012         -DE/DX =    0.0                 !
! D14   D(2,3,12,9)           180.0012         -DE/DX =    0.0                 !
! D15   D(8,3,12,4)          -180.0003         -DE/DX =    0.0                 !
! D16   D(8,3,12,9)            -0.0003         -DE/DX =    0.0                 !
! D17   D(10,4,5,1)           180.0005         -DE/DX =    0.0                 !
! D18   D(10,4,5,11)            0.0012         -DE/DX =    0.0                 !
! D19   D(12,4,5,1)            -0.0018         -DE/DX =    0.0                 !
! D20   D(12,4,5,11)         -180.0011         -DE/DX =    0.0                 !
! D21   D(5,4,12,3)             0.0006         -DE/DX =    0.0                 !
! D22   D(5,4,12,9)           180.0006         -DE/DX =    0.0                 !
! D23   D(10,4,12,3)         -180.0015         -DE/DX =    0.0                 !
! D24   D(10,4,12,9)           -0.0015         -DE/DX =    0.0                 !
--------------------------------------------------------------------------------
GradGradGradGradGradGradGradGradGradGradGradGradGradGradGradGradGradGrad
Frequency output information
Low frequencies ---   -5.3818   -0.0008   -0.0006    0.0008   11.0036   14.1046
Low frequencies ---  391.5100  404.4645  620.4186

NBO analysis

Natural populations
Summary of Natural Population Analysis:                  
                                                         
                                      Natural Population 
               Natural  -----------------------------------------------
   Atom  No    Charge         Core      Valence    Rydberg      Total
-----------------------------------------------------------------------
     C    1   -0.12243      1.99913     4.10943    0.01386     6.12243
     C    2   -0.24103      1.99912     4.22859    0.01331     6.24103
     C    3    0.07099      1.99918     3.91068    0.01916     5.92901
     C    4    0.07101      1.99918     3.91066    0.01916     5.92899
     C    5   -0.24103      1.99912     4.22859    0.01331     6.24103
     H    6    0.29169      0.00000     0.70718    0.00113     0.70831
     H    7    0.29719      0.00000     0.70178    0.00103     0.70281
     H    8    0.28493      0.00000     0.71397    0.00110     0.71507
     H    9    0.48278      0.00000     0.51476    0.00246     0.51722
     H   10    0.28493      0.00000     0.71397    0.00110     0.71507
     H   11    0.29719      0.00000     0.70178    0.00103     0.70281
     N   12   -0.47622      1.99937     5.46756    0.00929     7.47622
=======================================================================
  * Total *    1.00000     11.99510    29.90895    0.09595    42.00000
Bond orbital
      (Occupancy)   Bond orbital/ Coefficients/ Hybrids
---------------------------------------------------------------------------------
    1. (1.98249) BD ( 1) C   1 - C   2  
               ( 49.74%)   0.7053* C   1 s( 34.45%)p 1.90( 65.51%)d 0.00(  0.04%)
                                           0.0000  0.5869 -0.0086  0.0005 -0.3938
                                           0.0234  0.7061  0.0290  0.0003  0.0000
                                          -0.0169  0.0000  0.0000 -0.0060 -0.0113
               ( 50.26%)   0.7089* C   2 s( 34.73%)p 1.88( 65.23%)d 0.00(  0.04%)
                                           0.0000  0.5893 -0.0066  0.0009  0.4188
                                           0.0371 -0.6896  0.0068 -0.0002  0.0000
                                          -0.0122  0.0000  0.0000 -0.0118 -0.0115
    2. (1.98249) BD ( 1) C   1 - C   5  
               ( 49.74%)   0.7053* C   1 s( 34.45%)p 1.90( 65.51%)d 0.00(  0.04%)
                                           0.0000  0.5869 -0.0086  0.0005 -0.3931
                                           0.0235 -0.7065 -0.0289 -0.0006  0.0000
                                           0.0169  0.0000  0.0000 -0.0060 -0.0113
               ( 50.26%)   0.7089* C   5 s( 34.73%)p 1.88( 65.23%)d 0.00(  0.04%)
                                           0.0000  0.5893 -0.0066  0.0009  0.4181
                                           0.0371  0.6900 -0.0068  0.0006  0.0000
                                           0.0122  0.0000  0.0000 -0.0119 -0.0115
    3. (1.54880) BD ( 2) C   1 - C   5  
               ( 45.73%)   0.6762* C   1 s(  0.00%)p 1.00( 99.93%)d 0.00(  0.07%)
                                           0.0000  0.0000  0.0000  0.0000 -0.0004
                                           0.0000 -0.0006  0.0000  0.9997 -0.0036
                                           0.0000 -0.0241 -0.0101  0.0000  0.0000
               ( 54.27%)   0.7367* C   5 s(  0.00%)p 1.00( 99.94%)d 0.00(  0.06%)
                                           0.0000  0.0000  0.0000  0.0000 -0.0004
                                           0.0000 -0.0006  0.0000  0.9997 -0.0080
                                           0.0000 -0.0086  0.0228  0.0000  0.0000
    4. (1.98141) BD ( 1) C   1 - H   6  
               ( 64.64%)   0.8040* C   1 s( 31.07%)p 2.22( 68.90%)d 0.00(  0.03%)
                                          -0.0003  0.5572  0.0131 -0.0007  0.8298
                                          -0.0198  0.0004  0.0000  0.0003  0.0000
                                           0.0000  0.0000  0.0000  0.0153 -0.0101
               ( 35.36%)   0.5947* H   6 s( 99.94%)p 0.00(  0.06%)
                                           0.9997  0.0018 -0.0242  0.0000  0.0000
    5. (1.98297) BD ( 1) C   2 - C   3  
               ( 49.58%)   0.7042* C   2 s( 33.47%)p 1.99( 66.48%)d 0.00(  0.05%)
                                           0.0000  0.5784 -0.0119 -0.0002 -0.8145
                                          -0.0194 -0.0011  0.0320 -0.0003  0.0000
                                           0.0047  0.0000  0.0000  0.0179 -0.0119
               ( 50.42%)   0.7100* C   3 s( 38.49%)p 1.60( 61.47%)d 0.00(  0.04%)
                                          -0.0001  0.6204 -0.0023  0.0030  0.7832
                                           0.0046  0.0145  0.0331  0.0003  0.0000
                                          -0.0053  0.0000  0.0000  0.0168 -0.0095
    6. (1.61445) BD ( 2) C   2 - C   3  
               ( 52.23%)   0.7227* C   2 s(  0.00%)p 1.00( 99.94%)d 0.00(  0.06%)
                                           0.0000  0.0000  0.0000  0.0000 -0.0004
                                           0.0000 -0.0006  0.0000  0.9997 -0.0068
                                           0.0000 -0.0191 -0.0159  0.0000  0.0000
               ( 47.77%)   0.6912* C   3 s(  0.00%)p 1.00( 99.94%)d 0.00(  0.06%)
                                           0.0000  0.0000  0.0000  0.0000 -0.0004
                                           0.0000 -0.0006  0.0000  0.9995 -0.0175
                                           0.0000  0.0196 -0.0153  0.0000  0.0000
    7. (1.97822) BD ( 1) C   2 - H   7  
               ( 64.83%)   0.8052* C   2 s( 31.78%)p 2.15( 68.19%)d 0.00(  0.03%)
                                          -0.0003  0.5636  0.0138 -0.0005  0.3985
                                          -0.0072  0.7230 -0.0181  0.0006  0.0000
                                           0.0109  0.0000  0.0000 -0.0085 -0.0099
               ( 35.17%)   0.5930* H   7 s( 99.94%)p 0.00(  0.06%)
                                           0.9997  0.0016 -0.0116 -0.0208  0.0000
    8. (1.98154) BD ( 1) C   3 - H   8  
               ( 64.26%)   0.8016* C   3 s( 33.44%)p 1.99( 66.52%)d 0.00(  0.04%)
                                          -0.0004  0.5780  0.0180 -0.0017 -0.4697
                                           0.0193  0.6663 -0.0183  0.0002  0.0000
                                          -0.0164  0.0000  0.0000 -0.0019 -0.0092
               ( 35.74%)   0.5978* H   8 s( 99.94%)p 0.00(  0.06%)
                                           0.9997  0.0018  0.0129 -0.0209  0.0000
    9. (1.98861) BD ( 1) C   3 - N  12  
               ( 36.68%)   0.6057* C   3 s( 28.13%)p 2.55( 71.74%)d 0.00(  0.13%)
                                          -0.0001  0.5293 -0.0335 -0.0013 -0.4039
                                          -0.0563 -0.7419 -0.0277 -0.0006  0.0000
                                           0.0251  0.0000  0.0000 -0.0185 -0.0179
               ( 63.32%)   0.7957* N  12 s( 36.56%)p 1.73( 63.41%)d 0.00(  0.03%)
                                          -0.0001  0.6046 -0.0037  0.0006  0.3655
                                          -0.0187  0.7071  0.0132  0.0006  0.0000
                                           0.0107  0.0000  0.0000 -0.0059 -0.0115
   10. (1.98297) BD ( 1) C   4 - C   5  
               ( 50.42%)   0.7100* C   4 s( 38.49%)p 1.60( 61.47%)d 0.00(  0.04%)
                                          -0.0001  0.6204 -0.0023  0.0030  0.7832
                                           0.0047 -0.0137 -0.0331  0.0003  0.0000
                                           0.0053  0.0000  0.0000  0.0168 -0.0095
               ( 49.58%)   0.7042* C   5 s( 33.47%)p 1.99( 66.48%)d 0.00(  0.05%)
                                           0.0000  0.5784 -0.0119 -0.0002 -0.8145
                                          -0.0194  0.0004 -0.0320 -0.0003  0.0000
                                          -0.0047  0.0000  0.0000  0.0179 -0.0119
   11. (1.98154) BD ( 1) C   4 - H  10  
               ( 64.26%)   0.8016* C   4 s( 33.44%)p 1.99( 66.52%)d 0.00(  0.04%)
                                           0.0004 -0.5780 -0.0180  0.0017  0.4690
                                          -0.0193  0.6667 -0.0184  0.0006  0.0000
                                          -0.0164  0.0000  0.0000  0.0019  0.0092
               ( 35.74%)   0.5978* H  10 s( 99.94%)p 0.00(  0.06%)
                                          -0.9997 -0.0018 -0.0128 -0.0209  0.0000
   12. (1.98861) BD ( 1) C   4 - N  12  
               ( 36.68%)   0.6057* C   4 s( 28.13%)p 2.55( 71.74%)d 0.00(  0.13%)
                                          -0.0001  0.5294 -0.0335 -0.0013 -0.4046
                                          -0.0563  0.7415  0.0276  0.0003  0.0000
                                          -0.0252  0.0000  0.0000 -0.0184 -0.0179
               ( 63.32%)   0.7957* N  12 s( 36.56%)p 1.73( 63.41%)d 0.00(  0.03%)
                                          -0.0001  0.6047 -0.0037  0.0006  0.3662
                                          -0.0186 -0.7067 -0.0132 -0.0003  0.0000
                                          -0.0107  0.0000  0.0000 -0.0058 -0.0115
   13. (1.82448) BD ( 2) C   4 - N  12  
               ( 28.55%)   0.5343* C   4 s(  0.00%)p 1.00( 99.83%)d 0.00(  0.17%)
                                           0.0000  0.0000  0.0000  0.0000 -0.0004
                                           0.0000 -0.0006  0.0000  0.9991  0.0132
                                           0.0000 -0.0102  0.0394  0.0000  0.0000
               ( 71.45%)   0.8453* N  12 s(  0.00%)p 1.00( 99.98%)d 0.00(  0.02%)
                                           0.0000  0.0000  0.0000  0.0000 -0.0004
                                           0.0000 -0.0006  0.0000  0.9999  0.0036
                                           0.0000  0.0128 -0.0077  0.0000  0.0000
   14. (1.97822) BD ( 1) C   5 - H  11  
               ( 64.83%)   0.8052* C   5 s( 31.78%)p 2.15( 68.19%)d 0.00(  0.03%)
                                           0.0003 -0.5636 -0.0138  0.0005 -0.3991
                                           0.0072  0.7226 -0.0181  0.0003  0.0000
                                           0.0110  0.0000  0.0000  0.0085  0.0099
               ( 35.17%)   0.5930* H  11 s( 99.94%)p 0.00(  0.06%)
                                          -0.9997 -0.0016  0.0116 -0.0208  0.0000
   15. (1.98629) BD ( 1) H   9 - N  12  
               ( 25.41%)   0.5041* H   9 s( 99.88%)p 0.00(  0.12%)
                                          -0.9994  0.0064 -0.0342  0.0000  0.0000
               ( 74.59%)   0.8637* N  12 s( 26.81%)p 2.73( 73.16%)d 0.00(  0.02%)
                                           0.0002 -0.5178 -0.0066  0.0013  0.8553
                                          -0.0091  0.0004  0.0000  0.0003  0.0000
                                           0.0000  0.0000  0.0000 -0.0115  0.0106
   16. (1.99914) CR ( 1) C   1           s(100.00%)p 0.00(  0.00%)
                                           1.0000  0.0002  0.0000  0.0000  0.0002
                                           0.0000  0.0000  0.0000  0.0000  0.0000
                                           0.0000  0.0000  0.0000  0.0000  0.0000
Second order perturbation theory analysis of Fock Matrix in NBO basis

I only selected the ones whose E2 value is larger than 20kcal/mol.

Second Order Perturbation Theory Analysis of Fock Matrix in NBO Basis
    Threshold for printing:   0.50 kcal/mol
                                                                             E(2)  E(j)-E(i) F(i,j)
        Donor NBO (i)                     Acceptor NBO (j)                 kcal/mol   a.u.    a.u. 
===================================================================================================
within unit  1
  3. BD (   2) C   1 - C   5        /111. BD*(   2) C   2 - C   3           16.09    0.27    0.062
  3. BD (   2) C   1 - C   5        /118. BD*(   2) C   4 - N  12           47.06    0.20    0.089
  6. BD (   2) C   2 - C   3        /108. BD*(   2) C   1 - C   5           20.71    0.30    0.073
  6. BD (   2) C   2 - C   3        /118. BD*(   2) C   4 - N  12           15.42    0.22    0.054
 13. BD (   2) C   4 - N  12        /111. BD*(   2) C   2 - C   3           20.53    0.39    0.081
118. BD*(   2) C   4 - N  12        /108. BD*(   2) C   1 - C   5           50.25    0.08    0.090
118. BD*(   2) C   4 - N  12        /111. BD*(   2) C   2 - C   3           31.24    0.07    0.068
Natural bond orbital
Natural Bond Orbitals (Summary):
                                                           Principal Delocalizations
          NBO                        Occupancy    Energy   (geminal,vicinal,remote)
====================================================================================
Molecular unit  1  (C5H6N)
    1. BD (   1) C   1 - C   2          1.98249    -0.90378  113(v),119(v),110(g),43(v)
                                                   107(g),112(g),63(v),62(v)
                                                   109(g)
    2. BD (   1) C   1 - C   5          1.98249    -0.90379  116(v),112(v),115(g),54(v)
                                                   106(g),119(g),33(v),32(v)
                                                   109(g)
    3. BD (   2) C   1 - C   5          1.54880    -0.44892  118(v),111(v),56(v),36(v)
    4. BD (   1) C   1 - H   6          1.98141    -0.71804  110(v),115(v),32(v),62(v)
                                                   107(g),106(g)
    5. BD (   1) C   2 - C   3          1.98297    -0.92650  120(v),109(v),106(g),23(v)
                                                   113(g),97(v),112(g),22(v)
                                                   114(g),96(v)
    6. BD (   2) C   2 - C   3          1.61445    -0.46666  108(v),118(v),99(v),111(g)
                                                   27(v)
    7. BD (   1) C   2 - H   7          1.97822    -0.71855  114(v),107(v),22(v),42(v)
                                                   106(g),110(g)
    8. BD (   1) C   3 - H   8          1.98154    -0.75116  117(v),106(v),32(v),110(g)
                                                   96(v)
    9. BD (   1) C   3 - N  12          1.98861    -1.06560  117(g),52(v),112(v),33(v)
                                                   116(v),54(v),110(g),120(g)
   10. BD (   1) C   4 - C   5          1.98297    -0.92647  120(v),109(v),107(g),23(v)
                                                   116(g),97(v),119(g),22(v)
                                                   117(g),96(v)
   11. BD (   1) C   4 - H  10          1.98154    -0.75116  114(v),107(v),62(v),115(g)
                                                   96(v)
   12. BD (   1) C   4 - N  12          1.98861    -1.06564  114(g),42(v),119(v),63(v)
                                                   113(v),43(v),115(g),120(g)
   13. BD (   2) C   4 - N  12          1.82448    -0.56812  111(v),108(v),44(v),66(v)
   14. BD (   1) C   5 - H  11          1.97822    -0.71856  117(v),106(v),22(v),52(v)
                                                   107(g),115(g)
   15. BD (   1) H   9 - N  12          1.98629    -0.89228  115(v),110(v),52(v),42(v)
   16. CR (   1) C   1                  1.99914   -10.27397  33(v),63(v),110(v),115(v)
                                                   119(v),112(v),72(v)
   17. CR (   1) C   2                  1.99913   -10.26482  23(v),43(v),42(v),113(v)
                                                   107(v),76(v),109(v),114(v)
   18. CR (   1) C   3                  1.99918   -10.32332  33(v),117(v),120(v),106(v)
                                                   110(g),97(v),80(v),112(v)
   19. CR (   1) C   4                  1.99918   -10.32333  63(v),114(v),120(v),107(v)
                                                   115(g),97(v),88(v),119(v)
   20. CR (   1) C   5                  1.99913   -10.26483  23(v),54(v),52(v),116(v)
                                                   106(v),92(v),109(v),117(v)
   21. CR (   1) N  12                  1.99937   -14.46219  54(v),43(v)
   22. RY*(   1) C   1                  0.00524     1.08103

IR spectrum

IR spectrum of pyridinium molecule.

Charge distribution

Charge distribution (color) of pyridinium molecule.
Charge distribution (number) of pyridinium molecule.

Bond information

Pyridinium molecule.
Boratabenzene bond distance and angle
Bond Distance N-H 1.01692 Å
Bond Distance C1(4)-H 1.08521 Å
Bond Distance C2(5)-H 1.08352 Å
Bond Distance C3-H 1.08324 Å
Bond Distance N-C3 1.35237 Å
Bond Distance N-C4 1.35233 Å
Bond Distance C3-C2 1.38384 Å
Bond Distance C2-C1 1.39877 Å
Bond Distance C1-C5 1.39876 Å
Bond Distance C5-C4 1.38388 Å
Bond Angle H-N-C ~118.344
Bond Angle H-C-N ~116.835
Bond Angle N-C-C ~119.235
Bond Angle C3(4)-C2(5)-C1 ~119.078
Bond Angle C2-C1-C5 120.061

File link

Optimization:DOI:10042/to-https://spectradspace.lib.imperial.ac.uk:8443/dspace/handle/10042/20699

Frequency:DOI:10042/to-https://spectradspace.lib.imperial.ac.uk:8443/dspace/handle/10042/20702

NBO:DOI:10042/to-https://spectradspace.lib.imperial.ac.uk:8443/dspace/handle/10042/20704

Borazine

The optimization, frequency and NBO calculation of pyridinium molecule was carried out by the HPC.

Molecule

Borazine molecule

Summary

Optimization summary of borazine molecule.
Frequency summary of borazine molecule.

Output information

Optimization output information
        Item               Value     Threshold  Converged?
Maximum Force            0.000086     0.000450     YES
RMS     Force            0.000033     0.000300     YES
Maximum Displacement     0.000252     0.001800     YES
RMS     Displacement     0.000077     0.001200     YES
Predicted change in Energy=-9.332344D-08
Optimization completed.
   -- Stationary point found.
                          ----------------------------
                          !   Optimized Parameters   !
                          ! (Angstroms and Degrees)  !
--------------------------                            --------------------------
! Name  Definition              Value          Derivative Info.                !
--------------------------------------------------------------------------------
! R1    R(1,11)                 1.1949         -DE/DX =    0.0001              !
! R2    R(2,9)                  1.0097         -DE/DX =    0.0                 !
! R3    R(3,12)                 1.1949         -DE/DX =    0.0001              !
! R4    R(4,7)                  1.0097         -DE/DX =    0.0                 !
! R5    R(5,10)                 1.1949         -DE/DX =    0.0001              !
! R6    R(6,8)                  1.0097         -DE/DX =    0.0                 !
! R7    R(7,10)                 1.4307         -DE/DX =   -0.0001              !
! R8    R(7,12)                 1.4307         -DE/DX =   -0.0001              !
! R9    R(8,10)                 1.4307         -DE/DX =   -0.0001              !
! R10   R(8,11)                 1.4306         -DE/DX =   -0.0001              !
! R11   R(9,11)                 1.4307         -DE/DX =   -0.0001              !
! R12   R(9,12)                 1.4307         -DE/DX =   -0.0001              !
! A1    A(4,7,10)             118.5641         -DE/DX =    0.0                 !
! A2    A(4,7,12)             118.5579         -DE/DX =    0.0                 !
! A3    A(10,7,12)            122.878          -DE/DX =    0.0                 !
! A4    A(6,8,10)             118.5602         -DE/DX =    0.0                 !
! A5    A(6,8,11)             118.5628         -DE/DX =    0.0                 !
! A6    A(10,8,11)            122.877          -DE/DX =    0.0                 !
! A7    A(2,9,11)             118.5609         -DE/DX =    0.0                 !
! A8    A(2,9,12)             118.561          -DE/DX =    0.0                 !
! A9    A(11,9,12)            122.8781         -DE/DX =    0.0                 !
! A10   A(5,10,7)             121.4399         -DE/DX =    0.0                 !
! A11   A(5,10,8)             121.437          -DE/DX =    0.0                 !
! A12   A(7,10,8)             117.123          -DE/DX =    0.0                 !
! A13   A(1,11,8)             121.4407         -DE/DX =    0.0                 !
! A14   A(1,11,9)             121.4364         -DE/DX =    0.0                 !
! A15   A(8,11,9)             117.1229         -DE/DX =    0.0                 !
! A16   A(3,12,7)             121.4374         -DE/DX =    0.0                 !
! A17   A(3,12,9)             121.4415         -DE/DX =    0.0                 !
! A18   A(7,12,9)             117.1211         -DE/DX =    0.0                 !
! D1    D(4,7,10,5)             0.0036         -DE/DX =    0.0                 !
! D2    D(4,7,10,8)          -179.9962         -DE/DX =    0.0                 !
! D3    D(12,7,10,5)         -179.9997         -DE/DX =    0.0                 !
! D4    D(12,7,10,8)            0.0005         -DE/DX =    0.0                 !
! D5    D(4,7,12,3)             0.0007         -DE/DX =    0.0                 !
! D6    D(4,7,12,9)          -179.9989         -DE/DX =    0.0                 !
! D7    D(10,7,12,3)         -179.996          -DE/DX =    0.0                 !
! D8    D(10,7,12,9)            0.0044         -DE/DX =    0.0                 !
! D9    D(6,8,10,5)             0.0003         -DE/DX =    0.0                 !
! D10   D(6,8,10,7)          -179.9999         -DE/DX =    0.0                 !
! D11   D(11,8,10,5)          179.997          -DE/DX =    0.0                 !
! D12   D(11,8,10,7)           -0.0032         -DE/DX =    0.0                 !
! D13   D(6,8,11,1)            -0.0025         -DE/DX =    0.0                 !
! D14   D(6,8,11,9)           179.9975         -DE/DX =    0.0                 !
! D15   D(10,8,11,1)         -179.9992         -DE/DX =    0.0                 !
! D16   D(10,8,11,9)            0.0008         -DE/DX =    0.0                 !
! D17   D(2,9,11,1)            -0.0057         -DE/DX =    0.0                 !
! D18   D(2,9,11,8)           179.9944         -DE/DX =    0.0                 !
! D19   D(12,9,11,1)         -179.9955         -DE/DX =    0.0                 !
! D20   D(12,9,11,8)            0.0045         -DE/DX =    0.0                 !
! D21   D(2,9,12,3)             0.0035         -DE/DX =    0.0                 !
! D22   D(2,9,12,7)          -179.9968         -DE/DX =    0.0                 !
! D23   D(11,9,12,3)          179.9933         -DE/DX =    0.0                 !
! D24   D(11,9,12,7)           -0.007          -DE/DX =    0.0                 !
--------------------------------------------------------------------------------
GradGradGradGradGradGradGradGradGradGradGradGradGradGradGradGradGradGrad
Frequency output information
Low frequencies ---   -7.0969   -0.0009    0.0006    0.0007    7.3516   13.0343
Low frequencies ---  288.5920  290.5614  404.2308

NBO analysis

Natural populations
Summary of Natural Population Analysis:                  
                                                         
                                      Natural Population 
               Natural  -----------------------------------------------
   Atom  No    Charge         Core      Valence    Rydberg      Total
-----------------------------------------------------------------------
     H    1   -0.07654      0.00000     1.07585    0.00069     1.07654
     H    2    0.43198      0.00000     0.56573    0.00228     0.56802
     H    3   -0.07654      0.00000     1.07584    0.00069     1.07654
     H    4    0.43199      0.00000     0.56573    0.00228     0.56801
     H    5   -0.07654      0.00000     1.07585    0.00069     1.07654
     H    6    0.43199      0.00000     0.56573    0.00228     0.56801
     N    7   -1.10242      1.99943     6.09821    0.00478     8.10242
     N    8   -1.10241      1.99943     6.09820    0.00478     8.10241
     N    9   -1.10241      1.99943     6.09820    0.00478     8.10241
     B   10    0.74699      1.99917     2.23864    0.01520     4.25301
     B   11    0.74698      1.99917     2.23864    0.01520     4.25302
     B   12    0.74694      1.99917     2.23868    0.01520     4.25306
=======================================================================
  * Total *    0.00000     11.99579    29.93532    0.06889    42.00000
Bond orbital
      (Occupancy)   Bond orbital/ Coefficients/ Hybrids
---------------------------------------------------------------------------------
    1. (1.98670) BD ( 1) H   1 - B  11  
               ( 54.03%)   0.7351* H   1 s( 99.96%)p 0.00(  0.04%)
                                           0.9998  0.0002  0.0097  0.0165  0.0000
               ( 45.97%)   0.6780* B  11 s( 37.47%)p 1.67( 62.46%)d 0.00(  0.07%)
                                          -0.0006  0.6120  0.0129 -0.0016 -0.4010
                                           0.0137 -0.6805  0.0232  0.0003  0.0000
                                           0.0207  0.0000  0.0000 -0.0114 -0.0098
    2. (1.98495) BD ( 1) H   2 - N   9  
               ( 28.08%)   0.5299* H   2 s( 99.91%)p 0.00(  0.09%)
                                          -0.9996  0.0010  0.0145 -0.0257  0.0000
               ( 71.92%)   0.8481* N   9 s( 22.82%)p 3.38( 77.15%)d 0.00(  0.03%)
                                           0.0002 -0.4776  0.0114 -0.0006 -0.4323
                                          -0.0064  0.7645  0.0114 -0.0007  0.0000
                                           0.0104  0.0000  0.0000  0.0063  0.0119
    3. (1.98670) BD ( 1) H   3 - B  12  
               ( 54.03%)   0.7351* H   3 s( 99.96%)p 0.00(  0.04%)
                                           0.9998  0.0002 -0.0192  0.0002  0.0000
               ( 45.97%)   0.6780* B  12 s( 37.48%)p 1.67( 62.46%)d 0.00(  0.07%)
                                          -0.0006  0.6120  0.0129 -0.0016  0.7898
                                          -0.0269 -0.0070  0.0002  0.0003  0.0000
                                          -0.0004  0.0000  0.0000  0.0236 -0.0098
    4. (1.98495) BD ( 1) H   4 - N   7  
               ( 28.08%)   0.5299* H   4 s( 99.91%)p 0.00(  0.09%)
                                           0.9996 -0.0010 -0.0150 -0.0254  0.0000
               ( 71.92%)   0.8481* N   7 s( 22.82%)p 3.38( 77.15%)d 0.00(  0.03%)
                                          -0.0002  0.4776 -0.0114  0.0006  0.4459
                                           0.0066  0.7566  0.0112 -0.0003  0.0000
                                           0.0107  0.0000  0.0000 -0.0059 -0.0119
    5. (1.98670) BD ( 1) H   5 - B  10  
               ( 54.03%)   0.7351* H   5 s( 99.96%)p 0.00(  0.04%)
                                           0.9998  0.0002  0.0094 -0.0167  0.0000
               ( 45.97%)   0.6780* B  10 s( 37.47%)p 1.67( 62.46%)d 0.00(  0.07%)
                                          -0.0006  0.6120  0.0129 -0.0016 -0.3888
                                           0.0132  0.6875 -0.0234 -0.0006  0.0000
                                          -0.0202  0.0000  0.0000 -0.0122 -0.0098
    6. (1.98495) BD ( 1) H   6 - N   8  
               ( 28.08%)   0.5299* H   6 s( 99.91%)p 0.00(  0.09%)
                                          -0.9996  0.0010 -0.0295  0.0003  0.0000
               ( 71.92%)   0.8481* N   8 s( 22.82%)p 3.38( 77.15%)d 0.00(  0.03%)
                                           0.0002 -0.4776  0.0114 -0.0006  0.8782
                                           0.0131 -0.0078 -0.0001  0.0003  0.0000
                                           0.0002  0.0000  0.0000 -0.0122  0.0119
    7. (1.98438) BD ( 1) N   7 - B  10  
               ( 76.47%)   0.8745* N   7 s( 38.55%)p 1.59( 61.44%)d 0.00(  0.01%)
                                           0.0000 -0.6209 -0.0043  0.0001  0.7807
                                          -0.0082 -0.0679 -0.0137  0.0003  0.0000
                                           0.0011  0.0000  0.0000 -0.0071  0.0085
               ( 23.53%)   0.4851* B  10 s( 31.25%)p 2.19( 68.50%)d 0.01(  0.25%)
                                           0.0003 -0.5587  0.0174 -0.0032 -0.8251
                                          -0.0456  0.0298 -0.0355 -0.0003  0.0000
                                           0.0065  0.0000  0.0000 -0.0447  0.0206
    8. (1.82090) BD ( 2) N   7 - B  10  
               ( 88.21%)   0.9392* N   7 s(  0.00%)p 1.00(100.00%)d 0.00(  0.00%)
                                           0.0000  0.0000  0.0000  0.0000 -0.0003
                                           0.0000  0.0006  0.0000  1.0000 -0.0003
                                           0.0000 -0.0028 -0.0037  0.0000  0.0000
               ( 11.79%)   0.3433* B  10 s(  0.00%)p 1.00( 99.62%)d 0.00(  0.38%)
                                           0.0000  0.0000  0.0000  0.0000 -0.0003
                                           0.0000  0.0007  0.0000  0.9976 -0.0315
                                           0.0000  0.0606 -0.0101  0.0000  0.0000
    9. (1.98438) BD ( 1) N   7 - B  12  
               ( 76.47%)   0.8745* N   7 s( 38.55%)p 1.59( 61.44%)d 0.00(  0.01%)
                                           0.0000  0.6209  0.0043 -0.0001  0.4376
                                           0.0080 -0.6501  0.0138  0.0006  0.0000
                                          -0.0066  0.0000  0.0000 -0.0029 -0.0085
               ( 23.53%)   0.4851* B  12 s( 31.25%)p 2.19( 68.50%)d 0.01(  0.25%)
                                          -0.0003  0.5587 -0.0174  0.0032 -0.4258
                                           0.0090  0.7074  0.0571 -0.0006  0.0000
                                          -0.0414  0.0000  0.0000 -0.0182 -0.0206
   10. (1.98438) BD ( 1) N   8 - B  10  
               ( 76.47%)   0.8745* N   8 s( 38.55%)p 1.59( 61.44%)d 0.00(  0.01%)
                                           0.0000  0.6209  0.0043 -0.0001  0.3442
                                          -0.0159  0.7041  0.0000 -0.0004  0.0000
                                           0.0058  0.0000  0.0000 -0.0043 -0.0085
               ( 23.53%)   0.4851* B  10 s( 31.25%)p 2.19( 68.50%)d 0.01(  0.25%)
                                          -0.0003  0.5587 -0.0174  0.0032 -0.3997
                                          -0.0540 -0.7224 -0.0208  0.0004  0.0000
                                           0.0365  0.0000  0.0000 -0.0267 -0.0206
   11. (1.98438) BD ( 1) N   8 - B  11  
               ( 76.47%)   0.8745* N   8 s( 38.55%)p 1.59( 61.44%)d 0.00(  0.01%)
                                           0.0000 -0.6209 -0.0043  0.0001 -0.3316
                                           0.0159  0.7101 -0.0003 -0.0006  0.0000
                                           0.0056  0.0000  0.0000  0.0045  0.0085
               ( 23.53%)   0.4851* B  11 s( 31.25%)p 2.19( 68.50%)d 0.01(  0.25%)
                                           0.0003 -0.5587  0.0174 -0.0032  0.3868
                                           0.0536 -0.7294 -0.0217  0.0006  0.0000
                                           0.0355  0.0000  0.0000  0.0280  0.0206
   12. (1.82091) BD ( 2) N   8 - B  11  
               ( 88.21%)   0.9392* N   8 s(  0.00%)p 1.00(100.00%)d 0.00(  0.00%)
                                           0.0000  0.0000  0.0000  0.0000 -0.0003
                                           0.0000  0.0007  0.0000  1.0000 -0.0003
                                           0.0000  0.0046 -0.0005  0.0000  0.0000
               ( 11.79%)   0.3433* B  11 s(  0.00%)p 1.00( 99.62%)d 0.00(  0.38%)
                                           0.0000  0.0000  0.0000  0.0000 -0.0003
                                           0.0000  0.0006  0.0000  0.9976 -0.0315
                                           0.0000 -0.0215  0.0575  0.0000 -0.0001
   13. (1.98438) BD ( 1) N   9 - B  11  
               ( 76.47%)   0.8745* N   9 s( 38.55%)p 1.59( 61.44%)d 0.00(  0.01%)
                                           0.0000 -0.6209 -0.0043  0.0001  0.7818
                                          -0.0079  0.0540  0.0138  0.0002  0.0000
                                          -0.0008  0.0000  0.0000 -0.0072  0.0085
               ( 23.53%)   0.4851* B  11 s( 31.25%)p 2.19( 68.50%)d 0.01(  0.25%)
                                           0.0003 -0.5587  0.0174 -0.0032 -0.8255
                                          -0.0450 -0.0151  0.0363 -0.0002  0.0000
                                          -0.0049  0.0000  0.0000 -0.0449  0.0206
   14. (1.98438) BD ( 1) N   9 - B  12  
               ( 76.47%)   0.8745* N   9 s( 38.55%)p 1.59( 61.44%)d 0.00(  0.01%)
                                           0.0000  0.6209  0.0043 -0.0001  0.4492
                                           0.0077  0.6422 -0.0139 -0.0003  0.0000
                                           0.0067  0.0000  0.0000 -0.0026 -0.0085
               ( 23.53%)   0.4851* B  12 s( 31.25%)p 2.19( 68.50%)d 0.01(  0.25%)
                                          -0.0003  0.5587 -0.0174  0.0032 -0.4383
                                           0.0080 -0.6997 -0.0573  0.0003  0.0000
                                           0.0420  0.0000  0.0000 -0.0168 -0.0206
   15. (1.82092) BD ( 2) N   9 - B  12  
               ( 88.21%)   0.9392* N   9 s(  0.00%)p 1.00(100.00%)d 0.00(  0.00%)
                                           0.0000  0.0000  0.0000  0.0000 -0.0003
                                           0.0000  0.0007  0.0000  1.0000 -0.0003
                                           0.0000 -0.0018  0.0043  0.0000  0.0000
               ( 11.79%)   0.3433* B  12 s(  0.00%)p 1.00( 99.62%)d 0.00(  0.38%)
                                           0.0000  0.0000  0.0000  0.0000 -0.0004
                                           0.0000  0.0006  0.0000  0.9976 -0.0315
                                           0.0000 -0.0391 -0.0474  0.0000  0.0000
   16. (1.99943) CR ( 1) N   7           s(100.00%)p 0.00(  0.00%)
                                           1.0000  0.0001  0.0000  0.0000  0.0001
                                           0.0000  0.0001  0.0000  0.0000  0.0000
                                           0.0000  0.0000  0.0000  0.0000  0.0000
Second order perturbation theory analysis of Fock Matrix in NBO basis

I only selected the ones whose E2 value is larger than 20kcal/mol.

Second Order Perturbation Theory Analysis of Fock Matrix in NBO Basis
    Threshold for printing:   0.50 kcal/mol
                                                                             E(2)  E(j)-E(i) F(i,j)
        Donor NBO (i)                     Acceptor NBO (j)                 kcal/mol   a.u.    a.u. 
===================================================================================================
within unit  1
  8. BD (   2) N   7 - B  10        /120. BD*(   2) N   9 - B  12           37.57    0.33    0.100
 12. BD (   2) N   8 - B  11        /113. BD*(   2) N   7 - B  10           37.57    0.33    0.100
 15. BD (   2) N   9 - B  12        /117. BD*(   2) N   8 - B  11           37.56    0.33    0.100
Natural bond orbital
Natural Bond Orbitals (Summary):
                                                           Principal Delocalizations
          NBO                        Occupancy    Energy   (geminal,vicinal,remote)
====================================================================================
Molecular unit  1  (H6B3N3)
    1. BD (   1) H   1 - B  11          1.98670    -0.40393  115(v),119(v),56(v),66(v)
    2. BD (   1) H   2 - N   9          1.98495    -0.61481  114(v),116(v),119(g),118(g)
                                                   86(v),96(v)
    3. BD (   1) H   3 - B  12          1.98670    -0.40393  118(v),112(v),66(v),46(v)
    4. BD (   1) H   4 - N   7          1.98495    -0.61481  119(v),115(v),112(g),114(g)
                                                   76(v),96(v)
    5. BD (   1) H   5 - B  10          1.98670    -0.40393  116(v),114(v),46(v),56(v)
    6. BD (   1) H   6 - N   8          1.98495    -0.61482  112(v),118(v),116(g),115(g)
                                                   76(v),86(v)
    7. BD (   1) N   7 - B  10          1.98438    -0.68871  114(g),111(v),109(g),108(v)
                                                   97(v),119(v)
    8. BD (   2) N   7 - B  10          1.82090    -0.27139  120(v),102(v),98(v),35(v)
                                                   113(g)
    9. BD (   1) N   7 - B  12          1.98438    -0.68869  112(g),107(v),109(g),110(v)
                                                   77(v),115(v)
   10. BD (   1) N   8 - B  10          1.98438    -0.68870  116(g),109(v),111(g),106(v)
                                                   87(v),118(v)
   11. BD (   1) N   8 - B  11          1.98438    -0.68873  115(g),107(v),111(g),110(v)
                                                   77(v),112(v)
   12. BD (   2) N   8 - B  11          1.82091    -0.27140  113(v),82(v),78(v),43(v)
                                                   117(g)
   13. BD (   1) N   9 - B  11          1.98438    -0.68868  119(g),111(v),107(g),108(v)
                                                   97(v),114(v)
   14. BD (   1) N   9 - B  12          1.98438    -0.68872  118(g),109(v),107(g),106(v)
                                                   87(v),116(v)
   15. BD (   2) N   9 - B  12          1.82092    -0.27139  117(v),92(v),88(v),27(v)
                                                   120(g)
   16. CR (   1) N   7                  1.99943   -14.13097  97(v),77(v),112(g),114(g)
   17. CR (   1) N   8                  1.99943   -14.13097  87(v),77(v),116(g),115(g)
   18. CR (   1) N   9                  1.99943   -14.13097  97(v),87(v),119(g),118(g)
   19. CR (   1) B  10                  1.99917    -6.65247  114(v),116(v),109(v),111(v)
   20. CR (   1) B  11                  1.99917    -6.65247  115(v),119(v),111(v),107(v)
   21. CR (   1) B  12                  1.99917    -6.65247  118(v),112(v),107(v),109(v)
   22. RY*(   1) H   1                  0.00025     0.73512

IR spectrum

IR spectrum of borazine molecule.

Charge distribution

Charge distribution (color) of borazine molecule.
Charge distribution (number) of borazine molecule.

Bond information

Borazine molecule.
Boratabenzene bond distance and angle
Bond Distance B-H 1.19494 Å
Bond Distance N-H 1.00974 Å
Average Bond Distance N-B 1.43068 Å
Average Bond Angle H-B-N 121.439
Average Bond Angle H-N-B 118.561

File link

Optimization:DOI:10042/to-https://spectradspace.lib.imperial.ac.uk:8443/dspace/handle/10042/20715

Frequency:DOI:10042/to-https://spectradspace.lib.imperial.ac.uk:8443/dspace/handle/10042/20717

NBO:DOI:10042/to-https://spectradspace.lib.imperial.ac.uk:8443/dspace/handle/10042/20718

Comparison

Name Charge distribution Charge distribution by number
Benzene
Boratabenzene
Pyridinium
Borazine
MO energy level Benzene Boratabenzene Pyridinium Borazine
17 (all pi bonding)
HOMO
LUMO

All have very similar totally bonding pi MO, with slightly outstretching electronegative atom for B atom and more for N atom. Pyridinium has the lowest energy and boratabenzene has the highest one for energy level 17. Benzene and borazine has similar energy.

For the HOMO, benzene and boratabenzene have similar MO shape while pyridinium and borazin share similar MO. The difference for the first pair is that B attracts more electrons, resulting relatively larger upper MO compared with benzene. Pyridinium has the lowest energy and boratabenzene has the highest one for HOMO. Benzene and borazine has similar energy.

As for the LUMO, all share similar MO. But N attracts more electrons and has larger MO towards itself. Pyridinium has the lowest energy and borazine has the highest one for LUMO. Boratabenzene is the second highest in energy and benzene is the second lowest in energy.

References

  1. J. GLASER and G. JOHANSSON, On the Structures of the Hydrated Thallium(III) Ion and its Bromide Complexes in Aqueous Solution, Acta Chem. Scand. A 36 (1982) No. 2
  2. SHRIVER & ATKINS, Inorganic Chemistry, 4th Ed., 2006, OUP
  3. SHRIVER & ATKINS, Inorganic Chemistry, 4th Ed., 2006, OUP