Talk:Mod:0309rcba

Cp: Energies good. Your "endo" structure looks exo to me, but hard to tell without a rotatable structure! Discussion good, but note that the kinetic product does NOT have to be the higher energy of the two - the same product can be preferred both kinetically AND thermodynamically! Your analysis of the endo-preference in terms of charge stabilisations (using valence bond representations) is unusual - normally people consider frontier MOs!

NAD: Structures and discussion OK, although you were asked to use MMFF rather than MM2.

Taxol: Your structure 9 has the wrong alkene geometry, but 10 is OK. I don't buy your hyperconjugation argument - the C-H needs to be perpendicular to C=O to overlap with the pi*.

CCl2: Structures, orbitals, vibrations all good. Analysis of C-Cl good. What about the C=C strength/frequencies?

Mini-project: Sound choice (if not especially imaginative given its similarity to the first part!) Structures, energies and 13C calcs OK. A quantitative comparison of calculated and experimental values would have been good. Don't think the 1H or IR calculations were likely to be useful. Still not clear that you've thought about how you would tell which was which if you didn't have the lit spectra to compare to.

Overall - good effort! All the calcs and most of the discussion done