View source for Which of them has the lowest energy

These are the results for calculation of the energy of the 3 stereoisomers with HF methode, spin=restricted, ans the basis set 6-21G.

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<table border="1">
<tr><td>Form</td><td>Energy</td></tr>
<tr><td >RR</td><td >-1194.71529844</td></tr>
<tr><td >SS</td><td >-1194.71529844</td></tr>
<tr><td >meso </td><td >-1194.71784298</td></tr>
</table>

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<p>So the form RR and SS have exactly the same energy, but there is a difference of energy between them and the meso form of around 2.5 millihartrees, and it is already a significant difference.</p>


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