| Substituent |
3D eq |
3D ax |
A
value (Free energy difference,
equatorial - axial) |
| Methyl |
1.8 |
||
| Ethyl |
1.8 |
||
| Isopropyl |
2.1 |
||
| tert-Butyl |
>4.7 |
||
| Phenyl |
2.9 |
||
| C≡CH |
0.5 |
||
| OH (aprotic) |
0.87 |
||
| OH (protic) |
0.52 |
||
| F |
0.26 |
||
| Cl |
0.53 |
||
| Br |
0.59 |
||
| I |
0.47 |
||
| CN |
0.2 |
||
| CH3CO2 |
0.71 |
||
| CH3O |
0.60 |