Computed relative free energies in kJ mol−1 of fac and mer isomers in the gas phase and in water. Single point (SP) energies are calculated at the MP2/6-311+G(d,p) level using the B3LYP/6-31++G(d,p) geometries.
| B3LYP/6-31++G(d,p) | SP-MP2/6-311+G(d,p) | M06/TZ2P | B3LYP/aug-cc-PVTZ | MP2/6-31++G(d,p) | |||
|---|---|---|---|---|---|---|---|
| Isomers | Water | Gas | Water | Gas | Gas | Gas | Gas |
| mer-2 | 1.5 | 0 | 1.0 | 1.3 | 0.02 | 0.2 | 3.2 |
| mer-1 | 0 | 0.4 | 0 | 0 | 0 | 0 | 0 |
| fac | 10.7 | 9.7 | 3.6 | 3.2 | 9.5 | 7.8 | 7.8 |