Table 4. NBOs and Second Order Stabilization Energies for the Donor–Acceptor Interactions of Compounds 1–3a.
| compound | donor | acceptor | E(2) |
|---|---|---|---|
| 1 | LP(S) | LV(S) | 9.38 |
| LP(Ag) | LV(Ag) | 11.48 | |
| 2 | LP(S) | LV(S) | 8.41 |
| LP(Ag) | LV(Ag) | 13.09 | |
| 3 | LP(S) | LV(S) | 7.02 |
| LP(Ag) | LV(Ag) | 8.85 |
Energies in kcal/mol.