Table 2. Best Agreement between GTO and PW Interaction Energies of the S22* Test Set at Each Cardinal Numbera.
| level | size | set | BSSE corr. | MAE | max dev. |
|---|---|---|---|---|---|
| HF | D | non-aug | CP | 0.16 | 0.69 |
| aug | CP | 0.07 | 0.48 | ||
| T | non-aug | CP | 0.06 | 0.15 | |
| aug | CP | 0.04 | 0.12 | ||
| Q | non-aug | CP | 0.02 | –0.08 | |
| aug | CP | 0.02 | 0.05 | ||
| 5 | non-aug | CP | 0.02 | 0.04 | |
| aug | CP | 0.02 | 0.05 | ||
| MP2 | D | non-aug | half-CP | 0.97 | 2.71 |
| aug | half-CP | 0.68 | –1.88 | ||
| T | non-aug | half-CP | 0.24 | 0.70 | |
| aug | CP | 0.30 | 0.82 | ||
| Q | non-aug | half-CP | 0.11 | 0.31 | |
| aug | CP | 0.11 | 0.23 | ||
| 5 | non-aug | half-CP | 0.07 | –0.20 | |
| aug | CP | 0.06 | 0.16 |
Mean absolute errors (MAE) and maximum deviations are in kcal/mol.