Table 3. Errors (in kJ/mol) of Approximate CCSD(F12*)(T+) Energy Differences Using the FNO Approach with Various Thresholds with Respect to CCSD(F12*)(T+) and CBS CCSD(T) (in Parentheses) Reference Values for the KAW Test Set.
Threshold |
||||||
---|---|---|---|---|---|---|
Basis set | Error | 10–4 | 5 × 10–5 | 10–5 | 5 × 10–6 | 10–6 |
cc-pVDZ-F12 | MAE | 1.4 (3.3) | 1.5 (3.0) | 0.7 (3.3) | 0.4 (3.4) | 0.3 (3.6) |
RMS | 2.2 (4.2) | 2.3 (4.1) | 1.0 (4.4) | 0.7 (4.5) | 0.7 (4.6) | |
MAX | 7.7(16.8) | 7.8(19.2) | 3.2(21.3) | 2.2(21.2) | 4.5(19.0) | |
cc-pVTZ-F12 | MAE | 1.3 (1.5) | 1.5 (1.5) | 1.0 (1.0) | 0.6 (1.0) | 0.3 (0.9) |
RMS | 1.9 (2.2) | 2.2 (2.0) | 1.4 (1.4) | 1.0 (1.3) | 0.5 (1.2) | |
MAX | 10.1(12.7) | 6.6 (6.0) | 4.4 (4.8) | 3.5 (4.0) | 1.8 (3.9) | |
cc-pVQZ-F12 | MAE | 1.3 (1.4) | 1.4 (1.4) | 0.9 (1.0) | 0.6 (0.7) | 0.2 (0.4) |
RMS | 1.9 (2.0) | 2.1 (2.0) | 1.4 (1.3) | 1.0 (1.0) | 0.3 (0.6) | |
MAX | 6.8 (7.5) | 6.4 (6.5) | 4.6 (4.6) | 3.2 (3.9) | 1.9 (2.0) |