Table 2. Relative Energy of [La(NO3)]2+, [Gd(NO3)]2+, and [Lu(NO3)]2+ (Δ(ΔG)rxn) Calculated with Method A and B, Relative to CCSD(T)-FSII/cc-pwCV∞Z-DK3 and Associated Relative Computational Costa.
method A Eref[MP2] + ΔECC + ΔECV |
method B Eref[CCSD(T)] + ΔECV |
|||
---|---|---|---|---|
Δ(ΔG)rxn (kcal mol–1) | relative cost (%) | Δ(ΔG)rxn (kcal mol–1) | relative cost (%) | |
La | 0.11 | 10 | 0.32 | 25 |
Gd | –0.21 | 10 | –0.30 | 34 |
Lu | –0.44 | 11 | –0.21 | 70 |
Relative computational cost is shown as a percentage and it is calculated as relative cost = (CPU hours with method A or B)/(CPU hours with CCSD(T)-FSII/cc-pwCV∞Z-DK3) × 100; Δ(ΔG)rxn = ΔGrxn(method A or B) – ΔGrxn(CCSD(T)-FSII/cc-pwCV∞Z-DK3).