Table 1. (CQ0)2– ground state energetics in units of eV a .
Method | BDE | VDE | ADE |
ωB97XD//GEN1 | 0.93 (0.81) | 2.84 (2.85) | 2.51 (2.50) |
MP2//GEN1 b | 1.37 (0.82) | 2.45 (2.45) | — |
ωB97XD/GEN2 c | 0.85 (0.81) | 2.83 (2.83) | 2.42 (2.42) |
Experimental | 1.0 ± 0.2 | 2.87 ± 0.03 | 2.6 ± 0.1 |
aKey: BDE – adiabatic bond dissociation energy; VDE – vertical detachment energy; and ADE – adiabatic detachment energy. Counterpoise-corrected values are in parentheses.
bThis method provides a reasonable treatment of dispersion interactions (ref. 62).
cωB97XD//GEN1 geometry. All calculated values include zero-point energy corrections.