Table 2. Relative Gibbs Free Energy Values (ΔG, in kcal/mol) and Vertical and Adiabatic Detachment Energy (VDE and ADE, in eV), Calculated for the [dGMP – 2H]2–·2H2O Systems at the CAM-B3LYP/6-31++G(d,p) Level, Characterized by Equilibrium Fraction xM ≥ 0.01a.
| name | ΔG | VDE | ADE | xM |
|---|---|---|---|---|
| two-m3 | 1.4 | 2.00 | 1.62 | 0.04 |
| two-m5 | 1.9 | 1.81 | 1.46 | 0.02 |
| two-m6 | 2.0 | 1.74 | 1.42 | 0.01 |
| two-m19 | 0.0 | 1.81 | 1.32 | 0.46 |
| two-m22 | 2.1 | 1.75 | 1.42 | 0.01 |
| two-m23 | 0.1 | 1.81 | 1.53 | 0.39 |
| two-m24 | 1.7 | 2.07 | 1.68 | 0.03 |
| weighted average | 1.82 | 1.43 | ||
| experimental values | 2.05 | 1.80 |
Data for the dominant two-19 and two-23 geometries, as well as weighted average VDE and ADE, are bolded. Characteristics for all the obtained geometries for doubly hydrated [dGMP – 2H]2– are gathered in Table S2 in the Supplementary Information.