The Voronoi-PEqS solvation energies are systematically smaller than PCM values, with absolute differences ranging from 0.8-3.0 kcal/mol and averaging 1.8 kcal/mol. However, these differences amount to no a Calculations at the HF/def2-TZVPD level. b Permittivity construction; see Fig. . c Voronoi construction of ε(r) using L = 0.5 Å, k = 10, and a 0.05 Å grid spacing.