. This is comparable to the shift of ∆E = -1.15 eV that was reported previously for this system using TD-DFT + ptSS-PCM. Table lists the lowest CT excitation energy that is obtained for C 2 H 4 • • • C 2 F 4 in six different solvents including cyclohexane (cHex), toluene, tetrahydrofuran (THF), chlorobenzene (ClBz), benzonitrile (BzCN), and water. Because we consider only the electrostatic part of the solvation energy, each solvent is fully characterized by the pair of values ε 0 and ε ∞ . Although nonelectrostatic solvation models are reasonably well established for groundstate solvation (e.g., using the SMx models), there has been much less work on nonelectrostatic effects for excited states and we do not consider that topic here. (For , Eq. ( ). b ∆G ptSS(1) k , Eq. ( ). c Eq. ( ).