The parameters used for our estimations are summarized in Table . The dipole moments of the ground state (𝜇𝜇 g = 2.95 D for q-ax. and 𝜇𝜇 g = 3 .05 D for q-eq.) and the Onsager cavity radii (𝑎𝑎 = 6.41 Å for q-ax., 𝑎𝑎 = 6.44 Å for q-eq.) were calculated by the quantum chemical calculations. For the values of 𝜀𝜀 and 𝐶𝐶 , we used the values reported by Loukova et al. The values of the permittivity of the mixture solvents 𝜀𝜀 mix were calculated by the following equation ,