Para-Nitroaniline (Figure ) exhibits a charge-transfer-type excitation. Due to the significant change in dipole moment induced by charge-transfer excitations, this molecule is well-suited for evaluating the performance of the developed method. The reference SCF calculations were carried out using SA5-CAS(16e,12o), as the S 4 state represents a charge-transfer state with the reaction field of the S 0 state. However, when the reaction field is equilibrated with the charge-transfer state (in water), the S 4 state becomes greatly stabilized relative to other states, ultimately settling as S 1 .