The Dipole Moments and Polarizabilities in the Excited States of Four Benzene Derivatives from Spectral Solvent Shifts

According to Abe’s expressions for the spectral solvent shifts (Bull. Chem. Soc. Japan, 39, 936 (1966)), the dipole moments, polarizabilities, and solvation energies in the excited states of nitrobenzene, anisole, acetophenone, and p-chloroacetophenone have been estimated. The large dipole moments of 6.78 and 4.23 D for the excited states of nitrobenzene and acetophenone respectively have supported Nagakura and Tanaka’s theory of the intramolecular charge-transfer band.