Solvent effect on the charge transfer absorption bands of chloranil-aromatic hydrocarbon complexes

Abstract

The charge transfer (CT) absorption bands of chloranil complexes with aromatic hydrocarbons such as benzene, toluene, xylene (<em>o</em>^-, <em>m</em>^- and <em>p^-</em>)<em>, </em>mesitylene and pyrene have been measured in different solvents and different values have been obtained in each set of the complexes. The CT energies of each complex in different solvents are plotted against the refractive index functions of the solvents and the extrapolated values obtained at unit refractive index are considered to be the corresponding values of the complexes in the gas phase.