Solvent effects on the absorption spectrum of the perylene-SbCl5 complex

Abstract

The perylene-SbCl₅ complex is characterized by two absorption maxima, whose positions depend on the nature of the solvent. The maximum in the region of 19×10⁻³ cm⁻¹ corresponds to the perylene cationic form and depends on the medium polarity, while another, in the region of 14×10⁻³ cm⁻¹, corresponding to the perylene-SbCl₅ complex, is governed primarily by the ability of the solvent to the electrophilic solvation. However, the quantitative generalization of the data on the frequencies of absorption maxima is only possible using multiparameter equations that take into account various properties of the solvents.