Vibrational spectra of fluorine-containing azoxybenzenes

Abstract

The vibrations of the azoxy group in azoxybenzene have been assigned on the basis of calculations of the frequencies and normal modes of vibrations for it. The introduction of fluorine atoms into the benzene rings has practically no influence on the frequencies of the stretching vibrations of the azoxy group. An increase in the number of fluorine atoms in the benzene rings of azoxybenzenes lowers the intensities of the stretching vibrations of the azoxy and phenyl groups in the IR spectra.