Spectres de vibration du trans-azoxybenzène et de quelques dérivés isotopiques

Abstract

The I.R. (50–3200 cm −1) and Raman (100–3200 cm −1) spectra of the trans-azoxybenzenes C 6H 5NONC 6H 5, C 6D 5NONC 6D 5 and C 6H 5N 15ON 15C 6H 5 have been analyzed. The infrared dichroïsm of an oriented crystal of C 6H 5NONC 6H 5 and C 6D 5NONC 6D 5 has been also observed between 300 and 1600 cm −1. An assignment of the fundamental vibrations is proposed. The electronical delocalization between the phenyl and the azoxy groups is discussed.