X-Ray crystallographic and spectroscopic study of the configurations of isomeric 3-methylthio-1,5-diarylformazans and their interconversion in solution
Abstract
1 H N.m.r. and i.r. spectroscopic studies on solutions of Ar.N : N.C(SR) : N.NH.Ar (Ar = Ph, p-tolyl, or o-tolyl; R = CH3 or CD3) taken in conjunction with X-ray crystal structures of pure isomers have made it possible to establish the structural causes for temporal changes in the visible spectra.
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