Salicylaldimine complexes, magnetic

Holm, R. H. Spectral and magnetic studies of substituted Ni(II) salicylaldimine complexes, in Advances in the Chemistry of the Coordination Compounds, Kirschner, S. (ed.). Macmillan New York, 1961. 

Complexes of the bis(salicylaldimine) series have been prepared in which the nitrogen substituent R carries a functional group such as "OCH, -OH, -N(CHj)2. These complexes are shown to exist as octahedral complexes in the crystalline state, but in solution are involved in observably temperature dependent structural equilibria amongst octahedral, tetrahedral, and planar forms with the proportion of tetrahedral species increasing with increasing temperature. The magnetic susceptibilities, optical spectra, and proton resonance contact shifts are analyzed in terms of these equilibria. 

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