Vibrational Spectra of bis-(Maleonitrile Dithiolato)Ni(ii) Anion

Abstract
The in-plane normal modes of bis-(maleonitriledithiolato)Ni(ii) anion have been assigned on the basis of the normal coordinate analysis. The potential energy distribution among various internal coordinates indicates a large amount of vibrational mixing. The value of K (C–S) suggests a considerable amount of double bond character.