Fourier Transform‐Infrared Spectroscopic Study of Isonicotinamide Metal(II) Tetracyanonickelate and Halide Complexes

Abstract

In this study, fourier transform-infrared FT‐IR spectra of M(iso)2Ni(CN)4 (where M = Cd, Zn, Ni, or Cu; iso = isonicotinamide; abbreviated to M–Ni‐iso) and Cd(iso)2X2 (where X = Cl, Br, or I) complexes are reported in the 4000–400 cm−1 range. Vibrational assignments are given for all the observed bands. The analysis of the vibrational spectra indicates that there are some structure–spectra correlations. The proposed structure of tetracyanonickelate complexes consists of polymeric layers of |M–Ni(CN)4|∞ with the isonicotinamide molecules bound directly to the metal (M).