FT-IR Spectroscopic Study on Some 4-(3-Cyclohexen-1-yl)pyridine Metal(II) Tetracyanonickelate Complexes

New Hofmann-type complexes in the form of M(4-Chpy)2Ni(CN)4 [where 4-Chpy = 4-(3- cyclohexen-1-yl)pyridine and M = Ni, Co] were prepared in powder form, and their infrared spectra are reported in the range of 4000 - 400 cm−1. The spectral findings suggest that these compounds are similar in structure to the Hofmann-type complexes, and their structure consists of polymeric layers |M-Ni(CN)4|∞ with the 4-(3-cyclohexen-1-yl)pyridine molecule bound to the metal atom (M). PACS: 33.20.Ea, 33.20.Tp, 82.75-z