FT-IR spectroscopic investigation of transition metal (II) 2-aminopyridinetetracyanonickelate complexes

A series of Hofmann-type clathrate host molecules containing two 2-aminopyr idine (2-Apy) groups attached to transition metal (II) (M) tetracyanonickel ate frame, with the formula: M(2Apy)(2)Ni(CN)(4) (where M = Mn, Co, Cu or Z n), have been synthesised for the first time. Their FT-IR spectra are repor ted in the 400-4000 cm(-1) region. The spectral features suggest that the c ompounds are substantially isostructural to that of already known Hofmann t ype pyridine complex; M(py)(2)Ni(CN)(4). Moreover, 2Apy pyridine molecules are found to involve coordination through the ring nitrogen. The coordinati on effect on the 2Apy modes was analysed. (C) 2000 Elsevier Science B.V. Al l rights reserved.