Synthesis, spectroscopic, thermal and structural properties of [M(3-aminopyridine)2Ni(μ-CN)2(CN)2]n (M(II) = Co and Cu) heteropolynuclear cyano-bridged complexes

Two novel cyano-bridged heteropolynuclear complexes, [Co(3-aminopyridine)(2)Ni(mu-CN)(2)(CN)(2)](n) and [Cu(3-aminopyridine)(2)Ni(mu-CN)(2)(CN)(2)](n) have been synthesized and characterized by elemental, thermal, FT-IR and FT-Raman spectroscopies. The structures of complexes have been determined by X-ray powder diffraction. The FT-IR and FT-Raman spectra of complexes have been recorded in the region of 3500-400 cm(-1) and 3500-100 cm(-1), respectively. General information was acquired about structural properties of these complexes from FT-IR and FT-Raman spectra by considering changes at characteristic peaks of the cyano group and 3AP. The splitting of the nu(C N) stretching bands in the FT-IR spectra for complexes indicates the presence of terminal and bridging cyanides. The thermal behaviors of these complexes have been also investigated in the range of 25-950 degrees C using TG and DTG methods. Magnetic susceptibility measurements were made at room temperature using Gouy-balance. (C) 2015 Elsevier B.V. All rights reserved.