Synthesis and Vibrational Spectroscopic Study of Some Metal(II) Halide and Tetracyanonickelate Complexes of Isonicotinic Acid

Authors : Ahmet ATAÇ, Fehmi BARDAK

Pages : 609-618

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Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The Minsert ignore into journalissuearticles values(IN);2Niinsert ignore into journalissuearticles values(CN);4 [where M: Cu, Mn, Zn, IN: Isonicotinic acid, abbreviated to M-Ni-IN] tetracyanonickelate and some metal halide complexes with the following stoichiometries: Cuinsert ignore into journalissuearticles values(IN);X2 insert ignore into journalissuearticles values(X:Br,I);, Cdinsert ignore into journalissuearticles values(IN);2X2, insert ignore into journalissuearticles values(X:Cl,Br);, and Zninsert ignore into journalissuearticles values(IN);4X2 insert ignore into journalissuearticles values(X:Br,I); were synthesized for the first time. Their FT-IR spectra were reported in the 4000-400 cm-1 region. Vibrational assignments were given for all the observed bands. The analysis of the vibrational spectra indicates that there are some structure-spectrum correlations. For a given series of isomorphous complexes, the sum of the difference between the values of the vibrational modes of uncoordinated isonicotinic acid that were coordinated to the metal ion isonicotinic acid was investigated and found to depend on the halogen for a given metal. The proposed structure of tetracyanonickelate complexes consists of polymeric layers of |M-Ni insert ignore into journalissuearticles values(CN);4|\infty with the isonicotinic acid molecules bound directly to the metal insert ignore into journalissuearticles values(M); atoms. Certain chemical formulae were determined using the elemental analysis results.
Keywords : Infrared spectra, isonicotinic acid, metal halide complexes, tetracyanonickelate complexes