Synthesis and characterization of some transition metal complexes with 4-(phenyl/p-bromophenyl)thiazolyl hydrazone of furfural

P .G. Department of Chemistry, Sambalpur University, Jyoti Vihar, Burla-768 019, Orissa, India

E-mail : dhruba_dash@yahoo.co.in

Manuscript received 26 July 2006, revised 1 August 2007, accepted 7 August 2007

Complexes of the type [MI₂X ₂], where L = 2-(furfurylidine-imino-amino)-4-phenylthiazole (FPT) or 2- (furfurylidine-imino-amino)-4-(p-bromophenyl)thiazole (FBPT), M = Co^II , Cu^II and Ni^II and X = CI^-, Br^- or NO₃^- have been synthesized and characterized on the basis of elemental analysis, molar conductance, magnetic moment, thermal analysis together with electronic and IR spectral data. The results are in consistent with bidentate chelation of ligand with azo methine nitrogen and ring sulphur atom as bonding sites as inferred form IR spectra while the complexes of above stoichiometry are found to be in approximately octahedral environment; the symmetry being C₂ for Co^lI complexes and D_4h for others. From the results, the coexistence of paramagnetic and diamagnetic Ni^ll centers has been established.