Synthesis and characteristics of NiII and CoII complexes of Schiff base ligands containing triphenylphosphine

Department of Chemistry, Periyar University, Salem-636 011, Tamilnadu, India E-mail : viswanathamurthi@yahoo.com Manuscript received 22 November 2007, revised 16 April 2008, accepted 28 April 2008 The reactions of nickel(ll) and cobalt(ll) complexes, [MCI2(PPh3)2] (M = Ni or Co) with bidentate Schiff base ligands derived from acetylacetone or benzoylacetone with aniline, o-, m-nitroaniline have been carried out. The complexes were characterized by elemental analysis, spectral (IR, electronic) and cyclic voltammetric studies and are formulated as [MCI(PPh3)(L)] (M = Ni or Co; L = bidentate Schiff base ligand). A square planar structure has been tentatively proposed for all the new complexes