Synthesis and Characterization of Copper (II), Nickel (II) Cobalt (II) and Fe (III) Complexes of Tetradentate Binucleating Schiff Base Ligands

Copper (II),Nickel (II), Cobalt (II) and Fe (III) Complexes of 4,4’-bis (2-Hydroxy acetophenolimine)-3,3’-disubstituted diphenyl methane and 5,5’-methylene/dithio bis (salicylaldehyde) Hexane-1,6-diamine have been synthesized and characterized by magnetic moment data, electronic and IR spectral measurements. The Molar conductivities show that the complexes are nonelectrolytes.The I.R spectra suggest that the ligands are bidentate in all cases, while the electronic spectra together with magnetic moment data suggest octahedral geometry for all the complexes. In all these complexes, the coordinating sites are azomethine nitrogen and phenoxy oxygen.