Synthesis and Characterization of Some Divalent Transition Metals Complexes of Schiff Bases Derived from Salicylaldehyde Diamine Derivatives.

Abstract

The synthesis and characterization of tetra-dentate Schiff bases derived from salicylaldehyde and ethylenediamine have been subject for many studies (1). The present study includes synthesis Schiff bases [N,N'–bis(4-benzeneazo)salicylaldehyde] ethylenediamine ( H2L ) together with its complexes with Ni (II) , Co (II) and Cd(II) . The results has been compared with other similar ligand [ N,N'- ethylene bis(salicyldemimine)] H2L' ; Which has been also prepared with similar complexes and subjected to the same study. The study discuss the coordination mode of the ligands under investigation, where the ligands expect to behave as tetra-dentate complexes. Intra and inter-hydrogen bonding would expect to affect the coordination course. Characterization of ligands and complexes were done by elemental analysis, molar conductivity measurements, infra-red, electronic spectra, and atomic adsorption.