Synthesis and Characterization of Copper (II ), Zinc (II ),Cobalt (II) and Nickel (II) complexes Derived from2-Hydroxy-1-naphthaldehyde and DL- glycyl-DL- glycin

Abstract

Copper (II ) , Zinc (II ) , Cobalt (II) and Nickel (II ) complexes with the Schiff base derived from 2-Hydroxy-1-naphthaldehyde and DL-glycine -DL-glycine were synthesized.These compounds have been characterized by elemental analysis , conductivity measurement, IR and UV-Vis.The molar conductance measurement indicate that the complexes are 1:1 non-electrolytes. The IR data demonstrate the tetradentate binding of the ligand .The COO- stretching bands in the IR spectra suggest that carboxylate acts as a monodentate group when binding with metal . The bonding sites are the carboxylate oxygen , imino nitrogen , amide nitrogen , and phenolic oxygen.