Electrochemical studies of a new Schiff base ligand and its copper complex containing tetradentate Schiff base ligand

A new Schiff base ligand and its copper(II) complex have been synthesized by the reaction of the new tetradentate Schiff base ligand with copper(II) acetate in 1:1 molar ratio. In this complex, the ligand was coordinated to the metals via the imine nitrogen and sulfur atoms. The complex have been found to possess 1:1 metal to ligand stoichiometry and the molar conductance data revealed that the metal complex were non-electrolyte. The Schiff base and its complex have been characterized by FT-IR, 1H NMR, UV/Vis, elemental analysis and conductometry. Electrochemical properties of the ligand and its metal complex were also investigated in DMSO solvent at the 100 mVs−1 scan rate. The ligand and its copper complex showed both quasi-reversible and irreversible processes at this scan rate.