Synthesis, Characterization, Fluorescence and Electrochemical Studies of New Ferrocene Schiff base ligand Containing Nitrogen Donor Atoms and Its Palladium(II), Nickel(II) and Copper(II) Complexes

Abstract

A new bidentate Schiff base ligand was derived from the 2:1 molar condensation of ferrocenecarboxaldehyde with 3,4-diaminobenzophenone. Palladium, nickel and copper complexes were obtained by the reaction of the bidentate Schiff base ligand with palladium(II) acetate, nickel(II) acetate tetrahydrate and copper(II) acetate monohydrate in 1:1 molar ratio. In palladium, nickel and copper complexes the ligand was coordinated to metals via the imine N atoms. The fluorescence properties of the Schiff base ligand and its complexes were studied in DMSO. The molar conductivity values of complexes in acetone solvent implied the presence of non-electrolyte species. Electrochemical properties of the ligand and its metal complexes were investigated in the DMSO solvent at the 100 mVs−1 scan rate. The ligand and its metal complexes showed both reversible and irreversible processes at this scan rate. The products were characterized by FT-IR, 1H NMR, UV-Vis spectroscopies, elemental analysis, and conductometry.

Keywords

• schiff base
• ferrocene
• nickel(ii) complex
• copper(ii) complex
• fluorescence
• electrochemistry