Synthesis, characterization, biological and electrochemical investigation of copper (II) complexes containing 4-chloro-2-[2, 6-diisopropylphenylimino) methyl] phenol Schiff base ligand and aromatic diinines

Abstract

Abstract Herein we reported the synthesis of Schiff base ligand and their complexes (1–5) with copper (II) metal ion and aromatic diimines. The Schiff base derived from the condensation of 2, 6- diisopropylaniline and 5- chlorosalicylaldehyde.The Schiff base ligand and their complexes (1–5) have been characterized by microanalysis, molar conductance, room temperature magnetic susceptibility, FT – IR, UV–visible, Cyclic voltammetry and mass spectroscopy techniques. Their low electrical conductance values indicate that the complex 1 is non electrolyte and remaining other complexes 2-5 are in electrolyte nature. The monomeric nature of the complexes is evidenced from their magnetic susceptibility values. The electronic spectra of the complexes suggest that they have distorted octahedral geometry around the metal ion. The electrochemical behavior, the anodic and cathodic peak potential and the number of electron transfer have been calculated by using cyclic voltammetry. These synthesized complexes have been tested against micro-organisms such as S. aureus, B. bacillus (Gram – positive) and E. coli, P. aeruginosa (Gram – negative) bacterial strains with known antibacterial and antifungal drugs (amoxyclav and oxiconazole).