Synthesis, spectral characterization and electrochemical studies of copper(II) and cobalt(II) complexes with novel tetradentate salicylaldimines


Tas E., Aslanoglu M., Ulusoy M., Temel H.

JOURNAL OF COORDINATION CHEMISTRY, vol.57, no.8, pp.677-684, 2004 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 57 Issue: 8
  • Publication Date: 2004
  • Doi Number: 10.1080/00958970410001720980
  • Title of Journal : JOURNAL OF COORDINATION CHEMISTRY
  • Page Numbers: pp.677-684
  • Keywords: salicylaldimine, copper(II) complexes, cobalt(II) complexes, spectroscopy, cyclic voltammetry, electrochemical properties, NICKEL(II), ZINC(II), CU(II), NI(II), CRYSTAL, REDOX

Abstract

Several new complexes of Schiff bases obtained by the condensation of 1,2-bis(p-aminophenoxy)ethane and 1,2-bis(in-aminophenoxy)ethane with 3,5-di-tert-butyl-2-hydroxybenzaldehyde have been synthesized, and characterized by elemental analyses, FT-IR, UV-VIS, H-1 NMR spectroscopy, magnetic susceptibility measurements and cyclic voltammetry. The metal to ligand ratios of the Co(II) and Cu(II) complexes were found to be 1:1. The coordination of the Schiff base appears to occur through the two azomethine nitrogens and two o-OH groups. Electrochemical data suggest the existence of copper(II)/copper(I) and cobalt(II)/cobalt(I) redox couples in DMSO along with an irreversible oxidation peak assigned to the oxidation of ligands for all of the complexes.