Synthesis, spectroscopic and electrochemical studies of novel transition metal complexes with quadridentate Schiff base


Temel H. , Ilhan S., Aslanoglu M., Kilic A., Tas E.

JOURNAL OF THE CHINESE CHEMICAL SOCIETY, vol.53, no.5, pp.1027-1031, 2006 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 53 Issue: 5
  • Publication Date: 2006
  • Doi Number: 10.1002/jccs.200600136
  • Title of Journal : JOURNAL OF THE CHINESE CHEMICAL SOCIETY
  • Page Numbers: pp.1027-1031
  • Keywords: Schiff base, Co(II), Cu(II) and Ni(II) complexes, spectroscopic studies, redox properties, ZN(II) COMPLEXES, SPECTRAL CHARACTERIZATION, NI(II) COMPLEXES, CU(II), COPPER(II), COBALT(II), ZINC(II), LIGANDS

Abstract

A novel quadridentate, N2O2 type Schiff base, synthesized from 1,4-bis-(o-aminophenoxy)butane and 2-hydroxynaphthalin-1-carbaldehyde, forms stable complexes with transition metal ions such as Co(II), Cu(II) and Ni(II) in DMF. Microanalytical data, elemental analysis, magnetic measurements, UV-visible and IR-spectra as well as conductance measurements were used to confirm the structures: Electrochemical measurements show that metal complexes undergo quasi-reversible one-electron redox processes. The voltammetric results also revealed that the CuL complex has the highest electron transfer rate indicating that both the Cu(II) and Cu(I) forms appear in a similar planar configuration, so the electron transfer does not require larger reorganization of the complex.