Spectroscopic and conductance studies of new transition metal complexes with a Schiff base derived from 4-methoxybenzaldehyde and 1,2-bis(p-aminophenoxy)ethane

Cakir U., Temel H., Ilhan S., Ugras H.

SPECTROSCOPY LETTERS, vol.36, no.5-6, pp.429-440, 2003 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 36 Issue: 5-6
  • Publication Date: 2003
  • Doi Number: 10.1081/sl-120026609
  • Journal Name: SPECTROSCOPY LETTERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.429-440
  • Keywords: 1,2-bis(p-aminophenoky)ethane, 4-methoxybenzaldehyde, Schiff base complexes, spectra studies and stability constants, ZN(II) COMPLEXES, COPPER(II), MANGANESE(III), NICKEL(II), COBALT(II), ZINC(II), CU(II), NI(II)
  • Yozgat Bozok University Affiliated: Yes

Abstract

Four new metal complexes of Cu(II), Ni(II), Zn(II) and Co(III) with Schiff base derived from 4-methoxybenzaldehyde and 1,2-bis(p-aminophenoxy)ethane have been prepared and characterized by magnetic susceptibility, conductance measurements, elemental analyses, UV-Vis, H-1 NMR and IR spectra studies. The magnetic and spectroscopic data indicate an octahedral geometry for the six-coordinate complexes. The ligand was used for complexation studies. Stability constants were measured by means of a conductometric method. Furthermore, the stability constants for complexation between ZnCl2, Cu(NO3)(2) and AgNO3 salts and ligand (L) in 80% dioxane-water and pure methanol were determined from conductance measurements. In 80% dioxane-water, the stability constants (log Ke) increase inversely with the crystal radii in the order Ag(I) < Zn(II) < Cu(II).