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 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 36 Issue: 5-6
  • Publication Date: 2003
  • Doi Number: 10.1081/sl-120026609
  • Title of Journal : SPECTROSCOPY LETTERS
  • 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)

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).