Synthesis and characterization of some homodinuclear mixed-ligand complexes of co(ii)‎ and cu(ii)‎ part-ii

Abstract EN

Homodinuclear mixed ligand complexes of metal ions of Co(II) and Cu(II) with anthra-nilic acid (L), phenylenediamine (L) and L-alanine (L) in the ratio of metal to ligands [2 : 1 : 1] have been prepared and characterized by elemental analyses, infrares, electron paramagnetic resonance spectroscopy and molar conductance, and confirmed that the prepared complexes with general formula of [M2LL'(OH)3 (H20) 3] NH2 > where M-Co (i) and Cu (II), L, L' = anthranilic acid, phenylenediamine or L-alaine and n = 3 or 12.

The elemental analysis exhibits that two metal ions are present in the complexes.

Infared spectra display one mode for chelation site, through oxygen of the carboxyl group in COO- and nitrogen of the amino group (NH2).

Electron paramagnetic resonance spectra indicate the presence of paramagnetic characters and support the geometrical structures of the complex-es under investigation, being octahedral structures.

The molar conductance measurements indicate non-electrolytic complexes.