Preparation, Characterization of Mixed-Ligand Complexes for Some Divalent Transition Metal Ions Involving Biologically Important Bidentate Ligands

Kamal Rashid Hsejan Al- Jorani


This paper describes the synthesis, characterization of mixed ligand complexes. The reaction of benzene-1,2-diamine(o-phenylenediamine) derivatives with anthranilic acid (Ant) yield 2-(1H-benzimidazol-2-yl)aniline derivatives (BIAD) as (primary ligands) in Effective and appropriate solvent, which confirmed by FT-IR, Elemental analyses (C. H. N, O) and 1H NMR spectral. These ligands coordinated with some transition metal ions (CoII ,NiII, CuII, ZnII ) and anthranilic acid as (secondary ligand) at the (1 : 1 : 1) ratio of the components to yielded a mixed-ligand complexes. All complexes have been studied by IR spectra, 1H NMR, Elemental analyses (C. H. N. O), atomic absorption, molar conductivity and magnetic moment. Ligands produce chelates with (1;1;1) (metal; ligands; ligand) interactive elements. From all results was suggested that octahedral geometry to complexes and have the formulae [M(BIAD)(Ant)(H2O)2]2- where M = Co(II), Ni(II), Cu(II) and Zn(II).


Mixed-Ligand; anthranilic acid; BIAD; Benzimidazole.

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