SYNTHESIS, CHARACTERIZATION AND STABILITY OF MIXED-LIGANDS METAL-COMPLEXES - M(II) - (AROMATIC-ACIDS) - (IMIDAZOLES)

Ternary mixed ligands metal complexes of Co(II), Ni(II) and Cu(II) wit h aromatic acids (phthalic and salicylic) as primary ligands and imida zoles emidazole and 2-methylimidazole) as secondary ligands are synthe sized and characterized making using microchemical and thermal analysi s as well as infared, electronic spectra and electric conductance meas urements. Formation constants of the binary and ternary complexes form ed in such systems are determined by pH measuring equipment at t = 25 +/- 0.1-degrees-C and mu = 0.1 mole dm-3 (NaClO4). It is deduced that the stability of the ternary complex is higher than that of the corres ponding binary imidazole one.