A series of complexes of general formula [ML(AA)(H2O)] ; where M=Co, Ni and Cu ions; LH2=O-xanthatosalicyldazine and AA=amino acids(glycine, alanine, valine, leucine and phenylalanine were synthesized. The complexes were synthesized from the direct reaction of the metal (II) chloride with a mixture of the ligand (LH2) and the amino acids (AA) in a molar ratio of 1:1:1 respectively. These complexes were characterized by several physical methods such as melting points, molar conductance and elemental analysis (M), magnetic moments as well spectral such as infrared and electronic spectral measurements. These studies revealed that the Ligand (LH2) was behaved as a tridentate, divalent and coordinated to the metal(II) ion through both the oxygen atoms of xanthato groups and one nitrogen atom of azine moiety. As well, the existence of one aqua molecule with the nitrogen and the oxygen atoms of the amino acids to give the most probable octahedral geometry around each metal ion in each complex. The elemental analysis (M) as well the infrared spectra proved the presence of an aqua molecule inside the coordination sphere. Their molar conductivities revealed the non-electrolytic behavior of the synthesized complexes.
Key words: O-xanthatosalicyldazine, amino acids, metal (II), Complexes.