Synthesis and Investigation of Complex Compounds of Divalent Manganese, Copper, Cobalt and Zinc with Tryptophan and their Biological Activity

Abstract

New complex compounds with ligand (tryptophan) of the composition [MnClL2(H2O)] H2O, [ÐiuCl2L (H2O)], [CoCl2L2]2H2O, [ZnL2(H2O)2] H2O were synthesized. It is shown that the composition of the complexes obtained depends on the ratio of the initial components. The composition and structure of the complexes were studied by elemental analysis, IR, UV-VIS, EPR spectral and thermogravimetric analysis. The method of IR and UV spectroscopy showed that the ligands in the composition of the metal (II) complexes enter the neutral form and coordinate with the complexing agent through the nitrogen atom. The results of thermogravimetric studies have shown that the final product of the thermal decomposition of all compounds is metal oxide, respectively.