Mixed Ligand Complexes of Bivalent Metal Ions with 4-Amino-5 Mercapto-3-Methyl-1, 2, 4-Triazole and gycine/ Alanine.

Abstract

Mixed ligand complexes of the type [MLL´(H₂O)₂] where M = Mn²⁺, Co²⁺, Ni²⁺, Cu²⁺, VO²⁺ and Zn²⁺ (HL = 4-amino-5-mercapto-3-methyl-1, 2, 4-triazole (HAMMT). L´ = glycine or alanine have been isolated from aqueous medium. The spectral data suggested coordination of the ligand through amino nitrogen and deprotonated thiol sulphur and the amino acids through nitrogen and oxygen. Octahedral geometry around the metal ions has been proposed from electronic spectral data, magnetic properties and thermal studies of the complexes.