Studies on Some Complexes of Zirconium (IV) with Substituted Triazoles having Thioamide Group

Abstract

Some air stable zirconium (IV) complexes with physiologically active substituted triazoles such 3-(4-pyridyl)-4-phenyl-1,2,4-triazole-5-thione (PyPtTH), 4-amino-3-methyl-5-mercapto-s-triazole (AmMTH) and 1,2,4- triazole-3(5)-thiol (tTH) containing thioamide group have been prepared and characterised on the basis of various physico-chemical methods. All complexes have been isolated in ethanolic media and found to be diamagnetic in natures. In some cases the deprotonation of thiol tautomeric form of ligand occurs at pH = 8. The systematic shifts of all four thiomide bands are studied thoroughly and bonding through thione as well as thiol sulphur has been assigned. An octahedral structure for all complexes have been tentatively assigned.