Synthesis and Characterization of Some Oxo-cations Complexes with Heterocyclic Thioamide Ligand

Abstract

Mono nuclear oxo-cation complexes with 1,2,4-triazole-3(s) thione have been prepared and characterized on the basis of elemental analysis, molar conductance, spectral (IR, electronic) studies and magnetic susceptibility measurements. The ligand behaves as mononegative bidentate ligand having bonding through deprotonated imino nitrogen and thiocarbonyl sulphur. IR spectra suggest existence of cis-dioxo structure of VO₂⁺, MoO₂²⁺ and WO₂²⁺ species, which forces the ligand to coordinate in a non-planar fashion and allow better O_(pπ) - M_(dπ) bonding than linear arrangement would allow in octahedral geometry.