SYNTHESIS, SPECTROSCOPIC, THERMAL AND BIOLOGICAL STUDIES ON MANGANESE(III), IRON(III) AND COBALT(III) COMPLEXES WITH BIS(MERCAPTO AZOLES)

Complexes of bis(mercapto azoles) i.e. bis(mercapto triazoles), bis(mercapto thiadiazoles) and bis(mercapto oxadiazoles) (LH₂) with manganese(III), iron(III) and cobalt(III) have been prepared in methanol in the presence of sodium hydroxide and binuclear products of the type Na[M(L)₂(H₂O)₂] have been isolated. Tentative structural conclusions are drawn for these complexes based upon elemental analyses, electrical conductance, magnetic moment and spectral (electronic, infrared and ¹H NMR) data. The thermal stability and mode of decomposition for the complexes have been studied by TG, DTA and DSC techniques. The antifungal, antiviral and antibacterial activities of the ligands and their corresponding complexes were also investigated.