Thermal studies on molybdenum(IV) dialkyl dithiocarbamate adducts with pyridine

Abstract

Spectroscopic, magnetic and analytical studies on the adducts of several molybdenum(IV) dialkyl dithiocarbamate complexes with pyridine have been previously reported. The formula which most closely fits the analyses is Mo 2(dtc) 4·Py 2 (where dtc = di-ethyl. di-n-propyl, di-isopropyl, di-isobutyl and N-methyl-cyclohexyl dithiocarbamates). The study of these adducts using DSC and TG techniques allowed us to determine the degree of thermal stability of these compounds. The DSC curves corresponding to the decomposition of the adducts showed only a single endothermic peak. The mass loss accompanying the endothermic transition corresponded to the loss of two molecules of pyridine with a residue of Mo 2(dtc) 4. From the DSC curves, activation energies have been calculated.