EPR study of dithiophosphate,dithiocarbamate, and xanthate complexes of Cr(V), Mo(V), and W(V)

Liquid and frozen solutions of diethyl dithiophosphate, diethyl dithiocarbamate, and butyl xanthate complexes of Cr(V), Mo(V) and W(V) were studied by the EPR method in the temperature range from 293–77dg K. The spin-Hamiltonian parameters were determined. Conclusions were drawn about the structure of these complexes and about the bond character within the complexes. A multiplicity of the hyperfine splitting constants from Cr⁵³, Mo^95,97, and W¹⁸³ to the constant of additional hyperfine splitting from the p³¹ isotope is observed in diethyl phosphate complexes.