Reactions in mixed non-aqueous systems containing sulphur dioxide. Part 6. The reaction of metal oxides with dimethyl sulphoxide–sulphur dioxide

Abstract

The metal oxides MgO, V₂O₅, CrO₃, MnO₂, CoO, CuO, Cu₂O, and ZnO react with dimethyl sulphoxide–sulphur dioxide to form the metal disulphates M_x(S₂O₇)_y·zdmso. The oxides SnO₂, PbO₂, La₂O₃, and Ag₂O give products of indeterminate composition, and TiO₂, Cr₂O₃, Fe₂O₃, Co₃O₄, NiO, MoO₃, and Al₂O₃ do not react with the mixed-solvent system. The mechanism of conversion of oxide into disulphate is discussed.