POTENTIALITY OF HETEROPOLYTUNGSTATES AS CATALYSTS IN THE SELECTIVE OXIDATION OF DIPHENYLSULFIDE TO DIPHENYLSULFOXIDE

M G EGUSQUIZA; K BEN TALLEV; M MUÑOZ; CABELLO C; I. L. BOTTO

Journal of the Argentine Chemical Society

ASOCIACIÓN QUÝMICA ARGENTINA

Lugar: Capital Federal; Año: 2009 vol. 97 p. 166 - 173

0365-0375

The activity of complex heteropolytungstates of general formula B-α- [MII4(H2O)2(PW9O34)2]10- (1) with M= Co(II), Zn(II), Mn(II) and Cu(II) (PWM) was investigated in the selective oxidation reaction of diphenylsulfide to diphenylsulfoxide in presence of tert-butylhydroperoxide as oxidant. The characterization of phases was performed by X Ray Powder Diffraction, XRD. All phases resulted isomorphous although PWCu is obtained as a mixture of two structural isomers [Cu2(H2O)2PW10O38]7-. II4(H2O)2(PW9O34)2]10- (1) with M= Co(II), Zn(II), Mn(II) and Cu(II) (PWM) was investigated in the selective oxidation reaction of diphenylsulfide to diphenylsulfoxide in presence of tert-butylhydroperoxide as oxidant. The characterization of phases was performed by X Ray Powder Diffraction, XRD. All phases resulted isomorphous although PWCu is obtained as a mixture of two structural isomers [Cu2(H2O)2PW10O38]7-.