New Organotin and Organosilicon Derivatives of P/As/Sb/Bi-Polyoxotungstates

Abstract

Mono- or bis(organoelement)-substituted Keggin molybdotungstophosphates K₄[C₆H₅SnPMo₂W₉O39]-14H₂O, K4[C4H₉SnPMo₂W₉O₃₉]-14H₂O, K3[(C₂H₃Si)₂ PMo₂W₉O₄₀]17H₂O, tris(organoelement)-substituted Keggin tungstophosphates and tungstoarsenates Cs₁₂[(C₄H₉SnOH)₃(PW₉O₃₄)₂]. 19H₂O, K₁₁H[(C₂H₃SiOH)₃(PW₉O₃₄)₂] 14H₂O, Cs₁₂f(C4H₉SnOH)₃(AsW₉O₃₃)₂]-43H₂O, Cs₁₂[(C₂H₃SiOH)₃(AsW₉O₃₃)₂] 14H₂O, and mono- or bis(organoelement)-substituted pseudo-Keggin tungstoantimonates and tungstobismutates K₄[(C₄H₉SnOH)SbW₁₁O₃₈H]-12H₂O, K₂[(C₂H, Si)₂SbW₁₁O₃₉H].16H₂O, K₄[(C₄H₉SnOH)BiW₁₁O₃₈H]-10H₂O) and K₂[(C₂H₃Si)₂BiW₁₁O₃₉H]-14H₂O, have been prepared by reaction of organoelement trichlorides with [PMo₂W₉O₃₉]^7-, [PW₉O₃₄]^9-, [HAsW₉O₃₃]^8-, [HSbW₁₁O₃₈]^6- and [HBiW₁₁O₃₈]^6-, respectively. The products were characterized by elemental and thermal analyses, UV, IR and ¹H, ¹³C, ³¹P NMR spectroscopy The results of these studies suggest that the compounds obtained from Keggin trilacunary anions are 2:3 sandwich-type complexes, and those obtained from monolacunary Keggin anions are 1:1 open-type complexes.