Studies on the Synthesis and Characterization of Sandwich Type Polyoxometalate (Bu4N)7H3[Ru2O (H2O)2 (γ-SiW10O36)2]

A di-ruthenium cluster substituted polyoxometalates (Bu4N)7H3[Ru2O(H2O) 2(γ-SiWi10O36)2] was synthesized by using γ-[SiW10O36]8- and K4Ru2OCl10 as precursors. Several methods (including IR, UV, EPR, magnetic moment measurement, CV and 183W NMR) were used to determine the purity and structure of the title compound. IR, UV data confirmed the purity, the maintenance of the γ-type structure and the substitution of the di-ruthenium cluster; the data of UV, EPR and magnetic moment measurement ensured that the linear structure of K4Ru2OCl10 is still kept; CV and 183W NMR data determined the C2h symmetry sandwich structure of the title compound.