A new alpha -Keggin type polyoxometalate coordinated to four silver complex moieties: {PW9V3O40[Ag(2,2-bipy)]2[Ag2(2,2bipy)3]2}

A new polyoxometalate derivative {PW9V3O40[Ag(2,2-bipy)]2[Ag2(2,2-bipy)3]2}1 has been hydrothermally synthesized and structurally characterized by the single crystal X-ray diffraction. X-Ray analysis showed that both [Ag(2,2-bipy)]+ and [Ag2(2,2-bipy)3]2+ units are supported on the -Keggin polyoxoanion [PW9V3O40]6–via the surface bridging oxygen atoms. 1 represents the first -Keggin type polyoxoanion coordinated with four transition metal complex moieties, which further acts as a neutral molecular units for the construction of an interesting threedimensional supramolecular framework.