Abstract
Reactions of non-lacunary Keggin ([PW12O40]3−) and Dawson ([α-P2W18O62]6−) polyoxometalates with rhodium (II) acetate have been studied. In the first case reaction yields the layered coordination polymer Li3[(Rh2(CH3COO)4)2(PW12O40)]·12.5 H2O (1), where polyoxoanions are coordinated via oxygen atoms to the {Rh2}4+ core. In the case of [α-P2W18O62]6− dirhodium clusters do not coordinate the polyoxoanion directly; however, they form K7[P2W18O62][Rh2(CH3COO)4X]·nH2O, where X=Cl, n=11.37 (2); Br, n=11.1 (3), which contain polymeric chain polyanions catena-[Rh2(CH3COO)4X]nn− (X=Cl, Br). Coordination polymer 1 is active in total oxidation of hydrogen and olefin at relatively low temperatures.
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