Grafting transition metal-organophosphonate fragments onto heteropolyoxomolybdate: activity in photocatalysis

摘要

A novel organophosphonate-functionalized heteropolyoxomolybdate incorporated nickel cluster, CsNa9[H-2{Ni3O2(H2O)(6)}(PMo6O21)(2){Ni(OOCCH2NHCH2PO3)(2)}(3)]center dot 21H(2)O (1), has been synthesized, which represents the first member of the family of oxomolybdenum organophosphonate containing hexanuclear Ni(II) in a polyanion framework. The polyanion comprises a unique ladder-type {Ni3O10(H2O)(6)} cluster and three {Ni(OOCCH2NHCH2PO3)(2)} bridgings, which are capped on either end by a {PMo6O28} group. Photocatalytic experiments indicate that 1 exhibits catalytic activity for the photodegradation of RhB solution. Furthermore, magnetic studies indicate that 1 displays antiferromagnetic interactions.