Polyoxometalates with separate lacuna sites†
Abstract
Bi-functionalizion of Wells–Dawson-type polyoxotungstates with exo-coordinated rare earth metal ions (M = DyIII, YIII) and phenylphosphonate induces the formation of a separate second lacunary site in the pre-functionalized [α2-P2W17O61(PhPO)2]6− precursor. The resulting [{(H2O)xM2(α2,α2′-P2W16O60)(PhPO)2}2]8− dimer clusters are stable in solution, exhibit interesting electrochemical behavior, and, for the DyIII derivative, single ion-magnet characteristics.
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