Synthesis And Characterization Of Rare-earth Complexes Based On Polyoxometalates

Polyoxometalates (POMs), know as a class of traditional functional molecular units, have been attracting special research interest due to their significant applications in given fields and distinctive topological structures. Recently, introduction the rare-earth cations into POMs, it is considered as either rational or promising designing strategies in isolation of new functional materials. Although, rare-earth-polyoxometalates have been documented in literatures, systematic research on the relation of structures and properties is still absent. We are trying to get insight into such a research goal to achieve the successful exploration of the rules, and, if possible, to synthesize rare-earth-polyoxometalates based on the rules to further demonstration. Through normal technique, one novel 1D chain-like complex:[Dy0.5(H2O)1.25]H0.5[Dy2(GeW11O39)(DMSO)(H2O)9]·6.5H2O 1has been synthesized. Structure of complex 1 has been determined by single crystal X-ray diffraction, and the property of 1 has been discussed such as IR, UV and CV et al. The successful syntheses of this complex which represent a model of how Keggin-type polyanion [GeW11O39]8- react with rare-earth cation, and further introduction of organic molecular. It provided the reactive information of the polyoxoanions with the rare-earth, at the same time, enriched the complexes of rare-earth complexes based on polyoxometalates.