The Cr3+-substituted Vanadophosphate (M13PV12Cr2O42*nH2O) with Bicapped-Keggin structure was synthesized by hydrothermal synthesis and characterized by elementary analysis、IR、X-ray diffraction and UV-Vis spectra.%用水热合成方法首次合成了一种用低价过渡金属元素Cr(Ⅲ)取代的高钒杂多化合物M13PV12Cr2O42*21H2O(M=K或H)，通过元素分析、UV、IR以及XRD谱等对其进行了表征，认为其阴离子具有双帽Keggin结构。
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