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首页> 外文期刊>Inorganic Chemistry Communications >A new 2D network polyoxometalate constructed from Strandberg-type phosphomolybdates linked through binuclear Ca(II) clusters
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A new 2D network polyoxometalate constructed from Strandberg-type phosphomolybdates linked through binuclear Ca(II) clusters

机译:由通过双核Ca(II)簇连接的Strandberg型磷钼酸盐构建的新的2D网络多金属氧酸盐

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摘要

A polyoxometalate cluster based on Strandberg-type phosphomolybdate[K3Ca(H2O)4(HP2Mo5O_(23))]· 6H2O(1) has been synthesized by the conventional solution method and characterized by IR spectrum, UV spectra, electrochemical measurements, thermogravimetric analysis, ICP techniques and X-ray crystallography. X-ray single crystal diffraction analysis shows that 1 contains a novel polyoxoanion [Ca(H2O)4(HP2Mo5O_(23))]~(3-) (1a) based on a Strandberg-type phosphomolybdate [HP2Mo5O_(23)]~(5-). Notably, it represents the first 2D polymolybdate inorganic structure constructed from Strandberg-type phosphomolybdates linked through alkaline earth metal clusters. Interestingly, the phenomenon that la and heteropolyoxoanion {[Ca(H2O)]6 [P4Mo6O_(34)]2}~(12-) can be mutually transformed when the pH of the solution is adjusted to ca. 4.50 in aqueous solution has been observed.
机译:通过常规溶液法合成了基于Strandberg型磷钼酸盐[K3Ca(H2O)4(HP2Mo5O_(23))·6H2O(1)的多金属氧酸盐簇,并通过红外光谱,紫外光谱,电化学测量,热重分析, ICP技术和X射线晶体学。 X射线单晶衍射分析表明1包含一种基于Strandberg型磷钼酸盐[HP2Mo5O_(23)]〜(的新型聚氧阴离子[Ca(H2O)4(HP2Mo5O_(23))]〜(3-)(1a) 5-)。值得注意的是,它代表了第一个2D聚钼酸盐无机结构,该结构由通过碱土金属簇连接的Strandberg型磷钼酸盐构成。有趣的是,当将溶液的pH调节至约3时,1a和杂多氧杂阴离子{[Ca(H2O)] 6 [P4Mo6O_(34)] 2}〜(12-)可以相互转化的现象。在水溶液中观察到4.50。

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