首页> 中文期刊>化学研究 >同多钨酸Na10H2W12O42·20H2O·2HCOOH的r制备、晶体结构及其电化学性质

同多钨酸Na10H2W12O42·20H2O·2HCOOH的r制备、晶体结构及其电化学性质

     

摘要

A pure inorganic isopolytungstate Na10[H2W12O42]·20H2O·2HCOOH (1) has been syn-thesized in aqueous solution and its structure is characterized by IR spectrum and single-crystal X-ray diffraction. The X-ray diffraction reveals that 1 belongs to the triclinic space group P-1 and consists of one [ H2 W12 O42 ] 10- polyanion, ten Na+ cations, twenty lattice water molecules and two dissociative HCOOH molecules. The [ H2 W12 O42 ] 10-polyanion in 1 contains four tri-tungsten-oxo clusters linked to each other via corner-sharing mode. It is worth noting that the four tri-tungsten-oxo clusters can be di-vided into two pairs:two of them are located in the equatorial position of 1 with the formula{W3 O14}, and the other are positioned at polar position, which can be formulated as{W3 O13}. Moreover, the e-lectrochemistry properties of 1 have been investigated at room temperature.%在水溶液中合成了一种纯无机的同多钨酸盐Na10[H2W12O42]·20H2O·2HCOOH(1),并通过红外光谱和X射线单晶衍射对其结构进行了表征.X射线单晶衍射表明1属于三斜晶系P-1空间群,由1个[H2 W12 O42]10-聚阴离子、10个Na+离子、20个游离的水分子和2个游离的甲酸分子组成.1中的[H2 W12 O42]10-聚阴离子由4个以共角方式相连的三金属钨氧簇构成.值得注意的是这4个三金属钨氧簇可以被分成两组:其中2个位于赤道位置,可以描述为{W3 O14};另外2个三金属钨氧簇则处于极位,可以描述为{W3 O13}.此外,我们在室温下对其电化学行为进行了研究.

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