A new 2D network polyoxometalate constructed from Strandberg-type phosphomolybdates linked through binuclear Ca(II) clusters

作者：Niu Jingyang; Ma Junchuang; Zhao Junwei; Ma Pengtao; Wang Jingping^*

来源：Inorganic Chemistry Communications, 2011, 14(3): 474-477.

DOI：10.1016/j.inoche.2011.01.003

• Polyoxometalate
• Alkaline earth metal
• Strandberg
• Inorganic cluster

A polyoxometalate cluster based on Strandberg-type phosphomolybdate [K(3)Ca(H(2)O)(4)(HP(2)Mo(5)O(23))]center dot 6H(2)O (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(H(2)O)(4)(HP(2)Mo(5)O(23))](3-) (1a) based on a Strandberg-type phosphomolybdate [HP(2)Mo(5)O(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(H(2)O)](6) [P(4)Mo(6)O(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.

• 出版日期2011-3
• 单位河南大学