Porous structures constructed from [SiMo12O40] and [SiW12O40] Keggin units |
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| Authors: | Shuiying Gao Rong Cao Wenhua Bi Xing Li Zhengzhong Lin |
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| Affiliation: | State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, The Chinese Academy of Sciences, Graduate School of the Chinese Academy of Sciences, Yangqiao West Road 155, Fuzhou 350002, PR China |
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| Abstract: | Three compounds, K2(H2O)4H2SiMo12O40 · 7H2O (1), K2Na2(H2O)4SiW12O40 · 4H2O (2), and Na4(H2O)8SiMo12O40 · 6H2O (3) have been synthesized and structurally characterized by single-crystal X-ray analysis, IR, and thermogravimetry. Compounds 1 and 2 both show the high symmetry trigonal space group P3221 and a novel 3D network structure. The Keggin anions SiM12O40]4?(M = Mo, W) are linked by potassium or sodium cations to generate hexagon-shaped channels along the c-axis, in which water molecules are accommodated. Compound 3 is tetragonal, space group P4/mnc constructed from SiMo12O40]4? anions and Na ions. |
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| Keywords: | Keggin Polyoxometalate (POM) Crystal structure Channel |
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