| 杂多化合物K_2HPMo_8W_4O_(40)·8H_2O的合成和结构 |
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| 引用本文： | 杨喜平,陈长章,林州斌.杂多化合物K_2HPMo_8W_4O_(40)·8H_2O的合成和结构[J].结构化学,1997(6). |
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| 作者姓名： | 杨喜平 陈长章 林州斌 |
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| 作者单位： | 中国科学院福建物质结构研究所!福州，350002，中国科学院福建物质结构研究所!福州，350002，中国科学院福建物质结构研究所!福州，350002 |
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| 摘 要： | 合成了Keggin结构的杂多化合物K2HPMo8W4O40·8H2O，并测定了其单晶结构。晶胞参数为：四方晶系，空间群92871073。该化合物是由和水分子组成。该阴离子属Keggin结构，其中的12个金属原子是Mo，W的统计分布。M-M（M=2／3Mo＋1／3W）的键长为3．54。
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| 关 键 词： | 杂多化合物 合成 结构 |
Synthesis and Structure of K_2HPMo_8W_4O_(40)·8H_2O |
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| YANG Xi-Ping, CHEN Chang-Zhang, LIN Zhou-Bin.Synthesis and Structure of K_2HPMo_8W_4O_(40)·8H_2O[J].Chinese Journal of Structural Chemistry,1997(6). |
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| Authors: | YANG Xi-Ping CHEN Chang-Zhang LIN Zhou-Bin |
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| Abstract: | Heteropoly compound K2HPMo8W4O40. 8H2O has been synthesized. It belongs to Kegginseries and crystallizes in tetragonal system, space group P4n2 (# 118) with the following crystallographic parameters: a = b = 12. 608 (2), c = 17. 928 (5 ) A, V = 2850 (2 ) and Mr =2397. 20, D.= 2. 793 g/cm3, Z = 2, A(MoKa) = 0. 71073 , F(000) = 2172, μ= 10. 134mm-1 and final R= 0.154 and R.=0. 076 for 1528 observed reflections with I≥3σ(I). The titlecompound contains heteropolyanion (Mo8W4) PO40]3- linked together by K+ ions and watermolecules. The heteropolyanion has the well-known Keggin structure, which the 12 metal atomsin the cage of the anion comprise eight Mo and four W atoms in a random distribution. The MM (M = 2/3Mo+ 1/3W) average distance in the anion is 3. 54 A |
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| Keywords: | heteropoly compound synthesis crystal structure |
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