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首页> 外文期刊>Inorganic Chemistry: A Research Journal that Includes Bioinorganic, Catalytic, Organometallic, Solid-State, and Synthetic Chemistry and Reaction Dynamics >Hydrothermal synthesis, crystal structure, and solid-state NMR spectroscopy of a new indium silicate: K2In(OH)(Si4O10)
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Hydrothermal synthesis, crystal structure, and solid-state NMR spectroscopy of a new indium silicate: K2In(OH)(Si4O10)

机译：一种新型硅酸铟：K2In（OH）（Si4O10）的水热合成，晶体结构和固态NMR光谱

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摘要

A new indium(III) silicate, K2In(OH)(Si4O10), has been synthesized by a high-temperature, high-pressure hydrothermal method. It crystallizes in the monoclinic space group P2(1)/m (No. 11) with a = 11.410(1) Angstrom, b = 8.373(1) Angstrom, c = 11.611 (1) Angstrom, beta = 112.201(2)degrees, and Z = 4. The structure, which is analogous to that of K2CuSi4O10, consists of unbranched vierer 4-fold chains of corner-sharing SiO4 tetrahedra running along the b axis linked together via corner sharing by chains of trans-corner-sharing InO4(OH)2 octahedra to form a 3-D framework which delimits 8-ring and 6-ring channels to accommodate K+ cations. The presence of hydroxyl groups is confirmed by IR spectroscopy. The Si-29 MAS NMR exhibits four resonances at -88.6, -90.1, -97.4, and -98.2 ppm corresponding to four distinct crystallographic Si sites. A H-1 --> Si-29 CP/MAS NMR experiment was performed to assign the four resonances. [References: 23]
机译：通过高温高压水热法合成了一种新型的硅酸铟（III）K2In（OH）（Si4O10）。它在单斜空间群P2（1）/ m（第11号）中结晶，a = 11.410（1）埃，b = 8.373（1）埃，c = 11.611（1）埃，beta = 112.201（2）度，且Z =4。该结构类似于K2CuSi4O10，由沿b轴延伸的角共享SiO4四面体的直链4折叠维链组成，该角通过反角共享InO4链的角共享而链接在一起。 （OH）2八面体以形成3-D框架，该框架界定了8环和6环通道以容纳K +阳离子。红外光谱证实了羟基的存在。 Si-29 MAS NMR在-88.6，-90.1，-97.4和-98.2 ppm处显示四个共振，对应于四个不同的结晶Si位点。进行了H-1-> Si-29 CP / MAS NMR实验以指定四个共振。 [参考：23]

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