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首页> 外文期刊>Crystallography reports >Single-Crystal Synthesis and Structures of Rb-Boroleucite Rb(BSi2)O-6 and Boropollucite Cs(BSi2)O-6 at 293 and 120 K
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Single-Crystal Synthesis and Structures of Rb-Boroleucite Rb(BSi2)O-6 and Boropollucite Cs(BSi2)O-6 at 293 and 120 K

机译：rb-boruce rb（bsi2）o-6和硼博氨酸cs（bsi2）o-6的单晶合成和结构在293和120k

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摘要

The structures of Rb-boroleucite Rb-1.0(B0.333Si0.667)(3)O-6 and boropollucite Cs-0.87(B0.290Si0.710)(3)O-6 were studied using single crystals, which were prepared under hydrothermal conditions. In the zeolite-like framework structures, Rb and Cs atoms are located in large window cavities formed by four, six, and eight tetrahedra. The B and Si atom randomly occupy general positions. Cubic space groups of both phases (acentric sp. gr. I3d for Rb and centrosymmetric holohedral sp. gr. Iad for Cs) remain unchanged at room temperature and down to 120 K. Rubidium boroleucite has a stoichiometric formula. Boropollucite is characterized by a deviation from the stoichiometric composition, which is manifested in the predominance of Si atoms in tetrahedra and the defect occupation of the Cs site. The size of alkali metal cations plays a crucial role in the existence of a particular modification, which is consistent with earlier results.
机译：使用单晶体研究RB-Boraularcite RB-1.0（B0.333SI0.667）（3）O-6和硼博氨酸CS-0.87（B0.290SI0.710）（3）O-6的结构，所述单晶体 水热条件。 在沸石样框架结构中，Rb和Cs原子位于由四个，六个和八个四面体形成的大型窗腔中。 B和Si原子随机占据一般位置。 两个阶段的立方体空间组（锐利sp.gr。rb。用于Rb和Centroosymmetric holohedral sp.r.cr。r。cs）在室温下保持不变，下降至120k。铷硼酸铷具有化学计量的配方。 硼罗普利术的特征在于偏离化学计量组合物，其表现在四面体中Si原子的优势和CS位点的缺陷占用。 碱金属阳离子的尺寸在存在特定修饰的情况下起着至关重要的作用，这与前面的结果一致。

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