Crystal structure of a new small-pore zirconosilicate Na2ZrSi2O7•H2O and its relation to stoichiometrically and topologically similar compounds
Crystal structure of a new small-pore zirconosilicate Na2ZrSi2O7•H2O and its relation to stoichiometrically and topologically similar compounds
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DOI：
10.1016/j.solidstatesciences.2008.07.003
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发表时间：
2009-02-01
影响因子：
3.5
通讯作者：
Kostov-Kytin, Vladislav
中科院分区：
文献类型：
--
作者：
Nikolova, Rosica Petrova;Fujiwara, Keiko;Kostov-Kytin, Vladislav
小孔锆硅酸盐Na2ZrSi2O7中心点H2O在单斜晶系中结晶，空间群为C2/c， a = 5.4715(4)；B = 9.4111(6)；C = 13.0969(8)埃，β = 92.851(7)度。它的骨架是由ZrO6八面体和SiO4四面体组成的层，通过连接形成缩合的[SieO(7)]焦基团。钠离子和水分子被放置在两层之间的通道中。讨论了所研究相与一般化学式为A(2(3))MT(2)O(7) （A = Na，K; M = Zr,Lu,Sc; T = Si,Ge）的无水化合物的化学计量学和结构相似性。它们结构的拓扑关系是根据作为基本建筑单元的硅和锆多面体的空间组合以及它们的三维排列来解释的(C) 2008 Elsevier Masson SAS。版权所有。
The small-pore zirconosilicate Na2ZrSi2O7 center dot H2O crystallizes in monoclinic system with space group C2/c, a = 5.4715(4); b = 9.4111(6); c = 13.0969(8) angstrom, beta = 92.851(7)degrees. Its framework consists of layers built of ZrO6 octahedra and SiO4 tetrahedra and forming condensed [SieO(7)] pyrogroups by connection. The sodium ions and water molecules are placed in channels set up between the layers. The stoichiometric and structural similarities of the studied phase with anhydrous compounds having general chemical formula A(2(3))MT(2)O(7) (A = Na,K; M Zr,Lu,Sc; T = Si,Ge) are discussed. The topological relationship of their structures is interpreted in the light of spatial combination of silicon and zirconium polyhedra as basic building units into larger composite building units and their three-dimensional arrangement (C) 2008 Elsevier Masson SAS. All rights reserved.