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首页> 外文期刊>Crystallography reports >Assembly models for zeolite crystal structures according to the data of topological analysis by the tiling method
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Assembly models for zeolite crystal structures according to the data of topological analysis by the tiling method

机译:根据平铺方法进行拓扑分析的数据得出的沸石晶体结构的装配模型

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Cluster analysis of 194 tetrahedral T structures of zeolites has been performed by the tiling method using the TOPOS program package. An algorithm of the complete expansion of T structures in tiles (comple- mentarily bound polyhedral clusters, which are responsible for the normal (face-to-face) partition of crystal space) and an algorithm for selecting nonintersecting tiles were used. Primary tiles, which number no more than two for any zeolite studied and have packing that completely determines the topology of the entire zeo- lite structure, have been determined for 41 zeolites. It is established that 24 zeolites are characterized by a sin- gle assembly version, 15 have two alternative versions, and IWR and TSC zeolites are characterized by 3 and 4 assembly versions. Isolated zeolites contain 2-11 topologically different Tn tiles, where n is the number of tetrahedral T sites per tile; n = 4-168 and the diameter is 6-35 A. The most numerous group of zeolites is characterized by n values of 4-18. This group contains no tiles with the odd values n = 7-17 and even value n = 6. The other group includes zeolites with large n values: 24, 30, 32, 36, 42, 48, 64, 72, 96, and 168.
机译:使用TOPOS程序包通过分块方法对194个沸石的四面体T结构进行了聚类分析。使用了一种在瓷砖(完全绑定的多面体簇,负责晶体空间的正常(面对面)划分)中完全扩展T结构的算法,以及一种选择非相交瓷砖的算法。对于41种沸石,已经确定了一种初级砖,该砖的数量不超过研究的任何一种沸石,并且具有完全确定整个沸石结构拓扑的堆积。可以确定的是,24种分子筛的特征是单一的,15种分子筛有两种,而IWR和TSC分子筛的特征是3种和4种。分离的沸石包含2-11个拓扑不同的Tn瓷砖,其中n是每个瓷砖的四面体T位点的数量; n = 4-168,直径为6-35A。最多的一组沸石的n值为4-18。该组不包含奇数值n = 7-17和偶数n = 6的瓷砖。另一组包含n值较大的沸石:24、30、32、36、42、48、64、72、96和168。

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