Symmetry and structural relationships among ABW-type materials
Symmetry and structural relationships among ABW-type materials
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DOI：
10.1524/zkri.216.9.489.20350
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发表时间：
2001-09
期刊：
影响因子：
--
通讯作者：
V. Kahlenberg;R. Fischer;W. H. Baur
中科院分区：
文献类型：
--
作者：
V. Kahlenberg;R. Fischer;W. H. Baur
摘要描述了沸石型ABW化合物之间的对称关系，从空间群Imam的最高可能拓扑对称到8个可能的子群。这个化合物家族，也被称为icmm型化合物，涵盖了广泛的化学成分。基于旋转和有序过程描述了导致对称性降低的畸变模式。给出了最近描述的具有abw型框架的单斜P1121/n结构的原子位关系及其从aristotype演变的过程。
Abstract The symmetry relationships among zeolite-type ABW compounds are described in terms of the reductions of symmetry from the highest possible topological symmetry in space group Imam to eight possible subgroups. This family of compounds, also known as Icmm-type compounds, covers a wide range of chemical compositions. The distortion modes inducing the lowering of symmetry are described based on rotation and ordering processes. Atomic site relationships with their evolution from the aristotype are given for the recently described monoclinic P1121/n structures with an ABW-type framework.