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首页> 外文期刊>Acta Crystallographica, Section B. Structural Science >Isostructurality in one and two dimensions: isostructurality of polymorphs
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Isostructurality in one and two dimensions: isostructurality of polymorphs

机译：一维和二维的同构性：多晶型物的同构性

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摘要

A set of polymorphic crystal structures was retrieved from the Cambridge Structural Database in order to estimate the frequency of isostructurality among polymorphs. Altogether, 50 structures, the polymorphs of 22 compounds, were investigated. It was found that one-, two- or three-dimensional isostructurality is exhibited by approximately half of the compounds analyzed. Among the isostructural polymorphs, the frequency of one-, two- and three-dimensional isostructurality is similar. From the examples, it appears that three-dimensional isostructurality is connected to the gradual ordering of crystal structures, while one- and two-dimensional isostructurality can often be related to specific packing interactions. The possibility of many similar interactions seems to decrease the probability of the occurrence of isostructural polymorphs. Conformational polymorphs do not exhibit isostructurality.
机译：从剑桥结构数据库中检索了一组多态晶体结构，以估计多态之间的同构性频率。共研究了50种结构，即22种化合物的多晶型物。发现大约一半的所分析化合物表现出一维，二维或三维同构性。在同构多晶型物中，一维，二维和三维同构性的频率相似。从示例中可以看出，三维同构性与晶体结构的逐步排序有关，而一维和二维同构性通常可以与特定的堆积相互作用相关。许多相似相互作用的可能性似乎降低了同构多晶型物出现的可能性。构象多晶型物不表现出同构性。

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