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首页> 外文期刊>Chemistry: A European journal >Topological Study of Pseudo-Cubic Hydrogen-Bond Networks in a Binary System Composed of Primary Ammonium Carboxylates:An Analogue of an Ice Cube
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Topological Study of Pseudo-Cubic Hydrogen-Bond Networks in a Binary System Composed of Primary Ammonium Carboxylates:An Analogue of an Ice Cube

机译：一级羧酸铵组成的二元体系中伪立方氢键网络的拓扑研究：一个冰块的类似物

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摘要

Hierarchical classification and single-crystal X-ray analysis of unique pseudo-cubic hydrogen-bond networks composed of primary ammo nium carboxylates were carried out.The networks consist of four carboxyl-ate anions and four primary ammoni um cations at the corners of the cube,and twelve charge-assisted N-H…O hy drogen bonds on the sides of the cube.The configuration of the carboxylate anions generates topological diversity in the network.The results of this hier archical classification showed that pseudo-cubic hydrogen-bond networks composed of primary ammonium car boxylates can form nine topologically different networks.These pseudo-cubic networks are a subset of the networks formed by octameric water in the form of an "ice cube".The classification system can be applied to other pseudo-cubic networks in a similar way.A survey of crystal structures based on combinations of triphenylacetic acid with various alkylamines(carbon num bers up to eight)and examination of the CSD(Cambridge Structural Data base)showed eight salts that form such networks in their crystal structures.These structures are classified into six topologically different networks.Simi lar networks composed of other salts are also discussed from a topological point of view.
机译：对由伯氨基羧酸盐组成的独特的拟立方氢键网络进行了分级分类和单晶X射线分析，该网络由立方角处的四个羧酸根阴离子和四个伯氨阳离子组成，并且在立方体的侧面上有十二个电荷辅助的NH…O氢键。羧酸根阴离子的构型在网络中产生拓扑多样性。此分层分类结果表明，伪立方氢键网络由初级铵汽车boxylates可以形成九个拓扑不同的网络。这些伪立方网络是八聚水以“冰立方”形式形成的网络的子集。分类系统可以应用于其他的伪立方网络。基于三苯乙酸与各种烷基胺（碳数不超过8）的组合的晶体结构调查和CSD（剑桥S结构数据库）显示了八种在其晶体结构中形成此类网络的盐，这些结构分为六个拓扑不同的网络，并从拓扑的角度讨论了由其他盐组成的类似网络。

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