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首页> 外文期刊>Crystal growth & design >Toward High-Yielding Supramolecular Synthesis:Directed Assembly of Ditopic Imidazoles/Benzimidazoles and Dicarboxylic Acids into Cocrystals via Selective O-H…N Hydrogen Bonds
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Toward High-Yielding Supramolecular Synthesis:Directed Assembly of Ditopic Imidazoles/Benzimidazoles and Dicarboxylic Acids into Cocrystals via Selective O-H…N Hydrogen Bonds

机译：迈向高产超分子合成：通过选择性的O-H…N氢键将对位咪唑/苯并咪唑和二羧酸定向组装为共晶体

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摘要

The supramolecular reactions between symmetric ditopic imidazoles/benzimidazoles and a variety of aliphatic and aromatic dicarboxylic acids produced molecular cocrystals 1-8 in high yields.Despite variations in molecular shape and substituent groups on the ditopic bases,each structure contained infinite 1-D molecular chains held together by robust,primary O-H…N hydrogen bonds.Secondary C-H…O interactions existed within these motifs as well as between neighboring chains,and it seems that intra-and interchain interactions are of equal structural importance based upon an analysis of the metrics displayed by each set of interactions.This study demonstrates that neutral hydrogen-bond interactions between imidazole/benzimidazoles(acting as the acceptor sites)and carboxylic acids(acting as the donor sites)provide sufficient driving force for the directed assembly of a wide range of binary cocrystals.
机译：对称的对位咪唑/苯并咪唑与多种脂族和芳族二羧酸之间的超分子反应可高收率地产生分子共晶1-8。尽管分子形状和取代基上的取代基基团存在分子形式和结构上的变化，但每个结构都包含无限的一维分子链在这些基序中以及在相邻链之间存在次要CH…O相互作用，并且基于对所显示度量的分析，似乎链内和链间相互作用具有相同的结构重要性。这项研究表明，咪唑/苯并咪唑类化合物（充当受体位点）与羧酸类化合物（充当供体位点）之间的中性氢键相互作用提供了足够的驱动力，可用于多种二元化合物的定向组装共晶体。

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