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首页> 外文期刊>Crystal growth & design >Carboxylic acid and phenolic hydroxyl interactions in the crystal structures of co-crystals/clathrates of trimesic acid and pyromellitic acid with phenolic derivatives
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Carboxylic acid and phenolic hydroxyl interactions in the crystal structures of co-crystals/clathrates of trimesic acid and pyromellitic acid with phenolic derivatives

机译：偏苯三酸和均苯四酸与酚衍生物的共晶体/包合物的晶体结构中的羧酸和酚羟基相互作用

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摘要

Crystallization of trimesic acid (H_3TMA) in the presence of phenol resulted in the single crystals of [(H_3TMA)?(phenol)], 1. The crystal structure consists of two-dimensional hydrogen bonding layers with herringbone geometry via an acid-phenol synthon in which the O-H group of phenol inserts into a conventional acid dimer in an unsymmetrical fashion. The consistency and robustness of this observed phenomenon were confirmed by reproducing a similar structure by treating H_3TMA with m-cresol [(H_3TMA)?(m-cresol)], 2. On the other hand, similar reactions with H_4PMA resulted in unprecedented clathrates of H_4PMA containing a square grid network via a conventional acid synthon. The square grids have dimensions of 8.3 × 8.3 ? and clathrate phenolic guests. Our studies indicate that H_4PMA can act as a host only for the phenolic derivatives such as phenol [(H_4PMA)?(phenol)], 3, o-cresol [(H_4PMA)_2?(o-cresol)], 4, p-cresol [(H _4PMA)_2?(p-cresol)], 5, and p-chlorophenol [(H _4PMA)_2?(p-chlorophenol)], 6.
机译：在苯酚存在下，偏苯三酸（H_3TMA）结晶生成[（H_3TMA）2（苯酚）]，1的单晶。该晶体结构由二维氢键合层组成，该键合层通过酸-酚合成子形成人字形。其中酚的OH基团以不对称方式插入常规的酸二聚体中。通过用间甲酚[（H_3TMA）2（间甲酚）]处理H_3TMA，可以再现相似的结构，从而证实了这一现象的一致性和鲁棒性。另一方面，与H_4PMA的相似反应导致了前所未有的包合物H_4PMA通过常规酸合成子包含方形网格网络。方格的尺寸为8.3×8.3？和包容酚醛的客人。我们的研究表明，H_4PMA只能充当酚类衍生物的主体，例如酚[（H_4PMA）？（酚）]，3，邻甲酚[（H_4PMA）_2？（邻甲酚）]，4，对-甲酚甲酚[（H _4PMA）_2？（对甲酚）]，5和对氯苯酚[（H _4PMA）_2？（对氯苯酚）]，6。

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