来自多官能团羧酸的两种意外的温度诱导超分子异构体：氢键层或螺旋管。

Li Chunyang, Tan Chunhong, Zhou Juan, Lin Yan-Yong, Wang Xiao-Feng

School of Chemistry and Chemical Engineering and Hunan Key Laboratory for the Design and Application of Actinide Complexes, University of South China, Hengyang 421001, China.

School of Mechanical Engineering, University of South China, Hengyang 421001, China.

Molecules. 2021 Nov 17;26(22):6938. doi: 10.3390/molecules26226938.

Under ambient conditions or 160 °C, two supramolecular isomers, namely [(HPTTA)(HO)(DMF)] and [(HPTTA)(HO)]··Guest ( and , HPTTA = -phenyl-'-phenyl bicyclo[2.2.2]oct-7-ene-2,3,5,6-tetracarboxdiimide tetra-carboxylic acid, Guest = DMF and HO), were obtained through the reaction of HPTTA in a mixture of HO and dimethylformamide. The single crystal structures reveal the temperature-dependent supramolecular isomerism derived from the torsion of semi-rigid of HPTTA. The prepared at room temperature is a hydrogen bond based achiral layer, while the hydrothermal synthesized is isomer resulted in an H-bond-based chiral tubes-packed supramolecular framework.

在环境条件或160℃下，通过HPTTA在水和二甲基甲酰胺的混合物中反应，得到了两种超分子异构体，即[(HPTTA)(H₂O)(DMF)]和[(HPTTA)(H₂O)]··客体（其中，HPTTA = 对苯基-对苯基双环[2.2.2]辛-7-烯-2,3,5,6-四羧酸二酰亚胺四羧酸，客体 = DMF和H₂O）。单晶结构揭示了源自HPTTA半刚性扭转的温度依赖性超分子异构现象。室温下制备的[(HPTTA)(H₂O)(DMF)]是基于氢键的非手性层，而水热合成的[(HPTTA)(H₂O)]··客体异构体则产生了基于氢键的手性管堆积超分子框架。