New Troponoid Liquid Crystalline Compounds, 5-Alkoxy-2-(4-alkoxybenzoylamino)tropones
作者:Akira Mori、Ken Hirayama、Nobuo Kato、Hitoshi Takeshita、Seiji Ujiie
DOI:10.1246/cl.1997.509
日期:1997.6
The X-ray crystallographic structural analysis of 5-butoxy-2-(4-methoxybenzoylamino)tropone, a liquid crystalline compound, revealed to form the head-to-tail dimer, in which a CH-π interaction between the benzoyl π-system and the β-hydrogen of the 5-butoxy group on the tropone ring of the neighboring molecule as well as intermolecular π-π stacking interactions with the two tropone systems. On the other hand, 2-(4-alkoxybenzoylamino)-5-methoxytropone lacking the β-hydrogen and the corresponding benzenoid, N-(4-alkoxyphenyl)-4-alkoxybenzamide were non-mesogenic.
对液晶化合物 5-丁氧基-2-(4-甲氧基苯甲酰氨基)托品酮的 X 射线晶体学结构分析表明,该化合物形成头尾二聚体,其中苯甲酰基 π-系统与邻近分子托品酮环上 5-丁氧基基团的 β-氢之间存在 CH-π 相互作用,两个托品酮系统之间还存在分子间 π-π 堆积相互作用。另一方面,缺少 β-氢的 2-(4-烷氧基苯甲酰氨基)-5-甲氧基托品和相应的苯类化合物 N-(4-烷氧基苯基)-4-烷氧基苯甲酰胺则不产生介导作用。