N-(4-Phenylbutyl)azacalix[3.1.1.1]arene: Self-Inclusion of the Side Chain through CH···π Interactions
作者:Hiroyuki Takemura、Yuka Yonebayashi、Takeshi Nakagaki、Teruo Shinmyozu
DOI:10.1002/ejoc.201001460
日期:2011.4
exhibit both inter- and intramolecular CH···π interactions. In the crystalline state, the 4-phenybutyl group is included in the molecular cavity, allowing interactions between the methylene H atoms and the aromatic rings of the azacalix skeleton. In addition, similar “edge-to-face” interactions occur between the terminal phenyl ring and that of an adjacent molecule, thus forming a polymeric, supramolecular
氮杂杯芳烃1具有较长的链取代基,可以表现出分子间和分子内CH…π相互作用。在结晶状态下,4-苯丁基包含在分子腔中,允许亚甲基H原子与氮杂杯骨架的芳环之间发生相互作用。此外,末端苯环和相邻分子的苯环之间会发生类似的“边对面”相互作用,从而形成氮杂杯芳烃分子的聚合超分子阵列。在溶液中,4-苯基丁基臂采用两种取向,一种包含在杯腔中,一种不包含,产生可描述为外型和内型构象异构体的异构体。