title: Unique conformation and packing structure of p-sulfonatocalix[5]arene induced by 1,2-bis(pyridinium)ethane compounds.
abstract: In the presence of 1,2-bis(4,4'-dipyridinium)ethane, p-sulfonatocalix[5]arene (C5AS) adopts an unseen partial-cone conformation to form back-to-back dimers, whereas C5AS crystallizes in face-to-face dimers to form a wavy layer, rather than the expected bilayer, arrangement upon complexation with 1,2-bis(pyridinium)ethane.
authors.affiliation: Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, PR China.
authors.forename: Dong-Sheng
authors.initials: DS
authors.lastname: Guo
authors.forename: Heng-Yi
authors.initials: HY
authors.lastname: Zhang
authors.forename: Chun-Ju
authors.initials: CJ
authors.lastname: Li
authors.forename: Yu
authors.initials: Y
authors.lastname: Liu