title: per-Hydroxylated pillar[6]arene: synthesis, X-ray crystal structure, and host-guest complexation.
abstract: A per-hydroxylated pillar[6]arene was prepared. Single-crystal X-ray analysis demonstrated that its molecules are arranged in an up-to-down manner to form infinite channels in the solid state. Its host-guest complexation with a series of bispyridinium salts in solution was further investigated. It was found that the per-hydroxylated pillar[6]arene could form a 1:1 complex with paraquat in acetone with an association constant of 2.2 × 10(2) M(-1). This complex is a [2]pseudorotaxane as shown by its crystal structure, which is the first pillar[6]arene-based host-guest complex crystal structure.
authors.affiliation: Department of Chemistry, Zhejiang University, Hangzhou 310027, PR China.
authors.forename: Yingjie
authors.initials: Y
authors.lastname: Ma
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Chi
authors.forename: Xuzhou
authors.initials: X
authors.lastname: Yan
authors.forename: Jiyong
authors.initials: J
authors.lastname: Liu
authors.forename: Yong
authors.initials: Y
authors.lastname: Yao
authors.forename: Weixiang
authors.initials: W
authors.lastname: Chen
authors.forename: Feihe
authors.initials: F
authors.lastname: Huang
authors.forename: Jun-Li
authors.initials: JL
authors.lastname: Hou