title: Efficient syntheses of pillar[6]arene-based hetero[4]rotaxanes using a cooperative capture strategy.
abstract: While a single pillar[6]arene ring, nestling between two cucurbit[6]uril rings in a series of three hetero[4]rotaxanes, is conformationally mobile in solution, it adopts the energetically most favourable conformation with local C3V symmetry in the solid state.
authors.affiliation: Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA. stoddart@northwestern.edu.
authors.forename: Xisen
authors.initials: X
authors.lastname: Hou
authors.forename: Chenfeng
authors.initials: C
authors.lastname: Ke
authors.forename: Chuyang
authors.initials: C
authors.lastname: Cheng
authors.forename: Nan
authors.initials: N
authors.lastname: Song
authors.forename: Anthea K
authors.initials: AK
authors.lastname: Blackburn
authors.forename: Amy A
authors.initials: AA
authors.lastname: Sarjeant
authors.forename: Youssry Y
authors.initials: YY
authors.lastname: Botros
authors.forename: Ying-Wei
authors.initials: YW
authors.lastname: Yang
authors.forename: J Fraser
authors.initials: JF
authors.lastname: Stoddart
mesh_terms: D015394:Molecular Structure; D011726:Pyridinium Compounds / Q000737:chemistry*; D000644:Quaternary Ammonium Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D043862:Rotaxanes / Q000737:chemistry*
chemical_list: D011726:Pyridinium Compounds; D000644:Quaternary Ammonium Compounds; D043862:Rotaxanes; C581440:pillar(6)arene