title: [2]Pseudorotaxanes and [2]catenanes constructed by oxacalixcrowns/viologen molecular recognition motifs.
abstract: Oxacalix[2]arene[2]pyrazine and functional polyether derived oxacalixcrown-6, -7, and -8 were synthesized, and their host-guest complexation with paraquat to form [2]pseudorotaxanes was studied. The [2]pseudorotaxanes were then successfully used in the construction of two oxacalixcrown-tetracationic cyclophane [CBPQT(4+)] based [2]catenanes.
authors.affiliation: Shanghai Advanced Research Institute, Chinese Academy of Science , Shanghai 201210, P. R. China.
authors.forename: Hua
authors.initials: H
authors.lastname: Liu
authors.forename: Xiao-Yan
authors.initials: XY
authors.lastname: Li
authors.forename: Xiao-Li
authors.initials: XL
authors.lastname: Zhao
authors.forename: Yahu A
authors.initials: YA
authors.lastname: Liu
authors.forename: Jiu-Sheng
authors.initials: JS
authors.lastname: Li
authors.forename: Biao
authors.initials: B
authors.lastname: Jiang
authors.forename: Ke
authors.initials: K
authors.lastname: Wen
mesh_terms: D043863:Catenanes / Q000138:chemical synthesis* / Q000737:chemistry; D015394:Molecular Structure; D010269:Paraquat / Q000737:chemistry; D017434:Protein Structure, Tertiary; D043862:Rotaxanes / Q000138:chemical synthesis* / Q000737:chemistry; D014755:Viologens / Q000737:chemistry*
chemical_list: D043863:Catenanes; D043862:Rotaxanes; D014755:Viologens; D010269:Paraquat