title: Observation of face-to-face host-guest associated states prior to threading of dialkylammonium ions into the DB24C8-like openings of a molecular cage.
abstract: The threading of bis(dialkylammonium) ions through the DB24C8-like openings of a molecular cage proceeds through a stepwise mechanism: formation of a face-to-face complex between the NH2(+) centers and the crown ether, significant dissociation of this complex, and passage of the terminus of the cation through the macrocycle.
authors.affiliation: Department of Chemistry, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, Taiwan, ROC.
authors.forename: Chun-Ju
authors.initials: CJ
authors.lastname: Chuang
authors.forename: Ming-Liang
authors.initials: ML
authors.lastname: Yen
authors.forename: Chien-Chen
authors.initials: CC
authors.lastname: Lai
authors.forename: Yi-Hung
authors.initials: YH
authors.lastname: Liu
authors.forename: Shie-Ming
authors.initials: SM
authors.lastname: Peng
authors.forename: Sheng-Hsien
authors.initials: SH
authors.lastname: Chiu
mesh_terms: D043844:Crown Ethers / Q000737:chemistry*; D018360:Crystallography, X-Ray; D007477:Ions / Q000737:chemistry; D007700:Kinetics; D008968:Molecular Conformation; D000644:Quaternary Ammonium Compounds / Q000737:chemistry*
chemical_list: D043844:Crown Ethers; D007477:Ions; D000644:Quaternary Ammonium Compounds