title: Rigid, Bistable Molecular Shuttles Combining T-shaped Benzimidazolium and Y-shaped Imidazolium Recognition Sites.
abstract: Two different recognition sites, one a T-shaped 2,4,7-triphenylbenzimidazolium and the other a Y-shaped 2,4,5-triphenylimidazolium are combined to construct a rigid bistable [2]rotaxane molecular shuttle on which the position of a 24-membered crown ether macrocycle can be controlled by acid-base chemistry. Molecular shuttling in both the neutral and dicationic versions were studied.
authors.affiliation: Department of Chemistry and Biochemistry, University of Windsor, Windsor, Ontario, N9B 3P4, Canada.
authors.forename: Nasim
authors.initials: N
authors.lastname: Farahani
authors.affiliation: Department of Chemistry and Biochemistry, University of Windsor, Windsor, Ontario, N9B 3P4, Canada.
authors.forename: Kelong
authors.initials: K
authors.lastname: Zhu
authors.affiliation: Department of Chemistry and Biochemistry, University of Windsor, Windsor, Ontario, N9B 3P4, Canada. loeb@uwindsor.ca.
authors.forename: Stephen J
authors.identifier: http://orcid.org/0000-0002-8454-6443
authors.initials: SJ
authors.lastname: Loeb
keywords: NMR spectroscopy; X-ray diffraction; molecular shuttle; rotaxane; supramolecular chemistry