title: Synthesis of a symmetric cylindrical bis(crown ether) host and its complexation with paraquat.
abstract: The first cylindrical host for paraquat derivatives was prepared and characterized by X-ray analysis. Its complex with paraquat has 1:2 stoichiometry. The complexation is statistical and strong as shown by proton NMR characterization, electrospray mass spectrometry, and X-ray analysis.
authors.affiliation: Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061-0212, USA.
authors.forename: Feihe
authors.initials: F
authors.lastname: Huang
authors.forename: Lev N
authors.initials: LN
authors.lastname: Zakharov
authors.forename: Arnold L
authors.initials: AL
authors.lastname: Rheingold
authors.forename: Mehdi
authors.initials: M
authors.lastname: Ashraf-Khorassani
authors.forename: Harry W
authors.initials: HW
authors.lastname: Gibson