title: Supramolecular fixation of NO2 with calix[4]arenes.
abstract: Reaction of NO2 with simple calix[4]arenes in chloroform in the presence of a Lewis acid rapidly results in intense coloration caused by the encapsulation of nitrosonium cation.
authors.affiliation: Department of Chemistry & Biochemistry, University of Texas at Arlington, Arlington, TX 76019-0065, USA.
authors.forename: Grigory V
authors.initials: GV
authors.lastname: Zyryanov
authors.forename: Yanlong
authors.initials: Y
authors.lastname: Kang
authors.forename: Stephen P
authors.initials: SP
authors.lastname: Stampp
authors.forename: Dmitry M
authors.initials: DM
authors.lastname: Rudkevich