title: Conformational equilibrium and dynamic behavior of bis-N-triflyl substituted 3,8-diazabicyclo[3.2.1]octane.
abstract: Restricted rotation about the N-S partial double bonds in a bis-N-triflyl substituted 3,8-diazabicyclo[3.2.1]octane derivative 1 has been frozen at low temperature (ΔG(≠)  = 11.6 kcal mol(-1)), and the existence of all four rotamers about the two N-S bonds, 3-in,8-in, 3-in,8-out, 3-out,8-in, and 3-out,8-out, respectively, proved experimentally by NMR spectroscopy and theoretically by DFT and MP2 calculations.
authors.affiliation: A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Division of the Russian Academy of Science, 1 Favorsky Street, 664033, Irkutsk, Russian Federation.
authors.forename: Bagrat A
authors.initials: BA
authors.lastname: Shainyan
authors.forename: Mikhail Yu
authors.initials: MY
authors.lastname: Moskalik
authors.forename: Matthias
authors.initials: M
authors.lastname: Heydenreich
authors.forename: Erich
authors.initials: E
authors.lastname: Kleinpeter
keywords: 13C; 19F; 1H; Conformational equilibrium; Dynamic NMR; NMR; restricted N-S rotation