title: S(vi) Lewis acids: fluorosulfoxonium cations.
abstract: Avenues to S-based Lewis acids were developed via the oxidation of aryl-sulfoxides with XeF2, giving difluorodiarylsulfoxides which react via fluoride abstraction to afford Lewis acidic fluorosulfoxonium cations; this acidity is derived from the S-F σ* orbital and has been probed both experimentally and computationally.
authors.affiliation: Department of Chemistry, University of Toronto, 80 St. George St, Toronto, Ontario, CanadaM5S 3H6. dstephan@chem.utoronto.ca.
authors.forename: Fu An
authors.initials: FA
authors.lastname: Tsao
authors.affiliation: Department of Chemistry, University of Toronto, 80 St. George St, Toronto, Ontario, CanadaM5S 3H6. dstephan@chem.utoronto.ca.
authors.forename: Alexander E
authors.initials: AE
authors.lastname: Waked
authors.affiliation: Department of Chemistry, University of Toronto, 80 St. George St, Toronto, Ontario, CanadaM5S 3H6. dstephan@chem.utoronto.ca.
authors.forename: Levy
authors.initials: L
authors.lastname: Cao
authors.affiliation: Department of Chemistry, University of Toronto, 80 St. George St, Toronto, Ontario, CanadaM5S 3H6. dstephan@chem.utoronto.ca.
authors.forename: Jordan
authors.initials: J
authors.lastname: Hofmann
authors.affiliation: Mulliken Center for Theoretical Chemistry, Institut fuer Physikalische und Theoretische Chemie, Universitaet Bonn, Beringstrasse 4, D-53115 Bonn, Germany.
authors.forename: Lei
authors.initials: L
authors.lastname: Liu
authors.affiliation: Mulliken Center for Theoretical Chemistry, Institut fuer Physikalische und Theoretische Chemie, Universitaet Bonn, Beringstrasse 4, D-53115 Bonn, Germany.
authors.forename: Stefan
authors.initials: S
authors.lastname: Grimme
authors.affiliation: Department of Chemistry, University of Toronto, 80 St. George St, Toronto, Ontario, CanadaM5S 3H6. dstephan@chem.utoronto.ca.
authors.forename: Douglas W
authors.initials: DW
authors.lastname: Stephan