title: Dynamics of the F2+CH3SCH3 reaction: a molecule-molecule reaction without entrance barrier.
abstract: The F(2)+CH(3)SCH(3) reaction was studied with crossed molecular beam techniques and high level ab initio calculations. Significant reactivity was observed even at low collision energies, consistent with the negligible barrier height obtained from the ab initio calculations. All experimental findings are consistent with a weakly bound reaction intermediate of F-F-S(CH(3))(2) structure, which possesses a special type of three-center four-electron bonding. Analogous intermediates can also explain the reactions of F(2) with CH(3)SH and CH(3)SSCH(3).
authors.affiliation: Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan.
authors.forename: Yu-Ju
authors.initials: YJ
authors.lastname: Lu
authors.forename: Lance
authors.initials: L
authors.lastname: Lee
authors.forename: Jun-Wei
authors.initials: JW
authors.lastname: Pan
authors.forename: Henryk A
authors.initials: HA
authors.lastname: Witek
authors.forename: Jim J
authors.initials: JJ
authors.lastname: Lin