Controlling tunnelling in methane loss from acetone ions by deuteration
Literature Information
Andras Bodi, Tomas Baer, Nancy K. Wells, Daniel Fakhoury, David Klecyngier, James P. Kercher
Energetic acetone cations decay by methane or methyl radical loss. Although the methane-loss barrier to form the ketene cation is higher and the activation entropy is lower, it has a significant branching ratio at low energies thanks to quantum tunnelling. H-atom tunnelling can be selectively quenched and the methane-loss channel suppressed quantitatively by deuteration.
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