Isotopic branching ratio for the reaction A+HD→AD(H)+H(D)

K. Tsukiyama, B. Katz, R. Bersohn

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Several reactions of the form A+HD→AD(H)+H(D) have been studied by a two laser experiment. One laser dissociates a molecule to form a reactive atom A and the second laser monitors the hydrogen atom products by laser induced fluorescence. When A is F(2P), O(1D), and S( 1D), the H/D ratios are 0.66±0.10, 1.13±0.08, and 1.91±0.10, respectively. Muckerman and co-workers have given qualitative arguments that abstraction reactions should have an H/D ratio less than one whereas insertion reactions should have H/D greater than one. Inasmuch as extensive previous experimental and theoretical work has shown that F( 2F)+H2 proceeds by abstraction whereas O( 1D)+H2 and S(1D)+H2 proceed largely by insertion, the present results are consistent with the general qualitative conjecture.

Original languageEnglish
Pages (from-to)2889-2893
Number of pages5
JournalJournal of Chemical Physics
Issue number6
StatePublished - 1 Jan 1985

ASJC Scopus subject areas

  • Physics and Astronomy (all)
  • Physical and Theoretical Chemistry


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