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

K. Tsukiyama; B. Katz; R. Bersohn

doi:10.1063/1.449241

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

K. Tsukiyama, B. Katz, R. Bersohn

Department of Chemistry

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Abstract

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 language	English
Pages (from-to)	2889-2893
Number of pages	5
Journal	Journal of Chemical Physics
Volume	83
Issue number	6
DOIs	https://doi.org/10.1063/1.449241
State	Published - 1 Jan 1985

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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title = "Isotopic branching ratio for the reaction A+HD→AD(H)+H(D)",

abstract = "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.",

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AU - Tsukiyama, K.

AU - Katz, B.

AU - Bersohn, R.

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N2 - 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.

AB - 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.

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

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