The temperature dependence of the rate constant for the reaction F+DBr→DF+Br

Erella Schwartz; Avigdor Persky

doi:10.1016/0009-2614(92)85942-4

The temperature dependence of the rate constant for the reaction F+DBr→DF+Br

Erella Schwartz, Avigdor Persky

Department of Chemistry

Bar-Ilan University

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

The ratio of rate constants k_F+DBr/k_F+H₂ has been determined by a discharge-flow-mass spectrometric technique and was found to exhibit a linear Arrhenius temperature dependence in the range 210-298 K. Based on the linear dependence reported for k_F+H₂, it is concluded that k_F+DBr also exhibits a linear Arrhenius temperature dependence. The present results for k_F+DBr are consistent with earlier results for k_F+HBr and confirm our earlier conclusion that the mechanism of the reaction is probably a direct hydrogen atom abstraction. Results concerning the kinetic isotope effect k_F+HBr/k_F+DBr are also presented and discussed.

Original language	English
Pages (from-to)	133-138
Number of pages	6
Journal	Chemical Physics Letters
Volume	196
Issue number	1-2
DOIs	https://doi.org/10.1016/0009-2614(92)85942-4
State	Published - 7 Aug 1992

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title = "The temperature dependence of the rate constant for the reaction F+DBr→DF+Br",

abstract = "The ratio of rate constants kF+DBr/kF+H2 has been determined by a discharge-flow-mass spectrometric technique and was found to exhibit a linear Arrhenius temperature dependence in the range 210-298 K. Based on the linear dependence reported for kF+H2 , it is concluded that kF+DBr also exhibits a linear Arrhenius temperature dependence. The present results for kF+DBr are consistent with earlier results for kF+HBr and confirm our earlier conclusion that the mechanism of the reaction is probably a direct hydrogen atom abstraction. Results concerning the kinetic isotope effect kF+HBr/kF+DBr are also presented and discussed.",

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AU - Schwartz, Erella

AU - Persky, Avigdor

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N2 - The ratio of rate constants kF+DBr/kF+H2 has been determined by a discharge-flow-mass spectrometric technique and was found to exhibit a linear Arrhenius temperature dependence in the range 210-298 K. Based on the linear dependence reported for kF+H2 , it is concluded that kF+DBr also exhibits a linear Arrhenius temperature dependence. The present results for kF+DBr are consistent with earlier results for kF+HBr and confirm our earlier conclusion that the mechanism of the reaction is probably a direct hydrogen atom abstraction. Results concerning the kinetic isotope effect kF+HBr/kF+DBr are also presented and discussed.

AB - The ratio of rate constants kF+DBr/kF+H2 has been determined by a discharge-flow-mass spectrometric technique and was found to exhibit a linear Arrhenius temperature dependence in the range 210-298 K. Based on the linear dependence reported for kF+H2 , it is concluded that kF+DBr also exhibits a linear Arrhenius temperature dependence. The present results for kF+DBr are consistent with earlier results for kF+HBr and confirm our earlier conclusion that the mechanism of the reaction is probably a direct hydrogen atom abstraction. Results concerning the kinetic isotope effect kF+HBr/kF+DBr are also presented and discussed.

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ER -

The temperature dependence of the rate constant for the reaction F+DBr→DF+Br

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