Negative collision energy dependence of Br formation in the OH + HBr reaction

Literature Information

Publication Date 2007-12-17
DOI 10.1039/B713322G
Impact Factor 3.676
Authors

Dock-Chil Che, Takashi Matsuo, Yuya Yano, Laurent Bonnet, Toshio Kasai


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Abstract

The reaction between HBr and OH leading to H2O and Br in its ground state is studied by means of a crossed molecular beam experiment for a collision energy varying from 0.05 to 0.26 eV, the initial OH being selected in the state |JΩ〉 = | 〉 by an electrostatic hexapole field. The reaction cross-section is found to decrease with increasing collision energy. This negative dependence suggests that there is no barrier on the potential energy surface for the formation pathway considered. The experimental results are compared with the previously reported quantum scattering calculations of Clary et al. (D. C. Clary, G. Nyman and R. Hernandez, J. Phys. Chem., 1994, 101, 3704), and briefly discussed in the light of skewed potential energy surfaces associated with heavy–light–heavy type reactions.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
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