Volume 115, 2000

Transition state dynamics of the OH+H2O hydrogen exchange reaction studied by dissociative photodetachment of H3O2

Abstract

Dynamics in the transition state region of the bimolecular OH+H2O→H2O+OH hydrogen exchange reaction have been studied by photoelectron–photofragment coincidence spectroscopy of the H3O2 negative ion and its deuterated analog D3O2. The data reveal vibrationally resolved product translational energy distributions. The total translational energy distribution shows a vibrational progression indicating excitation of the antisymmetric stretch of the water product. Electronic structure calculations at the QCISD level of theory support this analysis. Examination of the translational energy release between the neutral products reveals a dependence on the product vibrational state. These data should provide a critical test of ab initio potential energy surfaces and dynamics calculations.

Article information

Article type
Paper
Submitted
06 Dec 1999
First published
08 May 2000

Faraday Discuss., 2000,115, 147-160

Transition state dynamics of the OH+H2O hydrogen exchange reaction studied by dissociative photodetachment of H3O2

H. Deyerl, A. Khai Luong, T. G. Clements and R. E. Continetti, Faraday Discuss., 2000, 115, 147 DOI: 10.1039/A909619A

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