Rate constants and kinetic isotope effects in hydrogen abstractions by H from formic acid

Rate constants and kinetic isotope effects in hydrogen abstractions by H from formic acid Competitive kinetic experiments were performed for the reactions of H atoms with HCOOH and DCOOD in aqueous solution. Excellent Arrhenius behavior is represented by log(k/M-1 s-1) = (11.6 ± 0.2) - (34.0 ± 1.1) kJ mol-1/2.303RT ) for HCOOH, log(k/M-1 s-1) = (11.8 ± 0.2) - (39.8 ± 1.2) kJ mol-1/2.303RT ) for DCOOD. Kinetic isotope effects are discussed in terms of transition state theory, supported by ab initio calculations, and in comparison with previous results for the abstraction from the formate ion. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Rate constants and kinetic isotope effects in hydrogen abstractions by H from formic acid

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Publisher
Brill Academic Publishers
Copyright
Copyright © 2001 by VSP
Subject
Chemistry; Inorganic Chemistry; Physical Chemistry; Catalysis
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1163/156856701104202129
Publisher site
See Article on Publisher Site

Abstract

Competitive kinetic experiments were performed for the reactions of H atoms with HCOOH and DCOOD in aqueous solution. Excellent Arrhenius behavior is represented by log(k/M-1 s-1) = (11.6 ± 0.2) - (34.0 ± 1.1) kJ mol-1/2.303RT ) for HCOOH, log(k/M-1 s-1) = (11.8 ± 0.2) - (39.8 ± 1.2) kJ mol-1/2.303RT ) for DCOOD. Kinetic isotope effects are discussed in terms of transition state theory, supported by ab initio calculations, and in comparison with previous results for the abstraction from the formate ion.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Jul 1, 2001

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