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Rate coefficients for the reactions of hydrogen atoms with 1-bromopropane, 2-bromopropane, 1-bromobutane, and 2-bromobutane

✍ Scribed by T. Meinike; L. Engelmann; M. Olzmann; K. Scherzer

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 150 KB
Volume: 30
Category: Article
ISSN: 0538-8066
DOI: 10.1002/(sici)1097-4601(1998)30:10<721::aid-kin4>3.0.co;2-x

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✦ Synopsis

The rate coefficients for the reactions of hydrogen atoms with n-C 3 H 7 Br, s-C 3 H 7 Br, n-C 4 H 9 Br, and s-C 4 H 9 Br were determined in a discharge flow-reactor at and a pressure 298 K of Molecular-beam sampling and subsequent mass-spectrometric detection with elec-4 mbar. tron-impact ionisation was used for the measurement of the bromo-hydrocarbon concentration. The rate coefficients obtained are (in ):

for n-C 3 H 7 Br, 10 3

for n-C 4 H 9 Br, and for s-C 4 H 9 Br. The results are compared 1.2 2.4 Ϯ 1.2 2.8 Ϯ 1.4 with predictions from bond-energy bond-order (BEBO) calculations, where a reasonable agreement is found. Furthermore, also by BEBO calculations, the relative importance of bromine abstraction as compared to hydrogen abstraction is estimated.

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