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Kinetics of C6H5 radical reactions with 2-methylpropane, 2,3-dimethylbutane and 2,3,4-trimethylpentane

✍ Scribed by J. Park; S. I. Gheyas; M. C. Lin

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 180 KB
Volume: 31
Category: Article
ISSN: 0538-8066
DOI: 10.1002/(sici)1097-4601(1999)31:9<645::aid-kin6>3.0.co;2-q

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✦ Synopsis

The absolute bimolecular rate constants for the reactions of C 6 H 5 with 2-methylpropane, 2,3-dimethylbutane and 2,3,4-trimethylpentane have been measured by cavity ringdown spectrometry at temperatures between 290 and 500 K. For 2-methylpropane, additional measurements were performed with the pulsed laser photolysis/mass spectrometry, extending the temperature range to 972 K. The reactions were found to be dominated by the abstraction of a tertiary C-H bond from the molecular reactant, resulting in the production of a tertiary alkyl radical:

6 5 3 3 6 6 4 9 C H ϩ (CH ) CHCH(CH ) !: C H ϩ t-C H (2)

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