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Substituent effects on the disproportionation-combination rate constant ratios for gas-phase halocarbon radicals. Part III: Reactions of CF3 + CF3CH2 CHCF3 and CF3 CH2CHCF3 + CF3CH2 CHCF3

✍ Scribed by Derek R. McDowell; Bert E. Holmes

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 412 KB
Volume: 28
Category: Article
ISSN: 0538-8066
DOI: 10.1002/(sici)1097-4601(1996)28:2<109::aid-kin6>3.0.co;2-z

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✦ Synopsis

Disproportionationkombination rate constant ratios, kd/&[, for the reactive collision between CF3CH2CHX + CF, radicals and between CF3CH2CHX + CF3CH2CHX radicals have been measured for X = CF, The kd/k, = 0.066 -t 0 01 3 when H is transferred to the CF3 radical and 0 I25 ? 0.025 for H transfer to the CF3CH2CHCF3 radical. Comparison of these results with previous work shows that X = C F 3 increases the k,/k,'s relative to X=C1 or H. The effect of the CF3 substituent on the disproportionation rate is discussed.

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