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Kinetics of the Reaction Between HBr and C2F5Br Determination of the Bond Dissociation Energy Z>(C2F5—Br)

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dc.contributor.author Ferguson, K. C.
dc.contributor.author Whittle, E.
dc.date.accessioned 2025-02-05T15:03:41Z
dc.date.available 2025-02-05T15:03:41Z
dc.date.issued 1972
dc.identifier.uri http://dspace.bits-pilani.ac.in:8080/jspui/handle/123456789/17224
dc.description.abstract The kinetics of the overall thermal reaction between HBr and C2F5Br, HBr + C2F5Br ⇌ Br2+ C2F5H (3, –3) were studied in the range 365–516°C. Reactions involved are Br + Br + M ⇌ Br2+ M kc, Br + C2F5Br ⇌ Br2+ C2F5(4, –4), C2F5+ HBr → C2F5H + Br. (5) The rate law expected from this mechanism was confirmed and the experimental rate constant for the bromine-atom transfer reaction (4) is given by log k4/(cm3 mol–1 s–1)=(14.30 ± 0.16)–(24070 ± 530)/θ(10) where θ= 2.303 RT/cal mol–1. These studies also yield values of k–4/k5, which when combined with previous results, lead to log(k–4/k5)=(0.65 ± 0.20)+(2360 ± 500)/θ. We propose that the value of E4 in eqn (10) should be modified to 22.8 kcal mol–1 which leads to a value of the bond dissociation energy D(C2F5—Br)= 68.6 kcal mol–1. The relation of this result to D(C2F5—H) and to ΔH°3, obtained from previous studies of equilibrium (3), is discussed. New data on equilibrium (3) are presented. en_US
dc.language.iso en en_US
dc.publisher Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1972, 68 (2) en_US
dc.subject Chemistry en_US
dc.subject Kinetics en_US
dc.subject Reaction en_US
dc.subject HBr en_US
dc.subject C2F5Br en_US
dc.subject Journal of the Chemical Society : Faraday Transaction - I en_US
dc.title Kinetics of the Reaction Between HBr and C2F5Br Determination of the Bond Dissociation Energy Z>(C2F5—Br) en_US
dc.type Article en_US


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