Reaction of pentafluoroethyl radicals with cyanogen chloride
- 1 January 1982
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases
- Vol. 78 (12) , 3493-3498
- https://doi.org/10.1039/f19827803493
Abstract
The reaction of C2F5 radicals with cyanogen chloride was studied between 293 and 573 K, using perfluoroethyl iodide as the free-radical source. The main product, C2F5Cl, is formed via an addition reaction or by abstraction of a chlorine atom by C2F5. The reactions involved are C2F5+ ClCN → C2F5Cl + CN (2), C2F5+ ClCN ⇌ C2F5ClCN (3), C2F5+ ClCN → C2F5Cl + CN (4), C2F5+ C2F5 [graphic omitted] C4F10. The Arrhenius plot shows pronounced curvature. The following rate constants were obtained for reaction (2) and (4) log [(k2//k½c )/cm mol–½ s–½]= 6.91 – 57.10 kJ mol–1/2.303 RT, log [(k3//k½c )/cm mol–½ s–½]= 2.32 – 20.55 kJ mol–1/2.303 RT were kc is the rate constant for C2F5 combination. The results are compared with those for the reaction of CF3 with ClCN.Keywords
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