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Addition of ethyl radicals to carbon monoxide. Kinetic and thermochemical properties of the propionyl radical
Author(s) -
Watkins K. W.,
Thompson William W.
Publication year - 1973
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.550050507
Subject(s) - chemistry , radical , carbon monoxide , decomposition , atmospheric temperature range , reaction rate constant , kinetic energy , thermal decomposition , monoxide , carbon fibers , photochemistry , kinetics , inorganic chemistry , organic chemistry , catalysis , thermodynamics , physics , quantum mechanics , materials science , composite number , composite material
Abstract Azoethane was irradiated in the presence of carbon monoxide in the temperature range of 238 to 378 K. Kinetic parameters for the addition of ethyl radicals to carbon monoxide and for the decomposition of propionyl radicals were determined. The rate constants were found to be log k (cm 3 mol −1 sec −1 ) = 11.19 ‐ 4.8/θ and log k (sec −1 ) = 12.77 ‐ 14.4/θ, respectively. Estimated thermochemical properties of the propionyl radical are ΔH f 0 = ‐10.6 ± 1.0 kcal mol −1 , S 0 = 77.3 ± 1.0 cal K −1 mol −1 , and D (C 2 H 5 COH) = 87.4 kcal mol −1 .