ISSN:
0018-019X
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
A shock wave study of the thermal decomposition of nitroethane in excess Ar at temperatures 900 〈 T 〈 1350 K and total concentrations of 4,5 · 10-6 〈 [Ar] 〈 3 · 10-4 mol cm-3 showed that the C—N-bond fission \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm C}_{\rm 2} {\rm H}_{\rm 5} {\rm NO}_{\rm 2} (+ {\rm M}) \to {\rm C}_{\rm 2} {\rm H}_{\rm 5} {\rm + NO}_{\rm 2} (+ {\rm M}) $$\end{document} is the primary reaction step. This unimolecular reaction could be observed in its transition region near the high pressure limit. The derived rate constants are k∞ = 1015.9 exp (-57 kcal mol-1/RT) s-1 for the high pressure and k0/[Ar] = 1018.0 exp (-36 kcal mol-1/RT) cm3 mol-1 s-1 (at T ≃ 1100-1200 K) for the low pressure limit.The observed concentration profiles of C2H5NO2 and NO2 permitted to conclude on the subsequent decomposition of the ethyl radical \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm C}_{\rm 2} {\rm H}_{\rm 5} (+ {\rm M}) \to {\rm C}_{\rm 2} {\rm H}_{\rm 4} {\rm + H}(+ {\rm M}) $$\end{document} This reaction was found to be in the fall-off range under the applied conditions.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/hlca.19730560203
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