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The thermal decomposition of 4‐methyl‐3,6‐dihydro‐2H‐pyran
Author(s) -
Frey Henry M.,
Watts Hugo P.
Publication year - 1981
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.550130804
Subject(s) - chemistry , arrhenius equation , thermal decomposition , decomposition , atmospheric temperature range , reaction rate constant , pyran , formaldehyde , homogeneous , thermodynamics , pyrolysis , computational chemistry , kinetics , organic chemistry , activation energy , physics , quantum mechanics
The thermal decomposition of the title compound has been studied in the gas phase in the temperature range of 584–634 K. The decomposition was found to be a first‐order homogeneous process yielding 2‐methylbuta‐1,3‐diene and formaldehyde. The rate constants obtained at 11 temperatures within the quoted range fitted the Arrhenius equation\documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm log}k/({\rm s}^{ - 1}) = 14.619 \pm 0.030 - (209.48 \pm 0.35)\,{\rm kJ}\,{\rm mol}^{ - 1} /RT\,\ln \,10 $$\end{document}The decomposition is probably unimolecular and concerted.