Premium
The thermochemical kinetics of retro‐ “ene” reactions of molecules with the general structure (allyl) XYH in the gas phase. IX. The thermal unimolecular decomposition of ethyallylether in the gas phase
Author(s) -
Egger Kurt W.,
Vitins Peter
Publication year - 1974
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.550060312
Subject(s) - chemistry , arrhenius equation , reaction rate constant , thermal decomposition , ene reaction , kinetics , decomposition , gas phase , acetaldehyde , atmospheric temperature range , thermodynamics , activation energy , organic chemistry , ethanol , physics , quantum mechanics
The thermal decomposition of ethylallylether (EAE) has been studied in the gas phase over the temperature range of 560–648°K. Propylene and acetaldehyde are the only reaction products observed. The reaction is apparently homogeneous in nature and independent of the pressure of EAE and of added foreign gases. The experimetally determined first‐order rate constants, using the internal standard technique, fit the Arrhenius relationship log k(s −1 ) = 11.84 ± 0.29 − (43.57 ± 0.77 kcal/mole)/2.303 RT. Independently the same rate constants are obtained, based on the amounts of products formed. The observed activation parameters are in general agreement with expectations based on the concept of a 6‐center 1,5‐H‐shift retro‐“ene” reaction mechanism, and they agree with previous results obtained for the similar reactions involving alkylallylamines and olefins.