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• W1972838812 abstract "A detailed theoretical study on the pressure and temperature dependence of the rate constants k1, k2, k3 for the thermal β-C–H dissociation of the three radicals: HOCH2O˙, CH3OCH2O˙, CH3OCH2OCH2O˙ is presented. This investigation is extended to the rate constant k4 for the 1,6-H-shift isomerisation of CH3OCH2OCH2O˙. High-level ab initio computations (CCSD(T)//MP2) have been performed and combined with RRKM theory to obtain rate constants. The β-C–H scission pathway is predicted to occur with an activation energy of 10–13 kcal mol−1. Estimation of the competition between the β-C–H and β-C–O decompositions, the isomerisation process, and the reaction with oxygen has been done. At 760 Torr and 298 K, k1, k2, k3, k4 are 4.4 × 104 s−1, 5.2 × 104 s−1, 4.2 × 103 s−1 and 5.6 × 103 s−1 respectively. An interesting result is that the isomerisation through a seven-membered transition state may compete with the H-atom elimination from the CH3OCH2OCH2O˙ radical." @default.
• W1972838812 created "2016-06-24" @default.
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• W1972838812 date "2003-01-01" @default.
• W1972838812 modified "2023-10-06" @default.
• W1972838812 title "Degradation of three oxygenated alkoxy radicals of atmospheric interest: HOCH₂O˙, CH₃OCH₂O˙, CH₃OCH₂OCH₂O˙. RRKM theoretical study of the β-C–H bond scission and the 1,6-isomerisation kinetics" @default.
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• W1972838812 doi "https://doi.org/10.1039/b313251j" @default.
• W1972838812 hasPublicationYear "2003" @default.
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