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Title

Computational study of the thermal decomposition and the thermochemistry of allyl ethers and allyl sulfides

AuthorsAristizabal, L.; Ángel, Mariana; Orozco, Camila; Ruiz, Pablo; Quijano, J.; Notario, Rafael
Issue Date2018
PublisherKluwer Academic/Plenum Publishers
CitationStructural Chemistry 29: 897- 907 (2018)
AbstractIn spite of the several experimental and computational studies on the thermal decomposition of allyl ethers and allyl sulfides, there are still disagreements on aspects of the reaction mechanism, such as the true nature of the transition states and the grade of synchronicity of the reactions. This work presents a computational study of the gas-phase thermolysis reaction of allyl ethers and allyl sulfides substituted at α-carbon, at the M05-2X/6-31+G(d,p) level of theory and a temperature range from 586.15 to 673.15 K. The substituent groups were methyl, ethyl, n-propyl, i-propyl, allyl, benzyl and acetonyl. It was found that the sulfides react faster than the homologous ethers and that the substituent groups with the capacity of delocalize charge increase the reaction rate. Through natural bond orbital calculations, the transition states were characterized. The synchronicities and atomic charges of the studied reactions were determined. A computational study at the G3 level of theory on the thermochemistry of allyl ethers and sulfides was also carried out.
URIhttp://hdl.handle.net/10261/167270
DOIhttp://dx.doi.org/10.1007/s11224-018-1074-8
Identifiersdoi: 10.1007/s11224-018-1074-8
issn: 1040-0400
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