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Formation of 2-hexene by cationic dimerization of propene: an ab initio and density functional theory study
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Quantum Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Quantum Chemistry.
Responsible organisation
1997 (English)In: Theoretical Chemistry accounts, ISSN 1432-881X, E-ISSN 1432-2234, Vol. 97, no 1-4, 277-282 p.Article in journal (Refereed) Published
Abstract [en]

The formation of a 2-hexene radical cation from a propene radical cation and a neutral propene molecule is investigated by means of ab initio UHF and spin projected MP2 calculations, as well as the SVWN and B3LYP levels of density functional theory. A stable addition complex, with loose CC bonds, is found. To proceed from the addition complex to the product. a locally planar transition state must be passed, with a migrating hydrogen located half-way between the donating and the accepting carbon atoms. At the highest computational levels considered, PMP2/6-31G(d,p)//MP2/3-21G and B3LYP/6-31G(d,p), this transition state lies approximately 11 and 13 kcal/mol, respectively above the addition complex. The high barrier is believed to be one reason why radical cation oligomerization of propene has not been detected experimentally, in contrast to the case of ethene, where the corresponding barrier is only a few kcal/mol.

Place, publisher, year, edition, pages
1997. Vol. 97, no 1-4, 277-282 p.
Keyword [en]
propene cation, cationic dimerization, 2-hexene
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-150603DOI: 10.1007/s002140050262ISI: A1997YC02500031OAI: oai:DiVA.org:uu-150603DiVA: diva2:407918
Available from: 2011-04-01 Created: 2011-04-01 Last updated: 2017-12-11Bibliographically approved

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Salhi-Benachenhou, NessimaLunell, Sten

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