期刊
CHEMICAL PHYSICS LETTERS
卷 396, 期 1-3, 页码 16-20出版社
ELSEVIER
DOI: 10.1016/j.cplett.2004.07.104
关键词
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An ab initio direct molecular dynamics study of the reaction of CH3+ with benzene has been performed and the mechanism of reaction examined. Ab initio energy and gradient evaluations were done at the QCISD/6-31+G** and MP2/6-31+G** levels. The primary products of reaction were several isomeric forms of arenium ion (a complex). The reaction proceeds through a single channel, a direct barrierless insertion of a methyl cation into benzene to form a sigma complex. The direct insertion mechanism supports a recent quantum chemical study but differs from that posited in earlier experimental and theoretical studies of the reaction, which have assumed formation of a stable pi complex. The molecular dynamics simulation shows that product arenium ions are internally energetic enough for a hydrogen to shift about the benzenium ring to form several isomers. (C) 2004 Elsevier B.V. All rights reserved.
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