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The cyclopropanation reaction of ethene with aluminum carbenoid has been studied by means of the B3LYP hybrid density functional method. The reaction goes through two pathways: methylene transfer and carbometalation. In methylene transfer pathway, a quantum-chemical investigation shows that the reactions of the carbenoids X 2 AlCH 2 X 1-X, (X=F, Cl, Br, I) with ethene 2 to cyclopropane...
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