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Bianchini, R.* ; Chiappe, C.* ; Lenoir, D. ; Goldberg, N.*

Spectroscopic and theoretical investigations of electrophilic bromination reactions of alkynes : The first evidence for complexes as reaction intermediates.

Chem. Eur. J. 5, 1570-1580 (1999)

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Open Access Green as soon as Postprint is submitted to ZB.

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The first direct detection of a 1:1 Br₂–alkyne complex as an intermediate during the addition of Br₂ to alkynes is reported. The measured negative apparent activation energies for bromination of arylalkylacetylenes are only compatible with the formation of a reactive complex that precedes the rate-determining step. Quantum-chemical calculations suggest that the Br₂ in the 1:1 complex functions as a donor for a second Br₂ molecule as depicted here, giving a trimolecular complex structurally very similar to a stable Br₂–Br₂–alkene adduct reported some time ago.

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Publication type Article: Journal article

Document type Scientific Article

Corresponding Author

ISSN (print) / ISBN 0947-6539

e-ISSN 1521-3765

Journal Chemistry - A European Journal

Quellenangaben Volume: 5, Issue: 5, Pages: 1570-1580

Publisher Wiley

Non-patent literature Publications

Reviewing status Peer reviewed

Institute(s) Institute of Ecological Chemistry (IOEC)