Evidence for protonated cyclopropane intermediates in crossed-beam ion molecule reactions

✍ Scribed by J. Weiner; A. Lee; R. Wolfgang

• Book ID: 103014505
• Publisher: Elsevier Science
• Year: 1972
• Tongue: English
• Weight: 245 KB
• Volume: 13
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(72)85029-2

✦ Synopsis

Ihe structure of CeHi intermediate formed in the gas-phase reaction of C~HG with C2H: has been the subject of much speculation due to its importance as 2 test case for theories of unimoleculv decay.

Isotopically labeled product distributions from recent crossed-&m studies and previous mass-spectrometer observations suzest a methyl-substituted protonated cyclopropane as 2 possible structure. Experimental evidence strondy indicates 2 long-lived intermediate in which the ring hydrogens are completely randomized prior to unimolecular decay of the complex.