Consecutive ionic reactions in gaseous butenes
- 1 January 1967
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Transactions of the Faraday Society
- Vol. 63, 926-931
- https://doi.org/10.1039/tf9676300926
Abstract
Ion-molecules reactions occurring in the four isomeric butenes have been studied up to a pressure of 0.5 torr inside a mass spectrometric source, where ionization is produced by tritium β-rays. Long-chain processes have been recognized, leading to the formation of polymeric ions. In isobutene, the predominant chain, which involves alkyl carbonium ions, has been followed up to C16H+ 33. This chain, although with a lower yield, has also been found in the other isomers. Minor chains and branching reactions complicate the mass-spectra at the highest pressures investigated, and lead mainly to CnH+ 2n–1 and CnH+ 2n–3 ions. Peculiar to the 2-butenes are extensive chains of odd-electron CnH+ 2n ions.Keywords
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