Réactions des ions moléculaires cyclohexane en phase gazeuse

Abstract

The [Formula: see text] ions formed in the photoionization of cyclohexane (resonance lines of argon: 11.6–11.8 eV) react with cyclic (C3 and C4) and unsaturated hydrocarbons by H2 transfer. This reaction is quantitative with propene, 1-butene, 1-pentene, 1,3-butadiene, and isobutene. This transfer is efficient only if there is a terminal double bond. There is ring opening with the C3 and C4 hydrocarbons. H atom transfer reactions are also observed between [Formula: see text] ions and several compounds and the structure of the radical formed in such a reaction is determined by chemical analysis. With cis-2-butene, there is only charge transfer reaction.