REACTIONS OF GASEOUS IONS .17. METHANE + UNSATURATED HYDROCARBONS

Rapid proton transfer reactions are observed between [formula-omitted] and ethylene, propylene, and isobutylene. However, [formula-omitted] adds to acetylene to give mostly [formula-omitted] by a second-order process and [formula-omitted] by a collision-stabilized addition reaction. [formula-omitted] also reacts predominantly by proton transfer with propylene and isobutylene, but adds to ethylene and acetylene in collision-stabilized processes. Three-body alkylation reactions were observed for [formula-omitted] and C2H4 and [formula-omitted] and C3H6 to a much greater extent than for [formula-omitted] + i-C4H8. Estimates are made for lifetimes of collision complexes for several reactions. © 1969, American Chemical Society. All rights reserved.