Ion–molecule reactions in vinyl fluoride

Abstract

The ion–molecule reactions in vinyl fluoride have been studied as a function of pressure and electron energy. The C₂H₂⁺ and C₂HF⁺ fragment ions react predominantly by charge transfer while C₂H₃⁺ produces C₂H₄F⁺ and C₄H₅⁺. The C₂H₂F⁺ fragment forms C₂H₄F⁺, CHF₂⁺, C₂H₃F₂⁺, C₄H₄F⁺, and probably C₂H₃⁺. The rate constants for the individual reactions have been measured. The C₂H₃F⁺ ion reacts to form C₃H₅⁺, C₃H₄F⁺, C₃H₃F₂⁺, and C₄H₅F⁺ (in minor yield), both by a second order and by a third order reaction. The rate constants and product distributions from the individual reactions have been evaluated. A number of consecutive reactions have been identified and shown to be third order processes.