Ion chemistry of fluoroethylene parent ions thermal energy reactions in mixtures of fluoroethylenes

Abstract

The total rate constant for parent ion loss has been measured in all possible mixtures of fluoroethylene molecules. These include C 2H 4, C 2H 3F, CH 2CF 2, cis-CHFCHF, trans-CHFCHF, CHF 3, and C 2F 4. These total ion loss rate constants were separated into their charge exchange and condensation components. The condensation products are principally C 2(H, F) 4 + ions resulting from methylene switching reactions or C 3(H, F) 5 + ions resulting from C(H, F) 3 elimination. All condensation products result from highly specific mechanisms. Discussions of the details of possible mechanisms are given. Isotopic labelling studies utilising C 2D 4, cis- and trans-CDFCDF and CDF 3 are also investigated and mechanistic conclusions presented. Ion cyclotron resonance spectroscopy is utilised.