REACTIONS OF CF-1,3-DIENE(, CF2+, AND CF3+ WITH PERFLUOROBUTA)

The gas-phase reactions of CF+, CF2+, and CF3+ with perfluorobuta-1,3- diene (1,3-C4F6) have been studied using a selected ion flow tube (SIF T) instrument. Reaction rate constants and product branching fractions were measured at 300 K. The reactions all proceed with unit efficienc y. The reactions of CF+ and CF2+ with C4F6 both proceed by two pathway s: fluoride (F-) transfer and charge transfer. The ion CF3+ reacts wit h C4F6 by fluoride transfer exclusively. The results for CF3+ are comp ared with available data on reactions of CF3+ with C2F4 and higher per fluoroolefins.