Electron impact studies. CXX—The properties of positive ions produced by charge stripping from negative ions. The acetate and perfluoroacetate cations

Abstract The ions [CF 3 CO 2 ] + and [CH 3 CO 2 ] + give peaks of small abundance in conventional positive ion spectra. These ions can be produced by collision‐induced charge stripping of the corresponding stable negative ions. Six and ten fragment ions respectively are observed in the spectra of [CF 3 CO 2 ] + and [CH 3 CO 2 ] + .