Energetics of the ionization and fragmentation of phosphorus oxyfluoride studied by electron-impact spectroscopy

Abstract

The relative intensities and appearance energies of several positive ions in the mass spectrum of POF3 are reported together with an ionization-efficiency curve for F–, the only negative ion of significant intensity. Probable ion-fragmentation pathways are proposed together with the heats of formation of some positive ions and ionization energies for POF2 and POF. The appearance energies of various electronic states of the observed ions have been determined by deconvolution of the experimental ionization efficiency curves by the energy-distribution difference method.