Unimolecular dissociations and internal conversions of methyl halide ions

Photoelectron-photoion coincidence measurements on the methyl halide ion dissociations show that when these ions are formed in different electronic states they undergo specific reactions to different products. Some interconversion between electronic states also occurs to an extent which correlates with the energy gaps between the states concerned. Within certain states the vibrational energy is not statistically redistributed before fragmentation.