Isomeric +. Ions: Their Identification and Generation in Dissociative Ionizations

Article abstract of DOI:10.1002/oms.1210190103

The collisional activation (CA) and charge stripping (CS) mass spectra of the three ^+. isomers, allene, propyne and cyclopropene, are reported.The extent of isomerization among these ions prior to collisional excitation depends on their internal energy content, but is small.Each ^+. ion structure also can uniquely be generated via appropriate dissociative ionizations.Analysis of mixtures of ^+. (daughter) ion structures is, in general, not possible from CA and CS mass spectra alone but may be aided by appearance energy measurements.