Structure of Gas Phase +. Ions

Article abstract of DOI:10.1002/oms.1210200316

Charge-stripping spectra have been used to differentiate ionized cyclopentadiene from its acyclic isomers.The minimum amounts of translational energy lost during the charge-stripping processes and the relative charge-stripping efficiencies, which are also structurally important parameters, have been measured for these ionic species. ^+. ions, formed by dissociative ionization of various precursors in the ion source are found, usually, to be a mixture of cyclic and acyclic ions.In contrast, ^+. ions, derived from the dissociation of metastable molecular ions from a series of organic compounds, have the cyclopentadienyl structure.This structure was confirmed by collision-induced dissociation of ions formed in the first field-free region of a triple sector mass spectrometer.