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- Title
VUV Dissociative Photoionization of Quinoline in the 7–26 eV Photon Energy Range.
- Authors
Leach, Sydney; Jochims, Hans-Werner; Baumgärtel, Helmut; Champion, Norbert
- Abstract
The dissociative photoionization of quinoline was studied by photoionization mass spectrometry and ion yield measurements over a synchrotron photon excitation energy range 7–26 eV. The ionic and neutral products were identified with the aid of thermochemical calculations that, in some cases, led to deeper understanding of photodissociation pathways and the determination of upper limits of heats of formation of ionic and neutral dissociation products. A detailed comparison between the 20 eV photon excitation and 70 eV electron impact mass spectra, coupled with estimation of thermochemical appearance energies, leads to assignment of the dissociative ionization cation and neutral products for each detected ion. Reaction schemes for formation of these products are proposed in a number of cases. Ion intensities in the photon and electron impact mass spectra were used to consider extending a rule of charge retention in simple bond cleavage to more complex cases of dissociative ionization.
- Subjects
QUINOLINE; PHOTOIONIZATION; FAR ultraviolet radiation
- Publication
Zeitschrift für Physikalische Chemie, 2018, Vol 232, Issue 5-6, p845
- ISSN
0942-9352
- Publication type
Article
- DOI
10.1515/zpch-2017-1092