Resonance-enhanced photodissociation spectra of cation-rare gas complexes: the forbidden B .rarw. X transition of chlorobenzene-argon and fluorobenzene-argon cations
| Autor: | Evan J. Bieske, Mark W. Rainbird, Alan E. W. Knight |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Argon
Chemistry Photodissociation General Engineering chemistry.chemical_element Photochemistry Mass spectrometry Dissociation (chemistry) Excited state Ionization Physics::Atomic and Molecular Clusters Halobenzene Physics::Chemical Physics Physical and Theoretical Chemistry Atomic physics Laser-induced fluorescence |
| Zdroj: | The Journal of Physical Chemistry. 94:3962-3967 |
| ISSN: | 1541-5740 0022-3654 |
| DOI: | 10.1021/j100373a018 |
| Popis: | Photodissociation spectra of the weakly chlorobenzene-argon and fluorobenzene-argon cation complexes are presented along with an interpretation of these spectra in terms of the electronic and vibrational structure of halobenzene cations coupled to a weakly perturbing rare gas atom. The cations are created by resonance-enhanced multiphoton ionization in a skimmed supersonic expansion and are laser dissociated in the source region of a time of flight mass spectrometer. The authors data confirm the assignment of previously reported photoelectron spectra and lead to comment on the role that rare gas atoms play in matrix absorption and laser induced fluorescence spectra of cations. Presence in the spectra of transitions from vibrationally excited cation complexes allows them to set a probable lower bound on the dissociation threshold for the X-state ions and to gauge the extent of intramolecular relaxation from high-frequency ring modes. |
| Databáze: | OpenAIRE |
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