Propionitrile (CH3CH2CN, PN) is a molecule relevant for interstellar chemistry. There is credible evidence that anions, molecules, and radicals that may originate from PN could also be involved in the formation of more complex organic compounds. In the present investigation, dissociative electron attachment to CH3CH2CN has been studied in a crossed electron–molecular beam experiment in the electron energy range of about 0–15 eV. In the experiment, seven anionic species were detected: C3H4N−, C3H3N−, C3H2N−, C2H2N−, C2HN−, C2N−, and CN−. The anion formation is most efficient for CN− and anions originating from the dehydrogenation of the parent molecule. A discussion of possible reaction channels for all measured negative ions is provided. The experimental results are compared with calculations of thermochemical thresholds of the detected anions.
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14 May 2021
Research Article|
May 10 2021
Fragmentation of propionitrile (CH3CH2CN) by low energy electrons
A. Pelc
;
A. Pelc
a)
1
Mass Spectrometry Laboratory, Department of Biophysics, Maria Curie-Skłodowska University
, Pl. M. C.-Skłodowskiej 1, 20-031 Lublin, Poland
a)Authors to whom correspondence should be addressed: Andrzej.Pelc@poczta.umcs.lublin.pl and Stephan.Denifl@uibk.ac.at
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A. Ribar Valah;
A. Ribar Valah
2
Institute for Ion Physics and Applied Physics, University of Innsbruck
, Technikerstrasse 25, 6020 Innsbruck, Austria
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S. E. Huber
;
S. E. Huber
3
Department of Basic Sciences in Engineering Sciences, University of Innsbruck
, Technikerstraße 13, 6020 Innsbruck, Austria
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K. Marciszuk;
K. Marciszuk
1
Mass Spectrometry Laboratory, Department of Biophysics, Maria Curie-Skłodowska University
, Pl. M. C.-Skłodowskiej 1, 20-031 Lublin, Poland
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S. Denifl
S. Denifl
a)
2
Institute for Ion Physics and Applied Physics, University of Innsbruck
, Technikerstrasse 25, 6020 Innsbruck, Austria
a)Authors to whom correspondence should be addressed: Andrzej.Pelc@poczta.umcs.lublin.pl and Stephan.Denifl@uibk.ac.at
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a)Authors to whom correspondence should be addressed: Andrzej.Pelc@poczta.umcs.lublin.pl and Stephan.Denifl@uibk.ac.at
J. Chem. Phys. 154, 184301 (2021)
Article history
Received:
March 22 2021
Accepted:
April 20 2021
Citation
A. Pelc, A. Ribar Valah, S. E. Huber, K. Marciszuk, S. Denifl; Fragmentation of propionitrile (CH3CH2CN) by low energy electrons. J. Chem. Phys. 14 May 2021; 154 (18): 184301. https://doi.org/10.1063/5.0051059
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