Estimating electron affinity from the lifetime of negative molecular ions: Cycloheptatriene derivatives

Cycloheptatriene derivatives are studied by means of resonance electron capture negative ion mass spectrometry (REC NIMS). The average lifetimes of molecular negative ions (NIs) are measured with respect to electron autodetachment. Using the Arrhenius approach, electron affinity EA a of the molecule...

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Bibliographic Details
Published in:Russian Journal of Physical Chemistry A 2017-05, Vol.91 (5), p.915-920
Main Authors: Asfandiarov, N. L., Pshenichnyuk, S. A., Vorob’ev, A. S., Nafikova, E. P., Mavrodiev, V. K., Furlei, I. I., Dokichev, V. A., Platonov, D. N., Belyy, A. Yu
Format: Article
Language:English
Subjects:
Affinity
Beta decay
Chemistry
Chemistry and Materials Science
Derivatives
Electron affinity
Electron capture
Electron energy
Electron states
Energy of dissociation
Ions
Mass spectrometry
Molecular ions
Negative ions
Physical Chemistry
Structure of Matter and Quantum Chemistry
Thermal degradation
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Summary:Cycloheptatriene derivatives are studied by means of resonance electron capture negative ion mass spectrometry (REC NIMS). The average lifetimes of molecular negative ions (NIs) are measured with respect to electron autodetachment. Using the Arrhenius approach, electron affinity EA a of the molecules under study is estimated, and the effective temperature of the resulting negative molecular ions is determined as a function of the electron energy. It is assumed that the dissociation of negative molecular ions in the ground electronic state is a process similar to that of the thermal degradation of molecules.
ISSN:0036-0244
1531-863X
DOI:10.1134/S0036024417050041