期刊
JOURNAL OF CHEMICAL PHYSICS
卷 151, 期 22, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.5130547
关键词
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资金
- Sao Paulo Research Foundation (FAPESP) [2015/23792-5, 2016/21880-7]
- FAPESP [2017/24145-9]
- National Council for Scientific and Technological Development (CNPq) [304571/2018-0]
- Excellence Initiative of Aix-Marseille University (A*MIDEX) - French Government Investissements d'Avenir program
- project Equip@Meso - French Government Investissements d'Avenir program [ANR-10-EQPX-29-01]
- WSPLIT project [ANR-17-CE05-0005-01]
A novel theoretical framework for describing the dynamics of transient anions is presented. An ensemble of classical trajectories is propagated on-the-fly, where resonance energies are computed with bound state techniques, and resonance widths are modeled with a combination of bound state and scattering calculations. The methodology was benchmarked against quantum dynamics results for model potential energy curves, and excellent agreement was attained. As a first application, we considered the electron induced dissociation of chloroethane. We found that electron attachment readily stretches the C-Cl bond, which stabilizes the transient anion within similar to 10 fs and leads to the release of fast chloride ions. Both magnitude and shape of the computed dissociative electron attachment cross sections are very similar to the available experimental data, even though we found the results to be very sensitive on the accuracy of the underlying methods. These encouraging results place the proposed methodology as a promising approach for studies on transient anions' dynamics of medium sized molecules.
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