Heidelberg 2015 – scientific programme
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MO: Fachverband Molekülphysik
MO 21: Posters 4: Novelties in Molecular Physics
MO 21.11: Poster
Thursday, March 26, 2015, 17:00–19:00, C/Foyer
Ion molecule reaction dynamics of two center hydrocarbons — Eduardo Carrascosa1, •Jennifer Meyer1, Fredrik Lindén2, Martin Stei1, Martin Bawart1, Fabio Carelli1, Wolf Dietrich Geppert2, and Roland Wester1 — 1Institute for Ion Physics and Applied Physics, University of Innsbruck, 6020 Innsbruck, Austria — 2Department of Physics, Stockholm University, Stockholm, Sweden
We present recent results on the studies of the bimolecular substitution (SN2) reactions of halogenated hydrocarbons. These reactions feature rich dynamics and product distributions [1]. The reaction dynamics were recorded with our crossed beam velocity map imaging (VMI) spectrometer [2]. The studied model systems include the reactions of fluoride anions F− with methylcloride CH3Cl which allows us to study the effect which the leaving group has on the reaction dynamics and product distribution. Moreover using CN− as a nucleophile, we are able to study of isomer selective reaction channels. In the future, the ongoing work on the SN2 reactions of methylhalides will be extended to ethylhalide molecules. If the carbon chain is extended, the substitution reaction SN2 will be in competition with the elimination reaction E2. The dynamics and energy dependence of this competition of SN2 and E2 will be studied.
[1] J. Xie, R. Otto, J. Mikosch, J. Zhang, R. Wester, W. L. Hase, Acc. Chem. Res., 47, 2960 (2014)
[2] R. Wester, PCCP, 16, 396 (2014)