Dresden 2011 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 5: Collisions, Energy Transfer
MO 5.2: Vortrag
Montag, 14. März 2011, 14:45–15:00, MER 02
Reactive scattering of cold OH− ·(H2O)n with CH3I — •Rico Otto1, Jonathan Brox1, Sebastian Trippel1, Martin Stei2, Thorsten Best1, and Roland Wester2 — 1Physikalisches Institut, Universität Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg — 2Institut f. Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstr. 25/3, A-6020 Innsbruck
Chemical reactions in solution are exceedingly different from their
gas-phase counterparts [1]. Up to now the role of the solvent molecules is
not understood in detail.
We investigate the influence of microsolvation in the reaction OH−
·(H2O)n + CH3I by adding single water molecules to the
molecular anion. The combination of crossed beam imaging [2] with a
multipole radio frequency ion trap allows us to prepare the anion
water clusters in well defined initial states.
We present crossed beam imaging studies at low collision energies
between 0.2 - 2.5 eV for a different number of solvent water
molecules. New reaction channels arising from the water will be discussed.
C. K. Regan, S. L. Craig, J. I. Brauman, Science 295, 2245 (2002)
[2] J. Mikosch, S. Trippel, C. Eichhorn, R. Otto, U. Lourderaj, J. X. Zhang,
W. L. Hase, M. Weidemüller, R. Wester, Science 319, 183 (2008)