Regensburg 2022 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 79: Surface Reactions and Heterogeneous Catalysis 3
O 79.8: Vortrag
Freitag, 9. September 2022, 12:30–12:45, H4
Differences in the Intermolecular Interaction of Electron-rich Phosphines on a Metal and a Salt Surface — •Vladimir Lykov1, Florenz Buss2, Milica Feldt3, Karina Morgenstern1, and Fabian Dielmann4 — 1Chair of Physical Chemistry I, Ruhr Universität Bochum, Germany — 2Institute for Inorganic and Analytical Chemistry, Westphalian Wilhelms University of Münster, Germany — 3Leibniz-Institut für Katalyse e.V. (LIKAT), Rostock, Germany — 4Department of General, Inorganic and Theoretical Chemistry, University of Innsbruck, Austria
Electron-rich phosphines are attractive as capture molecules, for instance, for carbon dioxide (CO2) and sulfur dioxide (SO2) by forming zwitterionic Lewis base adducts with them [1].
The main focus of this project is understanding the interaction behind this capturing in real space. For this purpose, we use a low-temperature (7 K) scanning tunneling microscope (STM). To understand the influence of the metal surface on this capture process, we compare the molecules adsorbed on Ag(100) to those on NaBr(100). As a first step, the different interaction of phosphines with the salt multilayers and with the metal was investigated by step-wise heating from 43 K to 135 K. The difference in intermolecular interaction on these surfaces will be discussed in this presentation.
[1] Buß F., Röthel M.B., Werra J.A., Rotering P., Wilm L.F.B., Daniliuc C.G., Löwe P., Dielmann F., Chem. Eur. J. 10.1002/chem.202104021 (2021)