Dresden 2011 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 36: Poster Session II (Metals; Nanostructures at surfaces; Surface or interface magnetism; Spin-Orbit Interaction at Surfaces; Electron and spin dynamics; Surface dynamics; Methods; Theory and computation of electronic structure)
O 36.3: Poster
Dienstag, 15. März 2011, 18:30–22:00, P4
Scanning tunneling microscopy study of asymmetric Pd pincer complexes on a Cu(111) Surface — •Shih-Hsin Chang1,4, Alessandro Scarfato2,3, Christian Christian Kleeberg3, Martin Bröring3, Germar Hoffmann1, and Roland Wiesendanger1 — 1Institute of Applied Physics and Microstructure Research Center Hamburg, University of Hamburg, Germany — 2Dipartimento di Fisica E.R. Caianiello, Università degli Studi di Salerno, Italy — 3Fachbereich Chemie, Philipps-Universität Marburg, Germany — 4Research Center for Applied Sciences, Academia Sinica, Taipei, Taiwan
The adsorption of asymmetric Pd pincer complexes on a Cu(111) surface was investigated by means of ultra-high vacuum scanning tunneling microscopy. The structural asymmetry is manifested in the observation of two chiral enantiomers. To enable an unambiguous identification of individual constituents, three closely related complexes with small modifications are investigated in parallel. Thereby, methyl substituents determine attractive molecule-molecule interaction. Depending on their distribution, dimerization and tetramerization can be observed.