Stuttgart 2012 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 21: Poster 3: Cluster, Collisions, Energy Transfer, Photochemistry, Spectroscopy in He-Droplets
MO 21.7: Poster
Donnerstag, 15. März 2012, 16:30–19:00, Poster.IV
Vibrational spectroscopy of isolated Single Molecule Magnets (SMM) of Dy and Mn/Ni — •Fabian Menges1, Yevgeniy Nosenko1, Christoph Riehn1, Peter Roesky2, and Gereon Niedner-Schatteburg1 — 1Fachbereich Chemie und Forschungszentrum Optimas, TU Kaiserslautern, 67663 Kaiserslautern, Germany — 2Institut für Anorganische Chemie, Karlsruher Institut für Technologie (KIT), 76131 Karlsruhe, Germany
A combination of mass spectrometric and spectroscopic techniques was applied to determine the structure of newly synthesized Single Molecule Magnets (SMM) containing transition metals and lanthanides. This methodology gives insight into the binding motifs leading to cooperative effects between the metal ions. We present here work in progress of IR-MPD spectroscopy, H/D exchange reactions, energy-resolved collision induced dissociation and theoretical studies (DFT) on DyMn2 and DyNi2 containing metal-organic clusters.
The grouping of high spin state transition metals (3d ions) with high magnetic anisotropic lanthanides (4f ions) could lead to single molecule magnetic behavior. However, the overall symmetry imposed by the molecular binding motifs can in fact play a key role in governing this behavior. The cooperativity of the metal centers depends on their spatial arrangement, i.e. the structure of the metal-organic cluster. Results for structural determination in the solid phase and the gas phase will be compared.