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Size-Controlled Hapticity Switching in [Ln(C9H9)(C8H8)] Sandwiches |
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| Authors: | Maxime Tricoire Luca Münzfeld Dr. Jules Moutet Nolwenn Mahieu Léo La Droitte Dr. Eufemio Moreno-Pineda Dr. Frédéric Gendron Jeremy D. Hilgar Prof. Dr. Jeffrey D. Rinehart Prof. Dr. Mario Ruben Prof. Dr. Boris Le Guennic Prof. Dr. Olivier Cador Prof. Dr. Peter W. Roesky Prof. Grégory Nocton |
| Affiliation: | 1. Laboratoire de Chimie Moléculaire (LCM), CNRS, Ecole polytechnique, Institut Polytechnique de Paris Route de Saclay, 91120 Palaiseau, France;2. Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstraße 15, 76131 Karlsruhe, Germany;3. ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, Université de Rennes, CNRS, 35000 Rennes, France;4. Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany;5. Department of Chemistry and Biochemistry, University of California-San Diego La Jolla, CA, United-States;6. Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstraße 15, 76131 Karlsruhe, Germany Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany Centre Européen de Science Quantique (CESQ), Institut de Science et d'Ingénierie Supramoléculaires (ISIS), Université de Strasbourg, 8, Allée Gaspard Monge, F-67000 Strasbourg, France Institute of Quantum Materials and Technology (IQMT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany |
| Abstract: | Sandwich complexes of lanthanides have recently attracted a considerable amount of interest due to their applications as Single Molecule Magnet (SMM). Herein, a comprehensive series of heteroleptic lanthanide sandwich complexes ligated by the cyclononatetraenyl (Cnt) and the cyclooctatetraenyl (Cot) ligand [Ln(Cot)(Cnt)] (Ln=Tb, Dy, Er, Ho, Yb, and Lu) is reported. The coordination behavior of the Cnt ligand has been investigated along the series and shows different coordination patterns in the solid-state depending on the size of the corresponding lanthanide ion without altering its overall anisotropy. Besides the characterization in the solid state by single-crystal X-ray diffraction and in solution by 1H NMR, static magnetic studies and ab initio computational studies were performed. |
| Keywords: | cyclononatetraenyl lanthanides organometallics magnetism single molecule magnets |