New unusual magnetic complexes: synthesis, electronic and magnetic properties

Antragsteller Professor Dr. Martin Knupfer
Fachliche Zuordnung Experimentelle Physik der kondensierten Materie
Förderung Förderung von 2013 bis 2019
Projektkennung Deutsche Forschungsgemeinschaft (DFG) - Projektnummer 213590445
 

Projektbeschreibung

This proposed interdisciplinary project ideally combines the expertise of the German partner in the physics/spectroscopy and the Russian partner in phosphorus and organometallic chemistry. The aim of the project is to create new advanced magnetic materials, using a new synthetic approach starting from non-magnetic transition metal precursors and novel non-innocent phosphorus ligands, which drastically expands the range of new materials. Preliminary joint studies demonstrate that such complexes of usually diamagnetic metal atoms exhibit paramagnetic properties. Their molecular structure reveals a significant metal-to-ligand charge transfer and redistribution of electron density in the ligand, which provides through-bond interaction between the metals centers. Unusual magnetic properties of such complexes and non-clear oxidation states of the metal atoms give a spur to understand the fundamental aspects of their electronic structure and magnetism. For this purpose we plan to apply spectroscopic methods (PES, NEXAFS, XMCD) to determine the electronic structure in detail. Further understanding of the electron density distribution will be achieved via X-ray precision experiments and theoretical calculations. The established magneto-structural correlations will provide the possibility of tuning magnetic properties via adjusting peripheral substituents.
DFG-Verfahren Sachbeihilfen
Internationaler Bezug Russische Föderation
Partnerorganisation Russian Foundation for Basic Research
Beteiligte Personen Professor Dr. Bernd Büchner; Dr. Olga Kataeva