报告人: Reiner Anwander, Professor,

Department of Chemistry

Institute of Inorganic Chemistry

Eberhard Karls Universität Tübingen

Auf der Morgenstelle 18, 72076 Tübingen, Germany

时间：2018年6月4日（周一） 下午14:0 0—15:30

地点：伟德国际1946官网化学学院A区717报告厅.

Reiner Anwander studied chemistry at the Technische Universität München TUM, where he received his Diploma in 1989 and Dr. rer. nat. degree in 1992, both under the supervision of Wolfgang A. Herrmann. This was followed by postdoctoral research on organolanthanide chemistry with Bill Evans at the University of California, Irvine. Then, he spent three years at the Universität Stuttgart starting his habilitation on surface organometallic chemistry on nanoporous materials, which he completed in 2000 at TUM. From 2005 until 2008, he held a position (Heterogeneous Catalysis) at the University of Bergen, Norway. He joined the faculty of the Eberhard Karls Universität Tübingen, Germany, in 2009 and was a Fellow of the Japan Society for the Promotion of Science (JSPS) in 2012. His research interests include organometallic chemistry, nanostructured materials, and catalysis.. 

Abstract
During the past decade molecular rare-earth metal (Ln = Sc, Y, La - Lu) chemistry has witnessed several breakthroughs in the field of organometallic complexes containing multiple bonds to main-group elements. We and others have shown that organoaluminum-assisted hydrogen abstraction reactions can lead to methylidene and methine moieties. Utilization of bulky ancillary ligands such as highly substituted cyclopentadienyl and tris(pyrazolyl)borato ligands gave access to rare-earth metal variants of the Tebbe reagent. However, little is known about rare-earth metal complexes featuring higher alkylidene moieties with β-hydrogen atoms. Discrete [Ln=NR] imide complexes remained scarce for lack of efficient synthesis protocols. In 2010, Ln(III) imide chemistry was stirred by the successful isolation of the first scandium(III) terminal imide compound by Chen et al, exploiting a Lewis base-induced alkane elimination. We have embarked on organoaluminum-assisted syntheses of rare-earth metal imide complexes featuring even the large metal centers lanthanum and cerium. Recent progress in the areas of rare-earth metal alkylidene and imide chemistry will be reported.