Rhett Kempe

April 3, 2012 - 7:00am
Wright Rieman Auditorium

CCB Colloquium presentation by Dr. Rhett Kempe, University of Bayreuth.

Host: Kai Hultzsch

Talk Title:  "Some Progress in Metal-Metal Bonding"

Abstract: Chemical bonding is of fundamental interest and metal-metal bonding is receiving some attention in this regard. Two topics - polar metal-metal linkages and quintuple bonding - are discussed during the talk. First, recent progress in synthesising polar metal-metal bonds namely unsupported bonds between rare earth atoms (RE) and transition metals (TM) is discussed [1]. Special focus is directed towards the use of such bond formation methodologies to generate highly reactive RE-TM clusters [2] (Figure below left). Secondly, recent progress in quintuple bonding is discussed [3] with a special focus on synthesising compounds with ultra-short metal-metal bonds [4] and understanding quintuple bonds by their reactivity [5] (Figure below right).

Key References:

[1] M. V. Butovskii, O. L. Tok, F. R. Wagner, R. Kempe, Angew. Chem., Int. Ed. 2008, 47, 6469.
[2] M. V. Butovskii, C. Doering, V. Bezugly,  F. R. Wagner, Y. Grin, R. Kempe, Nature Chem. 2010, 2, 741. M. V. Butovskii, O. L. Tok, V. Bezugly, F. R. Wagner, R. Kempe, Angew. Chem., Int. Ed. 2011, 50, 7695.
[3] F. R. Wagner, A. Noor, R. Kempe Nature Chem. 2009, 1, 529.
[4] A. Noor, F. R. Wagner, R. Kempe, Angew. Chem. Int. Ed. 2008, 47, 7246.
[5] A. Noor, G. Glatz, R. Müller, M. Kaupp, S. Demeshko, R. Kempe, Nature Chem. 2009, 1, 322. C. Schwarzmaier, A. Noor, G. Glatz, M. Zabel, A. Y. Timoshkin, B. M. Cossairt, C. C. Cummins, R. Kempe, M. Scheer Angew. Chem. Int. Ed. 2011, 50, 7283.