Novel ambidentate ligand systems comprising dual functionality are continuously developed in our group. Particular interest in this class of ligands arises from the possibility to form di- or trinuclear complexes consisting of metal atoms arranged in close spatial proximity. Our main research activities in this area are focused on the organometallic and coordination chemistry of tris(pyrazolyl)methanides and -silanides, tailored ligands for multimetallic complexes, and the synthesis of di- and trinuclear transition metal complexes and their application in homogeneous catalysis (elucidation of cooperative effects within the framework of 3MET).
 J. Meyer, S. González-Gallardo, S. Hohnstein, D. Garnier, M. K. Armbruster, K. Fink, W. Klopper and F. Breher*, Chem. Eur. J. 2015, 21, 2905 – 2914.
 S. González-Gallardo, I. Kuzu, P. Oña-Burgos, T. Wolfer, C. Wang, K. W. Klinkhammer, W. Klopper, S. Bräse and F. Breher*, Organometallics 2014, 33, 941 – 951.
 F. Walz, E. Moos, D. Garnier, R. Köppe, C. E. Anson, and F. Breher*, Chem. Eur. J. 2017, 23, 1173 – 1186.
Fundamental studies of academic interest are pursued in the field of organometallic main group chemistry, in particular, group 14 element cluster compounds such as heavy [1.1.1]propellanes. Although numerous quantum chemical calculations have been performed for these and related systems, synthetically accessible and structurally characterised species are very rare; experimental studies on the reactivity of heavy propellanes are still at its infancy. Our goal is to better understand fundamental aspects of the bonding within these clusters and to relate this with their reactivity. The development of catenated systems and electronically related heterocycles and cages are also of interest.
Selected reviews and publications:
 T. Augenstein, F. Breher, Nachr. Chem. 2014, 62, 1169 – 1174.
 D. Nied and F. Breher, Chem. Soc. Rev. 2011, 40, 3455 – 3466.
 S. Styra, M. Radius, E. Moos, A. Bihlmeier, F. Breher, Chem. Eur. J. 2016, 22, 9598 – 9512.
 M. W. Löble, P. Oña-Burgos, I. Fernández, C. Apostolidis, A. Morgenstern, O. Walter, F. Bruchertseifer, P. Kaden, T. Vitova, J. Rothe, K. Dardenne, N. L. Banik, A. Geist, M. A. Denecke, and F. Breher*, Chem. Sci. 2013, 4, 3717 – 3724.
 P. Stock, E. Deck, S. Hohnstein, J. Korzekwa, K. Meyer, F. W. Heinemann, F. Breher*, and G. Hörner*, Inorg. Chem. 2016, 55, 5254 – 5265.
 T. Kruczynski, P. Henke, T. Augenstein, N. Arleth, F. Breher* and H. Schnöckel*, Chem. Commun. 2014, 50, 15677 – 15680.
 O. Mallow, M. A. Khanfar, M. Malischewski, P. Finke, M. Hesse, E. Lork, T. Augenstein, F. Breher, J. R. Harmer, N. V. Vasilieva, A. Zibarev, A. S. Bogomyakov, K. Seppelt and J. Beckmann*, Chem. Sci. 2015, 6, 497 – 504.
 F. Armbruster, T. Augenstein, P. Oña-Burgos, F. Breher, Chem. Eur. J. 2013, 19, 17899 – 17906.
 H. Braunschweig*, F. Breher*, C.-W. Chiu, D. Gamon, D. Nied, K. Radacki, Angew. Chem. 2010, 122, 9159 – 9162; Angew. Chem. Int. Ed. 2010, 49, 8975 – 8978.