M.Sc. Johannes Stephan

Joined the team in May 2021.

Graduated at TUM in 2022 under the guidance of Prof. Roland A. Fischer.

Room No.: 4037
Phone: +49 89 289 54131
E-mail: johannes.stephan[at]tum.de

Research Topic: Metal-Metal Cooperativity in Mixed Transition Metal/Group 13 Metal Complexes and Clusters

Combining two metals with differing polarities in a defined coordination environment may lead to intriguing reactivity patterns like C–C and C–H bond activation of catalytically relevant small molecules. Prevalently, such reactivity patterns cannot be realised with exclusively monometallic compounds.

My project focuses on the exploration of metal-metal cooperativity in complexes and (small) clusters featuring typically late transition metal (TM) and group 13 metal (E) atoms. In order to design such heterobimetallic systems systematically, the influence of e.g. the choice of the metals, the ligands and the presence of accessible reactive sites will be investigated. Potentially, guidelines to rationally construct TM/E-type complexes and clusters showing metal-metal cooperativity and hence interesting reactivity patterns might be developed in the course of this project.

Selected Publications

M. Muhr,* J. Stephan,* L. Staiger et al., Commun. Chem. 2024, 7, 29. Assignment of individual structures from intermetalloid nickel gallium cluster ensembles.

I. Antsiburov, M. Schütz, R. Bühler, M. Muhr, J. Stephan, C. Gemel, W. Klein, S. Kahlal, J.-Y. Saillard, R. A. Fischer,  Inorg. Chem. 2024, XXXX, XXX, XXX-XXX. All-Hydrocarbon-Ligated Superatomic Gold/Aluminum Clusters.

R. Bühler,* M. Muhr,* J. Stephan, R. A. Wolf, M. Schütz, C. Gemel, R. A. Fischer, Dalton Trans. 2023, 52, 10905-10910. Photochemically generated reactive sites at ruthenium/gallium complexes: catalysis vs. cluster growth.

J. Hornung,* M. Muhr,* M. Schütz, P. Heiß, J. Stephan, C. Jandl, C. Gemel, S. Kahlal, J.-Y. Saillard, R. A. Fischer, Inorg. Chem. 2023, 62, 29, 11381–11389. Metal–Metal Bonding in Late Transition-Metal [M2L5] Complexes: Exploring the Limits of the Isolobal Analogy between the CO and AlCp* Ligands.

C. Kaußler,* D. Wragg,* C. Schmidt, G. Moreno-Alcántar, C. Jandl, J. Stephan, R. A. Fischer, S. Leoni, A. Casini, R. Bonsignore, Inorg. Chem. 2022, 61, 20405−20423. “Dynamical Docking” of Cyclic Dinuclear Au(I) Bis-N-heterocyclic Complexes Facilitates Their Binding to G‑Quadruplexes.