Collaborative Research Center 1333
Molecular Heterogeneous Catalysis in Confined Geometries
Tuning C6/C8 selectivity of Cr-catalyzed oligomerization of ethylene by exploiting confinement effects
– New project since July 2022 –
In this funding period, we will transfer the concept of confinement-governed olefin-metathesis-based macrocyclization to confinement-governed oligomerization of small molecules. Here, the main aim is to exploit confinement effects to selectively produce trimeric or tetrameric products from ethylene, i.e., 1-hexene or 1-octene, respectively. To this end we will use immobilized Cr catalysts that are robust and promising alternatives to existing Cr-complexes. We aim to exploit constrained geometries to selectively stabilize those transition geometries that lead to desired end products and we will leverage acidity, polarity and π-donating abilities of the support.
M. Amann, M. Drosou, T. Al Said, A. Allgaier, Y. Kutin, P. W. Antoni, J. J. Holstein, M. Kasanmascheff, J. van Slageren, A. Schnegg, D. A. Pantazis and M. M. Hansmann Angew. Chem. Int. Ed. 2025, e16032.
P. Probst, M. Lindemann, J. R. Bruckner, B. Atwi, D. Wang, F. R. Fischer, M. Högler, M. Bauer, N. Hansen, M. Dyballa and M. R. Buchmeiser J. Am. Chem. Soc. 2025, 147, 8741–8750.
K. M. Altus, Y. Shi, P. Probst, J. H. Heaton, M. R. Gyton, L. Lari, M. R. Buchmeiser, P. W. Dyer and A. S. Weller Angew. Chem. Int. Ed. 2025, 64, e202419923.
S. Bhattacharya, B. Atwi, K. Kundu, W. Frey and M. R. Buchmeiser Organometallics 2025, 44, 315−324.
M. Benz, O. Bunjaku, M. Nowakowski, A. Allgaier, I. Biswas, J. van Slageren, M. Bauer and D. P. Estes Catal. Sci. Technol., 2024, 14, 5854-5863.
P. Probst, J. Groos, D. Wang, A. Beck, K. Gugeler, J. Kästner, W. Frey and M. R. Buchmeiser J. Am. Chem. Soc. 2024, 146, 12, 8435–8446.
F. Ziegler, J. R. Bruckner, M. Nowakowski, M. Bauer, P. Probst, B. Atwi, M. R. Buchmeiser ChemCatChem, 2023,15 (21), e202300871.
E. L. Goldstein, F. Ziegler, A.-K. Beurer, Y. Traa, J. R. Bruckner, M. R. Buchmeiser ChemCatChem 2022,14, e202201008.
