This work was funded by the DFG IRTG 1422. We thank Dr. H. Frauendorf for the HRMS measurements and Prof. Dr. C. Griesinger (MPI Göttingen) for access to his NMR facilities.
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Communication
NMR-Based Structure Determination of an Intertwined Coordination Cage Resembling a Double Trefoil Knot†
Article first published online: 4 APR 2012
DOI: 10.1002/anie.201200611
Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Additional Information
How to Cite
Engelhard, D. M., Freye, S., Grohe, K., John, M. and Clever, G. H. (2012), NMR-Based Structure Determination of an Intertwined Coordination Cage Resembling a Double Trefoil Knot. Angew. Chem. Int. Ed., 51: 4747–4750. doi: 10.1002/anie.201200611
- †
Publication History
- Issue published online: 3 MAY 2012
- Article first published online: 4 APR 2012
- Manuscript Received: 21 JAN 2012
Funded by
- DFG. Grant Number: IRTG 1422
Keywords:
- host–guest systems;
- self-assembly;
- structure elucidation;
- supramolecular chemistry;
- trefoil knots
A knot that ties itself! The entanglement of six ligands coordinated to three PdII ions results in the quantitative formation of a walnut-shaped supramolecular cage. Each of the two hemispheres resembles a trefoil knot. The solution-state structure was elucidated using a combination of NMR experiments and calculated model structures. The final structure was selected from several models by topological analyses and encapsulation of chiral camphorsulfonate ions.