A Supramolecular Sorting Hat: Stereocontrol in Metal-Ligand Self-Assembly by Complementary Hydrogen Bonding

A combination of self‐complementary hydrogen bonding and metal–ligand interactions allows stereocontrol in the self‐assembly of prochiral ligand scaffolds. A unique, non‐tetrahedral M4L6 structure is observed upon multicomponent self‐assembly of 2,7‐diaminofluorenol with 2‐formylpyridine and Fe(ClO4...

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Bibliographic Details
Published in:Angewandte Chemie (International ed.) 2014-09, Vol.53 (37), p.9832-9836
Main Authors: Young, Michael C., Holloway, Lauren R., Johnson, Amber M., Hooley, Richard J.
Format: Article
Language:English
Subjects:
Anions
Assembly
Cage
Chemical bonds
diastereoselectivity
Formations
Hydrogen bonding
ligand effects
Ligands
Scaffolds
Self assembly
Sorting
supramolecular chemistry
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Summary:A combination of self‐complementary hydrogen bonding and metal–ligand interactions allows stereocontrol in the self‐assembly of prochiral ligand scaffolds. A unique, non‐tetrahedral M4L6 structure is observed upon multicomponent self‐assembly of 2,7‐diaminofluorenol with 2‐formylpyridine and Fe(ClO4)2. The stereochemical outcome of the assembly is controlled by self‐complementary hydrogen bonding between both individual ligands and a suitably sized counterion as template. This hydrogen‐bonding‐mediated stereoselective metal–ligand assembly allows the controlled formation of nonsymmetric discrete cage structures from previously unexploited ligand scaffolds. Abracadabra: The stereoselective self‐assembly of an unsymmetrical metal–ligand cage can be controlled by self‐complementary hydrogen bonding between alcohol‐containing ligands as well as between ligands and suitable anion guests.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201405242