Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 53, Issue 14, Pages 3739-3742Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201400626
Keywords
metallosupramolecular chemistry; palladium complexes; self-assembly; template effects; tetrafluoroborate
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Funding
- DFG [SFB 624]
- Academy of Finland [265328, 263256]
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An enantiomerically pure BINOL-based bis(3-pyridyl) ligand 1 assembles into a homochiral [Pd-4(1)(8)] complex upon coordination to tetravalent Pd-II ions. The formation of this aggregate is templated by two tetrafluoroborate counterions that are encapsulated in two peripheral cavities. The resulting structure is a new structural motif for this kind of metallosupramolecular assemblies that arranges the palladium ions in a distorted tetrahedral fashion and forces ligand 1 to adopt two different conformations. Both phenomena are unique and cause an overall three-dimensional structure that has another confined, chiral, and hydrophilic central cavity.
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