Allosteric Binding of Halide Anions by a New Dimeric Interpenetrated Coordination Cage

Allosteric Binding of Halide Anions by a New Dimeric Interpenetrated Coordination Cage

Packed in like sardines: Three BF4− ions are packed into the three cavities of an interpenetrated dimer of a coordination cage (see scheme). While the inner BF4− ion is tightly bound inside the central position, the loosely bound outer anions can be replaced with halide anions by an allosteric bindi...

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Veröffentlicht in:Angewandte Chemie International Edition 2012-02, Vol.51 (9), p.2191-2194
Hauptverfasser: Freye, Sabrina, Hey, Jakob, Torras-Galán, Anna, Stalke, Dietmar, Herbst-Irmer, Regine, John, Michael, Clever, Guido H.
Format: Artikel
Sprache:eng
Schlagworte:
Affinity
anion recognition
Anions
Anions - chemistry
Barium Compounds - chemistry
Binding
Binding Sites
Cage
cage compounds
Chlorine - chemistry
Coordination Complexes - chemistry
Dimerization
Dimers
Fluorides - chemistry
Halides
Holes
host-guest systems
interpenetration
Models, Molecular
Pyridines - chemistry
Sardines
supramolecular chemistry
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Beschreibung
Zusammenfassung:Packed in like sardines: Three BF4− ions are packed into the three cavities of an interpenetrated dimer of a coordination cage (see scheme). While the inner BF4− ion is tightly bound inside the central position, the loosely bound outer anions can be replaced with halide anions by an allosteric binding mechanism and a concerted structural change. In particular, Cl− is bound with great affinity.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201107184