Multicomponent Assembly of a Pyrazine-Pillared Coordination Cage That Selectively Binds Planar Guests by Intercalation

A prismlike cage composed of six end‐capped PtII ions, two panel‐like ligands, and three pyrazine pillars assembles quantitatively through the template effect of a planar aromatic guest (see space‐filling structure). The cage thus obtained is stable even when the template is removed. Other large aro...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2003-08, Vol.42 (33), p.3909-3913
Main Authors: Kumazawa, Kazuhisa, Biradha, Kumar, Kusukawa, Takahiro, Okano, Takashi, Fujita, Makoto
Format: Article
Language:English
Subjects:
cage compounds
molecular recognition
palladium
self-assembly
template synthesis
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Summary:A prismlike cage composed of six end‐capped PtII ions, two panel‐like ligands, and three pyrazine pillars assembles quantitatively through the template effect of a planar aromatic guest (see space‐filling structure). The cage thus obtained is stable even when the template is removed. Other large aromatic molecules are also strongly bound and a β‐diketone is shown to exist only in a planar enol form in the cage with the keto–enol tautomerization being almost completely suppressed.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.200351797