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Selective guest recognition by a self-assembled paramagnetic cage complexElectronic supplementary information (ESI) available: additional figures of crystal structure and NMR spectra; CIF for the crystal structure. CCDC 855597. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c2cc17369g

A cubic cage complex assembled from twelve bis-bidentate ligands and eight Co( ii ) ions provides a cavity that selectively recognises and binds coumarin in MeCN solution. The cage portals are large enough to allow guest exchange, but small enough to provide a kinetic trap; the cage paramagnetism fa...

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Bibliographic Details
Main Authors: Turega, Simon, Whitehead, Martina, Hall, Benjamin R, Haddow, Mairi F, Hunter, Christopher A, Ward, Michael D
Format: Article
Language:English
Online Access:Get full text
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Summary:A cubic cage complex assembled from twelve bis-bidentate ligands and eight Co( ii ) ions provides a cavity that selectively recognises and binds coumarin in MeCN solution. The cage portals are large enough to allow guest exchange, but small enough to provide a kinetic trap; the cage paramagnetism facilitates detailed NMR analysis. An octanuclear cubic Co( ii ) coordination cage selectively binds coumarin over many other potential guests of similar shape and size; the cage paramagnetism facilitates detailed NMR analysis which shows the guest is bound quickly but released slowly leading to slow exchange.
ISSN:1359-7345
1364-548X
DOI:10.1039/c2cc17369g