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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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Main Authors: | , , , , , |
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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. |
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ISSN: | 1359-7345 1364-548X |
DOI: | 10.1039/c2cc17369g |