Journal
ORGANIC LETTERS
Volume 14, Issue 10, Pages 2484-2487Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ol300761q
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- NSERC of Canada
- FQRNT (Quebec)
- ICDD
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A new templating motif for the formation of [2]pseudorotaxanes is described in which T-shaped axles with a benzimidazolium core and aromatic substituents at the 2-, 4-, and 7-positions interact with [24]crown-8 ether wheels ([24]crown-8, dibenzo[24]crown-8, and dinaphtho[24]crown-8). The T-shape greatly enhances the association between axle and wheel when compared to simple imidazolium or benzimidazolium cations. A series of interpenetrated molecules are characterized by H-1 NMR spectroscopy and single crystal X-ray crystallography.
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