Abstract
New crownophanes containing 2,7-dioxyfluorenone and 4,4′-dioxystilbene fragments linked through di-, three, tetra-, and pentaethylene glycol linkers were synthesized. The formation of pseudorotaxanetype host-guest complexes in reactions of these crownophanes with 1,1′-dimethyl-4,4′-bipyridinium dication was detected by fast atom bombardment mass spectrometry, 1H NMR, and electron spectroscopy.
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