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A Cucurbituril‐Based Gyroscane: A New Supramolecular Form
Author(s) -
Day Anthony I.,
Blanch Rodney J.,
Arnold Alan P.,
Lorenzo Susan,
Lewis Gareth R.,
Dance Ian
Publication year - 2002
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/1521-3773(20020118)41:2<275::aid-anie275>3.0.co;2-m
Subject(s) - cucurbituril , supramolecular chemistry , library science , research council , nanotechnology , chemistry , materials science , computer science , philosophy , organic chemistry , linguistics , crystal structure , government (linguistics)
Concentric rotating and precessing macrocycles : The crystal structure of the inclusion complex of cucurbit[5]uril within cucurbit[10]uril shows the macrocycles to be concentric but not coaxial, and with a chloride ion at the center (see structure). Both rings rotate freely relative to each other in solution, as shown by NMR spectroscopy. The facile axial and precessive motion of the inner ring relative to the outer ring represents the molecular analogy of the gyroscope.