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Cooperative Ion–Ion Interactions in the Formation of Interpenetrated Molecules
Author(s) -
Hoffart Dennis J.,
Tiburcio Jorge,
de la Torre Ana,
Knight Lisa K.,
Loeb Stephen J.
Publication year - 2007
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/anie.200703019
Subject(s) - chemistry , cationic polymerization , molecule , pyridinium , ion , sulfonate , crown ether , ether , counterion , ionic bonding , inorganic chemistry , polymer chemistry , organic chemistry , sodium
Anionic wheels for cationic axles : Significant electrostatic ion–ion interactions dramatically increase the stability of interpenetrated molecules. In highly polar solvents, formation of [2]pseudorotaxanes is observed, in which crown ether wheels (see picture, red) having anionic sulfonate groups counter the pyridinium cations of the axle (blue).