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Communication between Components in Metal‐Directed Assemblies of Oriented Calix[6]arene‐Based Pseudorotaxanes and Rotaxanes
Author(s) -
Arduini Arturo,
Bussolati Rocco,
Masseroni Daniele,
Royal Guy,
Secchi Andrea
Publication year - 2012
Publication title -
european journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 1434-193X
DOI - 10.1002/ejoc.201101597
Subject(s) - terpyridine , calixarene , counterion , metal , chemistry , ligand (biochemistry) , polymer chemistry , zinc , supramolecular chemistry , stereochemistry , crystallography , ion , molecule , organic chemistry , crystal structure , receptor , biochemistry
Oriented calix[6]arene‐based pseudorotaxanes and rotaxanes where the axial component bears a terpyridine ligand as a stopper positioned at the upper rim of the calixarene have been synthesized. The binding ability of the terpyridine unit present in the axle toward zinc salts is affected by the presence of the wheel, its distance with respect to the calix[6]arene upper rim, and the nature of the counterion of the zinc salt employed. Metal coordination at the terpyridine unit changes the electrochemical behavior of the 4,4′‐bipyridinium unit of the axle inside the wheel in both the pseudorotaxanes and rotaxanes.