Premium
Kinetic Selection in the Template‐Directed Self‐Assembly of [2]Catenanes
Author(s) -
Amabilino David B.,
Ashton Peter R.,
PérezGarcía Lluïsa,
Stoddart J. Fraser
Publication year - 1995
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199523781
Subject(s) - catenane , cyclophane , crown ether , template , pyridinium , covalent bond , chemistry , dynamic covalent chemistry , ether , stereochemistry , crystallography , materials science , supramolecular chemistry , nanotechnology , molecule , organic chemistry , ion , crystal structure
A kinetic template effect directs selection in competitive self‐assembly of tetracationic cyclophanes (represented by a circle) containing meta ‐ or para ‐linked 4,4′‐bipyridinium and/or bis(4‐pyridinium)ethylene units in the presence of competing crown ether templates (represented by a square or a triangle). The cyclophane fragments first couple covalently to form an intermediate (represented by an arc), and then the molecular recognition event strings the crown ether before the rate‐determining second covalent bond formation closes the ring.