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Phenothiazine–Bipyridinium Oligooxacyclophanes
Author(s) -
Petry Christoph,
Lang Martina,
Staab Heinz A.,
Bauer Helmut
Publication year - 1993
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.199317111
Subject(s) - cyclophane , phenothiazine , chemistry , dichloromethane , acetonitrile , acceptor , ion , photochemistry , crystallography , organic chemistry , crystal structure , physics , medicine , solvent , pharmacology , condensed matter physics
Surprisingly [11.11]cyclophane 1 ( n = 3) shows transannular nuclear Overhauser effects (NOES) in dichloromethane and acetonitrile between the protons of the bipyridinium and those of the phenothiazine unit, indicating an attractive donor‐acceptor interaction. In the [20.20]cyclophane 1 ( n = 6) complexation with barium ions facilitates the approach of the donor and acceptor units.