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Attempts to Synthesize Zwitterionic Donor‐Acceptor Cyclophanes: The Diastereomeric 12,15‐Bis(dimethylamino)‐[2](2,5)‐ p ‐benzoquinono[2]paracyclophanes
Author(s) -
Reimann Renate,
Staab Heinz A.
Publication year - 1978
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.197803741
Subject(s) - chemistry , diastereomer , acceptor , electron acceptor , cyclophane , spectral line , crystallography , absorption spectroscopy , stereochemistry , photochemistry , crystal structure , physics , quantum mechanics , condensed matter physics , astronomy
The wish to study the interaction between the radical electrons prompted synthesis of the donor‐acceptor cyclophanes (1) / (1a) and (2) / (2a) . The absorption spectra do not permit any decision between structures (1) or (1a) and (2) or (2a) ; the ESR and 1 H‐NMR spectra rule out zwitterions with paramagnetic ground states.