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Zinc Complexes of Porphyrin‐Quinone Cyclophanes: Syntheses, Structures and Electron‐Transfer‐Related Properties
Author(s) -
Staab Heinz A.,
Anders Claus Krieger, Christine,
Rückemann Andreas
Publication year - 1994
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19941270133
Subject(s) - chemistry , quinone , electron transfer , cyclophane , porphyrin , redox , photochemistry , zinc , photoinduced electron transfer , solvent , stereochemistry , crystallography , crystal structure , organic chemistry
In order to increase the driving force for photoinduced electron‐transfer reactions of porphyrin‐quinone cyclophanes, the zinc complexes 3a‐e and 4a‐e were prepared from the corresponding cyclophanes of the 1 and 2 series. Electron‐transfer‐related properties like redox potentials and fluorescence spectra were determined for 3a‐e and 4a‐e . The X‐ray structure analysis of 4a indicates that for the very fast and solvent‐independent electron transfer in these systems a specific mechanism involving an interaction of a quinone carbonyl group with the zinc might be considered as an alternative to through‐space electron‐transfer.