期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 55, 期 3, 页码 996-1000出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201509430
关键词
antiferromagnetic coupling; cobalt; oxidation; pi-cation radicals; porphyrin dimers
资金
- Science and Engineering Research Board (SERB), New Delhi
- Council of Scientific and Industrial Research (CSIR), New Delhi
- UGC
A highly oxidized cobalt porphyrin dimer is reported. Each cobalt(II) ion and porphyrin ring underwent 1e oxidation with iodine as the oxidant to give a 4e-oxidized cobalt(III) porphyrin -cation radical dimer. The bridging ethylene group allows for substantial conjugation of the porphyrin macrocycles, thus leading to a strong antiferromagnetic coupling between the -cation radicals and to stabilization of the singlet state. X-ray crystallography clearly showed that the complex may be considered as a real supramolecule rather than two cobalt(III) porphyrin -cation radicals that interact through space.
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