The radical anion of 1,2:9,10-dibenzo[2,2]paracyclophane (3) has been studied by ESR, ENDOR, and TRIPLE resonance spectroscopy under a variety of experimental conditions. The coupling constants of the eight protons in the deck-benzene rings, and of the four inner and four outer protons in the side-b
Rearrangements of Radical Cations of [2.2]Paracyclophanes and of a bridged [14]annulene to those of pyrenes: An ESR and ENDOR study
β Scribed by Fabian Gerson; Walter Huber; Thomas Wellauer
- Publisher
- John Wiley and Sons
- Year
- 1989
- Tongue
- German
- Weight
- 346 KB
- Volume
- 72
- Category
- Article
- ISSN
- 0018-019X
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π SIMILAR VOLUMES
In ESR spectroscopy, protons separated by 0,1,2,. .. sp3-hybridized C atoms from the nearest n-centre, are denoted a, p, y . . . Attempts to generate I t from 1 with AICI, or tris(p-bromophenyl)ammoniumyl-SbC16 in CH2C12 failed thus far [15]. Oxidation of 2 by SbClS in CH2C1, yielded a dimeric radic
A few preliminary results on lr, 2:, 3:, and 47 have been mentioned in [4].
## Abstract Several methods have been established for preparing cation radicals from 1,2,4,5βtetramethoxybenzene that allow highly resolved ESR spectra to be recorded. Precise values of the hyperfine coupling constants for the aromatic and methoxy protons have been obtained; the values are 0.2268Β±0