Racemic and achiral alkyl aryl nitroxides were examined at various temperatures. The restricted rotation of the aminoxyl substituents was indicated both by the ฮฒ-proton coupling constants and by the inequivalence of the aromatic ortho protons. These results are interpreted by the presence of two dif
EPR and endor studies of cobaloxime(II)
โ Scribed by M. Baumgarten; W. Lubitz; C.J. Winscom
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- English
- Weight
- 622 KB
- Volume
- 133
- Category
- Article
- ISSN
- 0009-2614
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๐ SIMILAR VOLUMES
The ENDOR spectnun of the triphenylmethyl radical formed by heat treatment of triphenylmethane has been measured in solution at 131 "C. The derived hyperfine coupling constants of 2.770,2.556 and 1 . B G were used to simulate the extremely well resolved EPR spectnun. These coupling constants are in
## Abstract Several polycyclic aromatic radical cations produced in FriedelโCrafts alkylation reactions were studied by EPR and ENDOR methods, and the following were identified: 1,2,5,6โtetramethylanthracene, 2,3,6,7,9,10โhexamethylanthracene, 3,6,11,14โtetramethyldibenzo [__a,c__]triphenylene and
## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
The direct measurements of the principal thermal expansion coefficients were carried out for the specimens of pyrolytic graphite at temperatures between 50 and 55O"C, using an apparatus with high sensitivity. Resolving power of the apparatus was f 100 A. The c-axis thermal expansion coefficient was