Electron spin resonance studies of amorphous and crystallized residues derived from pyrolysis of pre-ceramic polymers
โ Scribed by M. R Mucalo; D. G Mcgavin; N. B Milestone
- Book ID
- 110374033
- Publisher
- Springer
- Year
- 1997
- Tongue
- English
- Weight
- 259 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0022-2461
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๐ SIMILAR VOLUMES
Electron spin resonance (ESR) and electron nuclear double resonance (ENDOR) measurements were performed for the cation radicals obtained from the model compounds of c~-, #-, 3'and 6-tocopherol (vitamin E) by oxidizing the tocopherol precursors in an AICI3-CHaCI a solution. The proton hyperfine coupl
Free radicals generated from a-and/3-ionyl bromides gave well resolved ESR spectra, but retinyl bromide and chloride gave only broad signals. Delocalised radicals were also spectrosopically observed on hydrogen abstraction from a-ionane, a-ionyltrimethylsilylether and buten-3-ynyl-2,6,6-trimethyl-2-