A series of experiments is discussed which, it has been claimed, demonstrate that hmdered methyl groilps exist at room temperature as relatively long-lived proton spin symmetry species. It is concluded that this concept lacks a theoretical foundation, conflicts with the model of random hopping reone
โฆ LIBER โฆ
Existence of spin symmetry species in reorienting methyl groups at high temperatures
โ Scribed by S. Emid
- Publisher
- Elsevier Science
- Year
- 1981
- Tongue
- English
- Weight
- 519 KB
- Volume
- 80
- Category
- Article
- ISSN
- 0009-2614
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As part of a study of organosulphur compounds in heavy oil sands, the interaction of thiophene (1) and tetrahydrothiophene (10) with aqueous solutions of Group VIIIB metal species at 20&24o"C has been \_ investigated. Thiophene was the more reactive and the greatest degree of reaction was observed