Fenton's reagent. III. Addition of hydroxyl radicals to acetylenes and redox reactions of vinyl radicals
โ Scribed by Walling, Cheves.; El-Taliawi, Gamil.
- Book ID
- 126843307
- Publisher
- American Chemical Society
- Year
- 1973
- Tongue
- English
- Weight
- 333 KB
- Volume
- 95
- Category
- Article
- ISSN
- 0002-7863
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๐ SIMILAR VOLUMES
The mun reaction products resulting from the addition of ~tomrc hydrogen to acetylene are shown to be ethylene, l&butadiene, and benzene\_ The mechankm mvolves chain reactions of the vinyl and butadienyl radrals, which regenemte atomic hydrogen\_ Some of the rate psrameters are estimated
Addition of metbyl radicals to ethylene and acetylene has been studwd by nb mitio molecular-orbital calculauons In agreemen! with expcrimenlal dam, we find that, although addition IO ethylene is charactenred by a lower activation energy. addition LO acetylene is faster due to the opposile and larger
The reactions have been studied by a mass-balance method involving the photolysis of small amounts of biacetyl in the presence of a large excess of isobutane containing a small proportion of the unsaturated substrate. The following Arrhenius parameters have been derived: Temperature Reaction E log A