Arrhenius parameters have been determined for the hydrogen-abstraction reactions: R + SiHCI, + RH + SiCl, CF, 323-46 1 5.98 & 0.06 11.77 f 0.03 8.50 CH, 333-443 4.30 f 0.08 10.83 & 0.04 8.48 C,H, 314-413 5.32 & 0.07 11.54 f 0.04 8.63 7 - l h e trend in activation energies ECH, < E c ~H , < ECF, is
Hydrogen abstraction from trichlorosilane by the trichloromethyl and 1,1-dichlorotrifluoroethyl radicals
β Scribed by B. N. Ormson; W. D. Perrymore; M. L. White
- Publisher
- John Wiley and Sons
- Year
- 1977
- Tongue
- English
- Weight
- 297 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0538-8066
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β¦ Synopsis
Abstract
The Arrhenius parameters for the reactions
equation image
and
equation image
have been measured. Reaction (2a) was generated and studied by the photolysis of tetrachloromethane in the presence of trichlorosilane and reaction(2b) by the photolysis of 1,1,1,βtrichlorotrifluoroethane in the presence of trichlorosilane.
The measured data are given by the expressions
.
π SIMILAR VOLUMES
The reaction of CF, radicals with NH, has been studied over a wide temperature range 298-673 K, using the photolysis and the thermal decomposition of CF,I as the free radical source. It was found that the reaction could not be explained in terms of a simple mechanism CZFG in the whole temperature
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Hydrogen abstraction by 1-phenylethyl radicals (RH) from phenylmethyl-carbinol (HROH) and benzyl alcohol (H2R'OH) has been studied in the liquid phase at 120Β°C. 1-Phenylethyl radicals have been generated by thermal decomposition of azo-bis-lphenyl ethane and the formation of ethylbenzene (RH2), acet
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