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Hydrogen abstraction reactions from organosilicon compounds. The reactions of methyl, trifluoromethyl, and ethyl radicals with trichlorosilane

✍ Scribed by J. A. Kerr; A. Stephens; J. C. Young

Publisher: John Wiley and Sons
Year: 1969
Tongue: English
Weight: 421 KB
Volume: 1
Category: Article
ISSN: 0538-8066
DOI: 10.1002/kin.550010403

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✦ Synopsis

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 interpreted as indicating a polar effect in the reaction of CF, with SiHCI, and the similar reactivities of all three radicals appear to be due to the high exothermicity of the reactions.

The A Factors for the reactions are normal for hydrogen abstraction reactions of free radicals. The previous results of Kerr, Slater, and Young for CH, abstracting a n H atom from SiHCI, have been amended.

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