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Reactions of Trichloromethyl Radicals with Organosilicon Compounds by J. A. Rice; J. J. Treacy; H. W. Sidebottom is a Chemistry article available to read on EtoBox.

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The photolysis of carbon tetrachloride in the presence of a number of organosilicon compounds has been investigated in the gas phase. The products obtained from the photolysis experiments were those expected from a chain reaction in which trichloromethyl radicals abstract hydrogen atoms from the organosilane. Arrhenius parameters for hydrogen atom transfer were determined relative to those for trichloromethyl radical combination. SiH log,,&L/mol s ) E, kcal/mol (CH,),SiH 8.7 t 0.3 7.9 t 0.5 (CH,),CISiH 8.7 t 0.3 9.1 t 0.5 CH,Cl,SiH 8.7 t 0.3 9.5 t 0.6 C1,SiH 8.6 t 0.3 9.7 t 0.5 (C,H,O),SiH 8.4 t 0.4 10.1 t 0.8 CC1,. + R,SiCH, -CHCl, + R3SiCH,. R,SiCH, log,&A,,(L/mol s) El, kcal/mol (CH,),SiCH, 9.0 t 0.3 12.9 t 0.6 (CH,),ClSiCH, 8.8 t 0.7 13.2 t 1.6 CH,Cl,SiCH, 8.9 t 0.2 14.1 t 0.6 Cl,SiCH, 8.7 t 0.3 14.2 t 0.6 CH,F,SiCH, 8.4 t 0.4 14.3 t 1.0 (CH,),BrSiCH3 8.9 ? 0.3 13.0 2 0.6 The activation energies for the reaction of methyl, trifluoromethyl, and trichloromethyl radicals with organosilicon compounds are compared and the results rationalized in terms of polar effects.

Who reads Reactions of Trichloromethyl Radicals with Organosilicon Compounds?

Author

J. A. Rice; J. J. Treacy; H. W. Sidebottom

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0538-8066)

Published

1984

Language

EN

Field

Chemistry (Physical Sciences)