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A kinetic study of the gas phase reaction between trimethylsilane and methyl chloride

Authors
Journal
Journal of Organometallic Chemistry
0022-328X
Publisher
Elsevier
Publication Date
Volume
44
Issue
2
Identifiers
DOI: 10.1016/s0022-328x(00)82915-0

Abstract

Abstract The kinetics of the gas phase reaction between trimethylsilane and methyl chloride have been investigated between 429 and 494° in packed and unpacked quartz vessels. Methane and trimethylchlorosidane are the only products formed in substantial quantity, and the results are consistent with their bcing produced in a radical chain reaction propagated in the gas phase with heterogeneous initiation and termination. It is suggested that in the packed vessel initiation is by dissociative desorption of trimethylsilane from singly-occupied surface sites, but in the unpacked vessel a more complex initiation mechanism appears to operate, and it is tentatively suggested that methyl chloride is dissociatively adsorbed, the chlorine atom then reacts with adsorbed trimethylsilane at the surface, and a dimethylchiorosilane molecule and a methyl radical are finally desorbed into the gas phase.

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