Condensation of dichlorodimethylsilane in silent discharges

Summary

• 1. Dichlorodimethylsilane has been condensed under the action of silent discharges, and the composition of the condensate has been investigated. The main reaction products were chloro sila-hydrocarbons in which silicon and carbon atoms alternate in the main chain, which were formed by the condensation of two or three (CH₃)₂SiCl₂ molecules. The yield of condensation products was 68–70% on the amount of dichlorodimethylsilane that reacted.

• 2. The formation of the following compounds was proved: 2,2,4-trichloro-4-methyl-2,4-disilapentane, 2,2,5-trichloro-5-methyl-2,5-disilahexane, 2,2,5,5-tetrachloro-2,5-disilahexane, isomers of composition C₆H₁₅Cl₅Si₃ (probably 2,2,5,7,7-pentachloro-5-methyl-2,5,7-trisilaoctane and 2,2,5,5,7-pentachloro-7-methyl--2,5,7-trisilaoctane), and (chlorodimethylsilyl)bis(dichloromethylsily)methane.

• 3. The experiments proved that the main chemical processes occurring under the action of silent discharges are the creation of new Si-C and C-C bonds as the result of chain processes.