J. M. Birchall, R. Haszeldine, M. Newlands
1971
Citations
0
Influential Citations
4
Citations
Journal
Journal of The Chemical Society A: Inorganic, Physical, Theoretical
Abstract
Methyldichlorosilane reacts with hexafluorobenzene under photochemical conditions to give methyl(pentafluorophenyl)chlorofluorosilane, which is readily converted into the corresponding difluorosilane. Silanes (R3SiH) add to pentafluorostyrene in the presence of hexachloroplatinic acid to give derivatives of 2-(pentafluorophenyl)ethylsilane, C6F5·CH2·CH2·SiR3(R3= Me3, MeCl2, or Cl3). The chlorosilanes (R3= MeCl2 or Cl3) are readily converted into oligomeric siloxanes, but high molecular weight polymers are not easily produced. The polymers with pendant 2-(pentafluorophenyl)ethyl groups are comparable in thermal stability with those which contain pendant 3,3,3-trifluoropropyl groups, and they are not affected by 5% aqueous hydrochloric acid or 5% aqueous sodium hydroxide under reflux.