in benzene (glovebox); addn. of a soln. of AlBr3 in C6H6 to a soln. of silicon compd. in C6H6 in vac. with stirring, sealing, heating to 40°C for 30min with shaking; centrifugation, decantation, evapn; elem. anal.;

1: sodium triethoxysilanolate T=180 - 190°C; 20 h; Thermolysis; 2: chloro-trimethyl-silane in pentane T=-35°C;

in n-heptane T=-40 - -30°C;

1: sodium triethoxysilanolate With ethanol in n-heptane T=40 - 50°C; 9 h; 2: chloro-trimethyl-silane in hexane