Reaction of 1-hydrosilatrane with halo- and triphenylhalomethanes

Silatranes and Their Tricyclic Analogs

“…A much lower reaction rate of 1-hydrosilatrane compared with triorganylsilanes seems to be due to the steric bulk of the silatranyl group that hinders a side attack at the silicon by the Ph 3 C C X ion pair 308 .…”

“…The use of iodo derivatives CH 2 I 2 or CHI 3 in reaction 66 results only in polymeric products 308 Both 49 and trialkylsilanes undergo exchange reactions with trimethylhalosilanes in the presence of quinoline to give 1-halosilatranes (equation 73) 16 . It is likely that steric hindrance is responsible for the lack of addition of 1-hydrosilatrane (49) to the multiple bond of monosubstituted alkenes and acetylenes in the presence of H 2 PtCl 6 or under UV irradiation 129,310 .…”

“…The reaction rate increases in going from chloro-to bromomethanes (k D 1.56 ð 10 3 M 1 s 1 at 24°C and 2.94 ð 10 3 M 1 s 1 at 20°C for the Cl and Br derivatives, respectively) 308 .…”

Radical anions of hypervalent silicon compounds: 1-substituted silatranes

“…[6][7][8][9][10] The probability for the formation of free silatranyl radicals Si(OCH 2 CH 2 ) 3 N and their participation in the chemical reactions, which are of preparative value, has been demonstrated. 11 Jouikov et al 12 studied the attachment of radicals Si(OCH 2 CH 2 ) 3 N and CH 2 CH 2 CH 2 Si(OCH 2 CH 2 ) 3 N to glassy carbon (GC) surfaces for obtaining silatranyl-modified GC surfaces. It was shown that such systems may be of interest for the design of electromechanical nanoscale actuators.…”