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Tetrafluoroalkyl silanes

The reactivity series ofRF depends on the nature ofX and is I > Br > Cl. In addition, the longer the RF group and the higher the steric hindrance, the lower the yield of l.23 Further, the more hindered RF, the more dimer produced. In order to prepare tetrafluoroalkyl silanes, such fluorinated magnesians must react with alkyl silane halides as follows ... [Pg.72]

SiF > SiCl > SiOR. However, it is not possible to synthesize tetrafluoroalkyl silanes as the maximum number of substitutions when X = Cl or F is three. [Pg.73]

Nevertheless it was possible to synthesize tetrafluoroalkyl silanes by combining the use of organometallic reactants and the hydrosilylation reaction. A few examples follow ... [Pg.74]

Thus, a large variety of tetrafluoroalkyl silanes were prepared with a wide range of thermal properties. The lowest Tg was obtained for 2 (Tg =-75°C) or for (C6F13C2H4)Si (C2H4CF3)[C2H4CF(CF3)2] T, = -67°C) or for 3... [Pg.74]

See other pages where Tetrafluoroalkyl silanes is mentioned: [Pg.79]    [Pg.74]    [Pg.79]    [Pg.74]    [Pg.79]    [Pg.79]    [Pg.74]    [Pg.79]    [Pg.74]    [Pg.79]   
See also in sourсe #XX -- [ Pg.72 , Pg.73 , Pg.78 ]

See also in sourсe #XX -- [ Pg.72 , Pg.73 , Pg.78 ]

See also in sourсe #XX -- [ Pg.72 , Pg.73 , Pg.78 ]



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