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Trifluoro(phenyl)silane reacts with aliphatic alcohols under reflux. The reaction involves not only Si!F bond cleavage to form ethoxyfluoro(phenyl)silanes, but also C!Si bond cleavage to form benzene and alkoxyfluoro-and tetraalkoxysilanes. The formation of the latter products was proved by 19 F and 29 Si NMR spectroscopy and also by model disproportionation reactions of trifluoro(phenyl)silane with trimethoxy-(phenyl)-, tetramethoxy-, or tetraethoxysilanes.It has long been believed that alcoholysis of trifluoro(phenyl)silane involves no other processes than Si3F bond cleavage. Thus, as shown in [1], the reaction of trifluoro(phenyl)silane with ethanol results in exclusive formation of diethoxy(phenyl)silane, whereas the third fluorine atom remains completely intact.The potentiometric titration curve of trifluoro-(phenyl)silane in DMSO with 0.

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