Tert-butyldimethylsilanol

Reaction of tert-butyldimethylsilanol 85 a or tert-butyldiphenylsilanol 85 b, which are obtained on cleavage of O-silyl compounds, with SOCI2 in CHCI3, affords the desired re-usable chlorosilanes 86a and 86b in 39 and 81% yield, respectively [109] (Scheme 2.16). 

A hemihydrate of tert-butyldimethylsilanol, Bu Me2Si0H H20, an important compound which is formed by hydrolytic cleavage of organosilyl protecting groups in organic syntheses, has a unique structure of the type shown in 4, with the participation of water molecules. The assembly is a chain polymer of self-assembled rhombohedra, in which two comers are oxygen atoms from the silanol [12]. 

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