Silanols

family of acid compounds

Trimethylsilanol (TMS) is an organosilicon compound with the formula . The Si centre bears three methyl groups and one hydroxyl group. It is a colourless volatile liquid.

Diphenylsilanediol, Ph2Si(OH)2, is a silanol. The tetrahedral molecule forms hydrogen-bonded columns in the solid state. It can be prepared by hydrolysis of diphenyldichlorosilane Ph2SiCl2. Diphenylsilanediol can act as an anticonvulsant, in a similar way to phenytoin. Although the compound is stable in normal conditions, the presence of basic impurities can accelerate the condensation of the silanol groups.

thumb|180 px|Structure of trimethylsilanol A silanol is a functional group in silicon chemistry with the connectivity Si–O–H. It is related to the hydroxy functional group (C–O–H) found in all alcohols. Silanols are often invoked as intermediates in organosilicon chemistry and silicate mineralogy. If a silanol contains one or more organic residues, it is an organosilanol.

thumb|Structure of trimethylsilanol.

Dimethylsilanediol or DMSD is an organosilicon compound with the chemical formula . It is a colorless crystalline solid. It belongs to the category of silanols. Molecule of dimethylsilanediol has tetrahedral molecular geometry, where two methyl and two hydroxyl groups are attached to the central silicon atom. Dimethylsilanediol is a silicon analog of unstable propane-2,2-diol , where the central C atom is replaced by Si atom.