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Dimethyldichlorosilane is a tetrahedral organosilicon compound with the formula Si(CH 3) 2 Cl 2. At room temperature it is a colorless liquid that readily reacts with water to form both linear and cyclic Si-O chains. Dimethyldichlorosilane is made on an industrial scale as the principal precursor to dimethylsilicone and polysilane compounds.
2 ((CH 3) 3 SiCl + H 2 O → [(CH 3) 3 Si] 2 O + 2 HCl. The analogous reaction of dimethyldichlorosilane gives siloxane polymers or rings: n (CH 3) 2 SiCl 2 + n H 2 O → [(CH 3) 2 SiO] n + 2n HCl. Many compounds containing Si-Cl bonds can be converted to hydrides using lithium aluminium hydride, This kind of conversion was demonstrated for the ...
Dichlorosilane was originally prepared by Stock and Somieski by the reaction of SiH 4 with hydrogen chloride. Dichlorosilane reacts with water vapor to initially give monomeric prosiloxane: SiH 2 Cl 2 + H 2 O → SiH 2 O + 2 HCl Monomeric polymerizes rapidly upon condensation or in solution. [3]
The chemical formula of PDMS is CH 3 [Si(CH 3) 2 O] n Si(CH 3) 3, where n is the number of repeating monomer [Si(CH 3) 2 O] units. [4] Industrial synthesis can begin from dimethyldichlorosilane and water by the following net reaction: n Si(CH 3) 2 Cl 2 + (n+1) H 2 O → HO[Si(CH 3) 2 O] n H + 2n HCl. The polymerization reaction evolves ...
2 CH 3 Cl + Si → (CH 3) 4−n SiCl n + other products. While this reaction is the standard in industrial silicone production and is nearly identical to the first direct synthesis of methyltrichlorosilane, the overall process is inefficient with respect to methyltrichlorosilane. [2]
Bis(trimethylsilyl) sulfide is the chemical compound with the formula ((CH 3) 3 Si) 2 S. Often abbreviated ( tms ) 2 S, this colourless, vile-smelling liquid is a useful aprotic source of "S 2− " in chemical synthesis.
The S(N(Si(CH 3) 3) 2) 2 reacts with the combination of SCl 2 and sulfuryl chloride (SO 2 Cl 2) to form S 4 N 4, trimethylsilyl chloride, and sulfur dioxide: [5] 2 S(N(Si(CH 3 ) 3 ) 2 ) 2 + 2 SCl 2 + 2 SO 2 Cl 2 → S 4 N 4 + 8 (CH 3 ) 3 SiCl + 2 SO 2
CH 2 Cl 2 + CH 3 Li → CHCl + CH 4 + LiCl Although DCM is a common solvent in organic chemistry laboratories and is commonly assumed to be inert, it does react with some amines and triazoles. [ 21 ] Tertiary amines can react with DCM to form quaternary chloromethyl chloride salts via the Menshutkin reaction . [ 22 ]