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Dichlorosilane, or DCS as it is commonly known, is a chemical compound with the formula H 2 SiCl 2. In its major use, it is mixed with ammonia (NH 3 ) in LPCVD chambers to grow silicon nitride in semiconductor processing.
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 preparation of silane: SiCl 4 + LiAlH 4 → SiH 4 ...
The mechanism of the direct synthesis is not known. However, the copper catalyst is essential for the reaction to proceed. In addition to dimethyldichlorosilane, products of this reaction include CH 3 SiCl 3, CH 3 SiHCl 2, and (CH 3) 3 SiCl, which are separated from each other by fractional distillation. The yields and boiling points of these ...
Difluorosilane can be made by fluorinating dichlorosilane with antimony trifluoride. [2] [3] 3 SiH 2 Cl 2 + 2 SbF 3 → 3 SiH 2 F 2 + 2 SbCl 3. Some is also made in a reaction of silicon tetrafluoride with hydrogen. SiF 4 + 2 H 2 → SiH 2 F 2 + 2 HF. Traces of difluorosilane are made when coal is burnt. [4]
The silicone polymers are often made by reacting dimethyl dichlorosilane with water. [4] Linear dimethylpolysiloxane polymer reaction. Fillers such as acetic acid can provide a fast cure time, while oxides and nitrides can provide better thermal conductivity. Tack-free times are typically on the order of minutes, with cure times on the order of ...
Trichlorosilane is a reagent in the conversion of benzoic acids to toluene derivatives. In the first step of a two-pot reaction, the carboxylic acid is first converted to the trichlosilylbenzyl compound. In the second step, the benzylic silyl derivative is converted to the toluene derivative with base. [7]
When attached to certain functional groups in a reactant molecule, trimethylsilyl groups may also be used as temporary protecting groups during chemical synthesis or some other chemical reactions. In chromatography, derivitization of accessible silanol groups in a bonded stationary phase with trimethylsilyl groups is referred to as endcapping.
Chlorodimethylsilane, also called dimethylchlorosilane and abbreviated DMCS, is a chemical compound with the formula (CH 3) 2 SiHCl. It is a silane, with a silicon atom bonded to two methyl groups, a chlorine atom, and a hydrogen atom.