Silicon-dimethyl-dichloride

Livingston, R. L., and L. 0. Brockway The Molecular Structures of Dimethyl Silicon Dichloride, Methyl Silicon Trichloride and Trifluoro Silicon chloride. J. Amer. chem. Soc. 66, 94—98 (1944). 

The reaction is not restricted to phosphorus, silicon, and boron compounds the tetrameric (NSEt) is, for instance, formed from ethylamine hydrochloride and sulfur dichloride (49). Nor is it restricted to nitrogen compounds the very stable cyclic phosphinoborines are formed by elimination of hydrogen from the dimethyl-phosphine borine complex (17). 

Both Neish and Speakman Nature, 1945, 156, 176) and Wolsey and Alexander (Brit. Pat. 594901, 1947), showed that wool could be made unshrinkable by depositing upon it a silicon polymer. Alexander (J.S.D.C., 1950, 66, 349) considers that this is the only example of true masking of the scales with no spot welding involved. The process is described in detail by Alexander, Carter, and Earland J.S.D.C., 1949, 65, 107). The wool was treated with a substance of the general formula R.R. SiCl in an organic solvent such as carbon tetrachloride. The experiments were carried out with dimethyl silicon dichloride. The goods were immersed in the solution, hydroextracted, and then soaked in water at room temperature and dried, when the silicon compound was deposited on the surface of the fibres as an insoluble polymer. 

The effect has been studied391 of the nature of the stationary phase, and the solid support, the duration of stationary phase, the rate of flow and moisture content of the carrier gas, and the column temperature on the gas-liquid chromotographic separation of the components of a mixture obtained in the preparation of methylchlorosilanes including hydrogen chloride, methyl chloride, silicon tetrachloride, trimethylsilicon chloride, dimethyl silicon dichloride and methyl silicon trichloride. A column containing nitrobenzene on firebrick was used. 

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