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Hexachlorodisilane : ウィキペディア英語版 | Hexachlorodisilane
Hexachlorodisilane is the inorganic compound with the chemical formula Si2Cl6,〔Simmler, W. "Silicon Compounds, Inorganic", ''Ullmann's Encyclopedia of Industrial Chemistry'', Weinheim: Wiley-VCH. 〕 It is a colourless liquid that fumes in moist air. It has specialty applications in as a reagent and as a volatile precursor to silicon metal. ==Structure and synthesis== The molecule adopts a structure like ethane, with a single Si-Si bond of length 0.233 nm.〔T.L. Cottrell, "The Strengths of Chemical Bonds," 2nd ed., Butterworths, London, 1958.〕 Hexachlorodisilane is produced in the chlorination of silicides such as e.g. calcium silicide. Idealized syntheses are as follows: :CaSi2 + 4 Cl2 → Si2Cl6 + CaCl2
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