Add time:08/05/2019         Source:sciencedirect.com

HEXACHLORODISILANE (cas 13465-77-5) decomposes according to the equation nSi2Cl6 = nSiCl4 + (SiCl2)n when heated with catalytic quantities of triphenylphosphine or triphenylarsine. No reaction occurs with tristrifluoromethylphosphine. Hexabromodisilane is similarly decomposed by trimethylamine. Hexachlorodisilane reacts with hydrogen chloride in presence of pyridine according to the equation Si2Cl6 + 2HCl = 2SiCl4 + H2. With excess of hydrogen bromide and hexachlorodisilane a mixture of hydrogen chloride and bromide is recovered. Trichlorosilane reacts with hydrogen chloride in presence of pyridine according to the equation SiHCl3 + HCl = SiCl4 + H2. Hexachlorodisilane reacts with methyl chloride in presence of triphenylphosphine to give a mixture of methyltrichlorosilane and silicon tetrachloride. When hexachlorodisilane and methyl bromide are heated together in presence of triphenylphosphine a mixture of methyl chloride and bromide is recovered.

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