Preparation of 1,2-tetramethyldichloro-disilane from hexamethyldisilane and methylchlorodisilane

摘要

An improved process for producing tetramethyldisilane by Lewis acid catalyzed redistribution of hexamethyldisilane with a crude mixture of methylchlorodisilane which comprises the distillation of the mixed redistributed product with collection of a middle distillate cut containing at least 95% pure tetramethyldichlorodisilane.