The literature concerning the identity of the oxychlorides of silicon has been in a somewhat confused state since the original work of Friedel and Ladenburg'and of Troost and Hautefeuille. 2 The former investigators first prepared hexachlorodisiloxane, Si2OCl6, by passing the vapors of silicon tetrachloride through a porcelain tube packed with fragments of white-hot feldspar. The latter experimenters claimed to have prepared a series of ...