Bis(methvldiphenvlsilvl)-sulfane: Ausgangsverbindungen zur Darstellung von Sulfanen H2Sn und D2Sn mit definierter Kettenlänge / Bis(methyldiphenylsilyl)-sulfanes: Starting Compounds for the Preparation of Sulfanes H2Sn and D2Sn of Definite Chain Length

Abstract

The silylsulfanes (MePh2Si)2Sn, n = 2-5 (1a-d). have been prepared by reacting MePh2SiSNa (2) with iodine or chlorosulfanes SmCl2, m = 1−3. in toluene solution. Compounds 1a-d, which can unambiguously be characterized by their 1H and 29Si chemical shifts, are obtained pure when crystallized from solutions in pentane or pentane/CS2. They proved a convenient source for the generation of sulfanes H2Sn and deuterosulfanes D2Sn of definite chain length n = 2-5. Mixtures of the silylated sulfanes (MePh2Si)2Sn, n = 1−10. are formed on heating 2 with an excess of cyclooctasulfur.