Synthese, Kristallstruktur und Reaktionswege von 2,2-Dimethyl-1,1,1,3,3,3-hexaphenyltrisilan

Article abstract of DOI:10.1016/0022-328X(95)05536-X

The syntheses of the trisilanes (X3Si)2SiMe2, X=H, F, Cl, Br, I, OMe, starting from (Ph3Si)2SiME2 are described.The reaction of 1,1,1,3,3,-hexaphenyl-2,2-dimethyltrisilane with triflic acid, followed by a treatment with LiF or reduction with LiAlH4, leads to the trisilanes (HPh2Si)2SiMe2, (H2PhSi)2SiMe2, HPh2SiSiMe2SiH2Ph, (FPh2Si)2SiMe2, (F2PhSi)2SiMe2 and FPh2SiSiMe2SiF2Ph.All compounds were characterized with 29Si-NMR and Infrared spectroscopy as well as elemental analyses. (Ph3Si)2SiMe2 was studied by crystal structure analysis.Keywords: Silicon; Trisilanes; 29Si-NMR spectroscopy; Crystal structure