Different fluoride anion sources and (trifluoromethyl)trimethylsilane: molecular structure of tris(dimethylamino)sulfonium bis(trifluoromethyl)trimethylsiliconate, the first isolated pentacoordinate silicon species with fiveSi-C bonds
A. Kolomeitsev et al., Different fluoride anion sources and (trifluoromethyl)trimethylsilane: molecular structure of tris(dimethylamino)sulfonium bis(trifluoromethyl)trimethylsiliconate, the first isolated pentacoordinate silicon species with fiveSi-C bonds, CHEM COMMUN, (11), 1999, pp. 1017-1018
(Trifluoromethyl)trimethylsilane, CF3SiMe3 reacts with [(Me2N)(3)S](+)[Me3S
iF2](-), Q(+)F(-) and Q(+)[HF2](-)(Q(+) = Me4N+, [(Me2N)(3)C](+), [(Me2N)(4
)P](+)) at -70 to 50 degrees C to afford the first hypervalent silicon spec
ies, [(CF3)(2)SiMe3](-) with five Si-C bonds (stable in monoglyme up to -10
degrees C) as the main reactive species whose molecular structure was dete
rmined by X-ray crystallography.