Different fluoride anion sources and (trifluoromethyl)trimethylsilane: molecular structure of tris(dimethylamino)sulfonium bis(trifluoromethyl)trimethylsiliconate, the first isolated pentacoordinate silicon species with five Si–C bonds
作者:Alexander Kolomeitsev、Valery Movchun、Eduard Rusanov、German Bissky、Enno Lork、Gerd-Volker Röschenthaler、Peer Kirsch
DOI:10.1039/a901953g
日期:——
(Trifluoromethyl)trimethylsilane, CF3SiMe3 reacts with [(Me2N)3S]+[Me3SiF2]â, Q+Fâ and Q+[HF2]â (Q+ = Me4N+, [(Me2N)3C]+, [(Me2N)4P]+) at â70 to 50 °C to afford the first hypervalent silicon species, [(CF3)2SiMe3]â with five SiâC bonds (stable in monoglyme up to â10 °C) as the main reactive species whose molecular structure was determined by X-ray crystallography.
(三氟甲基)三甲基硅烷,CF3SiMe3 与 [(Me2N)3S]+[Me3SiF2]−、Q+F− 和 Q+[HF2]− 反应 (Q+ = Me4N+, [(Me2N)3C]+, [( Me2N)4P]+) 在 70 至 50 °C 下生成第一个超价硅物质,[(CF3)2SiMe3]-,具有 5 个 Si-C 键(在单甘醇二甲醚中稳定可达 10 °C)作为主要活性物质,其分子结构由X射线晶体学测定。