Triethylsilyl Perfluoro-Tetraphenylborate, [Et(3)Si][F(20)-BPh(4)], a widely used Non-Existent Compound.
Triethylsilyl Perfluoro-Tetraphenylborate, [Et(3)Si][F(20)-BPh(4)], a widely used Non-Existent Compound.
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DOI：
10.1021/om200636u
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发表时间：
2011-09-12
期刊：
影响因子：
2.8
通讯作者：
Reed CA
中科院分区：
文献类型：
--
作者：
Nava M;Reed CA
常用的三乙基硅基全氟四苯基硼酸盐[Et 3Si +][F20-BPh 4 −]被错误识别。如所制备的，阳离子是桥连的硅烷加合物[R3 Si-H-SiR 3 +]。在有利的情况下，它可以是三乙基硅离子Et 3Si+的有效来源，但在缺乏稳定碱的情况下，Et 3Si+的强亲电性分解了“惰性”F20-BPh 4 −抗衡离子。
The commonly used triethylsilyl per-fluoro-tetraphenylborate salt, [Et3Si+][F20-BPh4−], has been misidentified. As prepared, the cation is a hydride-bridged silane adduct [R3Si-H-SiR3+]. Under favorable circumstances it can be an effective source of the triethylsilylium ion Et3Si+ but in the absence of a stabilizing base the potent electrophilicity of Et3Si+ decomposes the “inert” F20-BPh4− counterion.