NHC 稳定双(苯硫基)锡的合成与表征

Aynura Mammadova, Clemens Bruhn, Rudolf Pietschnig
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引用次数: 0

摘要

将两个当量的 ((CH3)3Si)2C(C6H5)SLi-3THF 与 SnCl2-IPr (IPr=:C[N(Diip)C(H)]2, Diip= 2,6 i-(CH3)2CH(C6H5) )反应,导致有机锂成分破碎,得到 IPr-Sn(SPh)2,即化合物 3。后一种化合物是由 Ph-SSi(CH3)3进一步制备的,而从 Ph-SLi 开始则观察到 Sn(II) 物种比例失调。斯坦尼烯加合物 3 的光谱特征和结构通过单晶 X 射线衍射 (SCXRD) 进行了研究。在正式加入盐酸时,3 中的碳烯供体可被氯取代,从而产生离子型锡烯加合物 3a IPr+[SnCl(SPh)2]-,其结构也通过 SCXRD 进行了研究。
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Synthesis and characterization of NHC stabilized bis(phenylsulfanyl)stannylene
Reaction of two equivalents of ((CH3)3Si)2C(C6H5)SLi·3THF with SnCl2·IPr (IPr=:C[N(Diip)C(H)]2, Diip= 2,6 i‐(CH3)2CH(C6H5) led to fragmentation of the organolithium component and gave IPr·Sn(SPh)2, compound 3. The latter compound has been further prepared from Ph‐SSi(CH3)3 whereas disproportionation of the Sn(II) species was observed when starting from Ph‐SLi. Stannylene adduct 3 has been characterized spectroscopically and its structure was explored with single crystal X‐ray diffraction (SCXRD). The carbene donor in 3 can be displaced by chloride upon formal HCl addition giving rise to the ionic stannylene adduct 3a IPr+[SnCl(SPh)2]‐, the structure of which was investigated with SCXRD as well.
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