Cationic Stannylenes: In Situ Generation and NMR Spectroscopic Characterization
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https://figshare.com/articles/dataset/Cationic_Stannylenes_In_Situ_Generation_and_NMR_Spectroscopic_Characterization/4443020
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资源简介：
The reaction of MeNHC (MeNHC = 1,3,4,5-tetramethylimidazolylidene,
where NHC = N-heterocyclic carbene) adducts to organotin(II) hydrides
Ar*SnH and Ar′SnH [Ar* = 2,6-Trip2C6H3, where Trip = 2,4,6-triisopropylphenyl; Ar′ = 2,6-Mes2C6H3, where Mes = 2,4,6-trimethylphenyl)]
with Lewis acids such as B(C6F5)3 or [CPh3]+ allows the abstraction of hydride
and thus the generation of cationic, dicoordinate bis(σ-C)-substituted
stannylenes [ArSn(NHC)]+. The supposedly dicoordinate constitution
of this cationic stannylene was investigated by NMR spectroscopy and
further supported by density functional theory computations. For Ar′SnH(MeNHC), the generated cation was found to be inadequately sterically
encumbered, allowing the formation of an adduct, [Ar′(NHC)Sn–Sn(H)(NHC)Ar′]+, which can be described as the protonated bis(NHC) adduct
to the formal 1,2-distannyne.
创建时间：
2016-12-15
