An Isolable NHC-Stabilized Silylene Radical Cation: Synthesis and Structural Characterization
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https://figshare.com/articles/dataset/An_Isolable_NHC_Stabilized_Silylene_Radical_Cation_Synthesis_and_Structural_Characterization/2536699
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资源简介：
The silyl-substituted silylene–NHC complex bis(tri-tert-butylsilyl)silylene–(1,3,4,5-tetramethylimidazol-2-ylidene)
[(tBu3Si)2Si:←NHCMe, 2] was synthesized and isolated as air- and
moisture-sensitive orange crystals by reductive debromination of the
dibromosilane (tBu3Si)2SiBr2 (1) with 2.0 equiv of KC8 in the presence of NHCMe. In addition, the silylene–NHC
complex 2 cleanly underwent one-electron oxidation with
1.0 equiv of Ph3C+·Ar4B– (Ar4B– = tetrakis[4-(tert-butyldimethylsilyl)-2,3,5,6-tetrafluorophenyl]borate)
in benzene to afford the NHC-stabilized silylene radical cation [(tBu3Si)2Si←NHCMe]•+·Ar4B– (3). The radical cation 3 was isolated
as air- and moisture-sensitive yellow crystals and structurally characterized
by X-ray crystallography and electron paramagnetic resonance spectroscopy,
which showed that 3 has a planar structure with a π-radical
nature.
创建时间：
2012-03-28
