NHC-Stabilized Silicon-Carbon Mixed Cumulene
NHC-Stabilized Silicon-Carbon Mixed Cumulene
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NHC 稳定硅碳混合积聚烯
DOI:
10.1021/jacs.6b06960
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发表时间:
2016
影响因子:
15
通讯作者:
Cui Chunming
中科院分区:
文献类型:
--
作者:
Wang Zhendong;Zhang Jianying;Li Jianfeng;Cui Chunming
The NHC-stabilized silicon–carbon mixed cumulene (Me3Si)2CSi(IPr)Si(IPr)C(SiMe3)2(3, IPr = 1,3-diisopropyl-4,5-dimethyl-imidazol-2-ylidene) has been prepared by reaction of Ar(SiMe3)NK with the NHC-stabilized silene (Me3Si)2CSi(SiMe3)Cl(IPr) (2) in toluene at low temperature via the elimination of trimethylsilyl and chloride groups from2. X-ray crystal analysis of3indicated the formal CSiSiC cumulene skeleton with the short Si–Si double bond distance of 2.1896(10) Å. DFT calculations disclosed its zwitterionic character. Reaction of3with diphenylacetylene resulted in the formation of a silatriafulvene with an exocyclic NHC-stabilized silene moiety.