The salt metathesis of a boryl-ethynyl lithium salt {[(HCDipN)₂]B-CC-Li} with a monochlorosilylene [LSi(:)Cl; L = PhC(N^tBu)₂] produced an isolable boryl-ethynyl silylene {1; [(HCDipN)₂]B–CC–Si(L)}. The Si(II) center in 1 possesses a nonbonding lone pair and forms a covalent bond with the ethynyl group. The characterization of 1 was carried out by multinuclear NMR spectroscopy, single-crystal X-ray structure analysis and DFT calculations. Additionally, a reactivity study of 1 was conducted towards oxygen-containing and aryl C–F substrates.

中文翻译：

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硼基乙炔基硅烯的合成、结构和反应性研究


硼基-乙炔基锂盐{[(HCDipN) ₂ ]B-CC-Li}与一氯亚甲硅基[LSi(:)Cl的盐复分解； L = PhC(N ^t Bu) ₂ ] 产生可分离的硼基-乙炔基亚甲硅基 {1; [(HCDipN) ₂ ]B–C C–Si(L)}。 1中的Si(II)中心具有非键合孤对电子，并与乙炔基形成共价键。通过多核NMR谱、单晶X射线结构分析和DFT计算对1进行了表征。此外，还对含氧和芳基 C-F 底物进行了 1 的反应性研究。