Synthetic, structural and reactivity studies of a boryl-ethynyl Silylene

The salt metathesis of a boryl-ethynyl lithium salt {[(HCDipN) 2 ]B-CC-Li} with a monochlorosilylene [LSi(:)Cl; L = PhC(N t Bu) 2 ] produced an isolable boryl-ethynyl silylene { 1 ; [(HCDipN) 2 ]B-C&z.tbd;C-Si(L)}. The Si( ii ) center in 1 possesses a nonbonding lone pair and forms a covalent bo...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2024-05, Vol.6 (45), p.5828-5831
Main Authors: Chen, Wenhao, Hu, Haisheng, Feng, Jie, Zhu, Lei, Wu, Di
Format: Article
Language:English
Subjects:
Covalent bonds
Lithium
Metathesis
NMR spectroscopy
Single crystals
Structural analysis
Substrates
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Summary:The salt metathesis of a boryl-ethynyl lithium salt {[(HCDipN) 2 ]B-CC-Li} with a monochlorosilylene [LSi(:)Cl; L = PhC(N t Bu) 2 ] produced an isolable boryl-ethynyl silylene { 1 ; [(HCDipN) 2 ]B-C&z.tbd;C-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. The salt metathesis of a boryl-ethynyl lithium salt {[(HCDipN) 2 ]B-CC-Li} with a monochlorosilylene [LSi(:)Cl; L = PhC(N t Bu) 2 ] gave rise to an isolable ethynyl silylene {[(HCDipN) 2 ]B-CC-Si(L)}, confirmed by X-ray diffraction analysis and DFT calculations.
ISSN:1359-7345
1364-548X
DOI:10.1039/d4cc00922c