Unprecedented Addition of Tetrahydroborate to an Osmium–Carbon Triple Bond
收藏Figshare2016-02-17 更新2026-04-29 收录
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https://figshare.com/articles/dataset/Unprecedented_Addition_of_Tetrahydroborate_to_an_Osmium_Carbon_Triple_Bond/2285068
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The complexes [OsHCl(CPh)(IPr)(PR3)]OTf (IPr = 1,3-bis(2,6-diisopropylphenyl)imidazolylidene; OTf = CF3SO3; PR3 = PiPr3 (1), PPh3 (2)) react with NaBH4 in tetrahydrofuran to give OsH2Cl(η2-H-BCH2Ph)(IPr)(PR3) (PR3 = PiPr3 (3), PPh3 (4)). The mechanism of addition has been studied by means of isotopic labeling experiments and DFT calculations. The results indicate that the boron ligand is generated by hydroboration of the OsC triple bond of 1 and 2 and subsequent B–H bond activation of the resulting alkylborane. The original hydride ligand does not participate in the hydroboration process. However, it plays a secondary role in the B–H bond activation.
创建时间：
2016-02-17
