Unprecedented Addition of Tetrahydroborate to an Osmium–Carbon Triple Bond
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https://figshare.com/articles/dataset/Unprecedented_Addition_of_Tetrahydroborate_to_an_Osmium_Carbon_Triple_Bond/2285068
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资源简介：
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
