Reducing power of three-coordinate cobalt(I)

被引:47
作者
Ingleson, MJ [1 ]
Pink, M [1 ]
Caulton, KG [1 ]
机构
[1] Indiana Univ, Dept Chem, Bloomington, IN 47405 USA
关键词
D O I
10.1021/ja0607279
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Carbon monoxide adds easily to (PNP)Co, PNP = N(SiMe2CH2PtBu2)2, to give (PNP)Co(CO), whose νco value of 1885 cm-1 suggests much back-donation, and thus an easily oxidized Co(I) in (PNP)Co. However, Co(III) is inaccessible from (PNP)Co by oxidation with I2, the products being first (PNP)CoI, then the zwitterion [ItBu2PCH2SiMe2NSiMe2CH2PtBu2]CoI2. The potential two-electron oxidant N2CH(SiMe3) reacts with (PNP)Co to form a 1:1 "adduct", whose crystal structure is most consistent with oxidation of Co(I), but not fully to Co(III). Copyright © 2006 American Chemical Society.
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页码:4248 / 4249
页数:2
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