Niobium-centered C-C coupling of isonitriles

被引：22

作者：

Collazo, C ^{[1
]}

Rodewald, D ^{[1
]}

Schmidt, H ^{[1
]}

Rehder, D ^{[1
]}

机构：

[1] UNIV HAMBURG,INST ANORGAN & ANGEW CHEM,D-20146 HAMBURG,GERMANY

来源：

ORGANOMETALLICS | 1996年 / 15卷 / 22期

关键词：

D O I：

10.1021/om960510v

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The complexes [NbI2(CNtBu)(6)]I (1), [NbI2(CNtBu)(4)(tBuNHC=CNHtBu)]I (2), and cis-[NbI(CO)(2)(CNR)(2)dppe] (R = tBu (3a), Cy (3b)), have been prepared by oxidation of [Nb(CO)(6)(]-) with iodine in the presence of isonitrile either in a direct reaction (1 and 2) or, in the case of 3, by substitution in the intermediate [NbI(CO)(4)dppe]. While 1 and 3 are generated in absolute THF, 2 forms in moist THF. The X-ray structure analysis of 1 . THF, 2, and 3b toluene reveals trigonal-prismatic basic structures with the iodines capping tetragonal faces. 1 and 3b exhibit interatomic C ... C distances sufficiently close to enable C-C coupling. The relevance of the coupling product 2 for reductive C-C coupling mediated by low-valent niobium is discussed.

引用

页码：4884 / 4887

页数：4

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