Hemilabile pincer-type hydride complexes of iridium

被引：51

作者：

Choualeb, Aldjia

Lough, Alan J.

Gusev, Dmitry G. ^{[1
]}

机构：

[1] Wilfrid Laurier Univ, Dept Chem, Waterloo, ON N2L 3C5, Canada

[2] Univ Toronto, Dept Chem, Toronto, ON M5S 3H6, Canada

来源：

ORGANOMETALLICS | 2007年 / 26卷 / 21期

关键词：

D O I：

10.1021/om700550x

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The ligand (Bu2PC2H4NHC2H4NEt2)-Bu-t (PNHN) was synthesized starting from 2-(diethylamino)ethyl chloride hydrochloride and ethanolamine. Reaction of PNHN with [IrCl(COE)(2)](2) under H-2 afforded the dihydride cis-IrH2Cl(kappa(3)-PNHN) (1) in excellent yield. Treatment of 1 with (BuOK)-Bu-t led to clean formation of the 16-electron amido complex IrH2(kappa(3)-PNN) (2). Hydrogenation of 2 in toluene or ethyl acetate produced the trihydride mer-IrH3(kappa(3)-PNHN) (3). This complex was unstable and dimerized to give [IrH2(kappa(2)-PNHN)](2)(mu-H)(2) (4) with uncoordinated NEt2 groups. The structures of 1 and 4 were established by X-ray crystallography. Complex 2 demonstrated good catalytic activity for transfer hydrogenation of acetophenone, cyclohexanone, and butanone.

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页码：5224 / 5229

页数：6

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