Synthesis and characterization of a dicationic dihydrogen complex of iridium with a bis-carbene ligand set

被引：68

作者：

Vogt, M ^{[1
]}

Pons, V ^{[1
]}

Heinekey, DM ^{[1
]}

机构：

[1] Univ Washington, Dept Chem, Seattle, WA 98195 USA

来源：

ORGANOMETALLICS | 2005年 / 24卷 / 08期

关键词：

D O I：

10.1021/om049045p

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Reaction of [Cp*lr(CH3CN)(3)] [PF6](2) with methylenebis(N-methylimidazolium) iodide in the presence of Et3N affords [CP*Ir(C-C)I]PF6 (1) (C-C = bis-carbene). The structure of complex 1 was confirmed by X-ray crystallography. The chloride analogue [Cp*Ir(C-C)C1]X (2) was similarly prepared from [Cp*Ir(CH3CN)(3)] [PF6]2 (X = PF6) or [Cp*IrCl2](2) (X = Cl) and methylenebis(N-methylimidazolium) chloride. Reaction of 2 (X = Cl) with Et3SiB(C6F5)(4) under hydrogen gas gives the dicationic dihydrogen complex [Cp*Ir(C-C)(H-2)](2+) (3). Complex 3 is identified as a dihydrogen complex based on T-1(min) = 37 ms for the hydride resonance (240 K, 750 MHz) and J(HD) = 23.5 Hz in the partially deuterated analogue.

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页码：1832 / 1836

页数：5

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