A bulky bis N-heterocyclic carbene complex of iron with coordination number of six: [CpFe(CO)(CH2(ImtBu)2)]I (where ImtBu=3-tert-butyl-1H-imidazol-1-yl-2 (3H)-ylidene)

被引：6

作者：

Kumar, Mukesh ^{[1
]}

DePasquale, Joseph ^{[1
]}

Zeller, Matthias ^{[2
]}

Papish, Elizabeth T. ^{[1
]}

机构：

[1] Drexel Univ, Dept Chem, Philadelphia, PA 19104 USA

[2] Youngstown State Univ, Dept Chem, Youngstown, OH 44555 USA

来源：

INORGANIC CHEMISTRY COMMUNICATIONS | 2013年 / 32卷

关键词：

Iron complexes; Half-sandwich complexes; N-heterocyclic carbene ligands; Carbonyl complexes; LIGANDS; DERIVATIVES; PALLADIUM; ALKYL;

D O I：

10.1016/j.inoche.2013.03.023

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The crystal structure of the title compound, [CpFe(CO)(CH2(Im(tBu))(2))]I (where Im(tBu) = 3-tert-butyl-1H-imidazol-1-yl-2(3H)-ylidene) (1), has been studied by X-ray diffraction. A piano-stool geometry is observed with binding of the Cp ring in three coordination sites, the chelating bis N-heterocyclic carbene (NHC) ligand in two sites, and the CO ligand. This molecule is a cation and the iodide provides a counter-anion that is not coordinated. This structure is similar to other bidentate chelating NHC complexes in the literature, but the combination of t-butyl groups in a pseudo-six-coordinate complex makes the title compound more sterically crowded than its literature analogs. This complex is remarkably stable, with attempts to displace the CO ligand proving unsuccessful and leading to no reaction or decomposition under forcing conditions. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：55 / 58

页数：4

共 25 条

[1] Chelated iridium(III) bis-carbene complexes as air-stable catalysts for transfer hydrogenation [J].