[XIm][FeI(CO)3(SnI3)2] (XIm: EMIm, EHIm, PMIm) containing a barbell-shaped FeSn2-carbonyl complex

被引：8

作者：

Wolf, Silke ^{[1
]}

Winter, Florian ^{[2
,3
]}

Poettgen, Rainer ^{[2
,3
]}

Middendorf, Nils ^{[4
]}

Klopper, Wim ^{[4
]}

Feldmann, Claus ^{[1
]}

机构：

[1] KIT, Inst Anorgan Chem, D-76131 Karlsruhe, Germany

[2] Univ Munster, Inst Anorgan & Analyt Chem, D-48149 Munster, Germany

[3] Univ Munster, NRW Grad Sch Chem, D-48149 Munster, Germany

[4] KIT, Inst Phys Chem, D-76131 Karlsruhe, Germany

来源：

DALTON TRANSACTIONS | 2012年 / 41卷 / 35期

关键词：

IRON CARBONYL CLUSTERS; CRYSTAL-STRUCTURE; MOLECULAR-STRUCTURES; REDUCTION CHEMISTRY; TIN; EXCHANGE; FE(CO)5; VALENT;

D O I：

10.1039/c2dt31253k

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

By reacting Fe(CO)(5) and SnI4 in the ionic liquids [XIm][NTf2] (XIm: 1-ethyl-3-methylimidazolium/EMIm, 1-ethyl-imidazolium/EHIm, 1-propyl-3-methylimidazolium/PMIm; NTf2: bistrifluoridomethansulfonimide), the compounds [XIm][FeI(CO)(3)(SnI3)(2)] are obtained as transparent, dark red crystals. According to single-crystal structure analysis, the title compounds crystallize monoclinically and contain the anionic carbonyl complex [FeI(CO)(3)(SnI3)(2)](-) as well as [EMIm](+), [EHIm](+) or [PMIm](+) cations. The anionic carbonyl is composed of a Sn-Fe-Sn barbell-shaped building unit with Fe-Sn distances of 252.0(1) pm. Herein, tin is coordinated distorted tetrahedrally by iodine; iron is coordinated pseudo-octahedrally by three carbonyl ligands, one iodine atom and two tin atoms. Bonding situation and valence state are investigated in detail for [EMIm][FeI(CO)(3)(SnI3)(2)] based on bond-lengths considerations, infrared spectroscopy, Mossbauer spectroscopy, density functional theory and DFT-based Mulliken population analysis. Hence, the formal oxidation state of the metal atoms can be concluded to Fe-+/- 0 and Sn3+.

引用

页码：10605 / 10611

页数：7

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