Ammonium and Phosphonium Salts Containing Monoanionic Iron(II) Half-Sandwich Complexes [Fe(η5-Cp*)X2]− (X = Cl − I)

IF 3.1 4区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Inorganics Pub Date : 2023-11-17 DOI:10.3390/inorganics11110437

Julian Zinke, C. Bruhn, U. Siemeling

引用次数: 0

Abstract

Half-sandwich iron(II) dihalido complexes of the type [Fe(η5-Cp’)X2]− (Cp’ = C5H5 or substituted cyclopentadienyl) which are thermally stable at room temperature are extremely scarce, being limited to congeners containing the bulky C5H2-1,2,4-tBu3 ligand. We extended this to homologues [Fe(η5-Cp*)X2]− (X = Cl, Br, I) containing the particularly popular C5Me5 (Cp*) ligand. Corresponding ionic compounds ER4[Fe(η5-Cp*)X2] are easily accessible from FeX2, MCp* (M = Li, K) and a suitable halide source R4EX (E = N, P) in THF. Despite their high sensitivity towards air and moisture, the new compounds NnPr4[Fe(η5-Cp*)X2] (X = Cl, Br), NnPr4[Fe(η5-Cp*)BrCl], and PPh4[Fe(η5-Cp*)X2] (X = Cl, Br, I) were structurally characterised using single-crystal X-ray diffraction. NnPr4[Fe(η5-Cp*)Cl2] reacts readily with CO to afford [Fe(η5-Cp*)Cl(CO)2], indicating the synthetic potential of ER4[Fe(η5-Cp*)X2] in FeCp* half-sandwich chemistry.

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含单阴离子铁（II）半三明治络合物 [Fe(η5-Cp*)X2]- （X = Cl - I）的铵盐和鏻盐

在室温下具有热稳定性的[Fe(η5-Cp')X2]-（Cp'= C5H5 或取代的环戊二烯基）半夹心二卤化铁（II）配合物非常稀少，仅限于含有笨重的 C5H2-1,2,4-tBu3 配体的同系物。我们将其扩展到含有特别常用的 C5Me5（Cp*）配体的同系物[Fe(η5-Cp*)X2]-（X = Cl、Br、I）。相应的离子化合物 ER4[Fe(η5-Cp*)X2]很容易从四氢呋喃中的 FeX2、MCp*（M = Li、K）和合适的卤化物源 R4EX（E = N、P）中获得。尽管新化合物 NnPr4[Fe(η5-Cp*)X2]（X = Cl、Br）、NnPr4[Fe(η5-Cp*)BrCl]和 PPh4[Fe(η5-Cp*)X2]（X = Cl、Br、I）对空气和湿气的敏感性很高，但我们还是利用单晶 X 射线衍射对它们进行了结构表征。NnPr4[Fe(η5-Cp*)Cl2]很容易与 CO 反应，生成[Fe(η5-Cp*)Cl(CO)2]，这表明 ER4[Fe(η5-Cp*)X2] 在 FeCp* 半三明治化学中具有合成潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Inorganics Chemistry-Inorganic Chemistry

CiteScore

2.80

自引率

10.30%

发文量

193

审稿时长

6 weeks

期刊介绍： Inorganics is an open access journal that covers all aspects of inorganic chemistry research. Topics include but are not limited to: synthesis and characterization of inorganic compounds, complexes and materials structure and bonding in inorganic molecular and solid state compounds spectroscopic, magnetic, physical and chemical properties of inorganic compounds chemical reactivity, physical properties and applications of inorganic compounds and materials mechanisms of inorganic reactions organometallic compounds inorganic cluster chemistry heterogenous and homogeneous catalytic reactions promoted by inorganic compounds thermodynamics and kinetics of significant new and known inorganic compounds supramolecular systems and coordination polymers bio-inorganic chemistry and applications of inorganic compounds in biological systems and medicine environmental and sustainable energy applications of inorganic compounds and materials MD