Wolf Silke, Egeberg Alexander, Treptow Jens, Feldmann Claus
Institut für Anorganische Chemie, Karlsruhe Institute of Technology (KIT), Engesserstraße 15, 76131, Karlsruhe, Germany.
ChemistryOpen. 2021 Feb;10(2):171-180. doi: 10.1002/open.202000254. Epub 2020 Nov 23.
Nine Ge-Fe carbonyl cluster compounds are prepared via ionic liquids-based synthesis. This includes the novel compounds [EMIm][Fe(CO) I(GeI )], [EHIm][Fe(CO) I(GeI )], [BMIm][GeI {Fe(CO) } (μ-I)][AlCl ] , [GeI {Fe(CO) } (μ-I)][Fe(AlBr ) ], [BMIm] [(FeI ) {Fe(CO) I(GeI ) } ], and [EHIm][Fe(CO) (GeI ) Fe(CO) GeI ] as well as the previously reported compounds (Fe(CO) (GeI ) , FeI {GeI Fe(CO) } , and Ge {Fe(CO) } (μ-I) (EMIm: 1-ethyl-3-methylimidazolium, EHIm: 1-ethylimidazolium, BMIm: 1-butyl-3-methylimidazolium). With this series of compounds, a comparison of synthesis conditions and structural features is possible and, for instance, allows correlating the composition and structure of the respective Ge-Fe carbonyl cluster compounds with the type and acidity of the ionic liquid. With [EMIm][{GeI } Fe(CO) I], moreover, we can exemplarily show the thermal decomposition as a single-source precursor in the ionic liquid, resulting in bimetallic Ge-Fe nanoparticles with small size and narrow size distribution (7.0±1.4 nm).
通过基于离子液体的合成方法制备了九种锗 - 铁羰基簇化合物。这包括新型化合物[EMIm][Fe(CO)I(GeI)]、[EHIm][Fe(CO)I(GeI)]、[BMIm][GeI{Fe(CO)}(μ - I)][AlCl]、[GeI{Fe(CO)}(μ - I)][Fe(AlBr)]、[BMIm][(FeI){Fe(CO)I(GeI)}]和[EHIm][Fe(CO)(GeI)Fe(CO)GeI]，以及先前报道的化合物(Fe(CO)(GeI)、FeI{GeIFe(CO)}和Ge{Fe(CO)}(μ - I)（EMIm：1 - 乙基 - 3 - 甲基咪唑鎓，EHIm：1 - 乙基咪唑鎓，BMIm：1 - 丁基 - 3 - 甲基咪唑鎓）。对于这一系列化合物，可以比较合成条件和结构特征，例如，能够将各个锗 - 铁羰基簇化合物的组成和结构与离子液体的类型和酸度相关联。此外，对于[EMIm][{GeI}Fe(CO)I]，我们可以示例性地展示其作为离子液体中单源前驱体的热分解过程，从而得到尺寸小且尺寸分布窄（7.0±1.4 nm）的双金属锗 - 铁纳米颗粒。
