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The carbonyl cluster compound [GeRu 6 (CO) 18 HI] is unique in regard to its structure and bonding with a GeRu 6 cluster core, a planar GeRu 4 HI unit, extensive multi-center bonding, and an aromatic ring current similar to benzene (9-10 nA T -1 ). The open-shell cluster core is a Ge-centered five-membered Ru 4 (Ru 2 ) ring with CO ligands and an additional H and I atom, each bridging two Ru atoms on opposite sides of the cluster core. The compound is prepared at 130 °C in a weakly-coordinating ionic liquid., (© 2024 The Authors. Advanced Science published by Wiley‐VCH GmbH.)

[SnI 8 {Fe(CO) 4 } 4 ][Al 2 Cl 7 ] 2 contains the [SnI 8 {Fe(CO) 4 } 4 ] 2+ cation with an unprecedented highly coordinated, bicapped SnI 8 prism. Given the eightfold coordination with the most voluminous stable halide, it is all the more surprising that this SnI 8 arrangement is surrounded only by fragile Fe(CO) 4 groups in a clip-like fashion. Inspite of a predominantly ionic bonding situation in [SnI 8 {Fe(CO) 4 } 4 ] 2+ , the I - ⋅⋅⋅I - distances are considerably shortened (down to 371 pm) and significantly less than the van der Waals distance (420 pm). The title compound is characterized by single-crystal structure analysis, spectroscopic methods (EDXS, FTIR, Raman, UV/Vis, Mössbauer), thermogravimetry, and density functional theory methods., (© 2019 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA.)

Microemulsions (MEs) are ideal for obtaining high-quality inorganic nanoparticles. As thermodynamically stable systems with a nanometer-sized droplet phase that serves as a nanoreactor, MEs have obvious advantages for the synthesis of nanoparticles. MEs also have disadvantages, such as their complexity as multicomponent systems, the low amount of obtainable nanoparticles, their limited thermal stability, the fact that hydrolyzable or oxidizable compounds are often excluded from synthesis, the partly elaborate separation of nanoparticles, as well as the removal of surface-adhered surfactants subsequent to synthesis. This Review presents some strategies to further expand the options of ME-based synthesis of inorganic nanoparticles. This comprises the crystallization of nanoparticles in "high-temperature MEs", the synthesis of hollow nanospheres, the use of hydrogen peroxide or liquid ammonia as the polar droplet phase, and the synthesis of base metals and nitrides in MEs., (© 2016 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.)

Show some metal: the first bimetallic adamantane-like cluster, [{Fe(CO)(3)}(4){SnI}(6)I(4)](2-), was prepared by an ionic-liquid-based synthesis. The valence states of iron and tin were verified based on bond-length considerations, FT-IR and (119)Sn Mössbauer spectroscopy, as well as with DFT calculations., (Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)

Ionic liquids are credited with a number of unusual properties. These include a low vapor pressure, a wide liquid-phase range, weakly coordinating properties, and a high thermal/chemical stability. These properties are certainly of great interest for inorganic synthesis and the creation of novel inorganic compounds. On the other hand, the synthesis repertoire for preparing inorganic compounds has always been broad, ranging from syntheses in solutions and melts to solid-state reactions, and from crystal growth in the gas phase to high-pressure syntheses. What new aspects can ionic liquids then add to the synthesis of inorganic compounds? This Minireview uses some early examples to show that the use of ionic liquids indeed provides access to unusual inorganic compounds., (Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)