A5012886740- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Inorganic Chemistry and Materials
- Organometallic Complex Synthesis and Catalysis
- Ionic liquids properties and applications
- Synthesis and characterization of novel inorganic/organometallic compounds
- Crystallography and molecular interactions
- Catalysis and Oxidation Reactions
- Magnetism in coordination complexes
- Metal-Organic Frameworks: Synthesis and Applications
- Perovskite Materials and Applications
- Crystal Structures and Properties
- Organometallic Compounds Synthesis and Characterization
- Polyoxometalates: Synthesis and Applications
- Organic and Molecular Conductors Research
- Photonic and Optical Devices
- Copper-based nanomaterials and applications
- Chemical Synthesis and Reactions
- Luminescence Properties of Advanced Materials
- Lanthanide and Transition Metal Complexes
- Inorganic Fluorides and Related Compounds
- Advanced Fiber Laser Technologies
- Crystal structures of chemical compounds
- Conducting polymers and applications
- Corporate Law and Human Rights
Karlsruhe Institute of Technology
2015-2024
Institute of Inorganic Chemistry of the Slovak Academy of Sciences
2016-2021
Karlsruhe University of Education
2014-2019
Bayer (Germany)
2015
Ionic liquids are credited with a number of unusual properties. These include low vapor pressure, wide liquid-phase range, weakly coordinating properties, and high thermal/chemical stability. properties certainly great interest for inorganic synthesis the creation novel compounds. On other hand, repertoire preparing compounds has always been broad, ranging from syntheses in solutions melts to solid-state reactions, crystal growth gas phase high-pressure syntheses. What new aspects can ionic...
We demonstrate frequency comb sources based on siliconorganic hybrid (SOH) electro-optic modulators.Frequency combs with line spacings of 25 GHz and 40 are generated, featuring flat-top spectra less than 2 dB power variations over up to 7 lines.The used for WDM data transmission at terabit/s rates distances 300 km.
The crown-ether coordination compounds ZnX2(18-crown-6), EuX2(18-crown-6) (X: Cl, Br, I), MnI2(18-crown-6), Mn3Cl6(18-crown-6)2, Mn3I6(18-crown-6)2, and Mn2I4(18-crown-6) are obtained by ionic-liquid-based synthesis. Whereas MX2(18-crown-6) (M: Zn, Eu) show conventional structural motives, exhibit unusual single MnX4 tetrahedra coordinated to the complex. Surprisingly, some outstanding photoluminescence. Thus, rare Zn2+-based luminescence is observed unexpectedly efficient for...
A mixed-metal framework Cu–Ru-BTC with the formula Cu<sub>2.75</sub>Ru<sub>0.25</sub>(BTC)<sub>2</sub>·<italic>x</italic>H<sub>2</sub>O was successfully synthesized. Partial substitution of Cu<sup>2+</sup> by Ru<sup>3+</sup> in paddlewheel structure proven using X-ray absorption spectroscopy.
Abstract Ionischen Flüssigkeiten wird eine Reihe an ungewöhnlichen Eigenschaften zugeschrieben. Hierzu zählen geringer Dampfdruck, weiter flüssiger Existenzbereich, schwach koordinierende Eigenschaften, hohe thermisch‐chemische Stabilität – die ohne Frage für anorganische Synthese und Herstellung neuartiger anorganischer Verbindungen von großem Interesse sind. Anderseits ist das Syntheserepertoire seit jeher breit reicht Synthesen in Lösungen Schmelzen bis zu Festkörperreaktionen der...
Various functionalized 4,4′-biphenlydicarboxylic acids were prepared and applied in the synthesis of single- mixed-linker DUT-5 frameworks. The NH<sub>2</sub>-containing materials used for post-synthetic modification.
Abstract The carbonyl cluster compound [GeRu 6 (CO) 18 HI] is unique in regard to its structure and bonding with a GeRu core, planar 4 HI unit, extensive multi‐center bonding, an aromatic ring current similar benzene (9‐10 nA T −1 ). open‐shell core Ge‐centered five‐membered Ru (Ru 2 ) CO ligands additional H I atom, each bridging two atoms on opposite sides of the core. prepared at 130 °C weakly‐coordinating ionic liquid.
Uniform Cu2Cl(OH)3 and Cu2(NO3)(OH)3 nanoparticles are firstly prepared characterized based on various analytical tools (i.e. DLS, SEM, XRD, FT-IR, UV-Vis, DTA-TG). Accordingly, exhibit mean diameters of 51 nm 37 nm, respectively. Both nanomaterials show a bright green colour with the maxima absorption at 505 (Cu2Cl(OH)3) 503 (Cu2(NO3)(OH)3). Thermally decompose below 600 °C 240 °C, respectively, to form CuO. In addition, as-prepared can be reduced copper metal room temperature. While...
GaSeCl5O is a new inorganic molecular compound prepared from SeO2, SeCl4, and GaCl3 at 50 °C in quantitative yield. The structure of the title described by GaCl3(OSeCl2) molecules with tetrahedrally coordinated Ga atom pseudo-tetrahedrally Se (including lone pair Se(IV)) that are bridged oxygen. crystallizes polar chiral space group P61, which rarely observed for structures. characterized X-ray analysis based on single crystals powder samples, thermogravimetry, infrared Raman spectroscopy as...
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 (119)Sn Mössbauer spectroscopy, as well with DFT calculations.
The germanium-iron cluster Ge12{Fe(CO)3}8(μ-I)4 was prepared by reacting GeI4 and Fe2(CO)9 in [BMIm]Cl/AlCl3 as ionic liquid (BMIm: 1-butyl-3-methylimidazolium). contains a Ge12Fe8 metal core consisting of central Ge4 rectangle, two Ge2 pairs, four single Ge atoms. These units are interconnected Fe atoms to real Ge-Fe cluster. According DFT calculations, Hund's localization criterion is fulfilled for the whole if we assume three different atomic charges on Ge4, Ge2, units.
[BMIm]2[{PbMn(CO)5)}6I8] (BMIm: 1-butyl-3-methylimidazolium) is obtained by ionic liquid mediated reaction of PbI2 and Mn2(CO)10. Central a cubelike (Pb6I8) unit containing nonfilled Pb6 octahedron. Each Pb this terminated on its outside Mn(CO)5, exhibiting Pb-Mn metal-to-metal bonding (280 pm). Structurally, the similar to well-known octahedral (M6Xn) cluster-type family (M = Zr, Nb, Ta, Mo, W; X Cl, Br, I). In contrast most cluster compounds, such as W6Br12 ([W6Br8]Br2/1Br4/2, according...
Ionic-liquid based synthesis results in the phosphorus interhalides [PBr<sub>4</sub>][IBr<sub>2</sub>] and [PBr<sub>4</sub>]<sub>2</sub>[I<sub>5</sub>Br<sub>7</sub>] whereof latter shows thermal halogen release of 96.8 wt% (≤300 °C).
[Pb{Mn(CO)5}3][AlCl4] containing a trigonal planar PbMn3 cluster was obtained by the reaction of PbCl2 and Mn2(CO)10 in ionic liquid [BMIm][AlCl4]. The title compound is composed [Pb{Mn(CO)5}3]+ carbonyl cations [AlCl4]- anions that are connected to infinite zig-zag chains. cation exhibits central with three equal Pb-Mn single bonds, resulting an almost equilateral triangle manganese atoms formal Pb+I its center. Such were identified for first time. In addition single-crystal structure...
Abstract [SnI 8 {Fe(CO) 4 } ][Al 2 Cl 7 ] contains the 2+ cation with an unprecedented highly coordinated, bicapped SnI prism. Given eightfold coordination most voluminous stable halide, it is all more surprising that this arrangement surrounded only by fragile Fe(CO) groups in a clip‐like fashion. Inspite of predominantly ionic bonding situation , I − ⋅⋅⋅I distances are considerably shortened (down to 371 pm) and significantly less than van der Waals distance (420 pm). The title compound...
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), compounds [XIm][FeI(CO)3(SnI3)2] are obtained as transparent, dark red crystals. According to single-crystal structure analysis, title crystallize monoclinically contain anionic carbonyl complex [FeI(CO)3(SnI3)2]− well [EMIm]+, [EHIm]+ or [PMIm]+ cations. The is composed of a Sn–Fe–Sn...
Dark red transparent crystals of [Co{1,4-C(6)H(4)(CN)(2)}(2){NTf(2)}(2)][SnI{Co(CO)(4)}(3)](2) are obtained by reacting SnI(4), Co(2)(CO)(8) and 1,4-C(6)H(4)(CN)(2) in the ionic liquid [EMIm][NTf(2)] (EMIm: 1-ethyl-3-methylimidazolium; NTf(2): bis(trifluoromethylsulfonyl)imide). According to X-ray structure analysis based on single crystals, title compound crystallizes a triclinic manner contains novel (2)(∞)[Co{1,4-C(6)H(4)(CN)(2)}(2){NTf(2)}(2)] coordination network. This infinite 2D...
Abstract A novel modification of potassium nitrate is obtained subsequent to solvothermal reaction and crystallization at reduced temperature from diethylformamid (DEF) as solvent. δ‐KNO 3 crystallizes with the monoclinic space group P 2 1 / c . Most intriguing coordination number oxygen expressed by Niggli notation δ‐K 8/8 [NO 4/4 O 4/2 ] that differs known modifications (α‐K 9/9 9/3 ], β‐K γ‐K ]). Moreover, stacking NO – anions differentiates KNO modifications. As only few crystals were...
Mikroemulsionen (ME) sind ideal, um hochwertige anorganische Nanopartikel zu erhalten. Als thermodynamisch stabile Systeme mit einer Phase aus Nanometer-großen Tröpfchen, die als Nanoreaktoren dienen, bieten sie für Nanopartikelsynthese eine Reihe an Vorteilen. ME haben aber auch Nachteile, z. B. ihre Komplexität Mehrkomponentensysteme, geringe erhältliche Nanopartikelmenge, begrenzte thermische Stabilität, der häufige Ausschluss hydrolysierbarer oder oxidierbarer Verbindungen von Synthese,...
Dark red and brick transparent crystals of FeI4{GeI3Fe(CO)3}2 (1) (GeI3)2Fe(CO)4 (2) were obtained by reacting GeI4 Fe2(CO)9 or Fe3(CO)12 in a mixture [BMIM]Cl AlCl3 as ionic liquid (BMIm = 1-butyl-3-methylimidazolium). According to X-ray structure analysis based on single crystals, the title compounds exhibit cluster units with Fe–Ge bonds. consists two GeI2I1/2-Fe(CO)3I2/2 that are interlinked distorted octahedral FeI6/2 group. GeI3 connected square planar Fe(CO)4 group linear Ge–Fe–Ge...