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CO Oxidation Catalyzed by Perovskites: The Role of Crystallographic Distortions Highlighted by Systematic Experiments and Artificial Intelligence.
Angew Chem Int Ed Engl
October 2024
Inorganic Chemistry Department, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany.
The identification of key materials' parameters correlated with the performance can accelerate the development of heterogeneous catalysts and unveil the relevant underlying physical processes. However, the analysis of correlations is often hindered by inconsistent data. Besides, nontrivial, yet unknown relationships may be important, and the intricacy of the various processes may be significant.
View Article and Find Full Text PDFNaBSi: A Prototype Silico-boride with Closo (B) Clusters.
J Am Chem Soc
September 2024
Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, 01187 Dresden, Germany.
The compound NaBSi was synthesized under high-pressure, high-temperature conditions at pressures ranging from 6 to 9.5 GPa and temperatures from 1070 to 1270 K before quenching to room temperature followed by slow decompression. The crystal structure was determined from microcrystals using precession-assisted electron diffraction tomography, validated by dynamical refinement and full-profile refinements using optimized coordinates from quantum chemical calculations (space group 3̅, Pearson symbol 30, = 5.
View Article and Find Full Text PDFSpectro-electrochemical study of iron and ruthenium bis-terpyridine complexes with methyl viologen-like subunits as models for supramolecular polymers.
Dalton Trans
August 2024
Chemische Technologie der Materialsynthese, Julius-Maximilians-Universität Würzburg, Röntgenring 11, 97070 Würzburg, Germany.
Metallo-supramolecular polyelectrolytes (MEPE) have a variety of attractive properties concerning electrochromism, spin-crossover, rheology, and cell differentiation. Previous studies suggest that these polynuclear structures can be regarded as an assembly of individual subunits and mononuclear complexes can act as models. In this study, we synthesize a monotopic and a ditopic terpyridine ligand with pyridinium units as well as the corresponding iron and ruthenium MEPEs and their mononuclear counterparts.
View Article and Find Full Text PDFStructurally diverse zinc(II) complexes containing tripodal tetradentate phenoxido-amines with promising antiproliferative effects.
Dalton Trans
July 2024
Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University, Šlechtitelů 27, CZ-779 00 Olomouc, Czech Republic.
Article Synopsis
- The study synthesized and characterized various zinc(II) complexes with unique tripodal tetradentate phenolic-amines, revealing different structural geometries such as distorted octahedral and trigonal-bipyramidal forms.
- Cytotoxicity tests against human cancer cell lines showed these complexes generally had higher cytotoxicity than the reference drug cisplatin, especially complex 6, which had IC values ranging from 2.4 to 4.5 μM.
- Further biological evaluations on selected complexes indicated they caused substantial cell cycle arrest in A2780 cells and exhibited antioxidant properties, but had limited effects on inducing apoptosis and other cellular processes due to their low uptake by the cancer cells.
On Chemical Bonding in -GaRh and Its Effect on Structural Organization and Thermoelectric Behavior.
Inorg Chem
July 2024
Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Str. 40, 01187 Dresden, Germany.
In the course of systematic studies of intermetallic compounds GaTM (TM─transition metal), the compound GaRh is synthesized by direct reaction of the elements at 700 °C. The material obtained is characterized as a high-temperature modification of GaRh. Powder and single-crystal X-ray diffraction analyses reveal tetragonal symmetry (space group 4/, No.
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