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101.
Julia A. Rusanova Eduard B. Rusanov Konstantin V. Domasevitch 《Acta Crystallographica. Section C, Structural Chemistry》2010,66(8):m207-m210
The title compound, {[U(C12H14O4)O2(H2O)]·H2O}n, is the first actinide complex featuring adamantanecarboxylate ligands. The metal ion possesses a pentagonal–bipyramidal UO7 coordination involving two axial oxide ligands [U—O = 1.732 (5) and 1.764 (5) Å] and five equatorial O atoms [U—O = 2.259 (5)–2.494 (4) Å] of aqua and carboxylate ligands. The latter display pseudo‐chelating and bridging coordination modes of the carboxylate groups that are responsible for the generation of the centrosymmetric discrete uranium–carboxylate [UO2(μ‐RCOO)2UO2] dimers [U...U = 5.5130 (5) Å] and their connection into one‐dimensional chains. Hydrogen bonding involving two coordinated and two solvent water molecules [O...O = 2.719 (7)–2.872 (7) Å] yields centrosymmetric (H2O)4 ensembles and provides noncovalent linkage between the coordination chains to generate a three‐dimensional network structure. 相似文献
102.
Amrutha Prabodh Yichuan Wang Stephan Sinn Paolo Albertini Christian Spies Eduard Spuling Liu-Pan Yang Wei Jiang Stefan Brse Frank Biedermann 《Chemical science》2021,12(27):9420
Fluorescence-detected circular dichroism (FDCD) spectroscopy is applied for the first time to supramolecular host–guest and host–protein systems and compared to the more known electronic circular dichroism (ECD). We find that FDCD can be an excellent choice for common supramolecular applications, e.g. for the detection and chirality sensing of chiral organic analytes, as well as for reaction monitoring. Our comprehensive investigations demonstrate that FDCD can be conducted in favorable circumstances at much lower concentrations than ECD measurements, even in chromophoric and auto-emissive biofluids such as blood serum, overcoming the sensitivity limitation of absorbance-based chiroptical spectroscopy. Besides, the combined use of FDCD and ECD can provide additional valuable information about the system, e.g. the chemical identity of an analyte or hidden aggregation phenomena. We believe that simultaneous FDCD- and ECD-based chiroptical characterization of emissive supramolecular systems will be of general benefit for characterizing fluorescent, chiral supramolecular systems due to the higher information content obtained by their combined use.Fluorescence-detected circular dichroism (FDCD) spectroscopy is applied for the first time to supramolecular host–guest and host–protein systems and compared to the more known electronic circular dichroism (ECD). 相似文献
103.
104.
Eduard Weyr 《Monatshefte für Mathematik》1891,2(1):351-412
Ohne Zusammenfassung 相似文献
105.
Eduard A. Stefanescu 《Cellulose (London, England)》2010,17(3):617-626
In this contribution, the morphology of ethylcellulose (EC) microspheres prepared with a room-temperature spray-drying technique
is examined as a function of solution concentration, nozzle-to-target distance, and choice of solvent. Additionally, to determine
the morphology of EC microspheres in the presence of an aqueous encapsulated material, a series of encapsulation measurements
was conducted using hydrogen peroxide solution as the core component. It was observed that highly concentrated EC solutions
lead to the formation of tail-like fibers adjacent to the sprayed microcapsules because of the high viscosity of solutions.
Furthermore, when the solutions are sprayed from relatively short nozzle-to-target distances, porous EC films are formed on
the target surface along with the EC microspheres. Three nozzle-to-target distances were tested (38, 69, and 115 cm), and
the optimal one was found to be 115 cm. To determine how and to what extent the solvent used in room-temperature spray-drying
experiments affects the morphology of resultant microspheres, EC was dissolved in either acetone or dichloromethane (DCM),
and sprayed from the resultant solutions. While microcapsules prepared from the EC-in-DCM system exhibit even, but porous
wall surfaces, microspheres prepared from the EC-in-acetone solution display irregular, but cavity-free wall-surfaces. Finally,
as opposed to the pure EC capsules, the ones containing H2O2 solution exhibit very smooth wall surfaces; this effect was attributed to the plasticizing effect that the aqueous solution
has on the ethylcellulose macromolecules. 相似文献
106.
We establish the asymptotic limit of the compressible Navier–Stokes system in the regime of low Mach and high Reynolds number on unbounded spatial domains with slip boundary condition. The result holds in the class of suitable weak solutions satisfying a relative entropy inequality. 相似文献
107.
108.
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110.
Eduard Spiegler 《Monatshefte für Chemie / Chemical Monthly》1884,5(1):203-207
Ohne ZusammenfassungEs sei mir an. dieser Stelle noch gestattet, meinem hochverehrten Lehrer Herrn Prof. Dr. V. Meyer für die mir bei der Ausführung dieser Untersuchungen in so reichlichem Masse erwiesene hilfreiche Theilnahme und Unterstützung meinen herzlichsten Dank auszusprechen. 相似文献