Louzikova, Anja and Range, Klaus-Jürgen (1996) High pressure synthesis and single-crystal structure refinement of calcium aurate(III), CaAu2O4. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES, 51 (5). pp. 747-750. ISSN 0932-0776, 1865-7117
Full text not available from this repository.Abstract
Single crystals of calcium aurate(III), CaAu2O4, were obtained by high-pressure treatment of a CaO/Au2O3/KO2 mixture at 40 kbar, 1200 degrees C in a modified Belt-type apparatus. The crystals are tetragonal, space group I4(1)/a, with a = 5.9868(7), c = 10.043(1) Angstrom, c/a = 1.678 and Z = 4. CaAu2O4 is isostructural with LaPd2O4, SrAU(2)O(4) and BaAu2O4. Its structure comprises square-planar AuO4 groups (< Au-O > = 2.007 which are stacked into columns along [100] and [010]. These columns are connected by shared corners forming a three-dimensional framework. The Ca ions are situated in tunnels created by the gold-oxygen partial structure. They are surrounded by eight oxygen atoms (< Ca-O > = 2.490 Angstrom) in a slightly distorted dodecahedron.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | calcium aurate(III); high-pressure synthesis; crystal structure |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie > Alumni or Retired Professors > Prof. Dr. Klaus-Jürgen Range |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 06 Jul 2023 09:50 |
| Last Modified: | 06 Jul 2023 09:50 |
| URI: | https://pred.uni-regensburg.de/id/eprint/51760 |
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