Die Kristallstruktur von Ba13Al22Si10O66
Abstract
Single crystals of Ba13Al22Si10O66 were investigated by x-ray methods. The compound crystallizes in the hexagonal space group P63, with the unit-cell dimensions a = 9.955 ± 0.001 Å, c = 18.590 ± 0.005 Å. There is one formula unit in the unit cell. Three-dimensional Patterson and Fourier syntheses have been calculated out of 1697 observed Fhkl from which the positions of the atoms could be determined. By least-squares methods the structure has been refined to an R value of 0.087. The SiO4 and AlO4 tetrahedra form six- and three-membered rings respectively. The rings are not isolated but connected by other tetrahedra to a three-dimensional framework. The inter-atomic distances between metal and oxygen atoms indicate good order in the Si-Al distribution. The three-membered rings are formed by AlO4 tetrahedra, the six-membered rings by SiO4 and AlO4 tetrahedra alternatively.
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Articles in the same Issue
- The crystal structure of FeCoOBO3
- The crystal structure of synthetic zeolite Na-P 1, an isotype of gismondine
- Crystal structure of babingtonite
- The structures of the salt-bearing aluminosilicates, Species P and Q
- Über eine neue Tracht von WO3
- The structure of strontium dithionate tetrahydrate
- The crystal and molecular structure of naphtho[2,1-c]cinnoline
- Verfeinerung der Struktur von Azurit, Cu3(OH)2(CO3)2, durch Neutronenbeugung
- Die Kristallstruktur von Ba13Al22Si10O66
- Redetermination of the chromium position in ruby
- Determination of heavy atom positions by computer from the Patterson function through identification of non-Harker vectors
- Zur Darstellung und Raumgruppe des Caesium-Zinkazides Cs2Zn(N3)4
- The crystal data for the dinitrodialaninatocobaltates of K, Na and Ag
- 13. Diskussionstagung der Sektion für Kristallkunde der Deutschen Mineralogischen Gesellschaft
- The Warren Award
