Crystal structure of the double rubidium dysprosium tungstate, RbDy(WO/sub 4/)/sub 2/
The crystal structure of monoclinic RbDy(WO/sub 4/)/sub 2/ (a=8.90, b=10.25, c=7.93 A, ..beta..=99degree, Z=4, Fedorov group C/sub 2//sub h/ /sup 5/=P2/sub 1//c) is determined from three-dimensional diffraction data (Weissenberg x-ray goniometer, Mo radiation) and refined by the method of least squares to R=0.13 by reference to approx.1700 E/sub h k l/. The principal part of the structure comprises discrete plane groups of four W polyhedra (W/sub 4/O/sub 16/)/sup 8 -/. The great scatter in the W-O distances (1.68--2.59 A) allows the coordination of W to be taken as either 5 or 6. The Rb and Dy atoms lie within eight-pointed polyhedra which form wide double bands parallel to the (001). The link between individual fragments in the structure is effected by virtue of common elements between the W octahedra and Dy polyhedra (common edges and face) and the Rb polyhedra (common vertices and edge).
- Research Organization:
- Institute of Inorganic Chemistry, Siberian Branch, Academy of Sciences of the USSR
- OSTI ID:
- 7224749
- Journal Information:
- Sov. Phys. - Crystallogr. (Engl. Transl.); (United States), Journal Name: Sov. Phys. - Crystallogr. (Engl. Transl.); (United States) Vol. 21:6; ISSN SPHCA
- Country of Publication:
- United States
- Language:
- English
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