New type of borophosphate anionic radical in the crystal structure of CsAl{sub 2}BP{sub 6}O{sub 20}
- Moscow State University, Faculty of Geology (Russian Federation)
The crystal structure of a new borophosphate CsAl{sub 2}BP{sub 6}O{sub 20} obtained by spontaneous crystallization in a multicomponent Cs–Cu–B–P–O system is determined by X-ray diffraction (a = 11.815(2), b = 10.042(2), and c = 26.630(4) Å; space group Pbca, Z = 8, V = 3159.5(10) Å{sup 3}; R{sub 1} = 0.043). A new type of borophosphate anionic 2D radical characterized by the lowest B: P = 1: 6 ratio and containing P{sub 3}O{sub 10} phosphate groups is found in the compound. A mixed-type anionic framework consisting of vertex-sharing BO{sub 4} and PO{sub 4} tetrahedra and AlO{sub 6} octahedra is distinguished in the structure. Large cesium atoms are located in the channels of the framework. Topological relationships are revealed between the structures of the CsAl{sub 3}(P{sub 3}O{sub 10}){sub 2} and CsAl{sub 2}BP{sub 6}O{sub 20} phases having different cationic compositions. These compounds can be considered quasi-polytypic phases.
- OSTI ID:
- 22645396
- Journal Information:
- Crystallography Reports, Vol. 61, Issue 5; Other Information: Copyright (c) 2016 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7745
- Country of Publication:
- United States
- Language:
- English
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