New type of borophosphate anionic radical in the crystal structure of CsAl2BP6O20

The crystal structure of a new borophosphate CsAl 2 BP 6 O 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 3 ; R 1 = 0.043). A new type...

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Bibliographic Details
Published in:Crystallography reports 2016-09, Vol.61 (5), p.786-795
Main Authors: Shvanskaya, L. V., Yakubovich, O. V., Belik, V. I.
Format: Article
Language:English
Subjects:
Atomic structure
Cesium
Cesium compounds
Crystal structure
Crystallization
Crystallography and Scattering Methods
Physics
Physics and Astronomy
Structure of Inorganic Compounds
Tetrahedra
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Summary:The crystal structure of a new borophosphate CsAl 2 BP 6 O 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 3 ; R 1 = 0.043). A new type of borophosphate anionic 2D radical characterized by the lowest B: P = 1: 6 ratio and containing P 3 O 10 phosphate groups is found in the compound. A mixed-type anionic framework consisting of vertex-sharing BO 4 and PO 4 tetrahedra and AlO 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 3 (P 3 O 10 ) 2 and CsAl 2 BP 6 O 20 phases having different cationic compositions. These compounds can be considered quasi-polytypic phases.
ISSN:1063-7745
1562-689X
DOI:10.1134/S1063774516050205