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Hydrothermal synthesis and crystal structure of SrAl2(PO4)2F2: A new three-dimensional framework with channels delimited by a helical anionic border

✍ Scribed by J.-M. Le Meins; G. Courbion

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
637 KB
Volume
35
Category
Article
ISSN
0992-4361

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✦ Synopsis

The new compound SrAI2(PO4)2F z has been synthesised by a hydrothermal method (700Β°C, 195 MPa, 24 h). The structure was determinated by X-ray diffraction on single crystal. SrAI2(PO4)2F 2 crystallises in the non-centrosyrnmetric space group P21212 J (NΒ°I9) with a = 12.026(1) A, b = 12.199(1) A, c = 4.666(1) A, V = 684.6(5) A 3 and Z = 4. Its structure is built up from comer-linkage between octahedral and tetrahedral units. The resulting tridimensional framework exhibits channels along [001] delimited by oxygen anions helically distributed. The Sr ~+ cations are inserted inside the channels.

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