The structural investigation of Ba4Bi3F17 |
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Authors: | EN Dombrovski AM Abakumov VA Dolgikh |
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Institution: | a Department of Chemistry, Moscow State University, Moscow 119992, Russiab EMAT, University of Antwerp (RUCA), Groenenborgerlaan 171, B-2020 Antwerp, Belgium |
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Abstract: | The anion-excess ordered fluorite-related phase Ba4Bi3F17 has been synthesized by a solid state reaction of BaF2 and BiF3 at 873 K. The crystal structure of Ba4Bi3F17 has been studied using electron diffraction and X-ray powder diffraction (a=11.2300(2) Å, c=20.7766(5) Å, S.G. , RI=0.020, RP=0.036). Interstitial fluorine atoms in the Ba4Bi3F17 structure are considered to form isolated cuboctahedral 8 : 12 : 1 clusters. The structural relationship between Ba4Bi3F17 and similar rare-earth-based phases is discussed. |
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Keywords: | Fluorides Ba4Bi3F17 Crystal structure Fluorite-like Cuboctahedral clusters |
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