Acta Cryst. (2007). C63, i75-i76 [ doi:10.1107/S0108270107036864 ]
Abstract: In Sr(BF4)2, which is isomorphous with the previously published Ca(BF4)2, the metal atom possesses a coordination number of 8 with a square-antiprismatic environment. Each tetrafluoridoborate anion is bonded to four metal centers. In the barium derivative, the metal center, with symmetry 2/m, is surrounded by 14 F atoms. The B atom and two of the three independent F atoms occupy special positions with symmetry m. Each anion is connected to five Ba atoms. This structure differs significantly from an earlier published structure of Ba(BF4)2 [published as Ba2(BF4)4; Lin, Cheng, Chen & Huang (1998). Jiegon Huaxue, 17, 245]. The radial distribution functions for the present Ba(BF4)2 and earlier Ba2(BF4)4 structures differ significantly.
Formula: Ba(BF4)2 and Sr(BF4)2
 |   Structure factor file (CIF format) (17.1 kbytes) |
| Structure factor file (CIF format) (62.0 kbytes) |
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