Crystal structure for \mathrm{Sr}_{2} \mathrm{CoSbO}_{6}, at room temperature, in the R \overline{3} m and R \overline{3} space groups. The atomic positions in the R \overline{3} m space group are: \mathrm{Sb} 1 / \mathrm{Co} 2(3 \mathrm{ b}: 0,0,1 / 2), \mathrm{Co} 1 / \mathrm{Sb} 2(3 \mathrm{a}: 0,0,0), \mathrm{Sr}(6 \mathrm{c}: 0,0, z), \mathrm{O} 1(18 \mathrm{ h}: x,-x, z). The atomic positions in the R \overline{3} space group are: \mathrm{Sb} 1 / \mathrm{Co} 2(3 \mathrm{ b}: 0,0,1 / 2), \mathrm{Co} 1 / \mathrm{Sb} 2(3 \mathrm{a}: 0,0,0), Sr (6c: 0,0, z), O1(18f: x, y, z).
| R \overline{3} m | R \overline{3} | ||
|---|---|---|---|
| a (Å | 5.6060(1) | 5.6058(1) | |
| c(\AA | 13.6762(3) | 13.6758(3) | |
| \operatorname{Vol}\left(\AA^{3}\right. | 372.23(1) | 372.19(1) | |
| \mathrm{O}_{1 \mathrm{x}} | 0.2498(3) | 0.128(1) | |
| \mathrm{O}_{1 \mathrm{y}} | -0.170(1) | -0.207(1) | |
| \mathrm{O}_{1 \mathrm{z}} | 0.584(1) | 0.583(1) | |
| B_{\text {iso }}\left(\AA^{2}\right) | Sr | 0.75(5) | 0.75(5) |
| Co/Sb | 0.23(5) | 0.26(7) | |
| O | 2.11(5) | 0.88(2) | |
| Occupancy | Sb1/Co2(3b) | 0.80(1)/0.20(1) | 0.80(1)/0.20(1) |
| Co1/Sb2(3a) | 0.80(1)/0.20(1) | 0.80(1)/0.20(1) | |
| R_{\mathrm{p}}(\%) | 11.8 | 8.47 | |
| R_{\text {Bragg }} (%) | 4.28 | 1.77 | |
| \chi^{2} | 1.41 | 1.15 |