Structural details of \mathrm{SrLaFeRuO6}^{6}, \mathrm{SrPrFeRuO}_{6} and \mathrm{SrNdFeRuO}_{6} obtained at room temperature from NPD data using Pbnm structural model, refining all mode amplitudes. The B_{\text {iso }} value for Fe/Ru cations was fixed in 0.5 \AA in order to guarantee the convergence of the refinement.
| \mathrm{SrLaFeRuO}_{6} | \mathrm{SrPrFeRuO}_{6} | \mathrm{SrNdFeRuO}_{6} | ||
|---|---|---|---|---|
| Instrument | D2b (ILL) | D2b (ILL) | Spodi (FRMII) | |
| Sr/Ln | 4c (x,y,1/4) | |||
| x | 0.0000(9) | 0.001(1) | 0.0023(7) | |
| y | -0.0166(6) | -0.0245(5) | -0.0294(3) | |
| B_{\text {iso }}\left(\AA^{2}\right) | 0.66(3) | 0.56(3) | 0.24(2) | |
| Fe/Ru | 4a (0,1/2,0) | |||
| B_{\text {iso }}\left(\AA^{2}\right) | 0.5 | 0.5 | 0.5 | |
| O1 | 4c (x,y,1/4) | |||
| x | -0.0661(7) | -0.0790(5) | -0.0837(5) | |
| y | 0.507(1) | 0.5096(7) | 0.5089(6) | |
| B_{i s o}\left(\AA^{2}\right) | 0.89(2) | 0.81(2) | 0.67(2) | |
| O2 | 8d (x,y,z) | |||
| x | 0.7277(5) | 0.7223(5) | 0.7229(4) | |
| y | 0.2719(5) | 0.2784(5) | 0.2790(4) | |
| z | 0.5289(3) | 0.5291(3) | 0.5298(3) | |
| B_{i s o}\left(\AA^{2}\right) | 0.89(2) | 0.81(2) | 0.67(2) | |
| a (Å) | 5.5752(2) | 5.5477(2) | 5.5357(2) | |
| b(\AA) | 5.5463(2) | 5.5463(2) | 5.5432(2) | |
| c(\AA) | 7.8557(3) | 7.8390(2) | 7.8257(3) | |
| V\left(\AA^{3}\right) | 242.91(2) | 241.20(2) | 240.13(1) | |
| R_{p} (%) | 3.76 | 3.84 | 4.70 | |
| R_{w p}(\%) | 4.78 | 4.88 | 6.31 | |
| R_{\text {exp }}(\%) | 6.10 | 3.81 | 2.29 | |
| R_{\text {Bragg }}(\%) | 5.53 | 4.70 | 7.49 |