Table 1. Experimental details.
| Crystal data | |
| Chemical formula | Na4Ni7(AsO4)6 |
| M r | 1336.3 |
| Crystal system, space group | Monoclinic, C2/m |
| Temperature (K) | 293 |
| a, b, c (Å) | 14.5383 (11), 14.5047 (11), 10.6120 (8) |
| β (°) | 118.299 (2) |
| V (Å3) | 1970.3 (3) |
| Z | 4 |
| Radiation type | Mo Kα |
| μ (mm−1) | 16.76 |
| Crystal size (mm) | 0.07 × 0.06 × 0.04 |
| Data collection | |
| Diffractometer | Bruker D8 Venture |
| Absorption correction | Multi-scan (SADABS; Bruker, 2015 ▸) |
| T min, T max | 0.640, 0.747 |
| No. of measured, independent and observed [I > 3σ(I)] reflections | 48075, 3773, 2901 |
| R int | 0.036 |
| (sin θ/λ)max (Å−1) | 0.772 |
| Refinement | |
| R[F 2 > 2σ(F 2)], wR(F 2), S | 0.039, 0.052, 2.73 |
| No. of reflections | 3773 |
| No. of parameters | 146 |
| Δρmax, Δρmin (e Å−3) | 3.34, −2.22 |