Table 2. Experimental details.
| Crystal data | |
| Chemical formula | [Co(C6H6N2O)2(H2O)4](C4H2O4) |
| M r | 489.30 |
| Crystal system, space group | Monoclinic, P21/c |
| Temperature (K) | 296 |
| a, b, c (Å) | 9.6914 (10), 10.0106 (11), 11.3811 (12) |
| β (°) | 113.416 (3) |
| V (Å3) | 1013.22 (19) |
| Z | 2 |
| Radiation type | Mo Kα |
| μ (mm−1) | 0.91 |
| Crystal size (mm) | 0.25 × 0.19 × 0.16 |
| Data collection | |
| Diffractometer | Bruker APEXII CCD |
| Absorption correction | Analytical (X-RED32; Stoe & Cie, 2002 ▸) |
| T min, T max | 0.394, 0.746 |
| No. of measured, independent and observed [I > 2σ(I)] reflections | 19963, 1962, 1830 |
| R int | 0.032 |
| (sin θ/λ)max (Å−1) | 0.617 |
| Refinement | |
| R[F 2 > 2σ(F 2)], wR(F 2), S | 0.032, 0.077, 1.14 |
| No. of reflections | 1962 |
| No. of parameters | 144 |
| H-atom treatment | H-atom parameters constrained |
| Δρmax, Δρmin (e Å−3) | 0.35, −0.35 |