Table 4. Experimental details.
| Crystal data | |
| Chemical formula | C7H6N4O3 |
| M r | 194.16 |
| Crystal system, space group | Monoclinic, C2/c |
| Temperature (K) | 296 |
| a, b, c (Å) | 15.3747 (4), 4.6699 (1), 23.0423 (5) |
| β (°) | 103.122 (1) |
| V (Å3) | 1611.20 (6) |
| Z | 8 |
| Radiation type | Cu Kα |
| μ (mm−1) | 1.11 |
| Crystal size (mm) | 0.24 × 0.18 × 0.11 |
| Data collection | |
| Diffractometer | Bruker D8 VENTURE PHOTON 100 CMOS |
| Absorption correction | Multi-scan (SADABS; Krause et al., 2015 ▸) |
| T min, T max | 0.81, 0.89 |
| No. of measured, independent and observed [I > 2σ(I)] reflections | 5850, 1598, 1503 |
| R int | 0.026 |
| (sin θ/λ)max (Å−1) | 0.625 |
| Refinement | |
| R[F 2 > 2σ(F 2)], wR(F 2), S | 0.048, 0.114, 1.16 |
| No. of reflections | 1598 |
| No. of parameters | 128 |
| H-atom treatment | H-atom parameters constrained |
| Δρmax, Δρmin (e Å−3) | 0.25, −0.33 |