Table 2. Experimental details.
| Crystal data | |
| Chemical formula | C8H8N4Se2 |
| M r | 318.10 |
| Crystal system, space group | Monoclinic, I2/a |
| Temperature (K) | 120 |
| a, b, c (Å) | 11.746 (2), 8.1617 (10), 10.0922 (15) |
| β (°) | 97.121 (14) |
| V (Å3) | 960.1 (3) |
| Z | 4 |
| Radiation type | Mo Kα |
| μ (mm−1) | 7.66 |
| Crystal size (mm) | 0.48 × 0.09 × 0.04 |
| Data collection | |
| Diffractometer | STOE IPDS 2T |
| Absorption correction | Integration |
| Tmin, Tmax | 0.468, 0.893 |
| No. of measured, independent and observed [I > 2σ(I)] reflections | 2481, 1144, 930 |
| R int | 0.037 |
| (sin θ/λ)max (Å−1) | 0.663 |
| Refinement | |
| R[F2 > 2σ(F2)], wR(F2), S | 0.056, 0.148, 1.10 |
| No. of reflections | 1144 |
| No. of parameters | 64 |
| H-atom treatment | H-atom parameters constrained |
| Δρmax, Δρmin (e Å−3) | 1.04, −1.75 |