| [CoCl2(C4H4N2)] | Dx = 2.260 Mg m−3 |
| Mr = 209.92 | Cu Kα radiation, λ = 1.54184 Å |
| Orthorhombic, Imma | Cell parameters from 2503 reflections |
| a = 6.6935 (1) Å | θ = 6.9–78.2° |
| b = 7.2024 (1) Å | µ = 28.91 mm−1 |
| c = 12.7978 (2) Å | T = 100 K |
| V = 616.97 (2) Å3 | Block, pink |
| Z = 4 | 0.1 × 0.08 × 0.08 mm |
| F(000) = 412 |