Table 2. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| N2—H2N⋯N4i | 0.92 | 1.94 | 2.846 (5) | 170 |
Symmetry code: (i) 
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