Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| C4—H4⋯N2i | 0.93 | 2.55 | 3.472 (2) | 169 |
| C5—H5⋯N3ii | 0.93 | 2.63 | 3.392 (3) | 139 |
Symmetry codes: (i) 
; (ii) 
.
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