Table 2. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| N1—H1A⋯N7i | 0.966 (18) | 2.26 (3) | 3.031 (4) | 136 (3) |
| N1—H1A⋯N5ii | 0.966 (18) | 2.33 (4) | 3.021 (4) | 127 (3) |
| N4—H4⋯N7i | 0.952 (19) | 1.92 (2) | 2.834 (4) | 160 (4) |
Symmetry codes: (i) 
; (ii) 
.
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