| D—H···A | D—H | H···A | D···A | D—H···A |
| N1—H1···N5 | 0.89 (1) | 2.10 (1) | 2.972 (1) | 164 (1) |
| N4—H4···N2 | 0.89 (1) | 2.15 (1) | 3.020 (1) | 165 (1) |
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