| D—H···A | D—H | H···A | D···A | D—H···A |
| N2—H1N2···O2 | 0.84 (2) | 2.26 (2) | 2.848 (3) | 127 (2) |
| N2—H1N2···O2i | 0.84 (2) | 2.38 (3) | 3.067 (3) | 139 (2) |
| N2—H2N2···N1ii | 0.81 (3) | 2.38 (3) | 3.118 (3) | 152 (3) |
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