Table 1. Hydrogen-bond geometry (, ).
| DHA | DH | HA | D A | DHA |
|---|---|---|---|---|
| N2H2DN6 | 0.86 | 2.56 | 3.154(3) | 128 |
| N5H5BN3i | 0.86 | 2.36 | 3.163(3) | 156 |
Symmetry code: (i) 
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