Table 1. Hydrogen-bond geometry (, ).
| DHA | DH | HA | D A | DHA |
|---|---|---|---|---|
| N3H3AN2i | 0.91(2) | 2.16(2) | 3.0677(17) | 176.1(16) |
| N3H3BO1ii | 0.87(2) | 2.51(2) | 3.0599(16) | 122.0(15) |
| C5H5O1iii | 0.93 | 2.44 | 3.3163(16) | 157 |
Symmetry codes: (i) 
; (ii) 
; (iii) 
.
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