Table 1. Hydrogen-bond geometry (, ).
Cg1 and Cg4 are the centroids of the O1A/C1/C2/C3/C4 and C7C12 five- and six-membered rings, respectively.
| DHA | DH | HA | D A | DHA |
|---|---|---|---|---|
| N3H3N3N2i | 1.02(3) | 1.87(3) | 2.892(3) | 178(2) |
| C12H12AO2 | 0.93 | 2.27 | 2.892(4) | 123 |
| C9H9A Cg1ii | 0.93 | 3.00 | 3.653(4) | 129 |
| C2H2A Cg4iii | 0.93 | 2.93 | 3.664(5) | 137 |
Symmetry codes: (i)
; (ii)
; (iii)
.