Table 1. Hydrogen-bond geometry (, ).
Cg3 and Cg4 are the centroids of the C1C6 and C16C21 rings, respectively.
| DHA | DH | HA | D A | DHA |
|---|---|---|---|---|
| O1H1O2 | 0.82 | 1.91 | 2.596(3) | 140 |
| N3H3AN2i | 0.86 | 2.27 | 3.110(4) | 164 |
| C2H2Cg3ii | 0.90 | 2.93 | 3.656(4) | 136 |
| C12H12Cg4iii | 0.93 | 2.99 | 3.361(4) | 106 |
Symmetry codes: (i)
; (ii)
; (iii)
.