Table 1. Hydrogen-bond geometry (, ).
Cg1 is the centroid of the C5C10 ring.
| DHA | DH | HA | D A | DHA |
|---|---|---|---|---|
| C1H1A Cg1i | 0.97 | 2.74 | 3.645(4) | 155 |
| C4H4Cg1ii | 0.93 | 2.90 | 3.805(3) | 164 |
Symmetry codes: (i) 
; (ii) 
.
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