Table 4. Hydrogen-bond geometry (Å, °) for (IV) .
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| N1—H1⋯O2i | 0.814 (16) | 2.517 (16) | 3.0806 (15) | 127.4 (14) |
| C14—H14⋯O1ii | 0.95 | 2.60 | 3.1827 (17) | 120 |
Symmetry codes: (i) 
; (ii) 
.
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