Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| O1—H1⋯I1 | 0.79 (4) | 2.61 (4) | 3.391 (2) | 171 (3) |
| N1—H1A⋯O2i | 0.87 (3) | 2.05 (3) | 2.861 (3) | 155 (3) |
| N1—H1B⋯I1ii | 0.88 (3) | 2.71 (3) | 3.557 (2) | 163 (3) |
| N1—H1C⋯I1iii | 0.87 (3) | 2.80 (3) | 3.580 (2) | 150 (3) |
Symmetry codes: (i)
; (ii)
; (iii)
.