Table 2. Hydrogen-bond geometry (Å, °) for the monoclinic polymorph .
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| O1—H1⋯O2i | 0.897 (18) | 1.846 (18) | 2.7411 (13) | 176.3 (17) |
| O2—H2⋯O1ii | 0.888 (19) | 1.891 (19) | 2.7607 (11) | 166.0 (17) |
| C9—H9⋯O1 | 0.98 (1) | 2.43 (1) | 3.0911 (15) | 124 (1) |
Symmetry codes: (i)
; (ii)
.