Table 4. Hydrogen-bond geometry (Å, °) for (III) .

Cg1 is the centroid of the C1–C6 ring.

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O1—H1⋯N2	0.84 (4)	1.71 (4)	2.5485 (13)	177 (6)
N2—H2⋯O1	0.89 (2)	1.66 (2)	2.5485 (13)	176 (2)
C5—H5⋯O1i	0.95	2.49	3.1489 (15)	126
C13—H13⋯O2ii	0.95	2.36	3.2889 (17)	165
C14—H14⋯Cg1ii	0.95	2.89	3.6596 (15)	138

Symmetry codes: (i) x, -y+{\script{1\over 2}}, z+{\script{1\over 2}}; (ii) x, y, z-1.