Table 1. Hydrogen-bond geometry (Å, °).

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1n⋯Cl2	0.88 (5)	2.32 (5)	3.192 (7)	173 (6)
O1w—H1w⋯Cl2	0.84 (6)	2.37 (6)	3.207 (7)	177 (11)
N2—H2n⋯Cl2i	0.88 (6)	2.49 (6)	3.349 (7)	166 (7)
O1w—H2w⋯Cl2ii	0.84 (5)	2.42 (7)	3.192 (7)	154 (8)
O2w—H3w⋯O1wiii	0.84 (7)	1.96 (7)	2.801 (9)	174 (10)
O2w—H4w⋯O2wiv	0.84 (8)	2.08 (10)	2.804 (10)	144 (11)
O2w—H5w⋯O2wiii	0.83 (12)	2.05 (13)	2.804 (10)	151 (10)

Symmetry codes: (i) ; (ii) ; (iii) ; (iv) .