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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H2N1⋯N3i	0.82 (2)	2.20 (2)	3.010 (3)	169 (2)
N1—H1N1⋯N3ii	0.84 (3)	2.33 (3)	3.157 (3)	167 (3)
C5—H5⋯O2iii	0.93	2.48	3.169	131
C3—H3⋯Cl1iv	0.93	2.93	3.602	130

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