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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1B⋯Cl2i	0.92	2.63	3.436 (2)	147
N2—H2B⋯Cl1i	0.92	2.55	3.380 (2)	151
N1—H1A⋯Cl2ii	0.92	2.59	3.479 (2)	162
N2—H2A⋯Cl1iii	0.92	2.55	3.439 (2)	162

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