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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H2A⋯Br1i	0.90	2.68	3.530 (2)	158
N2—H2B⋯Br1ii	0.90	2.73	3.524 (2)	148
N3—H3A⋯Br1	0.90	2.38	3.271 (2)	169
N3—H3B⋯Br1iii	0.90	2.56	3.337 (2)	145

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