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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N3—H3A⋯N1i	0.88 (2)	2.11 (2)	2.979 (2)	165.7 (19)
N3—H3B⋯N2ii	0.93 (2)	2.05 (2)	2.964 (2)	167.6 (16)

Symmetry codes: (i) ; (ii) .