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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H1⋯N1i	0.93 (3)	2.23 (3)	3.097 (3)	155 (3)
N2—H2⋯N3ii	0.88 (4)	2.54 (4)	3.307 (3)	147 (3)

Symmetry codes: (i) ; (ii) .