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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H1⋯O1i	0.89 (1)	2.21 (1)	3.0307 (19)	154 (2)
N2—H2⋯N1ii	0.88 (1)	2.33 (1)	3.115 (2)	149 (2)

Symmetry codes: (i) ; (ii) .