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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H2N⋯N1i	0.86 (2)	2.13 (2)	2.984 (2)	171.8 (18)

Symmetry code: (i) .