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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H2⋯N1i	0.89 (3)	2.27 (3)	3.142 (2)	168 (2)

Symmetry code: (i) .