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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H2⋯I1i	0.81 (2)	2.72 (3)	3.500 (4)	161 (5)
N1—H1⋯I1	0.85 (6)	2.98 (6)	3.813 (4)	169 (5)

Symmetry code: (i) .