Table 2. Hydrogen-bond geometry (Å, °) for 2 .

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1⋯Oi	0.88	2.00	2.8745 (18)	170
N1—H2⋯N2ii	0.88	2.24	3.0850 (18)	161

Symmetry codes: (i) ; (ii) .