Table 4. Hydrogen-bond geometry (Å, °) for 1·HCl.

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1A⋯N5i	0.88	2.12	2.984 (3)	168
N1—H1B⋯Cl1i	0.88	2.37	3.2432 (18)	173
N3—H3⋯Cl1ii	0.79 (3)	2.59 (3)	3.367 (2)	168 (3)
N4—H4A⋯O1	0.88	2.07	2.931 (3)	164
N4—H4B⋯N3	0.88	1.92	2.795 (3)	171
N6—H6A⋯N2iii	0.88	2.02	2.903 (3)	177

Symmetry codes: (i) ; (ii) ; (iii) .