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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1N1⋯O1i	0.875 (17)	2.162 (17)	3.0271 (11)	170.0 (13)
N2—H1N2⋯N3ii	0.887 (17)	2.287 (16)	3.0302 (12)	141.3 (13)
N3—H1N3⋯O1iii	0.901 (14)	2.252 (13)	3.0614 (11)	149.4 (13)
N3—H2N3⋯O1iv	0.914 (14)	2.281 (15)	3.0889 (12)	147.1 (12)
C7—H7B⋯N3v	0.991 (15)	2.545 (14)	3.4341 (14)	149.2 (11)
C9—H9B⋯Cgiv	0.96 (2)	2.94 (2)	3.7469 (16)	142.3 (14)

Symmetry codes: (i) ; (ii) ; (iii) ; (iv) ; (v) . Cg is the centroid of the C1–C6 benzene ring.