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

Cg1 is the centroid of the major disorder component of the thio­phene ring.

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H1N2⋯N3i	0.92 (2)	2.29 (2)	3.197 (3)	168.2 (19)
C3—H3A⋯Cg1ii	0.93	2.93	3.566 (6)	127
C12—H12A⋯Cg1iii	0.93	2.78	3.430 (3)	128

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