Table 3. Hydrogen-bond geometry (Å, °) for (III) .

Cg2 is the centroid of the C6–C11 ring.

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
C3—H3A⋯O2i	0.97	2.56	3.272 (3)	130
C5—H5A⋯O1ii	0.97	2.56	3.469 (3)	156
N2—H21⋯O2ii	0.87 (2)	1.83 (2)	2.696 (3)	172 (3)
N2—H22⋯O1iii	0.88 (2)	1.83 (2)	2.700 (3)	172 (3)
C4—H4B⋯Cg2iv	0.97	2.59	3.473 (3)	152

Symmetry codes: (i) x, y+1, z; (ii) -x+2, -y+1, -z+1; (iii) -x+1, -y+1, -z+1; (iv) -x, -y, -z.