Table 4. Hydrogen-bond geometry (Å, °) for (IV) .

Cg1 and Cg2 are the centroids of the 4-tert-butyl­phenyl rings [(IVA: C3–C8 and (IVB): C13–C18]. Cg4 is the centroid of the 3-methyl­phenyl ring (C32–C37) of mol­ecule (IVB).

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
C7—H7⋯Cg4i	0.95	2.91	3.768 (2)	151
C24—H24⋯Cg2ii	0.95	2.97	3.824 (2)	150
C29—H29B⋯Cg1iii	0.98	2.78	3.706 (2)	157

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