Crystal structure and Hirshfeld surface analysis of 1,2-bis­(2′,6′-diisoprop­oxy-[2,3′-bipyridin]-6-yl)benzene

The title mol­ecule, C(38)H(42)N(4)O(4), displays a helical structure induced by the combination of the C—C—C—C torsion angle [−10.8 (2)°] between two 2,3′-bipyridyl units attached to the 1,2-positions of the central benzene ring and consecutive connections between five aromatic rings through the meta- and ortho-positions. Intra­molecular C—H⋯π inter­actions between an H atom of a pyridine ring and the centroid of a another pyridine ring contributes to the stabilization of the helical structure. In the crystal, weak C—H⋯π inter­actions link the title mol­ecules into a two-dimensional supra­molecular network extending parallel to the ac plane, in which the mol­ecules with right- and left-handed helical structures are alternately arranged. Hirshfeld surface analysis and two-dimensional fingerprint plots indicate that the mol­ecular packing is dominated by van der Waals inter­actions between neighbouring H atoms, as well as by C—H⋯π inter­actions. One isopropoxyl group is disordered over two sets of sites [occupancy ratio 0.715 (5):0.285 (5)].