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

초록

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)]. © © Park et al. 2018.

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