2,2′-{[(2,2′-Diethoxy-1,1′-binaphthalene-6,6′-diyl)bis(4,1-phenylene)]bis(methanylylidene)}dimalononitrile

Abstract

The title compound, C44H30N4O2, was prepared from 6,6′-dibromo-2,2′-diethoxy-1,1′-binaphthalene through a coupling reaction with 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde followed by a Knoevenagel reaction with malononitrile. The dihedral angle between the symmetry-related naphthalene ring systems is 68.82 (8)° while the dihedral angle between the the naphthalene ring system and the adjacent benzene ring is 16.92 (7)°. Four symmetry-independent molecules which are linked by intermolecular C—H...π interaction generate the packing motif in the crystal structure. One of the CN groups is disordered over two sets of sites in a 0.60 (2):0.40 (2) ratio.