Crystal structure of 2,7-dieth­oxy-1,8-bis­(4-nitro­benzo­yl)naphthalene

Abstract

The title compound possesses crystallographically imposed twofold symmetry with two C atoms lying on the rotation axis and has a non-coplanarly accumulated aromatic-rings structure. In the crystal, C—H⋯O=C hydrogen bonds between the benzene rings and the carbonyl groups and C—H⋯O=N hydrogen bonds between the benzene rings and the nitro groups are observed; these C—H⋯O hydrogen bonds link the mol­ecules, forming a three-dimensional structure.

Abstract

The title compound, C ₂₈H ₂₂N ₂O ₈, possesses crystallographically imposed twofold symmetry, with the two central carbon atoms of the naphthalene unit lying on the rotation axis. The two benzoyl groups in the mol­ecule are twisted away from the attached naphthalene unit with a C—C—C=O torsion angle of 49.05 (15)° between the naphthalene unit and the carbonyl group. The dihedral angle between the naphthalene ring system and the benzene ring is 77.17 (5)°. In the crystal, pairs of C—H⋯O=C hydrogen bonds link the mol­ecules into a double-column structure along the c axis. The mol­ecules are further linked by C—H⋯O=N hydrogen bonds, forming a three-dimensional network. C—H⋯π inter­actions between the methyl­ene group and the naphthalene unit and π–π inter­actions between the naphthalene ring systems [centroid–centroid distances of 3.7858 (7)–3.7860 (7) Å] are also observed.