[2,7-Dimethoxy-8-(2-naphthoyl)naphthalen-1-yl](naphthalen-2-yl)methanone

Abstract

The mol­ecule of the title compound, C34H24O4, possesses crystallographically imposed twofold C 2 symmetry. The two 2-naphthoyl groups at the 1- and 8-positions of the central naphthalene ring are aligned almost anti­parallel [5.21 (5)°]. The dihedral angle between the central 2,7-dimeth­oxy­naphthalene unit and the terminal naphthyl groups is 75.13 (4)°. In the crystal, weak C—H⋯O hydrogen bonds and π–π stacking inter­actions [centroid–centroid and inter­planar distances are 3.6486 (8) and 3.3734 (5) Å, respectively] are observed.

Crystal structure of 1-(4-hydroxybenzoyl)-2,7-dimethoxynaphthalene: Contribution of classical and non-classical hydrogen bonding interactions to the molecular packing structure

“…Recently, the authors have found highly efficient diaroylation at peri (1,8)-positions of 2,7-dialkoxynaphthalene compounds [5,6]. peri-Aroylated naphthalene compounds thus obtained are proved to have non-coplanarly accumulated aromatic-rings-structure in crystal, i.e., the aroyl groups are twistedly situated to the naphthalene ring core in a perpendicular fashion [7][8][9]. Besides, the two aroyl groups are ordinarily oriented in an opposite direction with a few exceptional compounds bearing unidirectionally-aligned aroyl groups [10,11].…”