The molecule of the title compound, C34H36O6, is located on a twofold rotation axis. The two 4-butoxybenzoyl groups at the 1- and 8-positions of the naphthalene ring system are aligned almost antiparallel. The dihedral angles between the benzene rings and the naphthalene ring system are 71.70 (4)°. In the crystal, the molecules are connected via C—H⋯π interactions into a layer parallel to (010).
The title compound, C32H32O6, crystallized with two independent molecules in the asymmetric unit. Each molecule has essentially the same feature of non-coplanar aromatic rings whereby the two 4-isopropoxybenzoyl groups are twisted in a perpendicular manner to the naphthalene ring and oriented in the same direction (syn-orientation). The benzene rings of the aroyl groups make dihedral angles of 16.13 (7) and 25.31 (7)° in the two molecules. These benzene rings make dihedral angles of 88.38 (8) and 75.32 (7)° with the naphthalene ring system in one molecule, and 89.71 (7) and 82.11 (7)° in the other. In the crystal, molecules are linked via C—H⋯O hydrogen bonds, forming a three-dimensional network. In one independent molecule, the 2-propyl groups of both isopropoxy groups are disordered over two positions with site occupancies of 0.512 (3) and 0.488 (3).
In the title compound, C32H32O4, the dihedral angle between the two benzene rings of the 2,4,6-trimethylbenzoyl groups is 71.43 (7)°. The dihedral angles between the two benzene rings and the naphthalene ring system are 81.58 (5) and 84.92 (6)°. An intramolecular C—H⋯O interaction is observed.
In the title molecule, C30H28O4, the interplanar angle between the two benzene rings of the 3,5-dimethylbenzoyl groups is 50.35 (7)°. The dihedral angles between the two benzene rings and the naphthalene ring system are 81.87 (6) and 83.55 (6)°. In addition, the conformations of the pairs of methyl groups and their counterparts differ from each other though their environment is very similar. In the crystal, weak C—H⋯O interactions occur.
In the title compound, C29H25ClO4, the dihedral angle between the benzene rings of the 2,4,6-trimethylbenzoyl group and the 4-chlorobenzoyl group is 65.19 (9)°. The dihedral angles between the naphthalene ring system and the benzene rings of the 2,4,6-trimethylbenzoyl group and the 4-chlorobenzoyl group are 85.66 (8) and 69.48 (8)°, respectively. In the crystal, two types of intermolecular C—H⋯O interactions and an intramolecular C—H⋯O interaction are observed. Moreover, there is a short intramolecular C=O⋯C=O contact of 2.614 (2) Å between the benzoyl substituents.
The entire title molecule, C42H36O6, is completed by the application of a twofold axis. The 4-phenoxybenzoyl groups at the 1- and 8-positions of the naphthalene ring system are aligned almost antiparallel. The dihedral angle between the best planes of the benzene rings of the benzoyl moieties and the naphthalene ring system is 70.52 (5)° and that between the best planes of the benzene rings of the phenoxy groups and the naphthalene ring system is 27.80 (6)°. In the crystal, molecules are linked into a three-dimensional architecture by C—H⋯O and C—H⋯π interactions.
In the title compound, C31H20O5, the phenyl rings of the benzoyloxy and benzoyl groups are twisted away from the naphthalene ring system by 64.27 (6), 73.62 (5) and 80.41 (6)°. In the crystal, C—H...O hydrogen bonds and C—H...π interactions link the molecules, forming tubular chains parallel to thebaxis. The chains are further connected into a three-dimensional network by C—H...π interactions and π–π stacking contacts [centroid–centroid distances = 3.622 (10)–3.866 (12) Å].
In the title compound, C38H24O6, the phenyl rings of the benzoyl and benzoyloxy groups make dihedral angles of 67.12 (5), 85.15 (5), 76.41 (5) and 71.47 (5)° with the naphthalene ring system. In the crystal, C—H⋯O hydrogen bonds link molecules into chains parallel to the b axis. The structure also features C—H⋯π and π–π stacking interactions, with centroid–centroid distances in the range 3.6441 (7)–3.9197 (8) Å.
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