Kosuke Sasagawa

[8-(4-But-oxy-benzo-yl)-2,7-dimeth-oxy-naphthalen-1-yl](4-but-oxy-phen-yl)methanone.

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).

{2,7-Dimeth­oxy-8-[4-(propan-2-yl­oxy)benzo­yl]naphthalen-1-yl}[4-(propan-2-yl­oxy)phen­yl]methanone

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).

(3,5-Dimethyl-phen-yl)[8-(3,5-dimethyl-benzo-yl)-2,7-dimeth-oxy-naphthalen-1-yl]methanone.

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.

{8-[4-(Bromo­meth­yl)benzo­yl]-2,7-dimeth­oxy­naphthalen-1-yl}[4-(bromo­meth­yl)phen­yl]methanone

In the title compound, C28H22Br2O4, the two 4-bromomethylbenzoyl groups at the 1- and 8-positions of the naphthalene ring system are aligned almost antiparallel, the benzene rings forming a dihedral angle of 2.94 (16)°. The dihedral angles between the benzene rings and the naphthalene ring systems are 70.98 (13) and 72.89 (13)°. In the crystal, centrosymmetrically-related molecules are linked into dimeric units by intermolecular C—H⋯O interactions.

[8-(4-Phen­oxy­benzo­yl)-2,7-bis­(propan-2-yl­oxy)naphthalen-1-yl](4-phen­oxy­phen­yl)methanone

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.

1,8-Dibenzoyl-naph-tha-lene-2,7-diyl dibenzoate.

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.

[2,7-Dimeth­oxy-8-(2,4,6-trimethyl­benzo­yl)naphthalen-1-yl](2,4,6-trimethyl­phen­yl)methanone

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.

(2,7-Dimeth­oxy­naphthalen-1-yl)(2,4,6-trimethyl­phen­yl)methanone

In the title compound, C22H22O3, the dihedral angle between the naphthalene ring system and the benzene ring is 82.93 (5)°. The bridging carbonyl C—C(=O)—C plane makes dihedral angles of 50.11 (6) and 46.87 (7)°, respectively, with the naphthalene ring system and the benzene ring. In the crystal, three types of weak intermolecular C—H⋯O interactions are observed.

(4-Fluoro­phen­yl)[8-(4-fluoro­benzo­yl)-2,7-diphen­oxy­naphthalen-1-yl]methan­one

In the title compound, C36H22F2O4, the aromatic rings of the benzoyl and phenoxy groups make dihedral angles of 72.07 (5), 73.24 (5), 62.49 (5) and 77.96 (6)° with the naphthalene ring system. In the crystal, C—H⋯O hydrogen bonds and C—H⋯π interactions are observed.

[2,7-Dimeth-oxy-8-(4-propyl-benzo-yl)naphthalen-1-yl](4-propyl-phen-yl)methanone.

In the title compound, C32H32O4, the 4-propylbenzoyl groups at the 1- and 8-positions of the naphthalene ring system are aligned almost antiparallel, and their benzene rings make a dihedral angle of 8.64 (10)°. The dihedral angles between the naphthalene ring system and the benzene rings are 69.37 (8) and 69.45 (8)°. In the crystal, C—H⋯O interactions link adjacent molecules via their aroyl groups.