[2,7-Dimeth­oxy-8-(4-meth­oxy­benzo­yl)naphthalen-1-yl](4-meth­oxy­phen­yl)methanone chloro­form monosolvate

In the title compound, C₂₈H₂₄O₆·CHCl₃, the two 4-meth­oxy­benzoyl groups at the 1- and 8-positions of the naphthalene ring system are aligned almost anti­parallel, the benzene rings making a dihedral angle of 25.76 (7)°. The naphthalene ring system makes dihedral angles of 72.51 (7) and 73.33 (7)° with the benzene rings. In the crystal, the naphthalene mol­ecules are linked by C—H...O inter­actions, forming a helical chain along the b-axis direction. A C—H...Cl inter­action is also observed between the aroylated naphthalene and chloro­form mol­ecules. The chloro­form mol­ecule is disordered over two positions with site occupancies of 0.478 (5) and 0.522 (5).

1-Benzoyl­naphthalene-2,7-diyl dibenzoate

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 the b axis. 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].

(2,7-Dimeth­oxy­naphthalen-1-yl)(4-meth­oxy­phen­yl)methanone

In the mol­ecule of the title compound, C₂₀H₁₈O₄, the dihedral angle between the naphthalene ring system and the benzene ring is 81.74 (5)°. An inter­molecular C—H...O inter­action is formed between an H atom at the 6-position of the naphthalene ring and the O atom of the meth­oxy group at the 7-position.

(8-Benzoyl-2,7-dimeth­oxy­naphthalen-1-yl)(4-phen­oxy­phen­yl)methanone

In the mol­ecule of the title compound, C₃₂H₂₄O₅, the benzoyl group and the 4-phenoxy substituted benzoyl group at the 1- and 8-positions of the naphthalene ring system are aligned almost anti­parallel. The two benzene rings make a dihedral angle of 21.18 (10)°, and are inclined to the naphthalene ring system by 86.53 (9) and 82.95 (8)°, respectively. In the crystal, C—H...O inter­actions are observed involving aromatic and meth­oxy H atoms with ketonic carbonyl O atoms, as well as C—H...π inter­actions between aromatic H atoms and the π-systems of naphthalene and benzene rings. These interactions form a three-dimensional architecture and afford a waved alignment of the naphthalene ring systems along the c axis.

(2,7-Dimeth­oxy­naphthalen-1-yl)(4-phen­oxy­phen­yl)methanone

In the title mol­ecule, C₂₅H₂₀O₄, the naphthalene and phen­oxy groups are oriented nearly perpendicular with respect to the benzene ring of the benzoyl group, with dihedral angles of 89.61 (5) and 86.13 (6)°, respectively. The crystal structure features C—H...O and C—H...π inter­actions.

1,8-Bis(4-fluoro­benzo­yl)naphthalen-2,7-diyl dimethane­sulfonate

The mol­ecule of the title compound, C₂₆H₁₈F₂O₈S₂, lies across a crystallographic twofold rotation axis. The benzene rings of the 4-fluorobenzoyl groups make dihedral angles of 78.93 (12)° with the naphthalene ring system. An intra­molecular C—H...π inter­action occurs. In the crystal, a number of C—H...O inter­actions link the mol­ecules, forming a three-dimensional structure.

Bis(1-benzoyl-7-meth­oxy­naphthalen-2-yl) terephthalate

The title molecule, C₄₄H₃₀O₈, lies about a crystallographic inversion centre located at the centre of the central benzene ring. The benzene rings in the benzoyl and the terephthalate units make dihedral angles of 67.05 (7)° and 57.57 (7)°, respectively, with the naphthalene ring system. There is an intra­molecular C—H...O inter­action between the ketonic carbonyl O atom and an H atom on the naphthalene ring system. In the crystal, C—H...O inter­action of the benzene ring in the benzoyl group and weak C=O...π inter­action [O...centroid = 3.375 (2) Å] of the naphthalene ring with the O atom in the ketonic carbonyl group are observed. These inter­actions form layers parallel to the bc plane.

(4-Eth­oxy­benzo­yl)[8-(4-eth­oxy­benzo­yl)-2,7-di­meth­oxy­naphthalen-1-yl]methanone

The title mol­ecule, C₃₀H₂₈O₆, possesses crystallographically imposed twofold symmetry, with two central C atoms in the naphthalene unit lying on the rotation axis along [001]. The 4-eth­oxy­benzoyl groups at the peri positions of the naphthalene ring system are disordered over two sets of sites with occupancies of 0.769 (4) and 0.231 (4). They are directed in opposite directions from the naphthalene plane (anti orientation). For the major component, the dihedral angle between the aroyl benzene ring and the naphthalene ring system is 75.62 (13)° [minor component 75.5 (4)°], and that between the aroyl benzene rings is 32.58 (15)°. In the crystal, mol­ecules are linked via C—H...O and C—H...π inter­actions, forming a three-dimensional network.