organic compounds
Open access
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—Hπ interaction occurs. In the crystal, a number of C—HO interactions link the molecules, forming a three-dimensional structure.
organic compounds
Open access
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—HO interaction between the ketonic carbonyl O atom and an H atom on the naphthalene ring system. In the crystal, C—HO interaction of the benzene ring in the benzoyl group and weak C=Oπ interaction [Ocentroid = 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.
organic compounds
Open access
In the molecule of the title compound, C28H22F2O4, the benzoyl groups are aligned almost antiparallel and the fluorobenzene rings form a dihedral angle of 14.12 (7)°. The dihedral angles between the 2,7-diethoxynaphthalene ring system and the benzene rings are 70.00 (4) and 67.28 (4)°. In the crystal, molecules are linked by C—HO and C—HF hydrogen bonds, forming layers parallel to the ab plane. The layers are further connected by π–π interactions [centroid–centroid distances of 3.6115 (10) Å] into a three-dimensional structure.