1,8-Bis(4-fluoro-phen-yl)naphthalene.
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ABSTRACT:
SUBMITTER: Feng JW
PROVIDER: S-EPMC3151928 | biostudies-literature |
REPOSITORIES: biostudies-literature
Similar Datasets
Project description:The title compound, C(26)H(18)F(2)O(4), is a naphthalene derivative in which the two aroyl groups at the 1- and 8-positions (peri positions) are anti to each other. There is an appreciable difference in the dihedral angles between the naphthalene ring system and the two benzene rings [66.88?(7)° and 88.09?(6)°]. In the crystal, weak C-H?O inter-actions involving one of the carbonyl groups and an aromatic C-H group ortho to the F atom seem to stabilize the packing of the mol-ecules.
| S-EPMC2979763 | biostudies-literature
Project description:In the title mol-ecule {systematic name: [2,7-dimethoxy-8-(4-phenoxybenzoyl)naphthalen-1-yl](4-phenoxyphenyl)methan-one}, C(38)H(28)O(6), the 4-phen-oxy-benzoyl units adopt a syn orientation with respect to the naphthalene ring system. The inter-nal benzene rings, A and B, make dihedral angles of 86.72?(5) and 79.22?(5)° with the naphthalene ring system. The two terminal benzene rings, C and D, of the 4-phen-oxy-benzoyl groups are twisted with respect to benzene rings A and B, with dihedral angles of A/C = 62.72?(8) and B/D = 87.61?(6)°. In the crystal, H atoms in the naphthalene system make two types of inter-molecular C-H?O inter-actions with the carbonyl O atom and the phenyl etheral O atom of neighbouring mol-ecules. Mol-ecules are further linked by C-H?? inter-actions involving a H atom of terminal benzene ring D and the ?-system of the inter-nal benzene ring A, forming dimers centered about an inversion center.
| S-EPMC3009209 | biostudies-literature
Project description:Mol-ecules of the title compound, C(24)H(18)N(2)O(6), are located on a twofold rotation axis passing through through the central C-C bond of the naphthalene ring system. The mol-ecular conformation is characterized by a roughly coplanar arrangement of the two substituted phenyl rings [dihedral angle 18.53?(5)°]. These two aryl rings are each twisted by 65.40?(5)° from the plane of the naphthyl unit.
| S-EPMC3201427 | biostudies-other
Project description:The title compound {systematic name: [8-(4-aminobenzoyl)-2,7-dimethoxynaphthalen-1-yl](4-aminophenyl)methanone}, C(26)H(22)O(4)N(2), possesses crystallographically imposed twofold symmetry, with two C atoms lying on the rotation axis. In the crystal, the mol-ecules inter-act through inter-molecular N-H?O hydrogen bonds between the amino and meth-oxy groups on the naphthalene ring systems and N-H?? inter-actions between the amino groups and the naphthalene rings. Furthermore, weak C-H?O hydrogen bonds and ?-? stacking inter-actions between the benzene rings are observed. The centroid-centroid and inter-planar distances between the benzene rings of the aroyl group and the naphthalene ring systems of adjacent mol-ecules are 3.6954?(8) and 3.2375?(5)?Å, respectively. The dihedral angle between the mean planes of the benzene ring and the naphthalene ring system is 83.59?(5)°. The benzene ring and the carbonyl group in the benzoyl unit are almost coplanar [C-C-C-O torsion angle = 175.91?(10)°].
| S-EPMC3009325 | biostudies-literature
Project description:In the title mol-ecule, C(24)H(14)N(2), the exterior C-C-C angle of the naphthalene ring system involving the two phenyl-substituted C atoms is 126.06?(11)° and the dihedral angles between the mean plane of the naphthalene ring system and those of the benzene rings are 66.63?(5) and 67.89?(5)°. In the crystal, mol-ecules are linked into a ladders by four weak C-H?? inter-actions.
| S-EPMC3050241 | biostudies-literature
Project description:There are two half-mol-ecules in the asymmetric unit of the title compound, C(32)H(30)Cl(4)N(4), in both of which the N-H bonds are syn to the meta-chloro substituents in the adjacent benzene ring. The other two Cl atoms of these two mol-ecules are disordered with occunpancy ratios of 0.79 (2):0.21 (2) and 0.68 (1):0.32 (1). Adjacent chloro-phenyl rings make dihedral angles of 74.3 (2) and 63.0 (2)° in the two mol-ecules. In the crystal, inter-molecular N-H⋯N hydrogen bonds link the mol-ecules into infinite chains.
| S-EPMC3051938 | biostudies-literature
Project description:The title naphthalene derivative, C24H20O2, features 4-methy-oxy-substituted benzene rings in the 1 and 4 positions of the naphthalene ring system. There are two crystallographically independent mol-ecules (A and B) in asymmetric unit. The independent mol-ecules have very similar conformations in which the naphthalene ring systems are only slightly bent, exhibiting dihedral angles between the constituent benzene rings of 3.76 (15) and 3.39 (15)° for A and B, respectively. The pendent 4-methyoxybenzene rings are splayed out of the plane through the naphthalene ring system to which they are connected [range of dihedral angles = 59.63 (13) to 67.09 (13)°]. In the crystal, the mol-ecular packing is consolidated by inter-molecular C-H⋯π inter-actions, leading to supra-molecular chains along the b axis. The chains assemble without directional inter-actions between them.
| S-EPMC9462186 | biostudies-literature
Project description:In the crystal structure of the title compound, C(15)H(9)F(2)NO, the complete mol-ecule is generated by a crystallographic twofold rotation axis and the O and N atoms of the central isoxazole ring are statistically disordered with equal site occupancies. The terminal benzene rings form a dihedral angle of 24.23?(3)° with the isoxazole ring. The dihedral angle between the benzene rings is 47.39?(2)°. No significant inter-molecular inter-actions are observed.
| S-EPMC3379362 | biostudies-literature
Project description:In the title mol-ecule, C(17)H(18)F(2)N(2), the dihedral angle between the benzene rings is 73.40 (3)°. The piperazine ring is close to an ideal chair conformation and the N-H hydrogen is in an equatorial position. In the crystal, molecules are linked via weak C-H⋯F hydrogen bonds.
| S-EPMC3435841 | biostudies-literature
Project description:The mol-ecule 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 intra-molecular C-H⋯π inter-action occurs. In the crystal, a number of C-H⋯O inter-actions link the mol-ecules, forming a three-dimensional structure.
| S-EPMC3629596 | biostudies-literature