1,8-Bis(4-fluoro-phen-yl)naphthalene.
Ontology highlight
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: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: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?? 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
Project description:The title compound, C28H22N2O8, possesses crystallographically imposed twofold symmetry, with the two central carbon atoms of the naphthalene unit lying on the rotation axis. The two benzoyl groups in the mol-ecule are twisted away from the attached naphthalene unit with a C-C-C=O torsion angle of 49.05?(15)° between the naphthalene unit and the carbonyl group. The dihedral angle between the naphthalene ring system and the benzene ring is 77.17?(5)°. In the crystal, pairs of C-H?O=C hydrogen bonds link the mol-ecules into a double-column structure along the c axis. The mol-ecules are further linked by C-H?O=N hydrogen bonds, forming a three-dimensional network. C-H?? inter-actions between the methyl-ene group and the naphthalene unit and ?-? inter-actions between the naphthalene ring systems [centroid-centroid distances of 3.7858?(7)-3.7860?(7)?Å] are also observed.
| S-EPMC4186128 | biostudies-literature
Project description:The asymmetric unit of the title compound, C(13)H(10)F(2)N(2)O, contains one and a half N,N'-bis-(4-fluoro-phen-yl)urea mol-ecules. One of the mol-ecules has crystallographic twofold rotation symmetry. The benzene rings are twisted from each other by dihedral angles of 29.69?(6)° for the mol-ecule in a general position and 89.83?(6)° for the symmetry-generated mol-ecule. In the crystal structure, a pair of inter-molecular N-H?O hydrogen bonds link symmetry-related mol-ecules into chains along the b axis, forming R(2) (1)(6) ring motifs.
| S-EPMC2979587 | biostudies-literature