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3-(1H-1,3-Benzimidazol-2-yl)-2,7-dimeth-oxy-quinoline.

ABSTRACT: In the title mol-ecule, C(18)H(15)N(3)O(2), the dihedral angle between the quinoline and benzimidazole ring systems is 23.57 (5)°. The C atoms of the meth-oxy groups are both close to being coplanar with their attached ring systems [deviations = 0.193 (2) and -0.020 (2) Å]. An intra-molecular N-H⋯O hydrogen bond closes an S(6) ring. In the crystal, N-H⋯N hydrogen bonds link the mol-ecules into C(4) chains propagating in [010]. Weak C-H⋯π inter-actions also occur.

SUBMITTER: Alliouche H

PROVIDER: S-EPMC3414947 | biostudies-literature |

REPOSITORIES: biostudies-literature

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5-[(1H-Benzimidazol-1-yl)meth-yl]benzene-1,3-dicarb-oxy-lic acid.

Project description:Crystals of the title compound, C(16)H(12)N(2)O(4), were obtained accidentally from a hydro-thermal reaction of 5-[(1H-benzimidazol-1-yl)meth-yl]isophthalic acid with manganese bromide in the presence of N,N'-dimethyl-formamide. In the title mol-ecule, the benzimidazole ring system is almost planar, with a maximum deviation from the mean plane of 0.010 (2) Å. The benzimidazole and central benzene rings are inclined at a dihedral angle of 71.7 (6)°. The crystal structure is stabilized by O-H⋯N and O-H⋯O hydrogen bonds.

| S-EPMC3238952 | biostudies-literature

(2,7-Dimeth-oxy-naphthalen-1-yl)(phen-yl)methanone.

Project description:The asymmetric unit of the title compound, C(19)H(16)O(3), contains three independent conformers. Each of the three conformers has essentially the same feature of non-coplanar aromatic rings whereby the aroyl group at the 1-position of the naphthalene ring is twisted in a perpendicular manner to the naphthalene ring. The dihedral angles between the benzene ring planes and the naphthalene ring systems are 75.34 (7), 86.47 (7) and 76.55 (6)° in the three conformers. The crystal structure is stabilized by inter-molecular C-H⋯O hydrogen bonds.

| S-EPMC2983196 | biostudies-literature

(2,7-Dimeth-oxy-naphthalen-1-yl)(4-phen-oxy-phen-yl)methanone.

Project description:In the title mol-ecule, C25H20O4, the naphthalene and phen-oxy 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?? inter-actions.

| S-EPMC3588466 | biostudies-literature

(2,7-Dimeth-oxy-naphthalen-1-yl)(4-meth-oxy-phen-yl)methanone.

Project description:In the mol-ecule of the title compound, C20H18O4, the dihedral angle between the naphthalene ring system and the benzene ring is 81.74?(5)°. An inter-molecular C-H?O inter-action is formed between an H atom at the 6-position of the naphthalene ring and the O atom of the meth-oxy group at the 7-position.

| S-EPMC3588548 | biostudies-literature

2-[4-(2,6-Dimeth-oxy-phen-yl)but-yl]-1,3-dimeth-oxy-benzene.

Project description:The title compound, C(20)H(26)O(4), crystallizes such that the alkyl chain adopts an all-anti conformation. The crystal packing displays edge-to-face arene-arene inter-actions with a dihedral angle of 87°. The complete molecule is generated by inversion symmetry.

| S-EPMC3007267 | biostudies-literature

2,7-Dimeth-oxy-1,8-bis-(4-phen-oxy-benzo-yl)naphthalene.

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

2,7-Dimeth-oxy-1-(2-naphtho-yl)naph-thalene.

Project description:In the title mol-ecule, C(23)H(18)O(3), the dihedral angle between the two naphthalene ring systems is 80.44?(4)°. The mean plane of the bridging carbonyl C-C(=O)-C group makes a torsion angle of -68.55?(17)° with the naphthalene system of the 2,7-dimeth-oxy-naphthalene unit and a torsion angle of -9.01?(19)° with the naphthalene ring system of the naphthoyl group. In the crystal, a weak C-H?O hydrogen bond occurs between the carbonyl O atom and an H atom of the naphthalene ring in the 2,7-dimeth-oxy-naphthalene unit of a symmetry-related mol-ecule.

| S-EPMC3415031 | biostudies-literature

2-(2,7-Dimeth-oxy-1-naphtho-yl)benzoic acid.

Project description:In the title compound, C(20)H(16)O(5), the dihedral angle between the naphthalene ring system and the benzene ring is 67.43?(5)°. The bridging carbonyl C-C(=O)-C plane makes dihedral angles of 82.64?(6) and 41.79?(7)°, respectively, with the naphthalene ring system and the benzene ring. The dihedral angle between the carb-oxy O-C(=O)-C plane and the benzene ring is 36.38?(7)° and that between the bridging carbonyl C-C(=O)-C plane and the carb-oxy O-C(=O)-C plane is 51.88?(8)°. The crystal structure is stabilized by inter-molecular O-H?O and C-H?O hydrogen-bonding inter-actions. An intra-molecular C-H?O hydrogen bond occurs between a naphthalene H atom and the carbonyl O atom of the carb-oxy group.

| S-EPMC2983668 | biostudies-literature

Methyl 4-(2,7-dimeth-oxy-1-naphtho-yl)benzoate.

Project description:In the title compound, C(21)H(18)O(5), the dihedral angle between the naphthalene ring system and the benzene ring is 86.65?(6)°. The bridging carbonyl C-C(=O)-C plane makes dihedral angles of 83.57?(7) and 20.21?(8)°, respectively, with the naphthalene ring system and the benzene ring. The ester O-C=O plane and the benzene ring are almost coplanar, making a dihedral angle of 3.81?(18)°. The two meth-oxy groups lie essentially in the naphthalene ring plane [C-O-C-C torsion angles = 2.1?(2) and -1.44?(19)°]. In the crystal structure, a centrosymmetric dimer is formed through C-H?O bonds connecting the 7-meth-oxy group and the carbonyl O atom of the ester group. The dimers are further linked by C-H?O hydrogen bonds between the methoxy-carbonyl group and the bridging carbonyl O atom.

| S-EPMC2983753 | biostudies-literature

(2,7-Dimeth-oxy-naphthalen-1-yl)(3-nitro-phen-yl)methanone.

Project description:The title compound, C(19)H(15)NO(5), has an intra-molecular C-H?O=C hydrogen bond between a naphthalene H atom and the O atom of the carbonyl group. The inter-planar angle between the naphthalene ring system and the benzene ring is 69.59?(5)°. The dihedral angle between the bridging carbonyl C-C(=O)-C plane and the naphthalene ring system is 61.02?(6)°, which is far larger than that between the bridging carbonyl plane and the benzene ring [12.68?(7)°]. The nitro group is slightly out of the plane of the benzene ring [O-N-C-C torsion angle = 4.97?(17)°]. In the crystal, the packing is mainly stabilized by C-H?O inter-actions between an H atom of the benzene ring and an O atom of the nitro group.

| S-EPMC3009278 | biostudies-literature

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