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8-Meth-oxy-4-(4-methoxy-phen-yl)quinoline.

ABSTRACT: In the title compound, C(17)H(15)NO(2), the dihedral angle between the quinoline and benzene ring systems is 62.17 (1)°. In the crystal, zigzag chains propagating in c are linked by C-H⋯O hydrogen bonds, and weak C-H⋯π inter-actions link the chains.

SUBMITTER: Llovera L

PROVIDER: S-EPMC2979989 | biostudies-literature |

REPOSITORIES: biostudies-literature

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8-{[3-(3-Meth-oxy-phen-yl)-1,2,4-oxa-diazol-5-yl]meth-oxy}quinoline monohydrate.

Project description:In the title hydrate, C19H15N3O3·H2O, the three aromatic groups in the quinoline derivative are close to coplanar: the central oxa-diazole fragment makes dihedral angles of 15.7?(2)° with the benzene ring and 5.30?(14)° with the quinoline ring system. In the crystal, the organic mol-ecules are connected with water mol-ecules by pairs of O-H?N hydrogen bonds involving the quinoline and oxa-diazole N atoms. The mol-ecules form stacks along the a axis, neighboring mol-ecules within each stack being related by inversion and the shortest distance between the centroids of the oxa-diazole and pyridine rings being 3.500?(2)?Å. Mol-ecules from neighboring stacks are linked by weak C-H?O hydrogen bonds, forming a three-dimensional structure.

| S-EPMC3648286 | biostudies-literature

6-Chloro-2-(4-meth-oxy-phen-yl)-4-phenyl-quinoline.

Project description:In the title compound, C22H16ClNO, the quinoline ring system makes dihedral angles of 56.30?(6) and 7.93?(6)°, respectively, with the adjacent phenyl and benzene rings. The dihedral angle between these phenyl and benzene rings is 56.97?(8)°. In the crystal, weak C-H?? and ?-? [centroid-centroid distances of 3.7699?(9) and 3.8390?(9)?Å] inter-actions link the mol-ecules into a layer parallel to the ab plane.

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Methyl 3,5-bis-[(4-hydroxy-methyl-2-methoxy-phen-oxy)meth-yl]benzoate.

Project description:In the title compound, C(26)H(28)O(8), the central aromatic ring forms dihedral angles of 24.32?(11) and 80.19?(7)° with the two adjoining vanillyl alcohol rings. In the crystal, O-H?O hydrogen bonds connect the mol-ecules, forming a hydrogen-bonded sheet-like motif extended in the ab plane.

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1-(2-Meth-oxy-phen-yl)-2-{[2-(2-meth-oxy-phen-yl)hydrazinyl-idene](nitro)-meth-yl}diazene.

Project description:In the title compound, C(15)H(15)N(5)O(4), a nitro-formazan derivative, the formazan unit is essentially planar with an r.m.s. deviation of 0.0204?(6)?Å and adopts a closed syn,s-cis configuration with an intra-molecular N-H?N hydrogen bond. The formazan plane makes dihedral angles of 4.32?(5) and 24.35?(5)° with the benzene rings. The dihedral angle between the formazan plane and the nitro group is 12.58?(8)°. In the crystal, C-H?O inter-actions connect the mol-ecules into an inversion dimer.

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2-Meth-oxy-imino-2-{2-[(2-methyl-phen-oxy)meth-yl]phen-yl}ethanol.

Project description:In the title compound, C(17)H(19)NO(3), the dihedral angle between the benzene rings is 68.0?(1)°. The C-O-C-C torsion angle of the atoms joining these rings is 179.7?(2)°. The atoms of the methanol group were refined as disordered over two sets of sites with fixed occupancies of 0.86 and 0.14. The H atoms of the hy-droxy group in the major component are disordered over a further two sets of sites with equal occupancies. This is a necessary arrangement to allow for hydrogen bonding without unrealistic H?H contacts. In the crystal, O-H?N and O-H?O hydrogen bonds connect mol-ecules into chains along [001].

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4-(3-Fluoro-4-meth-oxy-phen-yl)-1-(4-meth-oxy-phen-yl)-5-(3,4,5-trimeth-oxy-phen-yl)-1H-imidazole.

Project description:In the title mol-ecule, C(26)H(25)FN(2)O(5), the fluoro-meth-oxy-, meth-oxy- and trimeth-oxy-substituted benzene rings form dihedral angles of 12.65?(2), 84.15?(2) and 55.67?(2)°, respectively, with the imidazole ring. The crystal structure is stabilized weak inter-molecular C-H?F and C-H?O hydrogen bonds.

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3-Meth-oxy-2-[(E)-(4-meth-oxy-phen-yl)imino-meth-yl]phenol.

Project description:The title compound, C(15)H(15)NO(3), adopts the enol-imine tautomeric form. The two rings are twisted with respect to each other, making a dihedral angle of 44.08?(5)°. The 3-methoxy-2-[(E)-(4-methoxyphenyl)-iminomethyl]phenol unit is almost planar, the largest deviation from the mean plane being 0.047?(2)?Å. Such a planar conformation might be related to the occurrence of an intra-molecular O-H?N hydrogen bond. In the crystal, inter-molecular C-H?O hydrogen bonds link the mol-ecules into sheets parallel to (010). These sheets are inter-connected by weak C-H?? inter-actions.

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2-Meth-oxy-N-[5-(2-methoxy-phen-yl)-1,3,4-thia-diazol-2-yl]benzamide hemi-hydrate.

Project description:In the mol-ecule of the title compound, C(17)H(15)N(3)O(3)S·0.5H(2)O, the thia-diazole ring is oriented with respect to the two 2-methoxy-phenyl rings at dihedral angles of 3.70?(3) and 1.74?(2)°. An intra-molecular N-H?O hydrogen bond results in the formation of a planar six-membered ring, which is oriented with respect to the thia-diazole ring at a dihedral angle of 1.33?(3)°. Thus, all of the rings are nearly coplanar. In the crystal structure, inter-molecular O-H?N and C-H?O hydrogen bonds link the mol-ecules.

| S-EPMC2962244 | biostudies-literature

Crystal structure of ethyl 2-(2,4,5-tri-meth-oxy-phen-yl)quinoline-4-carboxyl-ate.

Project description:In the title compound, C21H21NO5, the dihedral angle between the quinoline ring system (r.m.s. deviation = 0.028 Å) and the tri-meth-oxy-benzene ring is 43.38 (5)°. The C atoms of the meth-oxy groups deviate from their attached benzene ring by -0.396 (2), -0.049 (2) and 0.192 (2) Å for the ortho-, meta- and para-substituents, respectively. The pendant ethyl chain is disordered over two orientations in a 0.527 (5):0.473 (5) ratio. A short intra-molecular C-H⋯O contact closes an S(6) ring. In the crystal, inversion dimers linked by pairs of weak C-H⋯O inter-actions generate R 2 (2)(6) loops. The dimers are linked by further C-H⋯O inter-actions to generate [1-10] chains.

| S-EPMC4518944 | biostudies-literature

(E)-1-[2-Hy-droxy-4,6-bis-(meth-oxy-meth-oxy)phen-yl]-3-[3-meth-oxy-4-(meth-oxy-meth-oxy)phen-yl]prop-2-en-1-one.

Project description:The title compound, C(22)H(26)O(9), crystallizes with two independent mol-ecules in the asymmetric unit in which the dihedral angles between the two benzene rings are 21.4?(2) and 5.1?(2)°. An intra-molecular O-H?O hydrogen bond occurs in each mol-ecule. Inter-molecular C-H?O hydrogen bonds stabilize the crystal structure.

| S-EPMC3247344 | biostudies-literature

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