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[3-Hy-droxy-methyl-1,4-bis-(4-methyl-phen-yl)naphthalen-2-yl]methanol.

ABSTRACT: In the title compound, C(26)H(24)O(2), the crowded naphthalene ring system is essentially planar [maximum deviation of 0.027 (2) Å for one of the C atoms of the unsubstituted ring]. In the crystal, mol-ecules are connected by O-H⋯O hydrogen bonds into chains along the a axis. Pairs of the oppositely oriented chains are further cross-linked by O-H⋯O hydrogen bonds, forming infinte bands of alternating R(4) (4)(8) dimers and R(2) (2)(14) motifs.

SUBMITTER: Narayanan P

PROVIDER: S-EPMC3099979 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Bis(4-hy-droxy-phen-yl) 1,4-phenyl-enebiscarbamate.

Project description:The title compound, C20H16N2O6 (systematic name: 4-hy-droxy-phenyl N-{4-[(4-hy-droxy-phen-oxy-carbon-yl)amino]-phen-yl}carbamate), contains two urethane groups substituting the central benzene ring in para positions. The mol-ecule is centrosymmetric, and displays a twisted conformation for the three aromatic rings [the dihedral angle between central benzene ring and the urethane group is 33.4 (6)°, and that between the latter and the terminal ring is 65.1 (1)°]. In the crystal, a three-dimensional framework is formed through O-H⋯O and N-H⋯O hydrogen bonds involving the hy-droxy and urethane functional groups, respectively.

| S-EPMC9635426 | biostudies-literature

(2-Hy-droxy-7-meth-oxy-naphthalen-1-yl)(4-methyl-phen-yl)methanone.

Project description:In the title compound, C(19)H(16)O(3), an intra-molecular O-H?O=C hydrogen bond is formed between the hy-droxy and carbonyl groups on the naphthalene ring system, resulting in an S(6) ring. The angles between the C=O bond vector and the least-squares planes of the naphthalene ring system and the benzene ring are 27.63?(6) and 47.99?(7)°, respectively. The dihedral angle between the latter planes is 61.39?(5)°. In the crystal, two mol-ecules are connected by pairs of inter-molecular O-H?O=C hydrogen bonds, forming centrosymmetric dimers with an R(2) (2)(4) graph-set motif. The mol-ecular packing features C-H?? interactions.

| S-EPMC3009359 | biostudies-literature

[2,5-Bis(di-propyl-amino)-4-(hy-droxy-meth-yl)phen-yl]methanol.

Project description:The centrosymmetric title compound, C22H36N2O2, was prepared in five steps from diethyl succinate. The di-propyl-amino groups are almost orthogonal to the central phenyl-enedi-methanol ring [dihedral angle = 87.62 (9)°]. In the crystal, the mol-ecules are connected by O-H⋯N hydrogen bonds, forming (101) layers separated by the propyl chains.

| S-EPMC9462325 | biostudies-literature

1-[4-({4-[(E)-(2-Hy-droxy-naphthalen-1-yl)methyl-idene-amino]-phen-yl}sulfan-yl)phen-yl]ethanone.

Project description:The title Schiff base compound, C25H19NO2S, crystallizes in a statistically disordered structure comprising keto and enol tautomeric forms. In the enol form, the benzenoid arrangment is promoted by a strong intra-molecular O-H?N hydrogen bond and adopts an E conformation about the imine bond. In the keto form there is an intramolecular N-H?O hydrogen bond. In the crystal, an extended network of C-H?O hydrogen bonds stabilizes columns parallel to the c axis, forming large voids (there are four cavities of 108?Å(3) per unit cell) with highly disordered residual electron density. The SQUEEZE procedure in PLATON [Spek (2009 ?). Acta Cryst. D65, 148-155] was used to eliminate the contribution of this electron density from the intensity data, and the solvent-free model was employed for the final refinement. The contribution of this undetermined solvent was ignored in the calculation of the unit-cell characteristics.

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Bis{2,6-bis-[(2-hy-droxy-5-methyl-phen-yl)imino-meth-yl]pyridine} monohydrate.

Project description:The title compound, 2C(21)H(19)N(3)O(2)·H(2)O, was synthesized by a Schiff base condensation of 2,6-diformyl-pyridine with 2-amino-4-methyl-phenol in ethanol. In the crystal, two mol-ecules of 2,6-bis-[(2-hy-droxy-5-methyl-phen-yl)imino-meth-yl]pyridine dimer-ize via hydrogen bonding to a water mol-ecule, which lies on a twofold axis. There are also intra-molecular phenol-imine hydrogen bonds. The dimers are further linked via π-π (phen-yl-pyridine) [centroid-centroid distance = 3.707 (2) Å] and π-π edge-to-edge [3.392 (2) Å] inter-actions. The dihedral angles between the central ring and the two pendant rings are 11.46 (8) and 2.06 (8)° while the pendant rings make a dihedral angle of 10.14 (8)°.

| S-EPMC3238860 | biostudies-literature

Crystal structure of N-[(2-hy-droxy-naphthalen-1-yl)(4-methyl-phen-yl)meth-yl]acetamide.

Project description:In the title mol-ecule, C20H19NO2, the naphthalene ring system subtends a dihedral angle of 82.50 (7)° with the benzene ring and an intra-molecular N-H⋯O hydrogen bond closes an S(6) ring. In the crystal, mol-ecules are linked by O-H⋯O hydrogen bonds, which generate C(8) chains propagating in the [010] direction. The crystal structure also features weak π-π inter-actions [centroid-centroid separation = 3.7246 (10) Å].

| S-EPMC4438828 | biostudies-literature

Bis(2-hy-droxy-phen-yl)methanone.

Project description:In the title compound, C(13)H(10)O(3), a benzophenone derivative, the least-squares planes defined by the C atoms of the 2-hy-droxy-phenyl rings inter-sect at an angle of 45.49?(3)°. The substituents on the aromatic systems are both orientated towards the central O atom. Intra- as well as inter-molecular O-H?O hydrogen bonds are observed, the latter giving rise to the formation of centrosymmetric dimers. The closest centroid-centroid distance between two ?-systems is 3.7934?(7)?Å.

| S-EPMC3212291 | biostudies-literature

(2-Hy-droxy-7-meth-oxy-naphthalen-1-yl)(phen-yl)methanone.

Project description:In the mol-ecule of the title compound, C(18)H(14)O(3), there is an intra-molecular O-H?O=C hydrogen bond between the carbonyl and hy-droxy groups on the naphthalene ring system. The angles between the C=O bond vector and the least-squares planes of the naphthalene ring system and the phenyl ring are 30.58?(6) and 42.82?(7)°, respectively, while the dihedral angle between the naphthalene ring system and the phenyl ring is 58.65?(5)°. In the crystal, mol-ecules are connected by pairs of inter-molecular O-H?O=C hydrogen bonds, forming centrosymmetric dimers.

| S-EPMC2983170 | biostudies-literature

2,2'-{[2-(2-Hy-droxy-phen-yl)-4-methyl-imidazolidine-1,3-di-yl]bis-(methyl-ene)}diphenol.

Project description:The asymmetric unit in the title compound, C24H26N2O3, comprises two independent mol-ecules (A and B). In molecule A, the central 2-hydroxyphenyl ring is inclined to the mean plane of the major component of the imidazolidine ring by 84.52?(14)°, and by 68.08?(9) and 47.48?(9)° to the outer phenol rings. The later are inclined to one another by 66.76?(9)° and by 78.12?(14) and 80.20?(14)° to the imidazoline ring mean plane. In molecule B, the central 2-hydroxyphenyl ring is inclined to the mean plane of the imidazolidine ring by 73.64?(10)°, and by 75.60?(8) and 38.32?(9)° to the outer phenol rings. The later are inclined to one another by 69.47?(9)° and by 82.60?(10) and 64.26?(10)° to the imidazolidine ring mean plane. In each of the independent mol-ecules, two intra-molecular O-H?N hydrogen bond form S(6) ring motifs. In disordered mol-ecule A, the O-H groups of the 2-hy-droxy-benzyl groups are also involved in intra-molecular O-H?O hydrogen bonds, with the O atom of the hy-droxy-phenyl group acting as the acceptor. In the crystal, A molecules are linked by pairs of O-H?O hydrogen bonds forming inversion dimers. These dimers are linked to the B molecules via O-H?O hydrogen bonds forming double-layered slabs lying parallel to the bc plane.

| S-EPMC3793786 | biostudies-literature

(4-Hy-droxy-3,5-di-methyl-phen-yl)(phen-yl)methanone.

Project description:In the mol-ecule of the title compound, C15H14O2, the dihedral angle between the benzene and phenyl rings is 61.27?(8)°. In the crystal, O-H?O and weak C-H?O hydrogen bonds link the mol-ecules into chains extending along the c-axis direction.

| S-EPMC3884333 | biostudies-literature

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