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Crystal structure of (E)-1-{[(3,5-di-methyl-phen-yl)imino]-meth-yl}naphthalen-2-ol.

ABSTRACT: The title compound, C19H17NO, has an E conformation about the N=C bond. The mol-ecule is relatively planar, with the benzene ring and naphthalene ring plane being inclined to one another by 4.28 (10)°. There is an intra-molecular O-H⋯N hydrogen bond generating an S(6) ring motif. In the crystal, mol-ecules are linked via C-H⋯O hydrogen bonds, forming chains propagating along [100]. Within the chains there are π-π inter-actions involving the benzene ring and the naphthalene ring system of an adjacent mol-ecule [inter-centroid distance = 3.6405 (14) Å].

SUBMITTER: Abu-Dief AM

PROVIDER: S-EPMC4518976 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Crystal structure of 1-{(E)-[(3,4-di-chloro-phen-yl)imino]-meth-yl}naphthalen-2-ol.

Project description:In the title compound, C17H11Cl2NO, the dihedral angle between the planes of the naphthalene ring system and the benzene ring is 28.88 (11)°. The main twist in the mol-ecule occurs about the N-Cb (b = benzene ring) bond, as indicated by the C=N-Cb-Cb torsion angle of 31.0 (4)°. An intra-molecular O-H⋯N hydrogen bond closes an S(6) ring. In the crystal, inversion dimers linked by pairs of very weak C-H⋯O inter-actions generate R 2 (2)(16) loops.

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(E)-1-[(3-Bromo-phen-yl)imino-meth-yl]naphthalen-2-ol.

Project description:The title compound, C(17)H(12)BrNO, exists in an enol-imine form and the mol-ecular structure features an intra-molecular O-H⋯N hydrogen bond. The dihedral angle between the benzene ring and the naphthalene ring system is 17.27 (15)°.

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Project description:The stereochemistry and regiochemistry of the title compound, C18H18O2, were determined by the X-ray analysis. There are two independent mol-ecules in the asymmetric unit in which the dihedral angles between the benzene rings are 88.31?(4) and 86.27?(4)°. The cyclo-hexene rings are in half-chair conformations. In the crystal, O-H?O hydrogen bonds link alternating types of mol-ecules into chains along [010] with graph-set C 2 (2)(4).

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Project description:The title compound, C18H11BrF3NO2, crystallizes in the phenol-imine tautomeric form, with a strong intra-molecular O-H⋯N hydrogen bond. The dihedral angle between the naphthalene ring system and the benzene ring is 28.54 (10)°.

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1-{(E)-[(2-Fluoro-5-nitro-phen-yl)imino]-meth-yl}naphthalen-2-ol.

Project description:The title mol-ecule, C17H11FN2O3, is nearly planar [maximum deviation = 0.197 (1) Å] and the mol-ecular conformation is stabilized by an N-H⋯O hydrogen bond forming an S(6) ring motif. The H atom of the intra-molecular hydrogen bond was found to be disordered over two sites and thus both the hy-droxy and keto tautomers are simultaneously present in the solid. Refinement of the occupancy of this site suggests that the hy-droxy form is the major component [occupancy refined to 0.59 (3):0.41 (3)]. Bond lengths are also largely consistent with dominance of the hy-droxy form. In the crystal, mol-ecules are linked by C-H⋯O hydrogen bonds, forming layers parallel to (101). π-π stacking inter-actions [centroid-centroid distances = 3.5649 (9) and 3.7579 (9) Å] inter-connect these layers.

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Project description:In the title compound, C(23)H(25)NO, an intra-molecular O-H?N hydrogen bond defines the mol-ecular conformation; the naphthol mean plane and the benzene ring form a dihedral angle of 75.8?(2)°. The piperidine ring adopts a chair conformation. The crystal packing exhibits no short inter-molecular contacts.

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Crystal structure of 4-chloro-2-{(E)-[(3,4-di-methyl-phen-yl)imino]-meth-yl}phenol.

Project description:In the title compound, C15H14ClNO, which is isostructural with its bromo analogue [Tahir et al. (2012 ▶). Acta Cryst., E68, o2730], the dihedral angle between the planes of the aromatic rings is 2.71 (7)° and an intra-molecular O-H⋯N hydrogen bond closes an S(6) ring. In the crystal, extremely weak C-H⋯π inter-actions link the mol-ecules into a three-dimensional network.

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Crystal structure of (E)-5-di-ethyl-amino-2-({[4-(di-methyl-amino)-phen-yl]imino}-meth-yl)phenol.

Project description:The title Schiff base compound, C19H25N3O, is approximately planar, with a dihedral angle of 9.03 (13)° between the planes of the aromatic rings, and has an E conformation about the N=C bond. The mol-ecular structure is stabilized by an intra-molecular O-H⋯N hydrogen bond, with an S(6) ring motif. In the crystal, mol-ecules are linked by C-H⋯π inter-actions, forming sheets parallel to the bc plane.

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