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2-[(2,4-Dimethyl-phen-yl)imino-meth-yl]-6-methyl-phenol.

ABSTRACT: The title compound, C(16)H(17)NO, is a Schiff base which adopts the phenol-imine tautomeric form in the solid state. The mol-ecule is almost planar, with a dihedral angle of 4.61 (4)° between the aromatic rings. The molecular structure is stabilized by an intramolecular O-H⋯N hydrogen bond which generates a six membered ring.

SUBMITTER: Tanak H

PROVIDER: S-EPMC2969980 | biostudies-literature |

REPOSITORIES: biostudies-literature

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2-[(E)-(2,4-Dimethyl-phen-yl)imino-meth-yl]phenol.

Project description:The asymmetric unit of the title compound, C(15)H(15)NO, contains two independent mol-ecules, both of which exist in trans configurations with respect to the C=N bonds [1.278?(2) and 1.279?(2)?Å]. In each mol-ecule, intra-molecular O-H?N hydrogen bonds generate S(6) ring motifs. In one mol-ecule, the benzene rings form a dihedral angle of 13.38?(9)°, while in the other mol-ecule the dihedral angle is 30.60?(10)°. In the crystal, the two independent mol-ecules are linked via weak inter-molecular C-H?O hydrogen bonds.

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2-[(2,4-Dimethyl-phen-yl)imino-meth-yl]-3,5-dimethoxy-phenol.

Project description:X-ray analysis reveals that the title Schiff base compound, C(17)H(19)NO(3), possesses both OH and NH tautomeric character in its mol-ecular structure. The occupancies of the enol and keto tautomers are 0.62?(3) and 0.38?(3), respectively. The presence of the minor keto form could not be confirmed from the IR spectrum. The mol-ecule is approximately planar, the dihedral angle between the planes of the two aromatic rings being 6.97?(8)°. The mol-ecular structure of the major component is stabilized by an intra-molecular O-H?N hydrogen bond, which generates an S(6) ring motif (N-H?O hydrogen bond in the minor component).

| S-EPMC2969358 | biostudies-literature

2,4-Di-bromo-6-{[(5-chloro-2-methyl-phen-yl)imino]-meth-yl}phenol.

Project description:In the mol-ecular structure of the title Schiff base, C14H10Br2ClNO, the chloro-phenyl ring and di-bromo-phenol ring are almost coplanar; the dihedral angle between the planes of the two rings is 10.50 (18)°. There is an intra-molecular O-H⋯N hydrogen bond, with an O⋯N distance of 2.576 (4)Å. The crystal structure is stabilized by π-π stacking of neighbouring aromatic rings along the b-axis direction [centroid-centroid distance = 3.6896 (5) Å].

| S-EPMC3770443 | biostudies-literature

2-[(E)-(2,3-Dimethyl-phen-yl)imino-meth-yl]phenol.

Project description:In the title compound, C(15)H(15)NO, the almost planar 2,3-dimethyl-aniline unit and the salicyl-aldehyde group (r.m.s. deviations of 0.0156 and 0.0109 Å, respectively) are oriented at a dihedral angle of 43.69 (9)° with respect to each other. An S(6) ring motif is formed due to intra-molecular O-H⋯N hydrogen bonding. In the crystal, C-H⋯π inter-actions occur between the 2,3-dimethyl-aniline unit and the salicyl-aldehyde group, where the CH is from the o-methyl group.

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4-[(E)-(4-Methyl-phen-yl)imino-meth-yl]phenol.

Project description:In the title compound, C(14)H(13)NO, the two rings show significant deviation from coplanarity, with a dihedral angle between the two planes of 49.40 (5)°. The hy-droxy group is involved in an inter-molecular O-H⋯N hydrogen bond, forming an extended one-dimensional zigzag chain along (001).

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(E)-2-[(2,4-Dichloro-phen-yl)imino-methyl]-6-methyl-phenol.

Project description:The title compound, C(14)H(11)Cl(2)NO, is a Schiff base which adopts the phenol-imine tautomeric form in the solid state. There are two mol-ecules in the asymmetric unit. Head-to-tail π-π inter-actions [centroid-to-centroid distances of 3.682 (2), 3.708 (2), 3.904 (2) and 3.910 (2) Å] between adjacent mol-ecules produce two symmetry-independent infinite chains running along the b axis.

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4-[(3-Chloro-2-methyl-phen-yl)imino-meth-yl]phenol.

Project description:In the title compound, C(14)H(12)ClNO, the dihedral angle between the aromatic rings is 39.84?(7)°. In th crystal, mol-ecules are connected by O-H?N hydrogen bonds into chains parallel to [001]. In addition, a C-H?? contact occurs.

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4-Fluoro-2-[(3-methyl-phen-yl)imino-meth-yl]phenol.

Project description:The title compound, C(14)H(12)FNO, crystallizes as the trans phenol-imine tautomer. The two benzene rings are essentially coplanar, being inclined to one another by 9.28?(7)°. This is at least in part due to the intra-molecular O-H?N hydrogen bond between the hy-droxy O atom and the imine N atom. The crystal structure is stabilized by an array of weak C-H?O and C-H?F inter-actions, which link the mol-ecules into a stable three-dimensional network.

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2-[(2-Bromo-phen-yl)imino-meth-yl]-6-methyl-phenol.

Project description:In the title compound, C(14)H(12)BrNO, is a Schiff base which adopts the phenol-imine tautomeric form in the solid state. The dihedral angle between the two aromatic rings is 34.26 (9)° and an intra-molecular O-H⋯N hydrogen bond generates an S(6) ring.

| S-EPMC3009115 | biostudies-literature

4-Bromo-2-{(E)-[(3,4-dimethyl-phen-yl)imino]-meth-yl}phenol.

Project description:In the title compound, C(15)H(14)BrNO, the dihedral angle between the aromatic rings is 4.10 (11)° and the mol-ecule is close to planar (r.m.s. deviation for the non-H atoms = 0.053 Å). An intra-molecular O-H⋯N hydrogen bond closes an S(6) ring. In the crystal, very weak C-H⋯π inter-actions are observed.

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