2-[(2,4-Dimethylphenyl)iminomethyl]-3,5-dimethoxyphenol
نویسندگان
چکیده
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).
منابع مشابه
2-[(4-Ethylphenyl)iminomethyl]-3,5-dimethoxyphenol
The title compound, C(17)H(19)NO(3), adopts the phenol-imine tautomeric form, with a resonance-assisted O-H⋯N intra-molecular hydrogen bond [O⋯N = 2.551 (3) Å]. The dihedral angle between the two benzene rings is 45.42 (7)°. The two meth-oxy groups are coplanar with the attached benzene ring [C-O-C-C torsion angles = -1.1 (5) and 3.2 (4)°].
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There are two independent mol-ecules in the asymmetric unit of the title compound, C(15)H(14)BrNO(3), with very similar geometrical parameters. Each mol-ecule adopts the phenol-imine tautomeric form, with strong intra-molecular O-H⋯N hydrogen bonds. The two mol-ecules are non-planar, the dihedral angles between the two aromatic rings being are 24.6 (2) and 30.30 (13)°.
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The title compound, C(19)H(15)Cl(2)N(3)OS(2), was synthesized by the reaction of N-(2,4-dichloro-phen-yl)-5-(3,5-dimethyl-phen-yl)-1,3,4-thia-diazol-2-amine and mercaptoacetic acid. The thia-zolidinone ring adopts a twist conformation. The 2,4-dichloro-phenyl ring is almost perpendicular to the thia-diazole ring, the dihedral angle being 82.8 (2)°. The 3,5-dimethyl-phenyl ring is nearly coplana...
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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.
متن کامل2-[(E)-(2,4-Dimethylphenyl)iminomethyl]phenol
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 an...
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