2-{[2-(2-Hydroxy-5-methoxybenzylidene)hydrazin-1-ylidene]methyl}-4-methoxyphenol
نویسندگان
چکیده
The title phenyl-hydrazine derivative, C16H16N2O4, has a crystallographically imposed centre of symmetry. Except for the methyl group, all non-H atoms are almost coplanar (r.m.s. deviation = 0.0095 Å). Intra-molecular O-H⋯N hydrogen bonds are observed, generating S(6) graph-set ring motifs.
منابع مشابه
2-{[2-(2-Hydroxy-3-methoxybenzylidene)hydrazin-1-ylidene]methyl}-6-methoxyphenol
The title compound, C(16)H(16)N(2)O(4), was obtained from the reaction of hydrazine hydrate and o-vanilin in absolute ethanol. The mol-ecule is almost planar (except for the methyl H atoms), with a mean deviation from the plane of 0.0259 Å. The mol-ecular structure also exhibits an approximate non-crystallographic twofold axis. Intra-molecular O-H⋯N hydrogen bonds occur. In the crystal, inter-m...
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The asymmetric unit of the title compound, C(18)H(20)N(2)O(4), contains one-half mol-ecule with an inversion center located at the centroid of the mol-ecule. In the crystal, mol-ecules are linked by C-H⋯π inter-actions, forming layers parallel to (101). An intra-molecular O-H⋯N hydrogen bond also occurs.
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The title compound, C(16)H(19)N(3)O(4)S, is almost planar, with a dihedral angle of 2.88 (9)° between the mean planes of the benzene and thia-zole rings. The mol-ecule adopts an E conformation about the two C=N bonds, with a C-N-N-C torsion angle of -177.01 (11)°. An intra-molecular C-H⋯O hydrogen bond exists between a thia-zole methyl group and the formic acid ethyl ester carbonyl O atom. In t...
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In the title compound, C(20)H(19)O(4)P, the dihedral angle between the phenyl rings is 73.3 (4)° and the dihedral angles between the benzene ring and the two phenyl rings are 43.0 (3) and 54.3 (1)°. In the crystal, O-H⋯O hydrogen bonds and weak O-H⋯O inter-actions are observed, which form a supra-molecular sheet parallel to (010).
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In the title Schiff base, C(29)H(26)N(2)O(4), the complete molecule is generated by a crystallographic twofold axis and is V-shaped. The planes of the benzene rings of the central diphenyl-methane unit make a dihedral angle of 78.11 (4)° while adjacent benzene and 5-meth-oxy-salicyl-idene rings are twisted with respect to each other by a dihedral angle of 11.84 (8)°. The Schiff base is in the e...
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