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2,4-Dihydr-oxy-N'-(2-hydr-oxy-4-methoxy-benzyl-idene)benzohydrazide.

ABSTRACT: In the title compound, C(15)H(14)N(2)O(5), the dihedral angle between the two benzene rings is 4.3?(3)° and the mol-ecule adopts an E configuration with respect to the C=N bond. Intra-molecular O-H?N and N-H?O hydrogen bonds are observed. In the crystal structure, the mol-ecules are linked through inter-molecular N-H?O and O-H?O hydrogen bonds to form layers parallel to the ac plane.

SUBMITTER: Han YY

PROVIDER: S-EPMC2979259 | biostudies-literature | 2010 Apr

REPOSITORIES: biostudies-literature

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2,4-Dihydr-oxy-N'-(2-hydr-oxy-4-methoxy-benzyl-idene)benzohydrazide.

Han You-Yue YY Zhao Qiu-Rong QR

Acta crystallographica. Section E, Structure reports online 20100410 Pt 5

In the title compound, C(15)H(14)N(2)O(5), the dihedral angle between the two benzene rings is 4.3 (3)° and the mol-ecule adopts an E configuration with respect to the C=N bond. Intra-molecular O-H⋯N and N-H⋯O hydrogen bonds are observed. In the crystal structure, the mol-ecules are linked through inter-molecular N-H⋯O and O-H⋯O hydrogen bonds to form layers parallel to the ac plane. ...[more]

PMID: 21579102

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2,4-Dihydr-oxy-N'-(4-methoxy-benzyl-idene)benzohydrazide.

Project description:The mol-ecule of the title compound, C(15)H(14)N(2)O(4), displays a trans configuration with respect to the hydrazide C=N bond. The dihedral angle between the two benzene rings is 15.0?(2)°. In the crystal structure, mol-ecules are linked through inter-molecular O-H?N and O-H?O hydrogen bonds, forming layers parallel to the ab plane; an intramolecular N-H?O hydrogen bond is also present.

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(E)-2,4-Dihydr-oxy-N'-(2-hydr-oxy-3-meth-oxy-5-nitro-benzyl-idene)benzohydrazide dihydrate.

Project description:The asymmetric unit of the title compound, C(15)H(13)N(3)O(7)·2H(2)O, consists of a hydrazone mol-ecule and two solvent water mol-ecules. The mol-ecule adopts an E configuration with respect to the C=N bond. It is relatively planar, with a dihedral angle between the two benzene rings of 2.6?(1)°. There are intra-molecular O-H?N and O-H?O hydrogen bonds in the hydrazone mol-ecule. In the crystal structure, symmetry-related mol-ecules are linked through inter-molecular N-H?O and O-H?O hydrogen bonds to form a three-dimensional network.

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4-Hydr-oxy-N'-(4-methoxy-benzyl-idene)benzohydrazide.

Project description:The title compound, C(15)H(14)N(2)O(3), was synthesized by the reaction of 4-methoxy-benzaldehyde with 4-hydroxy-benzohydrazide in methanol. The mol-ecule adopts an E configuration about the C=N bond. The two benzene rings make a dihedral angle of 46.6?(2)°. In the crystal structure, mol-ecules are linked into a two-dimensional network parallel to (001) through O-H?O and N-H?O hydrogen bonds.

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Project description:In the title compound, C(16)H(16)N(2)O(4), the dihedral angle between the two benzene rings is 8.7?(2)°. The mol-ecule adopts an E configuration about the C=N bond, with an intra-molecular O-H?N hydrogen bond involving the hydr-oxy substituent and the hydrazide N atom. In the crystal structure, adjacent mol-ecules are linked through inter-molecular N-H?O hydrogen bonds, forming chains propagating in the b-axis direction.

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N'-[(E)-4-Hydr-oxy-3-methoxy-benzyl-idene]benzohydrazide.

Project description:In the title compound, C(15)H(14)N(2)O(3), the phenyl ring is disordered over two set of sites with an occupancy ratio of 0.810 (3):0.190 (3); the dihedral angle between the two components is 72.3 (4)°. The benzene and phenyl rings are oriented at dihedral angles of 69.18 (8) and 26.0 (5)° (major and minor orientations, respectively), and an intra-molecular O-H⋯O hydrogen bond occurs. In the crystal, mol-ecules are linked by N-H⋯O, O-H⋯O and C-H⋯O inter-actions, generating a three-dimensional network.

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Project description:In the title compound, C(16)H(16)N(2)O(4)·H(2)O, the dihedral angle between the two aromatic rings is 19.6?(2)°. In the crystal structure, mol-ecules are linked into a three-dimensional network by inter-molecular N-H?O, O-H?N and O-H?O hydrogen bonds.

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(E)-4-Hydr-oxy-N'-(2-hydr-oxy-4-methoxy-benzyl-idene)benzohydrazide monohydrate.

Project description:The Schiff base mol-ecule of the title compound, C(15)H(14)N(2)O(4)·H(2)O, adopts a trans configuration with respect to the C=N double bond; the Schiff base itself is almost planar (r.m.s. deviation for all non-H atoms = 0.040 Å). The amido N atom is the hydrogen-bond donor to the water mol-ecule, which is the hydrogen-bond donor to the hydr-oxy groups of two neighboring mol-ecules. One of the hydroxyl groups acts as an intra-molecular and the other as an inter-molecular hydrogen-bond donor.

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N'-(5-Bromo-2-hydr-oxy-3-methoxy-benzyl-idene)-4-hydr-oxy-3-methoxy-benzohydrazide dihydrate.

Project description:In the title compound, C(16)H(15)BrN(2)O(5)·2H(2)O, the dihedral angle between the two aromatic rings is 2.9 (2)° and an intra-molecular O-H⋯N hydrogen bond is observed. One of the water mol-ecule is disordered over two positions, with occupancies of 0.83 (3) and 0.17 (3). In the crystal structure, mol-ecules are linked into a three-dimensional network by inter-molecular O-H⋯O, O-H⋯(O,O), O-H⋯N and N-H⋯O hydrogen bonds. π-π inter-actions involving Br-substituted benzene rings, with a centroid-centroid distance of 3.552 (3) Å are also observed.

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Project description:In the title compound, C(16)H(16)N(2)O(4)·H(2)O, the dihedral angle between the two benzene rings is 12.4?(2)° and the mol-ecule adopts an E configuration with respect to the C=N bond. There are intra-molecular O-H?N and O-H?O hydrogen bonds in the hydrazone mol-ecule, which both generate S(6) rings. In the crystal structure, mol-ecules are linked by N-H?O and O-H?O hydrogen bonds, forming layers parallel to the ab plane. The crystal studied was a non-merohedral twin with a domain ratio of 0.887?(3):0.113?(3).

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N'-(5-Hydr-oxy-2-nitro-benzyl-idene)-2-methoxy-benzohydrazide.

Project description:The asymmetric unit of the title compound, C(15)H(13)N(3)O(5), contains two independent mol-ecules. Each mol-ecule displays an E configuration with respect to its C=N double bond. The dihedral angles between the two benzene rings are 11.1?(2) and 10.9?(2)° in the two mol-ecules. In the crystal structure, mol-ecules are linked through inter-molecular O-H?O hydrogen bonds, forming chains running along the a axis.

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