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N'-[(E)-4-Benz-yloxy-2-hy-droxy-benzyl-idene]-4-nitro-benzohydrazide monohydrate.

ABSTRACT: The title compound, C(21)H(17)N(3)O(5)·H(2)O, exists in the keto form with an E conformation with respect to the azomethine double bond. The twist angles between the aromatic rings are in the range 4.67?(10)-17.54?(10)°. A water mol-ecule of solvation is present in the lattice. A conventional intra-molecular O-H?N hydrogen bond increases the rigidity of the mol-ecule. Inter-molecular O-H?O, N-H?O and C-H?O hydrogen-bonding inter-actions establish a supra-molecular linkage among the mol-ecules in the crystal structure. There are also C-H?? inter-actions present.

SUBMITTER: Joseph B

PROVIDER: S-EPMC3344544 | biostudies-literature | 2012 May

REPOSITORIES: biostudies-literature

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N'-[(E)-4-Benz-yloxy-2-hy-droxy-benzyl-idene]-4-nitro-benzohydrazide monohydrate.

Joseph Bibitha B Sithambaresan M M Kurup M R Prathapachandra MR

Acta crystallographica. Section E, Structure reports online 20120418 Pt 5

The title compound, C(21)H(17)N(3)O(5)·H(2)O, exists in the keto form with an E conformation with respect to the azomethine double bond. The twist angles between the aromatic rings are in the range 4.67 (10)-17.54 (10)°. A water mol-ecule of solvation is present in the lattice. A conventional intra-molecular O-H⋯N hydrogen bond increases the rigidity of the mol-ecule. Inter-molecular O-H⋯O, N-H⋯O and C-H⋯O hydrogen-bonding inter-actions establish a supra-molecular linkage among the mol-ecules in ...[more]

PMID: 22590306

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N'-[(E)-4-Benz-yloxy-2-hy-droxy-benzyl-idene]benzohydrazide.

Project description:The title compound, C(21)H(18)N(2)O(3), exists in the E conformation with respect to the azomethane C=N double bond. The central benzene ring is almost coplanar with one of the substituent benzene rings [dihedral angle = 1.74 (5)°] and is approximately orthogonal to the other benzene ring of the mol-ecule [dihedral angle = 86.61 (7)°]. An intra-molecular O-H⋯N hydrogen bond occurs. The crystal packing is dominated by N-H⋯O hydrogen bonds, which lead to an infinite chain running parallel to [010].

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N'-[(E)-4-Benz-yloxy-2-hy-droxy-benzyl-idene]-4-nitro-benzohydrazide di-methyl-formamide monosolvate.

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2-Hy-droxy-N'-(4-hy-droxy-3-nitro-benzyl-idene)benzohydrazide.

Project description:The title compound, C(14)H(11)N(3)O(5), crystallized with two independent mol-ecules per asymmetric unit. Each mol-ecule assumes an E configuration with respect to the methyl-idene unit. Intra-molecular O-H⋯O and N-H⋯O hydrogen bonds are present in each mol-ecule and they are linked by an O-H⋯O hydrogen bond. The dihedral angles between the mean planes of the two benzene rings are 4.45 (16) and 1.7 (2)° in the two mol-ecules. The crystal structure is stabilized by inter-molecular O-H⋯O and N-H⋯O hydrogen bonds.

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Project description:The mol-ecule of the title compound, C(14)H(11)N(3)O(5), assumes an E configuration with respect to the methyl-idene unit. An intra-molecular O-H⋯O hydrogen bond is present in the mol-ecule. The dihedral angle between the mean planes of the two benzene rings is 5.46 (15)°. The crystal structure is stabilized by inter-molecular O-H⋯O, O-H⋯N, and N-H⋯O hydrogen bonds.

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N'-(3-Hy-droxy-benzyl-idene)-4-nitro-benzohydrazide.

Project description:The title mol-ecule, C(14)H(11)N(3)O(4), is approximately planar, with an inter-planar angle between the two benzene rings of 5.8?(2)°. In the crystal, four mol-ecules are linked by an R(4) (4)(12) motif with pairs of strong O-H?O and N-H?O hydrogen bonds. The motif is situated about the crystallographic centres of symmetry and it is composed of two pairs of parallel mol-ecules. This quadruplet of mol-ecules is further extended by symmetry-equivalent hydrogen bonds to form layers parallel to the (10) plane. In addition to the hydrogen bonds, there is also a weak ?-? inter-action between the benzene rings.

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Project description:The title compound, C(14)H(11)N(3)O(4), was obtained by a condensation reaction between 3-nitro-benzaldehyde and 4-hy-droxy-benzohydrazide. The whole mol-ecule is approximately planar, with a dihedral angle of 9.2 (3)° between the benzene rings. The mol-ecule displays an E conformation about the C=N bond. In the crystal, mol-ecules are linked via N-H⋯O, O-H⋯O and O-H⋯N hydrogen bonds, generating sheets parallel to the bc plane.

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(E)-N'-(3-Hy-droxy-benzyl-idene)-3-nitro-benzohydrazide.

Project description:The title compound, C(14)H(11)N(3)O(4), was prepared by the reaction of 3-nitro-benzohydrazide with 3-hy-droxy-benzalde-hyde. The mol-ecule adopts an E configuration about the C=N bond. The dihedral angle between the two benzene rings is 32.3?(2)°. In the crystal, the mol-ecules are linked through inter-molecular N-H?O, O-H?N, and O-H?O hydrogen bonds, forming chains in the a-axis direction.

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(E)-N'-(4-Hy-droxy-benzyl-idene)-2-nitro-benzohydrazide.

Project description:In the title compound, C(14)H(11)N(3)O(4), the two benzene rings form a dihedral angle of 45.3?(3)°. The nitro group is twisted out of the attached ring by a dihedral angle of 37.5?(3)°. In the crystal structure, mol-ecules are linked into a two-dimensional network parallel to (100) by O-H?O and N-H?O hydrogen bonds.

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(E)-N'-(4-Hy-droxy-benzyl-idene)-3-nitro-benzohydrazide.

Project description:The mol-ecule of the title compound, C(14)H(11)N(3)O(4), assumes an E conformation about the C=N double bond. The benzene rings form a dihedral angle of 3.9 (2)°. The crystal structure is stabilized by N-H⋯O, O-H⋯N, O-H⋯O and C-H⋯O hydrogen bonds, forming layers parallel to (101). In addition, intra-layer π-π stacking inter-actions [centroid-centroid distance = 3.635 (2) Å] are observed.

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