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N'-[4-(Dimethyl-amino)benzyl-idene]-3-hydroxy-benzohydrazide.

ABSTRACT: The title compound, C(16)H(17)N(3)O(2), was synthesized by the reaction of 4-dimethyl-amino-benzaldehyde with 3-hydroxy-benzoic acid hydrazide in methanol. The dihedral angle between the two benzene rings in the mol-ecule is 9.2?(2)°. In the crystal structure, mol-ecules are linked through inter-molecular O-H?O, O-H?N and N-H?O hydrogen bonds, forming layers parallel to the bc plane.

SUBMITTER: Nie Y

PROVIDER: S-EPMC2960467 | biostudies-literature | 2008 Jan

REPOSITORIES: biostudies-literature

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N'-[4-(Dimethyl-amino)benzyl-idene]benzohydrazide.

Project description:In the title mol-ecule, C(16)H(17)N(3)O, the two aromatic rings form a dihedral angle of 4.51?(18)°. In the crystal structure, inter-molecular N-H?O hydrogen bonds link mol-ecules related by translation along the a axis into ribbons.

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Project description:In the title mol-ecule, C(17)H(19)N(3)O(2), the dihedral angle between the two benzene rings is 14.05?(15)°. In the crystal, mol-ecules are linked through inter-molecular N-H?O hydrogen bonds, forming chains along b.

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4-Dimethyl-amino-N'-(4-nitro-benzyl-idene)benzohydrazide methanol monosolvate.

Project description:In the title compound, C(16)H(16)N(4)O(3)·CH(3)OH, the aromatic rings form a dihedral angle of 0.4?(2)°. The nitro group is twisted from the attached benzene ring by 7.5?(2)°. In the crystal, N-H?O and O-H?O hydrogen bonds link alternating hydrazone and methanol mol-ecules into chains in [100]. The crystal packing exhibits ?-? inter-actions between aromatic rings from neighbouring chains [centroid-centroid distances = 3.734?(3) and 3.903?(3)?Å].

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Project description:In the title compound, C(17)H(19)N(3)O(2), the two benzene rings form a dihedral angle of 89.2 (2)°. In the crystal structure, mol-ecules are linked through N-H⋯O hydrogen bonds, forming C(4) chains running along the c axis.

| S-EPMC3006873 | biostudies-literature

N'-[(Z)-4-(Dimethyl-amino)benzyl-idene]-4-nitro-benzohydrazide mono-hydrate.

Project description:In the asymmetric unit of the title compound, C(16)H(16)N(4)O(3)·H(2)O, there are two symmetry-independent hydrazide mol-ecules with almost identical geometries, and two independent water mol-ecules. The dihedral angles between the two benzene rings in the two hydrazide mol-ecules are 0.11?(5) and 0.77?(5)°. In one mol-ecule, an intra-molecular C-H?O hydrogen bond generates a ring of graph-set motif S(5). Inter-molecular N-H?O, O-H?O, O-H?N and C-H?O hydrogen bonds and ?-? stacking inter-actions between the benzene rings [centroid-centroid distances in the range 3.5021?(6)-3.6403?(6)?Å] are observed, together with O?O [2.7226?(11)?Å], O?N [2.7072?(10)?Å] and N?O [2.7072?(10)-2.8582?(12)?Å] short contacts. The hydrazine mol-ecules are stacked along the b axis and adjacent mol-ecules are linked by water mol-ecules.

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Project description:The title mol-ecule, C(16)H(15)I(2)N(3)O(2), adopts an E configuration about the C=N bond. The dihedral angle between the two benzene rings is 6.4?(2)°. An intra-molecular O-H?N hydrogen bond occurs. In the crystal, mol-ecules are linked through inter-molecular N-H?O hydrogen bonds, forming chains propagating in the c-axis direction.

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(E)-N'-[4-(Dimethyl-amino)-benzyl-idene]-4-methyl-benzohydrazide methanol monosolvate.

Project description:In the title compound, C(17)H(19)N(3)O·CH(3)OH, the hydrazone mol-ecule exists in a trans geometry with respect to the methyl-idene unit and the dihedral angle between the two substituted benzene rings is 42.6?(2)°. In the crystal, the components are linked through N-H?O and O-H?O hydrogen bonds, forming [100] chains of alternating hydrazone and methanol mol-ecules.

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4-Chloro-N'-[(Z)-4-(dimethyl-amino)benzyl-idene]benzohydrazide mono-hydrate.

Project description:In the title compound, C(16)H(16)ClN(3)O·H(2)O, the dihedral angle between the two aromatic rings is 44.58 (11)°. The N atom of the dimethyl-amino group adopts a pyramidal configuration. In the crystal structure, mol-ecules are linked into a two-dimensional network parallel to the (001) plane by inter-molecular N-H⋯O, O-H⋯N and O-H⋯O hydrogen bonds involving the water mol-ecule and C-H⋯Cl hydrogen bonds. In addition, C-H⋯π inter-actions are observed.

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N'-(5-Bromo-2-hydroxy-benzyl-idene)-3-hydroxy-benzohydrazide.

Project description:The asymmetric unit of the title compound, C(14)H(11)BrN(2)O(3), contains two crystallographically independent mol-ecules with slightly different conformations with respect to the aromatic rings; the dihedral angles between the two benzene rings in the two mol-ecules are 55.0 (7) and 16.3 (7)°. In the crystal structure, mol-ecules are linked through inter-molecular N-H⋯O, O-H⋯O and O-H⋯N hydrogen bonds, forming chains running along the a axis.

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N'-(5-Chloro-2-hydroxy-benzyl-idene)-4-hydroxy-benzohydrazide.

Project description:The title Schiff base compound, C(14)H(11)ClN(2)O(3), was prepared by the reaction of 5-chloro-salicylaldehyde and 4-hydroxy-benzohydrazide. The mol-ecule exists in a trans configuration with respect to the methyl-idene group. The dihedral angle between the two benzene rings is 40.1 (2)°. An intra-molecular O-H⋯N hydrogen bond helps to stabilize the mol-ecular conformation. In the crystal structure, mol-ecules are linked into a three-dimensional network by inter-molecular N-H⋯O and O-H⋯O hydrogen bonds.

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