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N'-(3-Chloro-benzyl-idene)-4-hy-droxy-benzohydrazide.

ABSTRACT: The mol-ecule of the title compound, C14H11ClN2O2 adopts an E conformation of the azomethine double bond and the dihedral angle between the benzene rings is 38.96?(13)°. In the crystal, mol-ecules are linked by N-H?O and O-H?O (with the ketone O atom as acceptor) and C-H?O (with the hy-droxy O atom as acceptor) hydrogen bonds, forming a three-dimensional network.

SUBMITTER: Saad SM

PROVIDER: S-EPMC3589070 | biostudies-literature | 2012 Dec

REPOSITORIES: biostudies-literature

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N'-(3-Chloro-benzyl-idene)-4-hy-droxy-benzohydrazide.

Saad Syed Muhammad SM Fatima Itrat I Perveen Shahnaz S Khan Khalid M KM Yousuf Sammer S

Acta crystallographica. Section E, Structure reports online 20121130 Pt 12

The mol-ecule of the title compound, C14H11ClN2O2 adopts an E conformation of the azomethine double bond and the dihedral angle between the benzene rings is 38.96 (13)°. In the crystal, mol-ecules are linked by N-H⋯O and O-H⋯O (with the ketone O atom as acceptor) and C-H⋯O (with the hy-droxy O atom as acceptor) hydrogen bonds, forming a three-dimensional network. ...[more]

PMID: 23476306

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3-Chloro-N'-(4-hy-droxy-benzyl-idene)benzohydrazide.

Project description:The title compound, C(14)H(11)ClN(2)O(2), was prepared by the reaction of 4-hy-droxy-benzaldehyde with 3-chloro-benzo-hydrazide in methanol. The dihedral angle between the two benzene rings is 38.2 (2)°. In the crystal, mol-ecules are linked through inter-molecular N-H⋯O, O-H⋯N and O-H⋯O hydrogen bonds, forming layers lying parallel to the bc plane.

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(E)-2-Chloro-N'-(4-hy-droxy-benzyl-idene)-benzohydrazide.

Project description:The title hydrazone mol-ecule, C(14)H(11)ClN(2)O(2), has a trans conformation with respect to the methyl-idene unit. The dihedral angle between the two benzene rings is 37.6?(3)°. In the crystal, the presence of O-H?O, O-H?N and N-H?O hydrogen bonds leads to the formation of a three-dimensional network. The title compound crystallized in the chiral ortho-rhom-bic space group P2(1)2(1)2(1) and was refined as an inversion twin [Flack parameter = -0.20?(18)].

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4-Chloro-N'-(3,5-dibromo-2-hy-droxy-benzyl-idene)benzohydrazide.

Project description:The asymmetric unit of the title compound, C(14)H(9)Br(2)ClN(2)O(2), contains two independent mol-ecules. Both mol-ecules adopt an E configuration about the C=N bond. The dihedral angles between the benzene rings are 30.0?(2) and 51.6?(2)° in the two mol-ecules. In the crystal, mol-ecules are linked through N-H?O hydrogen bonds, forming chains along the b axis. In addition, there is an intra-molecular O-H?N hydrogen bond in each mol-ecule.

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N'-(5-Chloro-2-hy-droxy-benzyl-idene)-4-meth-oxy-benzohydrazide.

Project description:The asymmetric unit of the title compound, C(15)H(13)ClN(2)O(3), contains two independent hydrazone mol-ecules. Each mol-ecule adopts an E configuration with respect to the methyl-idene unit and forms an intra-molecular O-H?N hydrogen bond. The principal difference between the two unique mol-ecules is the relative orientation of the two benzene rings, the dihedral angles between them being 4.0?(3) and 65.9?(3)°, respectively. In the crystal, mol-ecules are linked through N-H?O hydrogen bonds, forming chains running along the c axis.

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(E)-4-Amino-N'-(5-chloro-2-hy-droxy-benzyl-idene)benzohydrazide.

Project description:The title compound, C(14)H(12)ClN(3)O(2), displays an E conformation with respect to the C=N double bond. The dihedral angle between the benzene rings is 41.3?(5)°. The mol-ecular structure is stabilized by an intra-molecular O-H?N hydrogen bond. In the crystal, N-H?O and weak N-H?Cl hydrogen bonds link the mol-ecules into a three-dimensional architecture. In addition, there are weak C-H?? stacking inter-actions.

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N'-(5-Chloro-2-hy-droxy-benzyl-idene)-2-meth-oxy-benzohydrazide.

Project description:The title Schiff base compound, C(15)H(13)ClN(2)O(3), was prepared by the reaction of equimolar quanti-ties of 5-chloro-2-hy-droxy-benzaldehyde with 2-meth-oxy-benzohydrazide in a methanol solution. The dihedral angle between the two benzene rings is 20.6?(3)°. An intra-molecular O-H?N hydrogen bond may influence the mol-ecular conformation. In the crystal structure, mol-ecules form chains along the b direction via inter-molecular N-H?O hydrogen bonds which are bifurcated involving an intra-molecular N-H?O hydrogen bond.

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(E)-4-Amino-N'-(5-chloro-2-hy-droxy-benzyl-idene)benzohydrazide.

Project description:In the title hydrazide Schiff base compound, C(14)H(12)ClN(3)O(2), the conformation around the C=N double bond is E. The dihedral angle between the benzene rings is 41.57 (14) Å. An intra-molecular O-H⋯N hydrogen bond makes an S(6) ring motif. In the crystal, mol-ecules are linked by N-H⋯O (bifurcated acceptor) and N-H⋯N hydrogen bonds, forming chains along the a axis. The inter-esting feature of the crystal structure is the short inter-molecular C⋯O [3.216 (3), 3.170 (3), and 2.992 (3) Å] contacts, one of which is significantly shorter than the sum of the van der Waals radii of these atoms [3.22 Å].

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3-Chloro-N'-(4-diethyl-amino-2-hy-droxy-benzyl-idene)benzohydrazide.

Project description:The asymmetric unit of the title Schiff base compound, C(18)H(20)ClN(3)O(2), contains two independent mol-ecules. An O-H⋯N hydrogen bond contributes to the planarity of each mol-ecule: the dihedral angles between the two benzene rings are 12.8 (3) and 27.2 (3)° in the two mol-ecules. In the crystal, mol-ecules are linked through inter-molecular N-H⋯O hydrogen bonds, forming chains along the a axis.

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Project description:In the title compound, C(14)H(10)ClN(3)O(4)·2CH(4)O, the main mol-ecule is in an E configuration with respect to the methyl-idene unit. The dihedral angle between the mean planes of the two benzene rings is 1.9?(3)°. In the crystal, inter-molecular N-H?O, O-H?O and bifurcated O-H?(O, O) hydrogen bonds link the components into sheets parallel to (100). An intra-molecular O-H?O hydrogen bond is also present.

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3-Chloro-N'-(3,5-dibromo-2-hy-droxy-benzyl-idene)benzohydrazide methanol monosolvate.

Project description:The title Schiff base compound, C(14)H(9)Br(2)ClN(2)O(2)·CH(3)OH, features an intra-molecular O-H⋯N hydrogen bond, which contributes to the planarity of the mol-ecule: the dihedral angle between the two benzene rings is 4.6 (2)°. In the crystal, pairs of adjacent mol-ecules are linked through inter-molecular N-H⋯O and O-H⋯O hydrogen bonds, forming dimers. The methanol solvent mol-ecule is linked by inter-molecular O-H⋯O hydrogen bonds.

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