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(E)-N'-(3-Fluoro-benzyl-idene)-2-hydroxy-benzohydrazide.

ABSTRACT: The title compound, C(14)H(11)FN(2)O(2), adopts an E or trans configuration with respect to the C=N bond. An intra-molecular N-H⋯O hydrogen bond contributes to the relatively planarity of the mol-ecular conformation; the two benzene rings are inclined to one another by 12.5 (2)°. In the crystal structure, inter-molecular O-H⋯O hydrogen bonds link the mol-ecules into chains running parallel to the c axis.

SUBMITTER: Xu HJ

PROVIDER: S-EPMC2968967 | biostudies-literature |

REPOSITORIES: biostudies-literature

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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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N'-(2-Chloro-benzyl-idene)-2-fluoro-benzohydrazide.

Project description:The title hydrazone compound, C(14)H(10)ClFN(2)O, adopts an E configuration about the C=N double bond. The dihedral angle between the two substituted benzene rings is 11.6?(2)°. The F atom is disordered over two sites with occupancies of 0.488?(2) and 0.512?(2). In the crystal, mol-ecules are linked through inter-molecular N-H?O hydrogen bonds, forming chains along the a axis. C-H?F and C-H?O inter-actions also occur.

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Project description:The mol-ecule of the title compound, C(14)H(9)Cl(2)FN(2)O, exists in a trans configuration with respect to the methyl-idene unit and the benzene rings form a dihedral angle of 8.1?(2)°. In the crystal, mol-ecules are linked through N-H?O hydrogen bonds into C(4) chains propagating in [100].

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

Project description:The title mol-ecule, C(14)H(11)ClN(2)O(2), adopts a trans configuration with respect to the C=N double bond. An intra-molecular N-H⋯O hydrogen bond contributes to mol-ecular conformation and the two benzene rings form a dihedral angle of 17.9 (8)°. In the crystal structure, inter-molecular O-H⋯O hydrogen bonds link the mol-ecules into chains running along [10].

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

Project description:The title mol-ecule, C(14)H(11)BrN(2)O(2), displays a trans configuration about the C=N and C-N bonds. The dihedral angle between the two benzene rings is 18.5 (3)°. An intra-molecular O-H⋯N hydrogen bond is observed. In the crystal structure, the mol-ecules are linked into a chain along the c axis by N-H⋯O and C-H⋯O hydrogen bonds.

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

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(E)-N'-(2-Bromo-benzyl-idene)-2-fluoro-benzohydrazide.

Project description:The title compound, C(14)H(10)BrFN(2)O, adopts an E geometry about the C=N bond. The dihedral angle between the mean planes of the two benzene rings is 81.5?(6)°. In the crystal, mol-ecules are linked through inter-molecular N-H?O hydrogen bonds, forming chains running along the b axis.

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2-Fluoro-N'-(2-hy-droxy-benzyl-idene)benzohydrazide.

Project description:In the title compound, C(14)H(11)FN(2)O(2), an intra-molecular O-H?N hydrogen bond influences the mol-ecular conformation; the two benzene rings form a dihedral angle of 18.4?(3)°. The F atom is disordered over two positions in a 0.717?(5):0.283?(5) ratio. In the crystal, inter-molecular N-H?O hydrogen bonds link the mol-ecules into chains extending along the c axis.

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