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

ABSTRACT: The asymmetric unit of the title compound, C(15)H(13)BrN(2)O(3)·0.5CH(3)OH, contains two Schiff base mol-ecules and a methanol mol-ecule of crystallization. The dihedral angles between the benzene rings in the two mol-ecules are 23.8?(2) and 18.6?(2)°. In the crystal structure, mol-ecules are linked through inter-molecular N-H?O, O-H?O and O-H?N hydrogen bonds, forming a three-dimensional network.

SUBMITTER: Zhou Z

PROVIDER: S-EPMC2961683 | biostudies-literature | 2008 Jun

REPOSITORIES: biostudies-literature

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

Zhou Zhi Z

Acta crystallographica. Section E, Structure reports online 20080619 Pt 7

The asymmetric unit of the title compound, C(15)H(13)BrN(2)O(3)·0.5CH(3)OH, contains two Schiff base mol-ecules and a methanol mol-ecule of crystallization. The dihedral angles between the benzene rings in the two mol-ecules are 23.8 (2) and 18.6 (2)°. In the crystal structure, mol-ecules are linked through inter-molecular N-H⋯O, O-H⋯O and O-H⋯N hydrogen bonds, forming a three-dimensional network. ...[more]

PMID: 21202927

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

Project description:The title Schiff base compound, C(15)H(13)BrN(2)O(3), is derived from the condensation of 5-bromo-2-methoxy-benzaldehyde with 2-hydroxy-benzohydrazide in an ethanol solution. The dihedral angle between the two aromatic rings is 6.9?(9)°. The meth-oxy group is coplanar with the attached ring [C-O-C-C = 3.1?(12)°]. An intra-molecular N-H?O hydrogen bond is observed. In the crystal structure, the mol-ecules are linked into chains along the [001] direction by inter-molecular O-H?N, O-H?O and C-H?O hydrogen bonds.

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Project description:In the title compound, C(15)H(12)Cl(2)N(2)O(3)·CH(3)OH, the Schiff base mol-ecule is nearly planar, with a dihedral angle of 4.5?(2)° between the two benzene rings. An intra-molecular O-H?N hydrogen bond is observed. The methanol solvent mol-ecule is linked to the Schiff base mol-ecule through inter-molecular N-H?O and O-H?O hydrogen bonds.

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Project description:The title compound, C(15)H(12)BrClN(2)O(3), was obtained by the condensation reaction between 3-bromo-5-chloro-2-hydroxy-benzaldehyde and 2-methoxy-benzohydrazide. The mol-ecule is essentially planar, with a dihedral angle between the two benzene rings of 4.7?(2)°, and displays an E configuration about the C=N double bond. The mol-ecular conformation is stabilized by intramolecular O-H?N and N-H?O hydrogen bonds. In the crystal structure, mol-ecules are linked into zigzag chains running parallel to the c axis by inter-molecular C-H?O hydrogen bonds. The chains are further connected through aromatic ?-? stacking inter-actions with centroid-centroid distances of 3.583?(4)?Å.

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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'-(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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2-Bromo-N'-[(Z)-2-bromo-benzyl-idene]-5-methoxy-benzohydrazide.

Project description:In the title compound, C(15)H(12)Br(2)N(2)O(2), the mol-ecule adopts an E conformation about the C=N double bond and a transoid conformation about the central N-N bond, with a C(=O)-N-N-C(H) dihedral angle of 169.4?(4)°. In the crystal, mol-ecules are linked by N-H?O hydrogen bonds, leading to C(4) chains. The packing also features slipped ?-? stacking inter-actions, with a centroid-centroid separation of 3.838?(3)?Å and a slippage of 1.19?Å.

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