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(E)-N'-(5-Bromo-2-methoxy-benzyl-idene)-4-chloro-benzohydrazide.

ABSTRACT: The title Schiff base compound, C(15)H(12)BrClN(2)O(2), crystallizes with two independent mol-ecules in the asymmetric unit. The mol-ecules adopt an E configuration with respect to the C=N double bond. The dihedral angles between the benzene rings are 24.4 (2) and 9.4 (2)° in the two mol-ecules. The crystal structure is stabilized by inter-molecular N-H⋯O hydrogen bonds, forming chains running along the b axis.

SUBMITTER: Lin HW

PROVIDER: S-EPMC2961851 | biostudies-literature | 2008 Jun

REPOSITORIES: biostudies-literature

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(E)-N'-(5-Bromo-2-methoxy-benzyl-idene)-4-chloro-benzohydrazide.

Lin Hong-Wei HW

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

The title Schiff base compound, C(15)H(12)BrClN(2)O(2), crystallizes with two independent mol-ecules in the asymmetric unit. The mol-ecules adopt an E configuration with respect to the C=N double bond. The dihedral angles between the benzene rings are 24.4 (2) and 9.4 (2)° in the two mol-ecules. The crystal structure is stabilized by inter-molecular N-H⋯O hydrogen bonds, forming chains running along the b axis. ...[more]

PMID: 21202907

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

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 π-π stacking inter-actions with centroid-centroid distances of 3.583 (4) Å.

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

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Project description:The title compound, C(15)H(13)ClN(2)O(2), was prepared by the reaction of 3-methoxy-benzaldehyde and 4-chloro-benzo-hydrazide in methanol. The asymmetric unit consists of two unique molecules, which are linked together in the form of a cross by N-H⋯O and N-H⋯N hydrogen bonds. The dihedral angles between the two benzene rings in the mol-ecules are 77.3 (1) and 44.1 (1)°. In the crystal structure, 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(16)H(15)BrN(2)O(3), there are two independent mol-ecules (A and B) in the asymmetric unit. The major difference between the two mol-ecules is the dihedral angle formed by the aromatic rings [72.6 (2) and 18.8 (2)° for A and B, respectively]. The benzohydrazide groups are not planar and the mol-ecules exist in trans configurations with respect to the methyl-idene units. The mol-ecular packing is stabilized by two inter-molecular N-H⋯O hydrogen bonds, forming chains parallel to the c axis. Only the A mol-ecules of the asymmetric unit are held together by π-π inter-actions [centroid-centroid distance = 3.714 (3) Å].

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(E)-N'-(5-Bromo-2-methoxy-benzyl-idene)-4-methoxy-benzohydrazide.

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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 π-π stacking inter-actions, with a centroid-centroid separation of 3.838 (3) Å and a slippage of 1.19 Å.

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(E)-N'-(2-Chloro-benzyl-idene)-2-methoxy-benzohydrazide.

Project description:The mol-ecule of the title compound, C(15)H(13)ClN(2)O(2), displays an E configuration about the C=N bond. The dihedral angle between the two benzene rings is 77.1 (2)°. In the crystal structure, mol-ecules are linked through inter-molecular N-H⋯O hydrogen bonds, forming chains running along the b axis.

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

Project description:The mol-ecule of the title compound, C(15)H(13)ClN(2)O(2), adopts an E geometry about the C=N bond. The dihedral angle between the two benzene rings is 62.7 (2)°. In the crystal structure, mol-ecules are linked through inter-molecular N-H⋯O hydrogen bonds, forming chains running along the c axis.

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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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(E)-4-Bromo-N'-(2-chloro-benzyl-idene)benzohydrazide.

Project description:In the title compound, C(14)H(10)BrClN(2)O, the dihedral angle between the two benzene rings is 11.4 (2)°. In the crystal structure, mol-ecules are connected via inter-molecular N-H⋯O hydrogen bonds into one-dimensional chains running parallel to the c axis.

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