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N'-(2,6-Dichloro-benzyl-idene)-2-hy-droxy-benzohydrazide.

ABSTRACT: In the title compound, C(14)H(10)Cl(2)N(2)O(2), the dihedral angle between the two aromatic rings is 17.39?(4)°. An intra-molecular O-H?O hydrogen bond forms a six-membered R(6)(1) (1 )ring motif. In the crystal structure, inter-molecular N-H?O and O-H?O hydrogen-bonding inter-actions occur.

SUBMITTER: Baig Y

PROVIDER: S-EPMC2983241 | biostudies-literature | 2010 Sep

REPOSITORIES: biostudies-literature

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N'-(2,6-Dichloro-benzyl-idene)-2-hy-droxy-benzohydrazide.

Baig Yawar Y Siddiqui Hamid Latif HL Siddiqui Waseeq Ahmad WA Mustafa Ghulam G Krautscheid Harald H

Acta crystallographica. Section E, Structure reports online 20100925 Pt 10

In the title compound, C(14)H(10)Cl(2)N(2)O(2), the dihedral angle between the two aromatic rings is 17.39 (4)°. An intra-molecular O-H⋯O hydrogen bond forms a six-membered R(6)(1) (1 )ring motif. In the crystal structure, inter-molecular N-H⋯O and O-H⋯O hydrogen-bonding inter-actions occur. ...[more]

PMID: 21587580

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N'-(2,4-Dichloro-benzyl-idene)-4-hy-droxy-benzohydrazide.

Project description:The title hydrazone compound, C(14)H(10)Cl(2)N(2)O(2), was synthesized by the reaction of 2,4-dichloro-benzaldehyde and 4-hy-droxy-benzohydrazide. The mol-ecule adopts an E geometry with respect to the azomethine group and the dihedral angle between the aromatic rings is 7.0?(2)°. In the crystal, mol-ecules are linked through inter-molecular N-H?Cl and O-H?O hydrogen bonds, forming a three-dimensional network.

| S-EPMC3011548 | biostudies-literature

5-[(E)-(2,6-Dichloro-benzyl-idene)amino]-2-hy-droxy-benzoic acid.

Project description:There are two geometrically different mol-ecules in the asymmetric unit of the title compound, C(14)H(9)Cl(2)NO(3). The 5-amino-2-hy-droxy-benzoic acid units [r.m.s. deviations of 0.0323 and 0.0414?Å] and 2,6-dichloro-benzaldehyde groups [r.m.s. deviations of 0.0285 and 0.0226?Å] are roughly planar and oriented at dihedral angles of 11.69?(13) and 83.12?(6)° in the two mol-ecules. An intra-molecular O-H?O hydrogen bond completes an S(6) ring motif in each mol-ecule. The two mol-ecules form dimers with each other through inter-molecular O-H?N and C-H?O hydrogen bonds, completing an R(2) (2)(8) ring motif. The dimers are inter-linked via inter-molecular O-H?N and C-H?O hydrogen bonds, forming polymeric sheets.

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(E)-N'-(3,5-Dichloro-2-hy-droxy-benzyl-idene)-2-meth-oxy-benzohydrazide.

Project description:In the title compound, C(15)H(12)Cl(2)N(2)O(3), the dihedral angle between the two substituted aromatic rings is 5.4 (4)°. Intra-molecular O-H⋯N and N-H⋯O hydrogen bonds affect the planarity of the molcular conformation, with a mean deviation from the plane defined by the non-H atoms of 0.062 (2) Å. The mol-ecule exists in a trans configuration with respect to the methyl-idene unit. In the crystal, mol-ecules are linked by N-H⋯O inter-actions.

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N'-(3,5-Dichloro-2-hy-droxy-benzyl-idene)-4-nitro-benzohydrazide methanol solvate.

Project description:In the title compound, C(14)H(9)Cl(2)N(3)O(4)·CH(4)O, the dihedral angle between the two benzene rings in the hydrazone mol-ecule is 6.3 (3)°. An intra-molecular N-H⋯O hydrogen bond stabilizes the mol-ecular conformation. In the crystal, centrosymmetrically related mol-ecules are linked through inter-molecular O-H⋯O and N-H⋯O hydrogen bonds.

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N'-(3,5-Dichloro-2-hy-droxy-benzyl-idene)-4-(dimethyl-amino)-benzohydrazide methanol monosolvate.

Project description:The title compound, C(16)H(15)Cl(2)N(3)O(2)·CH(3)OH, a Schiff base molecule, is prepared by the reaction of 3,5-dichloro-salicyl-aldehyde with 4-dimethyl-amino-benzohydrazide in methanol. The Schiff base mol-ecule is approximately planar, with a mean deviation from the least-squares plane defined by the non-H atoms of 0.0452?(3)?Å, and with a dihedral angle between the benzene rings of 4.2?(3)°. This planarity is assisted by the formation of an intra-molecular O-H?N hydrogen bond. In the crystal, adjacent Schiff base mol-ecules are linked by two methanol mol-ecules through N-H?O and O-H?O hydrogen bonds, forming dimers.

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Project description:The title compound, C(15)H(14)N(2)O(3), was prepared by condensing 4-hy-droxy-benzaldehyde and 2-hy-droxy-3-methyl-benzo-hydra-zide in methanol. The two benzene rings make a dihedral angle of 19.03 (11)°. An intra-molecular O-H⋯O hydrogen bond is observed. The crystal structure is stabilized by inter-molecular O-H⋯O and N-H⋯O hydrogen bonds and C-H⋯O inter-actions, which lead to the formation of a three-dimensional network.

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2-Hy-droxy-N'-(4-hy-droxy-3-nitro-benzyl-idene)benzohydrazide.

Project description:The title compound, C(14)H(11)N(3)O(5), crystallized with two independent mol-ecules per asymmetric unit. Each mol-ecule assumes an E configuration with respect to the methyl-idene unit. Intra-molecular O-H⋯O and N-H⋯O hydrogen bonds are present in each mol-ecule and they are linked by an O-H⋯O hydrogen bond. The dihedral angles between the mean planes of the two benzene rings are 4.45 (16) and 1.7 (2)° in the two mol-ecules. The crystal structure is stabilized by inter-molecular O-H⋯O and N-H⋯O hydrogen bonds.

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

Project description:The mol-ecule of the title compound, C(14)H(11)N(3)O(5), assumes an E configuration with respect to the methyl-idene unit. An intra-molecular O-H⋯O hydrogen bond is present in the mol-ecule. The dihedral angle between the mean planes of the two benzene rings is 5.46 (15)°. The crystal structure is stabilized by inter-molecular O-H⋯O, O-H⋯N, and N-H⋯O hydrogen bonds.

| S-EPMC3051539 | biostudies-literature

N'-(4-Hy-droxy-benzyl-idene)-2-methyl-benzohydrazide.

Project description:The title hydrazone compound, C(15)H(14)N(2)O(2), was prepared by the condensation of 4-hy-droxy-benzaldehyde with 2-methyl-benzohydrazide in methanol. The dihedral angle between the two benzene rings is 42.3?(2)°. In the crystal structure, mol-ecules are linked by inter-molecular O-H?O, O-H?N and N-H?O hydrogen bonds, forming a three-dimensional framework.

| S-EPMC2983165 | biostudies-literature

N'-(3-Hy-droxy-benzyl-idene)-4-nitro-benzohydrazide.

Project description:The title mol-ecule, C(14)H(11)N(3)O(4), is approximately planar, with an inter-planar angle between the two benzene rings of 5.8?(2)°. In the crystal, four mol-ecules are linked by an R(4) (4)(12) motif with pairs of strong O-H?O and N-H?O hydrogen bonds. The motif is situated about the crystallographic centres of symmetry and it is composed of two pairs of parallel mol-ecules. This quadruplet of mol-ecules is further extended by symmetry-equivalent hydrogen bonds to form layers parallel to the (10) plane. In addition to the hydrogen bonds, there is also a weak ?-? inter-action between the benzene rings.

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