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(E)-3-Hydr-oxy-N'-(2-hydroxy-benzyl-idene)-2-naphthohydrazide.

ABSTRACT: The title compound, C(18)H(14)N(2)O(3), is an aroylhydrazone with an approximately planar structure [dihedral angle of 15.27 (13)° between the benzene ring and the naphthyl ring system], stabilized by intra-molecular N-H⋯O and O-H⋯N hydrogen bonds. Inter-molecular O-H⋯O hydrogen bonds with the keto group as acceptor lead to strands along [100]. In terms of graph-set analysis, the descriptor on the unitary level is C(1) (1)(6)S(6)S(6).

SUBMITTER: Monfared HH

PROVIDER: S-EPMC2980095 | biostudies-literature |

REPOSITORIES: biostudies-literature

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

Project description:The title compound, C(14)H(12)N(2)O(3), was synthesized by the condensation of salicylaldehyde with 3-hydroxy-benzo-hydrazide. The dihedral angle between the two benzene rings is 12.4?(2)°. The 2-hydr-oxy group forms an intra-molecular O-H?N hydrogen bond with the imide N atom. Mol-ecules are linked through inter-molecular O-H?O and N-H?O hydrogen bonds into a two-dimensional polymeric structure parallel to the ab plane.

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4-Hydr-oxy-N'-(3,5-dichloro-2-hydroxy-benzyl-idene)benzohydrazide.

Project description:In the title compound, C(14)H(10)Cl(2)N(2)O(3), the dihedral angle between the two benzene rings is 5.1?(2)°. The mol-ecule adopts an E configuration with respect to the C=N bond and an intra-molecular O-H?N inter-action is present. In the crystal structure, mol-ecules are linked through inter-molecular N-H?O and O-H?O hydrogen bonds.

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N'-(3-Eth-oxy-2-hydroxy-benzyl-idene)-4-hydr-oxy-3-methoxy-benzohydrazide monohydrate.

Project description:In the title compound, C(17)H(18)N(2)O(5)·H(2)O, the dihedral angle between the two aromatic rings is 7.86?(7)° and an intra-molecular O-H?N hydrogen bond is observed. In the crystal structure, mol-ecules are linked into a three-dimensional network by inter-molecular O-H?O and N-H?O hydrogen bonds.

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3-Hydr-oxy-N'-(5-hydr-oxy-2-nitro-benzyl-idene)-2-naphthohydrazide.

Project description:The mol-ecule of the title compound, C(18)H(13)N(3)O(5), displays an E configuration with respect to the C=N double bond. The dihedral angle between the benzene ring and the naphthyl system is 1.1?(2)°. In the crystal structure, mol-ecules are linked through inter-molecular N-H?O and O-H?O hydrogen bonds, forming a three-dimensional network.

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(E)-4-Hydr-oxy-N'-(2-hydr-oxy-4-methoxy-benzyl-idene)benzohydrazide monohydrate.

Project description:The Schiff base mol-ecule of the title compound, C(15)H(14)N(2)O(4)·H(2)O, adopts a trans configuration with respect to the C=N double bond; the Schiff base itself is almost planar (r.m.s. deviation for all non-H atoms = 0.040 Å). The amido N atom is the hydrogen-bond donor to the water mol-ecule, which is the hydrogen-bond donor to the hydr-oxy groups of two neighboring mol-ecules. One of the hydroxyl groups acts as an intra-molecular and the other as an inter-molecular hydrogen-bond donor.

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2-Hydr-oxy-N'-(2-hydr-oxy-4-methoxy-benzyl-idene)-3-methyl-benzohydrazide monohydrate.

Project description:In the title compound, C(16)H(16)N(2)O(4)·H(2)O, the dihedral angle between the two benzene rings is 12.4?(2)° and the mol-ecule adopts an E configuration with respect to the C=N bond. There are intra-molecular O-H?N and O-H?O hydrogen bonds in the hydrazone mol-ecule, which both generate S(6) rings. In the crystal structure, mol-ecules are linked by N-H?O and O-H?O hydrogen bonds, forming layers parallel to the ab plane. The crystal studied was a non-merohedral twin with a domain ratio of 0.887?(3):0.113?(3).

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N'-(2-Hydr-oxy-4-methoxy-benzyl-idene)isonicotinohydrazide.

Project description:The title compound, C(14)H(13)N(3)O(3), was synthesized by the condensation reaction of 2-hydr-oxy-4-methoxy-benzaldehyde with isonicotinohydrazide in a methanol solution. The mol-ecule of the compound displays a trans configuration with respect to the C=N and C-N bonds. The dihedral angle between the benzene and the pyridine rings is 27.3?(2)°. In the crystal, mol-ecules are linked by N-H?N inter-actions into zigzag chains with graph-set notation C(7) along [010]. An intra-molecular O-H?N hydrogen bond is observed.

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4-Hydr-oxy-N'-(4-methoxy-benzyl-idene)benzohydrazide.

Project description:The title compound, C(15)H(14)N(2)O(3), was synthesized by the reaction of 4-methoxy-benzaldehyde with 4-hydroxy-benzohydrazide in methanol. The mol-ecule adopts an E configuration about the C=N bond. The two benzene rings make a dihedral angle of 46.6?(2)°. In the crystal structure, mol-ecules are linked into a two-dimensional network parallel to (001) through O-H?O and N-H?O hydrogen bonds.

| S-EPMC2970054 | biostudies-literature

2,4-Dihydr-oxy-N'-(2-hydr-oxy-4-methoxy-benzyl-idene)benzohydrazide.

Project description:In the title compound, C(15)H(14)N(2)O(5), the dihedral angle between the two benzene rings is 4.3?(3)° and the mol-ecule adopts an E configuration with respect to the C=N bond. Intra-molecular O-H?N and N-H?O hydrogen bonds are observed. In the crystal structure, the mol-ecules are linked through inter-molecular N-H?O and O-H?O hydrogen bonds to form layers parallel to the ac plane.

| S-EPMC2979259 | biostudies-literature

2-Hydr-oxy-N'-(2-hydr-oxy-3-meth-oxy-5-nitro-benzyl-idene)-3-methyl-benzo-hydrazide.

Project description:In the title compound, C(16)H(15)N(3)O(6), the dihedral angle between the two benzene rings is 0.9?(2)°. The mol-ecule adopts an E configuration with respect to the C=N bond. There are intra-molecular O-H?N and O-H?O hydrogen bonds in the mol-ecule. In the crystal structure, mol-ecules are linked through inter-molecular N-H?O hydrogen bonds to form chains running along the c axis.

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