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

ABSTRACT: The title compound, C(14)H(13)N(3)O(3)·H(2)O, was prepared by the reaction of 4-methoxy-salicylaldehyde and isonicotinohydrazide in ethanol. The Schiff base mol-ecule is not planar and has an E configuration with respect to the methyl-idene unit. The dihedral angle between the benzene and pyridine rings is 36.8?(2)°. In the mol-ecule there is an intra-molecular O-H?N hydrogen bond involving the hydroxyl substituent and the N atom of the 2-hydr-oxy-4-methoxy-benzyl-idene unit. In the crystal, the mol-ecules are linked through inter-molecular O-H?O, O-H?N and N-H?O hydrogen bonds, forming layers parallel to the bc plane.

SUBMITTER: Peng SJ

PROVIDER: S-EPMC2959424 | biostudies-other | 2008 Sep

REPOSITORIES: biostudies-other

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

Peng San-Jun SJ Hou Hai-Yun HY

Acta crystallographica. Section E, Structure reports online 20080924 Pt 10

The title compound, C(14)H(13)N(3)O(3)·H(2)O, was prepared by the reaction of 4-methoxy-salicylaldehyde and isonicotinohydrazide in ethanol. The Schiff base mol-ecule is not planar and has an E configuration with respect to the methyl-idene unit. The dihedral angle between the benzene and pyridine rings is 36.8 (2)°. In the mol-ecule there is an intra-molecular O-H⋯N hydrogen bond involving the hydroxyl substituent and the N atom of the 2-hydr-oxy-4-methoxy-benzyl-idene unit. In the crystal, the ...[more]

PMID: 21201195

Similar Datasets

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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N'-(5-Bromo-2-hydr-oxy-3-methoxy-benzyl-idene)isonicotinohydrazide.

Project description:The title compound, C(14)H(12)BrN(3)O(3), was prepared by reaction of 5-bromo-3-methoxy-salicylaldehyde and isonicotinohydrazide in methanol. The mol-ecule is not planar and adopts a trans configuration with respect to the C=N bond. There is an intra-molecular O-H?N hydrogen bond in the mol-ecule. The dihedral angle between the benzene and pyridine rings is 12.2?(2)°. In the crystal structure, mol-ecules are linked through inter-molecular N-H?N hydrogen bonds, forming chains running along the c-axis direction.

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N'-(4-Hydr-oxy-3-methoxy-benzyl-idene)acetohydrazide monohydrate.

Project description:In the title compound, C(10)H(12)N(2)O(3)·H(2)O, the Schiff base mol-ecule is approximately planar [within 0.189?(1)?Å]. The inter-planar angle between the benzene and acetohydrazide planes is 8.50?(10)°. In the crystal, mol-ecules are linked into a three-dimensional network by strong and weak O-H?O and strong N-H?O hydrogen bonds. The hydr-oxy H atom deviates from the 4-hydr-oxy-3-methoxy-phenyl mean plane by 0.319?(2)?Å, probably due to the involvement of this H atom in the O-H?O hydrogen bond. The weak O-H?O hydrogen bond is involved in a bifurcated hydrogen bond with R(1) (2)(4) motif. A weak C-H?? inter-action is also present.

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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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N'-(4-Hydr-oxy-3-methoxy-benzyl-idene)-4-methoxy-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 aromatic rings is 19.6 (2)°. In the crystal structure, mol-ecules are linked into a three-dimensional network by inter-molecular N-H⋯O, O-H⋯N and O-H⋯O hydrogen bonds.

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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-3-methoxy-benzyl-idene)-1,3-benzodioxole-5-carbohydrazide monohydrate.

Project description:Single crystals of the title compound, C(16)H(14)N(2)O(5)·H(2)O, were obtained from a condensation reaction of 1,3-benzodioxole-5-carbohydrazide and 3-methoxy-salicylaldehyde in a 95% ethanol solution. The asymmetric unit consists of a Schiff base mol-ecule, which assumes an E configuration with respect to the C=N bond, and a water mol-ecule of crystallization. The dihedral angle between the two substituted benzene rings is 12.7 (2)°. In the crystal structure, mol-ecules are linked through inter-molecular N-H⋯O and O-H⋯O hydrogen bonds, forming layers parallel to the bc plane.

| S-EPMC2967948 | biostudies-literature

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.

| S-EPMC2970457 | biostudies-literature

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

Project description:In the title compound, C(16)H(16)N(2)O(4), the dihedral angle between the two benzene rings is 8.7?(2)°. The mol-ecule adopts an E configuration about the C=N bond, with an intra-molecular O-H?N hydrogen bond involving the hydr-oxy substituent and the hydrazide N atom. In the crystal structure, adjacent mol-ecules are linked through inter-molecular N-H?O hydrogen bonds, forming chains propagating in the b-axis direction.

| S-EPMC2970121 | biostudies-literature

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

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