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(E)-3-(2-Hydr-oxy-4-methoxy-benzyl-idene-amino)benzonitrile.

ABSTRACT: In the mol-ecule of the title compound, C(15)H(12)N(2)O(2), the aromatic rings are oriented at a dihedral angle of 28.11?(3)°. Intra-molecular O-H?N hydrogen bonding results in the formation of a planar six-membered ring, which is nearly coplanar with the adjacent ring at a dihedral angle of 1.53?(3)°. In the crystal structure, ?-? contacts between the benzene rings [centroid-centroid distance = 3.841?(1)?Å] may stabilize the structure.

SUBMITTER: Zhou JC

PROVIDER: S-EPMC2969199 | biostudies-literature | 2009 Jun

REPOSITORIES: biostudies-literature

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(E)-3-(2-Hydr-oxy-4-methoxy-benzyl-idene-amino)benzonitrile.

Zhou Jian-Cheng JC Zhang Zheng-Yun ZY Zhang Chuan-Ming CM Li Nai-Xu NX

Acta crystallographica. Section E, Structure reports online 20090620 Pt 7

In the mol-ecule of the title compound, C(15)H(12)N(2)O(2), the aromatic rings are oriented at a dihedral angle of 28.11 (3)°. Intra-molecular O-H⋯N hydrogen bonding results in the formation of a planar six-membered ring, which is nearly coplanar with the adjacent ring at a dihedral angle of 1.53 (3)°. In the crystal structure, π-π contacts between the benzene rings [centroid-centroid distance = 3.841 (1) Å] may stabilize the structure. ...[more]

PMID: 21582908

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(E)-3-(2-Hydr-oxy-3-methoxy-benzyl-idene-amino)benzonitrile.

Project description:The mol-ecule of the title compound, C(15)H(12)N(2)O(2), displays a trans configuration with respect to the C=N double bond. The dihedral angle between the two benzene rings is 30.46?(14)°. A strong intra-molecular O-H?O hydrogen bond stabilizes the mol-ecular structure.

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2-Amino-N-(2-hydr-oxy-3-methoxy-benzyl-idene)aniline.

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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.

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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.

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Project description:In the title compound, C(16)H(15)BrN(2)O(5)·2H(2)O, the dihedral angle between the two aromatic rings is 2.9 (2)° and an intra-molecular O-H⋯N hydrogen bond is observed. One of the water mol-ecule is disordered over two positions, with occupancies of 0.83 (3) and 0.17 (3). In the crystal structure, mol-ecules are linked into a three-dimensional network by inter-molecular O-H⋯O, O-H⋯(O,O), O-H⋯N and N-H⋯O hydrogen bonds. π-π inter-actions involving Br-substituted benzene rings, with a centroid-centroid distance of 3.552 (3) Å are also observed.

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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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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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N'-[(E)-4-Hydr-oxy-3-methoxy-benzyl-idene]benzohydrazide.

Project description:In the title compound, C(15)H(14)N(2)O(3), the phenyl ring is disordered over two set of sites with an occupancy ratio of 0.810 (3):0.190 (3); the dihedral angle between the two components is 72.3 (4)°. The benzene and phenyl rings are oriented at dihedral angles of 69.18 (8) and 26.0 (5)° (major and minor orientations, respectively), and an intra-molecular O-H⋯O hydrogen bond occurs. In the crystal, mol-ecules are linked by N-H⋯O, O-H⋯O and C-H⋯O inter-actions, generating a three-dimensional network.

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