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(E)-4-Hy-droxy-N'-(2-hy-droxy-4-meth-oxy-benzyl-idene)benzohydrazide.

ABSTRACT: In the title compound, C(15)H(14)N(2)O(4), the dihedral angle between the benzene rings is 40.59?(4)° and an intra-molecular O-H?N hydrogen bond generates an S(6) ring. In the crystal, N-H?O, O-H?O and C-H?O inter-actions link the mol-ecules into a three-dimensional network.

SUBMITTER: Rassem HH

PROVIDER: S-EPMC3394058 | biostudies-literature | 2012 Jul

REPOSITORIES: biostudies-literature

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(E)-4-Hy-droxy-N'-(2-hy-droxy-4-meth-oxy-benzyl-idene)benzohydrazide.

Rassem Hesham Hussein HH Salhin Abdussalam A Bin Salleh Baharuddin B Rosli Mohd Mustaqim MM Fun Hoong-Kun HK

Acta crystallographica. Section E, Structure reports online 20120630 Pt 7

In the title compound, C(15)H(14)N(2)O(4), the dihedral angle between the benzene rings is 40.59 (4)° and an intra-molecular O-H⋯N hydrogen bond generates an S(6) ring. In the crystal, N-H⋯O, O-H⋯O and C-H⋯O inter-actions link the mol-ecules into a three-dimensional network. ...[more]

PMID: 22798923

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

Project description:In the title compound, C(15)H(14)N(2)O(3), the dihedral angle between the two benzene rings is 47.9 (3)°. In the crystal, mol-ecules are linked through N-H⋯O, O-H⋯O and O-H⋯N hydrogen bonds, forming layers parallel to the ab plane.

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(E)-4-Hy-droxy-N'-(3-hy-droxy-4-meth-oxy-benzyl-idene)benzohydrazide.

Project description:The mol-ecule of the title benzohydrazide derivative, C(15)H(14)N(2)O(4), exists in a trans conformation with respect to the C=N double bond and is twisted, the dihedral angle between the two benzene rings being 24.17?(6)°. The meth-oxy group is almost co-planar with respect to the attached benzene ring [C(m)-O-C-C (m = meth-yl) = -1.45?(17)°]. In the crystal, the mol-ecules are linked by N-H?O and O-H?O hydrogen bonds into sheets parallel to the bc plane. These sheets are further connected into a three-dimensional network by weak C-H?O and C-H?? inter-actions.

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(E)-4-Hy-droxy-N'-(4-hy-droxy-3-meth-oxy-benzyl-idene)benzohydrazide.

Project description:In the title compound, C(15)H(14)N(2)O(4), the N=C double bond has an E configuration. The two benzene rings make a dihedral angle of 28.59?(6)°. In the crystal, mol-ecules are linked into a three-dimensional network by inter-molecular N-H?O, O-H?O and C-H?O hydrogen bonds and stabilized by weak C-H?? inter-actions.

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(E)-N'-(3-Hy-droxy-4-meth-oxy-benzyl-idene)-4-meth-oxy-benzohydrazide.

Project description:The title mol-ecule, a benzohydrazide derivative, C(16)H(16)N(2)O(4), is twisted with a dihedral angle of 69.97 (5)° between the two benzene rings. An intra-molecular O-H⋯O hydrogen bond generates an S(5) ring motif. In the crystal, mol-ecules are linked by N-H⋯O and weak C-H⋯O hydrogen bonds into a chain along the c axis. C-H⋯π inter-actions are also present.

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(E)-4-Hy-droxy-N'-(2-meth-oxy-benzyl-idene)benzohydrazide.

Project description:In the title compound, C(15)H(14)N(2)O(3), the dihedral angle between the benzene rings is 66.56?(5)°. In the crystal, N-H?O, O-H?O and C-H?O inter-actions link the mol-ecules into a three-dimensional network. A ?-? inter-action, with a centroid-centroid distance of 3.628?(6)?Å, helps to establish the packing.

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N'-(5-Chloro-2-hy-droxy-benzyl-idene)-4-meth-oxy-benzohydrazide.

Project description:The asymmetric unit of the title compound, C(15)H(13)ClN(2)O(3), contains two independent hydrazone mol-ecules. Each mol-ecule adopts an E configuration with respect to the methyl-idene unit and forms an intra-molecular O-H?N hydrogen bond. The principal difference between the two unique mol-ecules is the relative orientation of the two benzene rings, the dihedral angles between them being 4.0?(3) and 65.9?(3)°, respectively. In the crystal, mol-ecules are linked through N-H?O hydrogen bonds, forming chains running along the c axis.

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N'-(5-Chloro-2-hy-droxy-benzyl-idene)-2-meth-oxy-benzohydrazide.

Project description:The title Schiff base compound, C(15)H(13)ClN(2)O(3), was prepared by the reaction of equimolar quanti-ties of 5-chloro-2-hy-droxy-benzaldehyde with 2-meth-oxy-benzohydrazide in a methanol solution. The dihedral angle between the two benzene rings is 20.6?(3)°. An intra-molecular O-H?N hydrogen bond may influence the mol-ecular conformation. In the crystal structure, mol-ecules form chains along the b direction via inter-molecular N-H?O hydrogen bonds which are bifurcated involving an intra-molecular N-H?O hydrogen bond.

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

Project description:The asymmetric unit of the title compound, C(16)H(16)N(2)O(3), contains four independent mol-ecules with different conformations; the dihedral angles between the two benzene rings in the mol-ecules are 39.7 (3), 45.4 (3), 50.6 (3) and 51.6 (3)°. Intramolecular O-H⋯N hydrogen bonds are observed in the molecule. In the crystal, N-H⋯O hydrogen bonds link the mol-ecules into two crystallographically independent chains propagating in [010], and each chain is formed by two alternating independent mol-ecules. Weak C-H⋯O inter-actions also occur.

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

Project description:In the mol-ecule of the title compound, C(15)H(13)N(3)O(3), an intra-molecular O-H⋯N hydrogen bond influences the planarity of the conformation; the dihedral angle between the benzene rings is 11.4 (3)°. In the crystal, mol-ecules are linked by N-H⋯O hydrogen bonds into chains in [101].

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

Project description:The organic molecule of the title hydrate, C(15)H(13)BrN(2)O(4)·H(2)O, is roughly planar, with a mean deviation of 0.0939 (2) Å. The dihedral angle between the two aromatic rings is 8.2 (3)°. Intra-molecular O-H⋯N and O-H⋯O hydrogen bonds are observed. In the crystal, N-H⋯O(water) and O(water)-H⋯O hydrogen bonds lead to a three-dimensional network.

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