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N'-[1-(2-Hy-droxy-phen-yl)ethyl-idene]-2-meth-oxy-benzohydrazide.

ABSTRACT: There are two independent mol-ecules in the asymmetric unit of the title compound, C(16)H(16)N(2)O(3), in which the dihedral angles between the two aromatic rings are 13.0 (3) and 6.4 (3)°. Intra-molecular O-H⋯N and N-H⋯O hydrogen bonds are observed in both mol-ecules, forming S(6) rings in all cases.

SUBMITTER: Yue SY

PROVIDER: S-EPMC3006911 | biostudies-literature |

REPOSITORIES: biostudies-literature

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4-Hy-droxy-N'-[1-(2-hy-droxy-phen-yl)ethyl-idene]benzohydrazide.

Project description:In the title compound, C(15)H(14)N(2)O(3), there is an intra-molecular O-H?N hydrogen bond and the dihedral angle between the two aromatic rings is 13.9?(3)°. In the crystal structure, mol-ecules are stabilized by inter-molecular O-H?O and N-H?O hydrogen bonds.

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Project description:In the title compound, C13H18N2O3S2, the amide group is in the plane of the -benzoyl ring with a C-N-N-C torsion angle of 177.63?(12)°. The two di-thio-ate groups are in an anti conformation [torsion angles = 173.68?(8) and -9.98?(10)°]. An intra-molecular N-H?O hydrogen bond is observed. In the crystal, an O-H?O hydrogen bond and a weak C-H?O contact involving the same acceptor atom generate an S(6) ring motif and give rise to chains along [010].

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Project description:In the title compound, C11H15N3O2S, the dihedral angle between the mean planes of the benzene ring and hydrazinecarbo-thio-amide group is 9.2 (1)°. An intra-molecular O-H⋯N hydrogen bond is observed, serving to maintain an approximately planar conformation for the molecule. In the crystal, inversion dimers linked by C-H⋯O inter-actions occur. Further C-H⋯O contacts link dimers into (010) chains.

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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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N'-[(1E)-(2-Hy-droxy-naphthalen-1-yl)methyl-idene]-2-meth-oxy-benzohydrazide.

Project description:There are three independent mol-ecules in the asymmetric unit of the title compound, C(19)H(16)N(2)O(3), in which the dihedral angles between the naphthalene ring system and the benzene ring are 7.52?(16), 18.15?(18), and 13.9?(2)°. All the mol-ecules exist in the trans configuration with respect to the methyl-idene units. In each mol-ecule there is one O-H?N and one N-H?O intra-molecular hydrogen bond. In the crystal, two of the mol-ecules are linked via a bifurcated N-H?(O,O) hydrogen bond. All three mol-ecules are further linked via C-H?O inter-actions.

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

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

Project description: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.

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

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