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4-But-oxy-N'-[1-(4-methyl-phen-yl)ethyl-idene]benzohydrazide.

ABSTRACT: The mol-ecule of the title compound, C(20)H(24)N(2)O(2), exists in a trans conformation with respect to the C=N bond. The dihedral angle between the benzene rings is 79.0 (1)°. In the crystal, N-H⋯O hydrogen bonds link the mol-ecules into chains propagating in [001]. Two weak C-H⋯O inter-actions also occur.

SUBMITTER: Dilek N

PROVIDER: S-EPMC3435798 | biostudies-literature | 2012 Sep

REPOSITORIES: biostudies-literature

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4-But-oxy-N'-[1-(4-methyl-phen-yl)ethyl-idene]benzohydrazide.

Dilek Nefise N Gunes Bilal B Gup Ramazan R

Acta crystallographica. Section E, Structure reports online 20120825 Pt 9

The mol-ecule of the title compound, C(20)H(24)N(2)O(2), exists in a trans conformation with respect to the C=N bond. The dihedral angle between the benzene rings is 79.0 (1)°. In the crystal, N-H⋯O hydrogen bonds link the mol-ecules into chains propagating in [001]. Two weak C-H⋯O inter-actions also occur. ...[more]

PMID: 22969644

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(1Z,2E)-N'-{2-Chloro-1-methyl-2-[2-(4-methyl-phen-yl)hydrazin-1-yl-idene]ethyl-idene}-4-meth-oxy-benzohydrazide.

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

Project description: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.

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2-Hydr-oxy-N'-[(1Z)-1-(2-hydr-oxy-5-methyl-phen-yl)-2-methyl-propyl-idene]benzohydrazide.

Project description:The title compound, C(18)H(20)N(2)O(3), adopts a cis conformation with respect to the C=N double bond. The crystal structure is stabilized by intra-molecular N-H⋯O and inter-molecular O-H⋯O hydrogen bonds.

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(E)-N'-[1-(4-Bromo-phen-yl)ethyl-idene]benzohydrazide.

Project description:The asymmetric unit of the title compound, C(15)H(13)BrN(2)O, contains two independent mol-ecules with different conformations; the two aromatic rings form dihedral angles of 32.4?(4) and 27.5?(4)° in the two mol-ecules. In the crystal structure, inter-molecular N-H?O hydrogen bonds link mol-ecules into chains propagating in [100].

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(E)-N'-[1-(Thio-phen-2-yl)ethyl-idene]benzohydrazide.

Project description:The title compound, C(13)H(12)N(2)OS, was obtained from the condensation reaction of 2-acetyl-thio-phene and benzohydrazide. In the mol-ecule, the formohydrazide fragment is approximately planar (r.m.s deviation = 0.0146 Å) and the mean plane is oriented at dihedral angles of 24.47 (11) and 28.86 (13)°, respectively, to the phenyl and thio-phene rings. The thio-phene and phenyl rings make a dihedral angle of 53.21 (8)°. The benzamide fragment and thio-phene ring are located on the opposite sides of the C=N bond, showing an E conformation. Classical inter-molecular N-H⋯O hydrogen bonds and weak C-H⋯O inter-actions are present in the crystal structure: three such bonds occur to the same O-atom acceptor.

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Project description:Crystals of the title compound, C(15)H(15)N(3)O, were obtained from a condensation reaction of benzohydrazide and 1-(4-amino-phen-yl)ethanone. The mol-ecule assumes an E configuration with the amino-phenyl and benzohydrazide units located on opposite sites of the C=N double bond. In the crystal structure, the benzene rings of the mol-ecule are slightly twisted with respect to the central hydrazide, the dihedral angles being 18.22 (12) and 27.62 (12)°. The crystal structure contains inter-molecular N-H⋯O and weak C-H⋯N hydrogen bonding.

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Project description:In the title compound, C(15)H(15)N(3)O, the dihedral angle between the pyridine and benzene rings is 36.3 (2)°. In the crystal, mol-ecules are linked through inter-molecular N-H⋯O hydrogen bonds, forming chains along the b axis.

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Crystal structure of N'-[bis-(ethyl-sulfan-yl)methyl-idene]-2-hy-droxy-4-meth-oxy-benzohydrazide.

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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(E)-N'-[1-(4-Bromo-phen-yl)ethyl-idene]-2-hydroxy-benzohydrazide.

Project description:In the title compound, C(15)H(13)BrN(2)O(2), the two aromatic rings form a dihedral angle of 7.9?(1)° and an intra-molecular N-H?O hydrogen bond influences the mol-ecular conformation. In the crystal, inter-molecular O-H?O hydrogen bonds link the mol-ecules into chains propagated in [001]. The crystal packing exhibits also ?-? inter-actions, which pair mol-ecules into centrosymmetric dimers with short inter-molecular distances of 3.671?(4)?Å between the centroids of aromatic rings.

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