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N'-[1-(4-Nitro-phen-yl)ethyl-idene]acetohydrazide.

ABSTRACT: The title compound, C(10)H(11)N(3)O(3), was prepared by the reaction of acetohydrazide and 1-(4-nitro-phen-yl)ethanone. The asymmetric unit contains two crystallographically independent mol-ecules. Inversion-related mol-ecules form dimers, in which two N-H⋯O hydrogen bonds generate an inter-molecular R(2) (2)(8) ring.

SUBMITTER: Li YF

PROVIDER: S-EPMC2967984 | biostudies-literature |

REPOSITORIES: biostudies-literature

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N'-[1-(4-Chloro-phen-yl)ethyl-idene]acetohydrazide.

Project description:In the title compound, C(10)H(11)ClN(2)O, the dihedral angle between the acetohydrazide group and the aromatic ring is 33.76?(9)°. In the crystal, inversion dimers linked by pairs of N-H?O hydrogen bonds generate R(2) (2)(8) loops.

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N'-[(E)-1-(4-Bromo-phen-yl)ethyl-idene]-2-(2-methyl-4-nitro-1H-imidazol-1-yl)acetohydrazide.

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2-(2-Nitro-phen-yl)acetohydrazide.

Project description:In the title compound, C8H9N3O3, the dihedral angle between the benzene ring and the acetohydrazide C-C(=O)-N-N plane [maximum deviation = 0.0471?(13)?Å] is 87.62?(8)°. The nitro group is twisted by 19.3?(2)° with respect to the benzene ring. In the crystal, N-H?O hydrogen bonds link the mol-ecules into a double-column structure along the b axis.

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2-(4-Isobutyl-phen-yl)-N'-[1-(4-nitro-phen-yl)ethyl-idene]propanohydrazide.

Project description:The mol-ecule of the title compound, C(21)H(25)N(3)O(3), exists in a trans configuration with respect to the ethyl-idene unit. The dihedral angle between the two substituted benzene rings is 86.99?(7)°. The nitro group is twisted from the attached benzene ring at an angle of 17.02?(7)°. In the crystal structure, mol-ecules are linked by pairs of N-H?O hydrogen bonds in a face-to-face manner into centrosymmetric dimers. These dimer units are further linked into chains along the c axis by weak C-H?O inter-actions. These chains are stacked along the b axis. The crystal is further stabilized by weak C-H?? inter-actions.

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2-Cyano-N'-[1-(2-hy-droxy-phen-yl)ethyl-idene]acetohydrazide monohydrate.

Project description:The title compound, C(11)H(11)N(3)O(2)·H(2)O, was obtained by the reaction of 2-acetyl-phenol with cyano-acetohydrazide in methanol. The asymmetric unit contains two hydrazone mol-ecules and two water mol-ecules of crystallization. There is an intra-molecular O-H?N hydrogen bond in each hydrazone mol-ecule. The crystal structure is stabilized by inter-molecular N-H?O, O-H?O and O-H?N hydrogen bonds.

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1-[1-(4-Nitro-phen-yl)ethyl-idene]thio-semicarbazide.

Project description:The title compound, C(9)H(10)N(4)O(2)S, was prepared by the reaction of 1-(4-nitro-phen-yl)ethanone and thio-semicarbazide in ethanol at 367?K. There are weak inter-molecular N-H?S and N-H?O hydrogen-bonding inter-actions in the crystal structure involving the amine and nitrile groups, respectively, as donors.

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(E)-1-(2,4-Dinitro-phen-yl)-2-[1-(2-nitro-phen-yl)ethyl-idene]hydrazine.

Project description:The title compound, C(14)H(11)N(5)O(6), was obtained from the condensation reaction of 2,4-dinitro-phenyl-hydrazine and 2-nitro-acetophenone. The mol-ecule displays an E conformation about the C=N double bond and an intra-molecular N-H?O hydrogen bond generates an S(6) ring motif. The dihedral angle between the benzene rings is 7.84?(6)°. In the crystal, mol-ecules are linked by C-H?O hydrogen bonds and ?-? stacking inter-actions [centroid-centroid distance = 3.6447?(8)?Å] into a three-dimensional network.

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(E)-1-(2,4-Dinitro-phen-yl)-2-[1-(3-nitro-phen-yl)ethyl-idene]hydrazine.

Project description:In the asymmetric unit of the title compound, C(14)H(11)N(5)O(6), there are three crystallographically independent mol-ecules with similar conformations but some differences in bond angles. The mol-ecules are slightly twisted with the dihedral angles between the benzene rings being 10.02 (14), 8.41 (15) and 1.40 (14)°. In each mol-ecule, an intra-molecular N-H⋯O hydrogen bond generates an S(6) ring motif. In the crystal, mol-ecules are linked by weak C-H⋯O inter-actions into a three-dimensional network. π-π inter-actions with centroid-centroid distances of 3.5635 (17)-3.8273 (18) Å are observed.

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(E)-N'-[1-(4-Hydroxy-phen-yl)ethyl-idene]-2-(quinolin-8-yl-oxy)acetohydrazide methanol solvate.

Project description:In the title compound, C(19)H(17)N(3)O(3)·CH(4)O, the mean planes of the benzene ring and the quinoline rings make a dihedral angle of 75.5?(2)°. The acetohydrazide mol-ecules are connected via pairs of inter-molecular O-H?O hydrogen bonds into inversion dimers, and the methanol solvent mol-ecule is linked to the acetohydrazide mol-ecule via inter-molecular N-H?O and bifurcated O-H?(N,O) hydrogen bonds.

| S-EPMC2968527 | biostudies-literature

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