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2-Nitro-N'-[1-(pyridin-2-yl)ethyl-idene]benzohydrazide.

ABSTRACT: In the title compound, C(14)H(12)N(4)O(3), the dihedral angle between the benzene ring and the pyridine ring is 60.9 (2)°. The major twist in the mol-ecule occurs about the (NH)-(CO)-C(ar)-C(ar) (ar = aromatic) bond, the relevant torsion angle being 63.97 (12)°. In the crystal, inversion dimers linked by pairs of N-H⋯O hydrogen bonds generate R(2) (2)(8) loops.

SUBMITTER: Li X

PROVIDER: S-EPMC3238998 | biostudies-literature |

REPOSITORIES: biostudies-literature

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N'-[1-(2-Hydroxy-phen-yl)ethyl-idene]-2-nitro-benzohydrazide methanol solvate.

Project description:In the title compound, C(15)H(13)N(3)O(4)·CH(3)OH, the dihedral angle between the two substituted benzene rings is 66.7?(2)°. An intra-molecular O-H?N hydrogen bond is observed in the Schiff base mol-ecule. In the crystal structure, the Schiff base and solvent mol-ecules are linked into chains running along the a axis by inter-molecular O-H?O and N-H?O hydrogen bonds.

| S-EPMC2968426 | biostudies-literature

N'-[(E)-1-(5-Bromo-2-hy-droxy-phen-yl)ethyl-idene]-4-nitro-benzohydrazide.

Project description:The title compound, C(15)H(12)BrN(3)O(4), displays a trans conformation with respect to the C=N double bond. The central atoms around the C=N double bond are not coplanar, in contrast to the aromatic rings, which exhibit a dihedral angle of 1.80?(4)° between their mean planes. An intra-molecular O-H?N hydrogen bond occurs. In the crystal, mol-ecules are connected via inter-molecular N-H?O hydrogen bonding into chains along the a axis.

| S-EPMC3152073 | biostudies-literature

N'-[(E)-(3-Fluoro-pyridin-2-yl)methyl-idene]benzohydrazide monohydrate.

Project description:The title compound, C(13)H(10)FN(3)O·H(2)O, exists in the E conformation with respect to the azomethane C=N double bond. The mol-ecule is close to planar with a maximum deviation of 0.286 (2) Å. The pyridine ring is essentially coplanar with the central C(= O)N(2)C unit [dihedral angle = 2.02 (3)°] and the phenyl ring exhibits a dihedral angle of 14.41 (10)° with respect to the central unit. The crystal structure features O-H⋯N, N-H⋯O and O-H⋯O hydrogen-bond inter-actions between the solvent water and the benzohydrazide mol-ecules, as well as C-H⋯O hydrogen bonds and C-F⋯π [3.0833 (18) Å] inter-actions.

| S-EPMC3435726 | biostudies-literature

(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].

| S-EPMC2980166 | biostudies-literature

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

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.

| S-EPMC2961641 | biostudies-literature

2-Methyl-N'-[1-(2-pyrid-yl)ethyl-idene]benzohydrazide.

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.

| S-EPMC3051759 | biostudies-literature

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

Project description: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.

| S-EPMC2967984 | biostudies-literature

2-Cyano-N'-[1-(pyridin-2-yl)ethyl-idene]acetohydrazide.

Project description:In the title compound, C(10)H(10)N(4)O, the dihedral angle between the pyridine ring and the -C=O(CH(2))CN group is 24.08?(12)°. In the crystal, inversion dimers linked by pairs of N-H?N hydrogen bonds generate R(2) (2)(8) loops.

| S-EPMC3515292 | biostudies-literature

N'-[(2-Hydr-oxy-1-naphth-yl)methyl-idene]-2-nitro-benzohydrazide.

Project description:In the title Schiff base compound, C(18)H(13)N(3)O(4), prepared by the reaction of 2-hydr-oxy-1-naphthaldehyde with 2-nitro-benzohydrazide, the dihedral angle between the benzene ring and naphthyl ring system is 23.0?(2)°. There is an intra-molecular O-H?N hydrogen bond involving the naphthalene hydr-oxy substituent and a hydrazide N atom. In the crystal structure, symmetry-related mol-ecules are linked through inter-molecular N-H?O hydrogen bonds, forming chains propagating in [101].

| S-EPMC2979126 | biostudies-literature

N'-[(2-Hy-droxy-naphthalen-1-yl)methyl-idene]-4-nitro-benzohydrazide.

Project description:In the title mol-ecule, C(18)H(13)N(3)O(4), the hy-droxy group is involved in the formation of an intra-molecular O-H⋯N hydrogen bond. The dihedral angle between the planes of the benzene ring and the naphthyl ring system is 9.0 (2)°. In the crystal, mol-ecules are linked through N-H⋯O hydrogen bonds into chains along the c axis.

| S-EPMC3238935 | biostudies-literature

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