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1-[4-(2-Fur-yl)but-3-en-2-yl-idene]-2-(2-nitro-phen-yl)hydrazine.

ABSTRACT: In the title Schiff base compound, C(14)H(13)N(3)O(3), the furan and benzene rings are oriented at a dihedral angle of 10.24 (13)°. Intra-molecular N-H⋯O hydrogen bonding is observed between the imino and nitro groups.

SUBMITTER: Yin ZG

PROVIDER: S-EPMC2969960 | biostudies-literature |

REPOSITORIES: biostudies-literature

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1-(Butan-2-yl-idene)-2-(2-nitro-phen-yl)hydrazine.

Project description:Crystals of the title compound, C(10)H(13)N(3)O(2), were obtained from a condensation reaction of butan-2-one and 1-(2-nitro-phen-yl)hydrazine. The mol-ecule exhibits a nearly coplanar structure, except for the methyl and methyl-ene H atoms, the largest deviations from the mean plane defined by all non-H atoms, except for the nitro group, being 0.120 (2) Å for one of the nitro O atoms. Intra-molecular N-H⋯O hydrogen bonding helps to establish the mol-ecular configuration.

| S-EPMC2969877 | biostudies-literature

(E)-1-(4-Nitro-phen-yl)-2-(4-{[(E)-2-(4-nitro-phen-yl)hydrazinyl-idene]meth-yl}benzyl-idene)hydrazine dihydrate.

Project description:The 30 non-H atoms in title dihydrazine compound, C(20)H(16)N(6)O(4)·2H(2)O, are close to coplanar, the r.m.s. deviation for these atoms being 0.096?Å. The conformation about each of the C=N bonds is E, and the mol-ecule has non-crystallographic 2/m symmetry. The presence of O-H?O and N-H?O hydrogen bonding leads to a three-dimensional network in the crystal structure. A highly disordered solvent mol-ecule is present within a mol-ecular cavity defined by the organic and water mol-ecules. Its contribution to the electron density was removed from the observed data in the final cycles of refinement and the formula, molecular weight and density are given without taking into account the contribution of the solvent molecule.

| S-EPMC2980149 | biostudies-literature

(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.

| S-EPMC3435706 | biostudies-literature

(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 π-π stacking inter-actions [centroid-centroid distance = 3.6447 (8) Å] into a three-dimensional network.

| S-EPMC3247472 | biostudies-literature

1-(But-2-enyl-idene)-2-(2-nitro-phen-yl)hydrazine.

Project description:The mol-ecule of the title Schiff base compound, C(10)H(11)N(3)O(2), adopts an E geometry with respect to the C=N double bond. The mol-ecule is roughly planar, with the largest deviation from the mean plane being 0.111?(2)?Å, The enyl-idene-hydrazine group is, however, slightly twisted with respect to the phenyl ring, making a dihedral angle of 6.5?(3)°. An intra-molecular N-H?O hydrogen bond may be responsible for the planar conformation. An inter-molecular N-H?O hydrogen bond links two mol-ecules around an inversion center, building a pseudo dimer.

| S-EPMC2970396 | biostudies-literature

1-(4-Nitro-phen-yl)-2-(3-phenyl-allyl-idene)hydrazine.

Project description:In the title compound, C(15)H(13)N(3)O(2), the nitro-benzene and benzene rings make a dihedral angle of 9.1 (2)°. The crystal structure is consolidated by inter-molecular N-H⋯O hydrogen bonds.

| S-EPMC2962156 | biostudies-literature

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

Project description:The asymmetric unit of the title compound, C(16)H(14)N(4)O(4), contains one half-mol-ecule of (nitro-phen-yl)ethanimine and the complete mol-ecule is generated by a crystallographic inversion centre. The mol-ecule has an E conformation with respect to each C=N double bond. The central C=N-N=C plane is twisted from the benzene rings with a dihedral angle of 24.76?(11)°. In the crystal, C-H?O inter-actions link the molecules to form sheets that lie parallel to (10-4).

| S-EPMC3295435 | biostudies-literature

1-[(E)-Anthracen-9-yl-methyl-idene]-2-(2,4-di-nitro-phen-yl)hydrazine.

Project description:In the title Schiff base, C21H14N4O4, the dihedral angle between the two nitro groups and the central benzene ring are 83.6?(5) and 2.6?(6)°. The anthracene ring system and the benzene ring make a dihedral angle of 0.7?(2)°. Intra-molecular N-H?O and C-H?N hydrogen bonds occur. In the crystal, C-H?O hydrogen bonds link the mol-ecules, forming chains along the b-axis direction.

| S-EPMC3648239 | biostudies-literature

(E)-1-(3-Nitro-phen-yl)-2-({5-[(1E)-2-(3-nitro-phen-yl)hydrazin-1-ylidenemeth-yl]-2-thien-yl}methyl-idene)hydrazine.

Project description:The title mol-ecule, C(18)H(14)N(6)O(4)S, adopts a U-shape with the aromatic groups lying syn and oriented in the same direction as the thio-phene S atom. Twists away from planarity are evident with the maximum deviation being found for a terminal nitro group: C/C/N/O = 19.0?(3)°. The conformation about each of the C=N bonds is E. In the crystal, centrosymmetrically related mol-ecules are connected via N-H?O(nitro) hydrogen bonds, forming 14-membered {?HNC(3)NO}(2) synthons. These are linked into layers via C-H?O(nitro) inter-actions with the primary inter-actions between layers being of the type C-H??, where the ?-system is the thio-phene ring.

| S-EPMC2979791 | biostudies-literature

1-{(E)-[5-(2-Nitro-phen-yl)furan-2-yl]methyl-idene}-2,2-diphenyl-hydrazine.

Project description:In the title compound, C23H17N3O3, the terminal benzene rings are oriented at dihedral angles of 3.67?(7), 76.02?(7) and 16.37?(7)° with respect to the central furan ring. In the crystal, mol-ecules are connected via weak C-H?O hydrogen bonds, resulting in a three-dimensional supra-molecular array.

| S-EPMC3588390 | biostudies-literature

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