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N'-[(E)-4-Bromo-benzyl-idene]-1-benzofuran-2-carbohydrazide monohydrate.

ABSTRACT: The title compound, C(16)H(11)BrN(2)O(2)·H(2)O, exists in a trans conformation with respect to the N=C bond [1.2815 (14) Å] and the benzofuran ring system forms a dihedral angle of 2.96 (5)° with the benzene ring. In the crystal, the ketone O atom accepts two O-H⋯O and one C-H⋯O hydrogen bond, and the water O atom accepts an N-H⋯O inter-action. Together, these lead to infinite layers lying parallel to (100).

SUBMITTER: Fun HK

PROVIDER: S-EPMC3393932 | biostudies-literature |

REPOSITORIES: biostudies-literature

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(E)-N'-(4-Chloro-benzyl-idene)-1-benzofuran-2-carbohydrazide monohydrate.

Project description:The title compound, C(16)H(11)ClN(2)O(2)·H(2)O, exists in an E conformation with respect to the N=C bond. The benzofuran ring system forms a dihedral angle of 1.26 (4)° with the benzene ring. In the crystal, mol-ecules are linked via (N,C)-H⋯O bifurcated acceptor hydrogen bonds and (O,O,C)-H⋯O trifurcated acceptor hydrogen bonds, forming layers parallel to the bc plane.

| S-EPMC3393970 | biostudies-literature

2'-(3-Hydroxy-benzyl-idene)pyrazine-2-carbohydrazide monohydrate.

Project description:The title compound, C(12)H(10)N(4)O(2)·H(2)O, was synthesized by the reaction of pyrazine-2-carboxylic acid hydrazide and 3-hydroxy-benzaldehyde in ethanol. In the crystal structure, the organic mol-ecules are linked into extended chains by inter-molecular N(amide)-H?O(hydr-oxy) hydrogen bonds. Additional hydrogen bonds between the water mol-ecule and three adjacent organic mol-ecules, as well as face-to-face ?-? stacking inter-actions between the benzene and pyrazine rings [centroid-to-centroid separation = 3.669?(2)?Å and offset = 1.362?Å], link the mol-ecules into a three-dimensional framework.

| S-EPMC2915038 | biostudies-literature

N'-[(E)-3-Bromo-benzyl-idene]pyrazine-2-carbohydrazide.

Project description:In the title compound, C12H9BrN4O, the dihedral angle between the aromatic rings is 12.16?(12)°. An intra-molecular N-H?N hydrogen bond closes an S(5) ring. In the crystal, C-H?O hydrogen bonds link the mol-ecules into C(6) chains propagating in [010]. Very weak aromatic ?-? stacking [centroid-centroid separations = 3.9189?(15) and 3.9357?(15)?Å] is also observed.

| S-EPMC3884304 | biostudies-literature

N'-[(E)-4-Chloro-benzyl-idene]pyridine-4-carbohydrazide monohydrate.

Project description:The asymmetric unit of the title compound, C(13)H(10)ClN(3)O·H(2)O, consists of two crystallographically independent Schiff base mol-ecules which exist in an E conformation with respect to the C=N double bond, and two independent water mol-ecules. In the crystal, the Schiff base and water mol-ecules are linked into a three-dimensional network via N-H⋯O, O-H⋯N, O-H⋯O and C-H⋯O hydrogen bonds. The crystal studied was a pseudo-merohedral twin with twin law (101 0-10 00-1) and a component ratio of 0.792 (2):0.208 (2).

| S-EPMC3394078 | biostudies-literature

N'-(3-Bromo-4-methoxy-benzyl-idene)nicotinohydrazide monohydrate.

Project description:In the title compound, C(14)H(12)BrN(3)O(2)·H(2)O, the benzene ring is oriented at a dihedral angle of 39.66 (11)° with respect to the pyridine ring. The solvent water mol-ecule links with the organic compound via O-H⋯O, O-H⋯N and N-H⋯O hydrogen bonding.

| S-EPMC2969945 | biostudies-literature

(E)-N'-[4-(Methyl-sulfan-yl)benzyl-idene]furan-2-carbohydrazide monohydrate.

Project description:In the title compound, C(13)H(12)N(2)O(2)S·H(2)O, the dihedral angle between the aromatic rings is 35.34?(19)° and an intra-molecular N-H?O hydrogen bond generates an S(5) ring. In the crystal, mol-ecules are linked by N-H?O and O-H?O hydrogen bonds, generating (001) sheets.

| S-EPMC3007322 | biostudies-literature

N'-[(E)-2-Hydroxy-benzyl-idene]-5-methyl-isoxazole-4-carbohydrazide monohydrate.

Project description:In the structure of the title compound, C(12)H(11)N(3)O(3)·H(2)O, the dihedral angle formed by the benzene and isoxazole rings is 2.03 (8)°. The mol-ecular conformation is stabilized by an intra-molecular O-H⋯N hydrogen bond. In the crystal structure, mol-ecules are linked into a three-dimesional network by inter-molecular N-H⋯O, O-H⋯N and O-H⋯O hydrogen bonds, and by π-π stacking inter-actions involving adjacent benzene and isoxazole rings [centroid-centroid separation = 3.663 (2) Å].

| S-EPMC2971927 | biostudies-literature

(E)-N'-(4-Bromo-benzyl-idene)-3,4-dihydroxy-benzohydrazide monohydrate.

Project description:In the title compound, C(14)H(11)BrN(2)O(3)·H(2)O, the dihedral angle between the two benzene rings of the Schiff base is 22.7?(2)° and an intra-molecular O-H?O hydrogen bond is observed. In the crystal, mol-ecules are linked into layers parallel to the ab plane by O-H?O and N-H?O hydrogen bonds.

| S-EPMC2970230 | biostudies-literature

N'-[(E)-2-Hy-droxy-5-iodo-benzyl-idene]furan-2-carbohydrazide monohydrate.

Project description:The organic mol-ecule of the title monohydrate, C(12)H(9)IN(2)O(3)·H(2)O, features a disordered furyl ring with the major component [site occupancy = 0.575?(18)] having the carbonyl O and furyl O atoms syn, and the other conformation having these atoms anti. The mol-ecule is slightly twisted with the dihedral angle between the benzene and furyl rings being 10.3?(6)° (major component). An intra-molecular O-H?N(imine) hydrogen bond is formed. In the crystal, the water mol-ecule accepts a hydrogen bond from an amine H atom, and forms two O-H?O(carbon-yl) hydrogen bonds, thereby linking three different carbohydrazide mol-ecules. The result is a supra-molecular layer parallel to (001). The closest contacts between layers are of the type I?I, at a distance of 3.6986?(6)?Å.

| S-EPMC3275173 | biostudies-literature

N'-(2-Hydr-oxy-3-methoxy-benzyl-idene)-1,3-benzodioxole-5-carbohydrazide monohydrate.

Project description:Single crystals of the title compound, C(16)H(14)N(2)O(5)·H(2)O, were obtained from a condensation reaction of 1,3-benzodioxole-5-carbohydrazide and 3-methoxy-salicylaldehyde in a 95% ethanol solution. The asymmetric unit consists of a Schiff base mol-ecule, which assumes an E configuration with respect to the C=N bond, and a water mol-ecule of crystallization. The dihedral angle between the two substituted benzene rings is 12.7 (2)°. In the crystal structure, mol-ecules are linked through inter-molecular N-H⋯O and O-H⋯O hydrogen bonds, forming layers parallel to the bc plane.

| S-EPMC2967948 | biostudies-literature

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