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

ABSTRACT: 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.

SUBMITTER: Fun HK

PROVIDER: S-EPMC3393970 | biostudies-literature |

REPOSITORIES: biostudies-literature

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

Project description: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).

| S-EPMC3393932 | biostudies-literature

N'-(4-Chloro-benzyl-idene)furan-2-carbohydrazide monohydrate.

Project description:In the title compound, C(12)H(9)ClN(2)O(2)·H(2)O, the dihedral angle between the aromatic rings is 13.9?(2)° and an intra-molecular N-H?O hydrogen bond occurs. In the crystal structure, the components are linked by N-H?O, O-H?O and C-H?O hydrogen bonds.

| S-EPMC2983546 | biostudies-other

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-other

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)-2-Chloro-benzyl-idene]thio-phene-2-carbohydrazide.

Project description:There are two independent mol-ecules in the asymmetric unit of the title compound, C12H9ClN2OS, a Schiff base derived from hydrazide, in which the dihedral angles between the thio-phene and benzene rings are 3.6?(3) and 7.3?(3)°. In the crystal, the two independent mol-ecules are arranged about an approximate non-crystallographic inversion center and are connected by two N-H?O hydrogen bonds. Weak C-H?Cl contacts are also present. Conversely, there are neither significant aromatic stacking inter-actions nor contacts involving S atoms.

| S-EPMC3884466 | biostudies-literature

4-Chloro-N'-[(E)-2-chloro-benzyl-idene]benzohydrazide monohydrate.

Project description:The title compound, C14H10Cl2N2O·H2O, has a nearly planar extended conformation [C-N-N-C = -173.66?(15)°]. The dihedral angle between the aromatic rings is 4.6?(2)°. The water mol-ecules alternate with benzohydrazide mol-ecules in chains formed by O-H?O hydrogen bonds which run parallel to the a axis. These chains are linked to neighboring chains through N-H?O and C-H?O inter-actions, forming a layer parallel to (001).

| S-EPMC4011300 | 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

4-Chloro-N'-(2-hydroxy-benzyl-idene)benzohydrazide monohydrate.

Project description:The asymmetric unit of the title compound, C(14)H(11)ClN(2)O(2)·H(2)O, contains a Schiff base mol-ecule and a water mol-ecule of crystallization. The dihedral angle between the two aromatic rings is 27.3?(4)°. In the crystal structure, mol-ecules are linked into a two-dimensional network parallel to the bc plane by inter-molecular O-H?O and N-H?O hydrogen bonds involving the water mol-ecules.

| S-EPMC2960496 | 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

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