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(E)-N'-(2,5-Dimethoxy-benzyl-idene)-2,4-dihydroxy-benzohydrazide.

ABSTRACT: In the title compound, C(16)H(16)N(2)O(5), the dihedral angle between the two benzene rings is 4.2 (2)° and an intra-molecular O-H⋯O hydrogen bond generates an S(6) ring. In the crystal, mol-ecules are linked into layers lying parallel to the bc plane by O-H⋯O and N-H⋯O hydrogen bonds.

SUBMITTER: Wei JY

PROVIDER: S-EPMC2983919 | biostudies-literature |

REPOSITORIES: biostudies-literature

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(E)-N'-(2,5-Dimethoxy-benzyl-idene)-3,4-dihydroxy-benzohydrazide monohydrate.

Project description:In the title compound, C(16)H(16)N(2)O(5)·H(2)O, the dihedral angle between the two benzene rings is 25.9 (1)°. Intra-molecular O-H⋯O and N-H⋯O hydrogen bonds are observed. In the crystal, the components are linked into a three-dimensional network by O-H⋯O and O-H⋯(O,O) hydrogen bonds.

| S-EPMC2970986 | biostudies-literature

(E)-N'-(3,4-Dimethoxy-benzyl-idene)-2,4-dihydroxy-benzohydrazide methanol solvate.

Project description:The title compound, C(16)H(16)N(2)O(5)·CH(3)OH, was obtained from a condensation reaction of 3,4-dimethoxy-benzaldehyde and 2,4-dihydroxy-benzohydrazide. The non-H atoms of the Schiff base mol-ecule are approximately coplanar (r.m.s. deviation = 0.043?Å) and the dihedral angle between the two benzene rings is 1.6?(1)°. The mol-ecule adopts an E configuration with respect to the C=N double bond. An intra-molecular O-H?O hydrogen bond is observed. The Schiff base and methanol mol-ecules are linked into a two-dimensional network parallel to (10) by inter-molecular N-H?O, O-H?N and O-H?O hydrogen bonds.

| S-EPMC2970482 | biostudies-literature

N'-(2,3-Dimethoxy-benzyl-idene)-2,4-dihydroxy-benzohydrazide.

Project description:In the title compound, C(16)H(16)N(2)O(5), the dihedral angle between the two benzene rings is 8.5?(3)° and the mol-ecule adopts an E configuration with respect to the C=N bond. There is an intra-molecular N-H?O hydrogen bond in the mol-ecule, which generates an S(6) ring. In the crystal, mol-ecules are linked through inter-molecular O-H?O hydrogen bonds, forming layers parallel to the bc plane.

| S-EPMC2979254 | biostudies-other

(2,4-Dimethoxy-benzyl-idene)-2-hydroxy-benzohydrazide ethanol solvate.

Project description:In the planar title mol-ecule, C(16)H(16)N(2)O(4)·C(2)H(6)O, the planar Schiff base molecule is linked to the ethanol solvent mol-ecule by a hydr-oxy-amide hydrogen bond. The hydr-oxy group of the ethanol mol-ecule is a hydrogen-bond donor to the double-bonded N atom of an adjacent Sciff base, pairs of interactions taking place across a center of symmetry and giving rise to a hydrogen-bonded dimer.

| S-EPMC2961356 | biostudies-literature

N'-(2,4-Dimethoxy-benzyl-idene)-3,4,5-trihydroxy-benzohydrazide ethanol solvate.

Project description:The title compound, C(16)H(16)N(2)O(6)·C(2)H(5)OH, was synthesized from 3,4,5-trihydroxy-benzoyl-hydrazide and 2,4-dimethoxy-benzaldehyde in ethanol. The compound is not planar, with the two aromatic planes of the two aromatic rings twisted by 15.6?(1)°. The hydr-oxy groups are involved in both intra-molecular O-H?O and inter-molecular O-H?N and O-H?O hydrogen bonds and a C-H?O interaction also occurs.

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N'-(2,5-Dihydroxy-benzyl-idene)-2-hydr-oxy-3-methyl-benzohydrazide.

Project description:In the title compound, C(15)H(14)N(2)O(4), the dihedral angle between the two benzene rings is 4.1?(2)°. The mol-ecule adopts an E configuration with respect to the C=N bond. There are intra-molecular O-H?N and O-H?O hydrogen bonds in the mol-ecule. In the crystal structure, mol-ecules are linked through inter-molecular N-H?O and O-H?O hydrogen bonds, forming chains running along the c axis.

| S-EPMC2979248 | biostudies-literature

N'-(2,5-Dihydroxy-benzyl-idene)benzene-sulfonohydrazide.

Project description:In the title compound, C(13)H(12)N(2)O(4)S, the dihedral angle between the two aromatic rings is 89.5 (1)°. In the crystal structure, mol-ecules are linked by O-H⋯O(hydr-oxy) and N-H⋯O(sulfon-yl) hydrogen bonds, forming a ribbon that propagates along the b axis; there is also an intra-molecular O-H⋯N hydrogen bond.

| S-EPMC2960431 | biostudies-literature

(E)-N'-(3,4-Dihydroxy-benzyl-idene)-4-nitro-benzohydrazide.

Project description:In the title Schiff base compound, C(14)H(11)N(3)O(5), the dihedral angle between the two benzene rings is 1.6?(1)°. The mol-ecule displays an E configuration about the C=N bond. An intra-molecular O-H?O hydrogen bond is observed. In the crystal, mol-ecules are linked into layers parallel to (101) by O-H?O, N-H?O and C-H?O hydrogen bonds. One of the hydroxyl groups is disordered over two positions, with occupancies of 0.643?(5) and 0.357?(5).

| S-EPMC2977219 | biostudies-literature

(2,4-Dihydroxy-benzyl-idene)dimethyl-ammonium dichloro-phosphinate.

Project description:In the title compound, C(9)H(12)NO(2) (+)·Cl(2)PO(2) (-), the mol-ecular skeleton of the cation is nearly planar with an r.m.s. deviation of 0.0336?Å. In the crystal structure, inter-molecular O-H?O hydrogen bonds link cations and anions into chains running along [10].

| S-EPMC2968160 | biostudies-literature

2-[(E)-2,5-Dimethoxy-benzyl-idene]indan-1-one.

Project description:In the title compound, C(18)H(16)O(3), the mean plane of the nine-membered indane system makes a dihedral angle of 3.71?(17)° with the benzene ring of the dimethoxy-phenyl group. The mol-ecular conformation is stabilized by intra-molecular C-H?O hydrogen contacts. The crystal structure is stabilized by inter-molecular C-H?O inter-actions, which link neighbouring mol-ecules into one-dimensional extended chains along the [100] direction. In the structure, C-H?? inter-actions are also observed.

| S-EPMC2977741 | biostudies-literature

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