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

ABSTRACT: In the title compound, C(19)H(16)N(2)O(2), the benzene ring and the naphthyl ring system form a dihedral angle of 8.7 (3)° and an intra-molecular O-H⋯N hydrogen bond generates an S(6) ring. In the crystal, mol-ecules are linked by N-H⋯O hydrogen bonds, forming C(4) chains propagating in [001].

SUBMITTER: Liu SY

PROVIDER: S-EPMC3099921 | biostudies-literature |

REPOSITORIES: biostudies-literature

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3-Chloro-N'-[(2-hy-droxy-naphthalen-1-yl)methyl-idene]benzohydrazide.

Project description:The title compound, C(18)H(13)ClN(2)O(2), was prepared by the reaction of 2-hy-droxy-1-naphthaldehyde with 3-chloro-benzohydrazide in methanol. An intra-molecular O-H?N hydrogen bond influences the mol-ecular conformation; the benzene ring and naphthyl ring system form a dihedral angle of 17.1?(3)°. In the crystal, inter-molecular N-H?O hydrogen bonds link the mol-ecules into chains propagated in [101].

| S-EPMC3051679 | 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

(E)-N'-[(2-Hy-droxy-1-naphthalen-1-yl)methyl-idene]-3-methyl-benzohydrazide.

Project description:In the title compound, C(19)H(16)N(2)O(2), the benzene ring and naphthyl ring system are inclined at a dihedral angle of 16.1?(3)°. An intra-molecular O-H?N hydrogen bond influences the mol-ecular conformation. In the crystal, mol-ecules are linked through N-H?O hydrogen bonds into chains running along the a axis.

| S-EPMC3099761 | biostudies-literature

N'-[(1E)-(2-Hy-droxy-naphthalen-1-yl)methyl-idene]-2-meth-oxy-benzohydrazide.

Project description:There are three independent mol-ecules in the asymmetric unit of the title compound, C(19)H(16)N(2)O(3), in which the dihedral angles between the naphthalene ring system and the benzene ring are 7.52?(16), 18.15?(18), and 13.9?(2)°. All the mol-ecules exist in the trans configuration with respect to the methyl-idene units. In each mol-ecule there is one O-H?N and one N-H?O intra-molecular hydrogen bond. In the crystal, two of the mol-ecules are linked via a bifurcated N-H?(O,O) hydrogen bond. All three mol-ecules are further linked via C-H?O inter-actions.

| S-EPMC3201446 | biostudies-literature

2-Hy-droxy-N'-(4-hy-droxy-benzyl-idene)-3-methyl-benzohydrazide.

Project description:The title compound, C(15)H(14)N(2)O(3), was prepared by condensing 4-hy-droxy-benzaldehyde and 2-hy-droxy-3-methyl-benzo-hydra-zide in methanol. The two benzene rings make a dihedral angle of 19.03 (11)°. An intra-molecular O-H⋯O hydrogen bond is observed. The crystal structure is stabilized by inter-molecular O-H⋯O and N-H⋯O hydrogen bonds and C-H⋯O inter-actions, which lead to the formation of a three-dimensional network.

| S-EPMC3274990 | biostudies-literature

(E)-N'-[(2-Hy-droxy-naphthalen-1-yl)methyl-idene]-4-methyl-benzene-sulfono-hydrazide.

Project description:In the title compound, C(18)H(16)N(2)O(3)S, the dihedral angle between the planes of the benzene ring and the naphthyl ring system is 83.37?(10)°. An intra-molecular O-H?N hydrogen bond occurs. Inter-molecular N-H?O hydrogen bonds stabilize the crystal structure. There is a ?-? inter-action between the naphthyl ring systems [centroid-centroid distance = 3.7556?(15)?Å]. In addition, naphth-yl-tolyl and naphth-yl-naphthyl C-H?? inter-actions are observed.

| S-EPMC3052163 | biostudies-literature

4-Hy-droxy-N'-[1-(2-hy-droxy-phen-yl)ethyl-idene]benzohydrazide.

Project description:In the title compound, C(15)H(14)N(2)O(3), there is an intra-molecular O-H?N hydrogen bond and the dihedral angle between the two aromatic rings is 13.9?(3)°. In the crystal structure, mol-ecules are stabilized by inter-molecular O-H?O and N-H?O hydrogen bonds.

| S-EPMC2979514 | biostudies-literature

N'-(4-Hy-droxy-benzyl-idene)-2-methyl-benzohydrazide.

Project description:The title hydrazone compound, C(15)H(14)N(2)O(2), was prepared by the condensation of 4-hy-droxy-benzaldehyde with 2-methyl-benzohydrazide in methanol. The dihedral angle between the two benzene rings is 42.3?(2)°. In the crystal structure, mol-ecules are linked by inter-molecular O-H?O, O-H?N and N-H?O hydrogen bonds, forming a three-dimensional framework.

| S-EPMC2983165 | biostudies-literature

N'-(2-Hy-droxy-benzyl-idene)-3-methyl-benzohydrazide.

Project description:The title compound, C(15)H(14)N(2)O(2), is the product of the reaction of 2-hy-droxy-benzaldehyde and 3-methyl-benzo-hydrazide. The dihedral angle between the substituted benzene rings is 19.5?(3)° and an intra-molecular O-H?N hydrogen bond generates an S(6) ring motif. In the crystal, mol-ecules are linked by N-H?O hydrogen bonds to generate C(4) chains propagating in [001] and C-H?O inter-actions to the same O-atom acceptor reinforce the chains.

| S-EPMC3239072 | biostudies-literature

2-Hy-droxy-N'-(5-hy-droxy-2-nitro-benzyl-idene)-3-methyl-benzohydrazide.

Project description:The title compound, C(15)H(13)N(3)O(5), was prepared by condensing 5-hy-droxy-2-nitro-benzaldehyde and 2-hy-droxy-3-methyl-benzohydrazide in methanol. The two benzene rings make a dihedral angle of 3.9?(3)°. An intra-molecular O-H?O hydrogen bond is observed. The crystal structure is stabilized by inter-molecular O-H?O and N-H?O hydrogen bonds, and C-H?O and ?-? inter-actions [centroid-centroid distances = 3.5658?(17)-3.9287?(19)?Å].

| S-EPMC3297290 | biostudies-literature

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