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2-Hydroxy-imino-N'-[1-(2-pyrid-yl)ethyl-idene]propanohydrazide.

ABSTRACT: The title compound, C(10)H(12)N(4)O(2), features an intra-molecular N-H⋯N hydrogen bond formed between the imine NH and oxime N atoms. The oxime group and the amide C=O bond are anti to each other. In the crystal, mol-ecules are connected by O-H⋯O hydrogen bonds into supra-molecular zigzag chains along the c axis.

SUBMITTER: Moroz YS

PROVIDER: S-EPMC2969988 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Dichlorido{2-hydroxy-imino-N'-[1-(2-pyrid-yl)ethyl-idene]propanohydrazide-κN,N',O}zinc(II) hemihydrate.

Project description:The title compound, [ZnCl(2)(C(10)H(12)N(4)O(2))]·0.5H(2)O, was readily prepared by the reaction between ZnCl(2) and 2-hydroxy-imino-N'-[1-(2-pyrid-yl)ethyl-idene]propanohydrazide. The Zn atom has a distorted trigonal-bipyramidal geometry with two Cl atoms and one azomethine N atom in the equatorial plane and one pyridine N atom and one amide O atom in the axial positions. In the crystal structure, complex mol-ecules are connected in pairs by N-H⋯Cl hydrogen bonds, formed between the amide NH of one mol-ecule and the Cl atom of a neighboring one. Mol-ecular pairs are connected by hydrogen bonds involving the uncoordinated water mol-ecule, which lies on a twofold axis.

| S-EPMC2960173 | biostudies-literature

Bis{2-hydroxy-imino-N'-[1-(2-pyrid-yl)ethyl-idene]propanohydrazidato}zinc(II) dihydrate.

Project description:The title compound, [Zn(C(10)H(11)N(4)O(2))(2)]·2H(2)O, was prepared by the reaction between Zn(CH(3)COO)(2)·2H(2)O and 2-hydroxy-imino-N'-[1-(2-pyrid-yl)ethyl-idene]propano-hydrazide (Hpop). The central Zn(II) atom has a distorted tetra-gonal-bipyramidal coordination geometry formed by two amide O atoms and four N atoms of two azomethine and two pyridine groups. In the crystal, complex mol-ecules form layers parallel to the crystallographic b direction. The layers are connected by O-H⋯N and O-H⋯O hydrogen bonds involving the solvent water mol-ecules.

| S-EPMC2979945 | biostudies-literature

(E)-N'-(2-Hydroxy-benzyl-idene)-2-(4-isobutyl-phen-yl)propanohydrazide.

Project description:The title hydrazide compound, C(20)H(24)N(2)O(2), exists in a trans configuration with respect to the acyclic C=N bond and an intra-molecular O-H?N hydrogen bond generates an S(6) ring motif. The mean plane through the formohydrazide unit is essentially planar [maximum deviation = 0.025?(2)?Å], and forms dihedral angles of 24.45?(16) and 87.14?(16)° with the two benzene rings. In the crystal structure, inter-molecular N-H?O and C-H?O hydrogen bonds link neighbouring mol-ecules into extended chains along the c axis, which incorporate R(2) (2)(16) ring motifs. An inter-molecular C-H?? inter-action is also observed.

| S-EPMC2980184 | biostudies-literature

2-(4-Isobutyl-phen-yl)-N'-[1-(4-nitro-phen-yl)ethyl-idene]propanohydrazide.

Project description:The mol-ecule of the title compound, C(21)H(25)N(3)O(3), exists in a trans configuration with respect to the ethyl-idene unit. The dihedral angle between the two substituted benzene rings is 86.99?(7)°. The nitro group is twisted from the attached benzene ring at an angle of 17.02?(7)°. In the crystal structure, mol-ecules are linked by pairs of N-H?O hydrogen bonds in a face-to-face manner into centrosymmetric dimers. These dimer units are further linked into chains along the c axis by weak C-H?O inter-actions. These chains are stacked along the b axis. The crystal is further stabilized by weak C-H?? inter-actions.

| S-EPMC2968536 | biostudies-literature

N'-[1-(2-Pyrid-yl)ethyl-idene]nicotino-hydrazide.

Project description:In the the title compound, C(13)H(12)N(4)O, the dihedral angle between the aromatic ring planes is 21.7?(3)°. In the crystal structure, interm-olecular N-H?O hydrogen bonds lead to C(4) chains.

| S-EPMC2915023 | biostudies-literature

[1-Phenyl-2-(4-pyrid-yl)ethyl-idene]hydrazine.

Project description:The title compound, C(13)H(13)N(3), is non-planar, with the pyridine and phenyl rings inclined at an angle of 80.7 (3)°. The central ethyl-idenehydrazine atoms lie in a plane [mean deviation = 0.013 (1) Å], which forms dihedral angles of 88.5 (1) and 9.4 (1)° with the pyridine and phenyl rings, respectively. In the crystal structure, mol-ecules are linked by inter-molecular N-H⋯N hydrogen bonds into infinite chains propagating along the b axis.

| S-EPMC2977769 | biostudies-literature

2-Methyl-N'-[1-(2-pyrid-yl)ethyl-idene]benzohydrazide.

Project description:In the title compound, C(15)H(15)N(3)O, the dihedral angle between the pyridine and benzene rings is 36.3 (2)°. In the crystal, mol-ecules are linked through inter-molecular N-H⋯O hydrogen bonds, forming chains along the b axis.

| S-EPMC3051759 | biostudies-literature

(E,E)-1-(2-Hydroxy-imino-1-phenyl-ethyl-idene)semicarbazide monohydrate.

Project description:In the title compound, C(9)H(10)N(4)O(2)·H(2)O, the oxime unit has an E configuration, and an intra-molecular N-H⋯N hydrogen bond results in the formation of a planar five-membered ring, which is oriented with respect to the aromatic ring at a dihedral angle of 74.82 (17)°. In the crystal structure, inter-molecular O-H⋯O and N-H⋯O hydrogen bonds link the mol-ecules and R(2) (2)(8) ring motifs are apparent.

| S-EPMC2977740 | biostudies-literature

(E)-Ethyl N'-[1-(2-hydroxy-phen-yl)ethyl-idene]hydrazinecarboxyl-ate.

Project description:In the mol-ecule of the title compound, C(11)H(14)N(2)O(3), the dihedral angle between the benzene ring and the hydrazinecarboxyl-ate mean plane is 3.65 (12)°. Intra-molecular C-H⋯N and O-H⋯N hydrogen bonds result in the formation of a nearly planar six-membered ring, which is oriented at a dihedral angle of 2.38 (3)° with respect to the benzene ring, and a five-membered ring having an envelope conformation. In the crystal structure, inter-molecular N-H⋯O and C-H⋯N hydrogen bonds link the mol-ecules. There is a C-H⋯π contact between the benzene ring and the methyl group of the ethyl substituent.

| S-EPMC2960505 | biostudies-literature

(Z)-Ethyl 2-hydroxy-imino-2-(4-nitro-benz-yl)ethanoate.

Project description:The title mol-ecule, C(11)H(10)N(2)O(6), has a Z conformation about the C=N bond of the oxime unit. There are significant twists from planarity throughout the mol-ecule, the most significant being between the hydroxy-imino and ester groups which are effectively orthogonal with an N-C-C-O(carbon-yl) torsion angle of 91.4?(2)°. The crystal packing features oxime-benzoyl O-H?O contacts that lead to chains along [010] and C-H?O interactions also occur.

| S-EPMC2980268 | biostudies-literature

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