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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 | 2009 Aug

REPOSITORIES: biostudies-literature

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

Moroz Yurii S YS Konovalova Irina S IS Iskenderov Turganbay S TS Pavlova Svetlana V SV Shishkin Oleg V OV

Acta crystallographica. Section E, Structure reports online 20090826 Pt 9

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. ...[more]

PMID: 21577640

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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.

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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.

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Project description:In the title complex, [Cu(C(14)H(13)N(3)O)(C(14)H(12)N(3)O)](CCl(3)COO), the central Cu(II) ion exhibits a distorted octa-hedral geometry with the two ligands coordinating in an meridional format. The N(4)O(2) ligand environment is defined by two benzoyl O atoms, two pyridyl N atoms and imino N atoms. As evidenced by the bond lengths, the two benzohydrazone ligands exist in distinctively different forms, one of them as a regular neutral ligand and the other as an anionic enolate arising from deprotonation. The much longer Cu-O bond and longer Cu-N bond lengths in the neutral benzohydrazone ligand imply weak ligation in comparison with the anionic enolate form. The acute angles of the five-membered rings cause a significant deviation from a regular octa-hedral geometry.

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(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.

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