Bis 1,3-dihydroxy-2-hydroxymethyl-2-(5-nitro-2-oxidobenzylideneamino) propane-kappa N-3,O,O 'zinc(II) pyridine solvate

The Zn-II atom in the title complex, [Zn(C11H13N2O6)(2)]center dot-C5H5N, is chelated by a terdentate Schiff base ligand in a slightly distorted octahedral geometry. One of the coordinated hydroxyl groups forms a hydrogen bond with the pyridine solvent molecule. In the crystal structure, other hydroxyl groups are engaged in intermolecular hydrogen bonding, forming a two-dimensional layer

Bis 1,3-dihydroxy-2-hydroxymethyl-2-(2-oxidobenzylideneamino)propane-kap pa N-3,O,O ' nickel(II) pyridine solvate

The Ni-II atom in the title complex, [Ni(C11H14NO4)(2)]center dot C5H5N, is chelated by a terdentate Schiff base anion in a slightly disotorted octahedral geometry. One of the two coordinated hydroxyl groups forms a hydrogen bond to the pyridine solvent while other hydroxyl groups are engaged in intermolecular hydrogen bonding, forming a two-dimensional layer

Bis 1,3-dihydroxy-2-hydroxymethyl-2-(5-nitro-2-oxidobenzylideneamino) propane-kappa N-3,O,O ' nickel(II) pyridine solvate

The Ni-II atom in the title complex, [Ni(C11H13N2O6)(2)]center dot C5H5N, is chelated by a terdentate Schiff base anion in a slightly octahedral geometry. One of the coordinated hydroxyl groups forms a hydrogen bond with the pyridine solvent molecule. In the crystal structure, other hydroxyl groups are involved in intermolecular hydrogen bonding, forming a two-dimensional layer

N'-(2-Hydr-oxy-5-nitro-benzyl-idene)-2-(1H-indol-3-yl)acetohydrazide

The mol-ecule of the title compound, C(17)H(14)N(4)O(4), uses its amide -NH- group to form a hydrogen bond to the amido -C(=O)- group of an adjacent mol-ecule to furnish a linear chain structure. The hydr-oxy group forms an intra-molecular hydrogen bond; the indolyl -NH- unit does not engage in any strong hydrogen-bonding inter-actions

3-Hydroxysalicylaldehyde 2-thienoylhydrazone

The two independent molecules of the title compound, C12H 10N2O3S, are approximately planar and one is stacked over the other. One of the two molecules interacts with its symmetry-related neighbors to form a hydrogen-bonded helical chain that runs along the shortest axis of the orthorhombic unit cell. The second independent molecule does not form such a chain; instead, it is merely linked to the other independent molecule by a hydrogen bond. © 2005 International Union of Crystallography Printed in Great Britain - all rights reserved

3-Hydroxysalicylaldehyde 2-furoylhydrazone

The molecular structure of C12H10N2O 4 was investigated. The molecule was found to be planar and two molecules were stacked over one another at a distance of 3.6 Å. In the compound, the 3-hydroxy substituent was observed to be forming an intermolecular hydrogen bond to the carbonyl O atom of an adjacent molecule. The molecules were linked by hydrogen bonds into a three-dimensional network

Bis[1,3-dihydr-oxy-2-hydroxy-methyl-2-(5-nitro-2-oxidobenzyl-ideneamino) propane-κ3 N,O,O′]zinc(II) trihydrate

The Zn atom in the title compound, [Zn(C11H13N2O6)2]·3H2O, is chelated by the two terdentate Schiff base anions, resulting in a trans-ZnN2O4 octa-hedral geometry. The crystal packing is stabilized by O - H⋯O hydrogen bonds, leading to a three-dimensional network structure. © 2007 International Union of Crystallography. All rights reserved

Synthesis, characterization and X-ray structures of 2,6-diacetylpyridinebis(benzenesulfonylhydrazide) and its zinc(II) complex

2,6-Diacetylpyridinebis(benzenesulfonylhydrazide) (2,6-DAPBSH) and its zinc(II) complex have been synthesized and characterized by X-ray crystallography. The ligand crystallizes in the monoclinic crystal system, space group Cc, with cell parameter = 16.808(2) angstrom, b = 16.328(2) angstrom, c = 8.2670(11) angstrom, beta = 91.869(9)degrees, while the zinc( II) complex crystallizes in the orthorhombic crystal system, space group Pbcn, with cell parameters a = 14.5927(3) angstrom, b = 9.6502(2) angstrom, c = 20.5610(5) angstrom. The metal center is seven-coordinate, with an approximate pentagonal bipyramidal configuration of the chelating ligand and two apically coordinated DMSO molecules

Bis{2-bromo-4-chloro-6-[2-(phenyl-sulfon-yl)hydrazonometh-yl]phenolato-κN,O}copper(II).

The Cu atom in the title compound, [Cu(C(13)H(9)BrClN(2)O(3)S)(2)], is chelated by two deprotonated Schiff base ligands in a square-planar coordination geometry; the Cu atom lies on a center of inversion. The -NH- group of one anion forms an intra-molecular hydrogen bond to the phenolate atom of the symmetry-related ion