The synthesis, characterization and biological activity of Cu(II) and Ni(II) complexes derived from tridentate Schiff base ligand 3-hydroxy-4-(pyridine-2-yl methylene amino) benzoic acid (HL) was obtained by the condensation of 2-Pyridine carboxaldehyde with 4-amino 3-hydroxy benzoic acid has been described. The complexes were characterized based on elemental analyses, molar conductivity measur...

The Schiff base molecule of the title compound, C(14)H(12)N(4)O(6)·C(5)H(5)N, was obtained from the condensation reaction of 2-hy-droxy-3-meth-oxy-benzaldehyde and 2,4-dinitro-phenyl-hydrazine. The C=N bond of the Schiff base has a trans arrangement and the dihedral angle between the two benzene rings is 3.49 (10)°. An intra-molecular N-H⋯O hydrogen bond generates an S(6) ring. In the crystal, ...

In the title dinuclear complex, [CuGd(C(20)H(22)N(2)O(4))(NO(3))(3)], the Cu(II) ion is located in the inner N(2)O(2) cavity of the Schiff base ligand and adopts a distorted square-planar geometry. The Gd(III) ion is ten-coordinate being bound to ten O atoms, four from the Schiff base ligand and six from three bidentate nitrate anions. The Cu(II) and Gd(III) ions are linked by two phenolate O a...

Reactions of MnX(2) meltsalt (X = Cl and ClO(4)) and a quinquedentate Schiff base ligand together with its coligand azides in MeOH produced the unprecedented assembly of novel octa- and hexadecanuclear manganese clusters containing two and four alternant tetrahedral Mn(III)(3)Mn(II) cores bridged by Schiff base ligands and versatile azides groups. The magnetic measurements on both compounds ind...

The title compound, C(14)H(12)N(2)O(3)·CH(4)O, consists of a Schiff base mol-ecule and a methanol mol-ecule of crystallization. The Schiff base mol-ecule is nearly planar, the dihedral angle between the planes of the two benzene rings being 7.2 (2)°. The mol-ecule exists in the trans configuration with respect to the methyl-idene unit. In the crystal structure, the Schiff base and methanol mol-...

Two-dimensional covalent-organic frameworks (2D-COFs) on surfaces offer a facile route to new 2D materials. Schiff-base condensation reactions have proven to be an effective fabrication route for such materials. We present scanning tunneling microscopy (STM) and X-ray photoelectron spectroscopy (XPS) studies of porphyrin 2D-COFs grown at a solid-vapour interface. XPS shows that covalent links b...

In the title compound, C(16)H(15)ClN(2)O(3)·H(2)O, the water mol-ecule is linked to the Schiff base mol-ecule via an O-H⋯O hydrogen bond. In the Schiff base mol-ecule, an intramolecular O-H⋯N hydrogen bond occurs and the dihedral angle between the two benzene rings is 20.5 (5)°. In the crystal, the Schiff base and water mol-ecules are linked by inter-molecular N-H⋯O and O-H⋯O hydrogen bonds, fo...

A Schiff base 3 has been synthesized by equimolar reaction (condensation) of sulfonamide i.e. sulfamethoxypyridazine 1 and substituted aromatic aldehyde i.e. 2-Hydroxy-1-Napthalene aldehyde 2. The synthesized Schiff base 3 and its Metal (II) complexes were characterized by its physical, analytical (CHN analysis) and spectral (UV & IR) analysis. The Staphylococcus aureus and Escherichia coli bac...