The title Schiff base compound, C(17)H(13)N(3)O(3), crystallizes in a zwitterionic form and exists in a trans configuration about the C=N bond. The mol-ecule is slightly twisted, the dihedral angle between the benzene ring and naphthalene ring system being 10.80 (9)°. The nitro group is twisted relative to the plane of the benzene ring [dihedral angle = 8.88 (12)°]. Bifurcated intra-molecular N...

In the title centrosymmetric mononuclear nickel(II) complex, [Ni(C(13)H(20)N(2)O(2))(2)](ClO(4))(2), the Ni(II) atom is four-coordinated by the imine N and phenolate O atoms of the zwitterionic forms of two Schiff base ligands in a square-planar coordination geometry. In the crystal structure, mol-ecules are linked through inter-molecular N-H⋯O hydrogen bonds, forming chains running along the a...

In the title compound, [ZnI(2)(C(13)H(19)N(3)O)], the Zn(II) ion is five-coordinated in a distorted square-pyramidal geometry, in which the basal plane is defined by three N atoms from the Schiff base ligand and one iodide ion. A second iodide ligand, situated in the apical position, completes the coordination geometry. In the crystal structure, C-H⋯O hydrogen bonds link a pair of mol-ecules ar...

The title compound, C(12)H(14)N(5)O(2) (+)·Br(-), is the hydro-bromide salt of a Schiff base in which protonation has taken place at the pyridine N atom. This organic cation is essentially planar (r.m.s. of all fitted non-H atoms = 0.0448 Å). In the crystal, N-H⋯Br hydrogen bonds as well as C-H⋯O and C-H⋯Br inter-actions connect the mol-ecules, forming a three-dimensional network.

The title Schiff base compound, C(14)H(9)Cl(3)N(2)O, exists in a trans configuration with respect to the C=N bond and the dihedral angle between the two benzene rings is 13.5 (2)°. In the crystal, inter-molecular N-H⋯O hydrogen bonds link adjacent mol-ecules into extended C(4) chains propagating along the c-axis direction.

In the title mononuclear cobalt(III) compound, [Co(C(9)H(8)ClNO(2))(C(9)H(9)ClNO(2))], the Co(II) atom is six-coordinated by two imine N atoms, two phenolate O atoms, and one hy-droxy and one oxide O atom from two Schiff base ligands, forming an octa-hedral geometry. In the crystal structure, adjacent mol-ecules are linked through inter-molecular O-H⋯O hydrogen bonds. The 2-oxidoethyl group is ...

In the title mononuclear copper(II) complex, [Cu(C(12)H(17)N(2)O(2))(NCS)], the Cu(II) atom is four-coordinated by an NNO-donor set of the tridentate Schiff base ligand and the N atom of a terminal thio-cyanate ligand in a slightly distorted square-planar geometry.

A new monoclinic polymorph of the title compound, [V(2)(C(10)H(13)N(2)O)(2)O(4)], which is a centrosymmetric dimer, crystallizes in space group P2(1)/c, whereas the previously known polymorph crystallizes in the ortho-rhom-bic space group Pbca [Mokry & Carrano (1993 ▶). Inorg. Chem.32, 6119-6121]. Each V(V) atom is six-coordinated by one oxide group, two N atoms and one O atom from the Schiff b...

The Co(II) atom in the title monomeric Schiff base complex, [CoCl(2)(C(21)H(22)N(2))], is bonded to two Cl atoms and to two N atoms of the Schiff base ligand N,N'-bis-[(E)-3-phenyl-prop-2-en-1-yl-idene]propane-1,3-diamine in a distorted tetra-hedral geometry. The mol-ecule has an idealised mirror symmetry, but is not located on a crystallographic mirror plane.

In the title compound, [Fe(C(14)H(12)NOSe(2))(2)], the Fe(II) ion (site symmetry ) is four-coordinated by two N,O-bidentate Schiff base ligands, resulting in a slightly distorted trans-FeN(2)O(2) square-planar coordination for the metal ion.