The central Ni(II) atom in the title complex, [Ni(C(16)H(13)BrN(2)O(2))(C(5)H(5)N)], is in a square-planar trans-N(2)O(2) environment defined by the NO(2) donor atoms of the tridentate hydrazone ligand and the monodentate pyridine ligand. The pyridine mol-ecule forms a dihedral angle of 9.99 (11)° with the least-squares plane through the NiN(2)O(2) atoms.

In each of the two independent mol-ecules in the asymmetric unit of the title compound, [Cu(C(13)H(15)NO(3))(C(3)H(4)N(2))], the Cu(II) atom is four-coordinated by two O atoms and the N atom of the tridentate Schiff base ligand and one N atom from the imidazole ligand in a distorted square-planar geometry. In the crystal structure, mol-ecules are linked by inter-molecular N-H⋯O hydrogen bonds.

The complete mol-ecule of the title mononuclear zinc(II) complex, [Zn(NCS)(2)(C(13)H(13)N(3))], is generated by crystallographic twofold symmetry, with the metal atom lying on the rotation axis. The pendant methyl group of the ligand is statistically disordered over two sites. The Zn(2+) cation is coordinated by the N,N',N''-tridentate Schiff base ligand, and by two thio-cyanate N atoms, formin...

In the title mononuclear copper(II) compound, [Cu(C(2)O(4))(C(4)H(12)N(2)O)], the Cu(II) ion has a slightly distorted square-pyramidal geometry, with a tridentate N-(2-hydroxy-ethyl)ethyl-enediamine (HydEt-en) and a bidentate oxalate (ox) ligand. The N atoms of the HydEt-en ligand and the O atoms of ox ligand form the basal plane, while the O atom of the ethanol group of the HydEt-en ligand is ...

The crystal structure of the title complex, [Cu(2)(C(15)H(10)Cl(2)N(2)O(2))(2)(C(5)H(5)N)(2)], features centrosymmetric dimers. The Cu(II) ion is penta-coordinated in a quadratic pyramidal mode. The quadratic plane is formed by the O,O',N-tridentate ligand and a pyridine mol-ecule. The fifth coordination site is occupied by the O atom of another ligand showing a significantly longer Cu-O bond.

In the title compound, [CdCl(2)(C(13)H(10)N(6))], the 2-amino-4,6-bis(pyridin-2-yl)-1,3,5-triazine (HABPT) ligand adopts a tridentate tripyridyl coordination mode. The Cd(II) atom is five-coordinated by three N atoms from the HABPT ligand and two chloride ions. In the crystal, mol-ecules are linked via N-H⋯N, N-H⋯Cl and C-H⋯Cl hydrogen bonds into a supra-molecular network.

In the mononuclear title complex, [Ni(C(14)H(19)N(2)O(3))(NCS)], the nickel(II) atom is four-coordinated in a square-planar geometry by the O and N atoms of the tridentate Schiff base ligand and by the N atom of a thio-cyanate ligand. The crystal structure is stabilized by inter-molecular C-H⋯S and C-H⋯O hydrogen bonds, forming a three-dimensional network.

the present work describes the studies on the coordination behaviour of 4[n-(benzalidene) amino]antipyrine semicarbazone (baaps) (i), 4[n-(furfural)amino]antipyrine semicarbazone (ffaaps) (ii) and 4[n-(cinnamalidene)amino]antipyrine semicarbazone (caaps) (iii) in presence of dimethyl sulfoxide (dmso) or diphenyl sulfoxide (dpso) towards th4+ and uo22+ salts. all the complexes were isolated in n...