(1-{2-[2-(2-Ammonio­ethyl­amino)ethyl­amino]ethyl­imino­meth­yl}-2-naphtholato-κ4 O,N,N′,N′′)chloridocopper(II) chloride

In the square-pyramidal title complex, [CuCl(C17H24N4O)]Cl, the CuII atom is coordinated by three N atoms [Cu—N 1.946 (2), 2.010 (2), 2.085 (3) Å], one O atom [Cu—O 1.910 (2) Å] and one apical Cl atom [Cu—Cl 2.6437 (9) Å]. The three coordinated N and one O atom are almost coplanar, with a maximum deviation of 0.0268 Å. The tetra­dentate ligand forms two five-membered (N—Cu—N) and one six-membered (N—Cu—O) chelate rings with bite angles of 84.06 (10), 85.30 (10) and 91.70 (9)°, respectively. The two N—Cu—N chelate rings are non-planar

A new Schiff base nickel(II) complex: {5,5′-dihydr­oxy-2,2′-[o-phenyl­enebis(nitrilo­methyl­idyne)]diphenolato}nickel(II) methanol disolvate

The monomeric title nickel(II) complex of a salicylaldimine, [Ni(C20H14N2O4)]·2CH3OH, was obtained by the reaction of 2,4-dihydroxy­benzaldehyde and 1,2-phenyl­enediamine with nickel(II) acetate. The NiII atom is coordinated by two N atoms [Ni—N = 1.839 (2) Å] and two O atoms [Ni—O = 1.8253 (19) Å] in an approximately square-planar geometry. In the crystal structure, inter­molecular O—H⋯O hydrogen bonds link the mol­ecules into a chain along [001]

Bis[2-(2-hydroxy-3-meth­oxy­phen­yl)benzimidazolium] tetrachlorido­cuprate(II) methanol disolvate

In the title compound, (C14H13N2O2)2[CuCl4]·2CH4O, the geometry of the CuC14 2− ions (Cu site symmetry 2) is inter­mediate between tetra­hedral and square-planar. The dihedral angle between the benzimidazole and benzene ring systems is 8.74(14)°. A network of N—H⋯O, N—H⋯Cl and O—H⋯Cl hydrogen bonds helps to consoldiate the structure. Aromatic π–π stacking inter­actions involving the benzimidazole ring system, with a centroid–centroid distance of 3.785 (3) Å, also occur

Hexa­kis­(dimethyl sulfoxide-κO)nickel(II) bis­(2,2-dicyano­ethene-1,1-dithiol­ato-κ2 S,S′)nickelate(II)

The reaction of NiCl2·6H2O with sodium 2,2-dicyano­ethene-1,1-dithiol­ate [Na2(i-mnt)] in dimethyl sulfoxide produces the title complex, [Ni(C2H6OS)6][Ni(C4N2S2)2]. There is half each of an [Ni(C2H6OS)6]2− complex anion and an [Ni{(CH3)2SO}6]2+ complex cation in the asymmetric unit. The i-mnt ligand coordinates in a bidentate manner to the Ni atom in the anion through the two chelating S atoms in an approximate square-planar geometry. The Ni atom in the complex cation has an octahedral coordination environment with six dimethyl sulfoxide mol­ecules as ligands

Bis{μ-1-[(2-oxidophen­yl)imino­meth­yl]-2-naphtholato}bis­[pyridine­copper(II)]

The dinuclear title complex, [Cu2(C17H11NO2)2(C5H5N)2], consists of centrosymmetric dimers in which the CuII atom displays an elongated square-pyramidal coordination geometry. The conformation of the dimer is stabilized by inter­molecular C—H⋯O hydrogen bonds and by π–π aromatic stacking inter­actions involving the pyridine and benzene rings with centroid–centroid separations of 3.624 (3) Å

Bis(benzo-15-crown-5-κ5 O)barium tetrakis­(isothio­cyanato-κN)cobaltate(II)

In the title compound, [Ba(C14H20O5)2][Co(NCS)4], the BaII and CoII ions are situated on twofold rotational axes, so asymmetric unit contains half each of the complex cations and anions. The CoII ion is coordinated by four N atoms [Co—N 1.83 (2), 1.95 (3) Å] in a distorted tetra­hedral geometry. The BaII ion is coordinated by ten O atoms [Ba—O 2.766 (19)–2.859 (19) Å] from two benzo-15-crown-5 ligands in a sandwich-like configuration

1,1′-[(1E,11E)-5,8-Dioxa-2,11-diazo­nia­dodeca-1,11-diene-1,12-di­yl]dinaph­thal­en-2-olate

The title compound, C28H28N2O4, crystallizes in a zwitterionic form with deprotonated naphthol hy­droxy groups and protonated imine N atoms. The asymmetric unit contains one half-mol­ecule located on a twofold rotation axis. Intra­molecular N—H⋯O hydrogen bonds occur and the two bicyclic ring systems form a dihedral angle of 64.2 (1)°. In the crystal, weak inter­molecular C—H⋯O hydrogen bonds link the mol­ecules into layers parallel to the bc plane

[5,5′-Dihydroxy-2,2′-[o-phenylenebis(nitrilomethylidyne)]diphenolato}copper(II) methanol disolvate

In the title compound, [Cu(C20H14N2O4)]·2CH3OH, the CuII ion is coordinated by two N [Cu—N = 1.933 (2) and 1.941 (2) Å] and two O [Cu—O = 1.890 (2) and 1.9038 (19) Å] atoms from the tetradentate Schiff base ligand 5,5′-dihydroxy-2,2′-[o-phenylenebis(nitrilomethylidyne)]diphenolate (L) in a distorted square-planar geometry. In the crystal, intermolecular O—H...O hydrogen bonds link two CuL molecules and four solvent molecules into a centrosymmetric cluster. The crystal packing exhibits short intermolecular C...C contacts of 3.185 (4) and 3.232 (4) Å