Aqua­bis­[N′-(1,3-dithio­lan-2-ylidene)-2-hy­droxy­benzohydrazidato(0.5−)-κ2 N′,O]sodium(I)

The title compound, [Na(C10H9.5N2O2S2)2(H2O)], is a mol­ecular sodium complex with N′-(1,3-dithio­lan-2-yl)-2-hy­droxy­benzohydrazide ligands with the negative charge spread evenly over both, and a water mol­ecule. The NaI ion coordination is distorted trigonal–bipyramidal, formed by two N and three O atoms, with the NaI ion lying on a twofold rotation axis. Intra­molecular N—H⋯O hydrogen bonds occur. Mol­ecules pack as discrete units and the crystal packing is stabilized by strong O—H⋯O hydrogen bonds, which give rise to chains along [010]; the chains are inter­linked by strong O—H⋯O hydrogen bonds

Bis(2,2′-bi-1H-imidazole)­copper(II) bis­(1,1,3,3-tetra­cyano-2-eth­oxy­propenide)

In the title compound, [Cu(C6H6N4)2](C9H5N4O)2, the Cu2+ ion (site symmetry ) is coordinated by two N,N′-bidentate 2,2′-biimidazole (H2biim) ligands, generating a square-planar CuN4 geometry. The dihedral angle between the aromatic rings in the ligand is 0.70 (9)°. In the polynitrile 1,1,3,3-tetra­cyano-2-eth­oxy­propenide (tcnoet) anion, the C—N, C—C and C—O bond lengths indicate extensive electronic delocalization. An alternative description for the metal-ion geometry is an extremely distorted CuN6 octa­hedron, with two N-bonded tcnoet anions completing the coordination. In the crystal, the components are linked by N—H⋯N and C—H⋯N inter­actions

Bis(acetylacetonato-κ2O,O′)bis(pyridine-κN)nickel(II) dihydrate

The title compound, [Ni(C5H7O2)2(C5H5N)2]·2H2O, crystallizes with two half-molecules in the asymmetric unit. The NiII ion of each unique complex molecule lies on an inversion centre and has an octahedral coordination geometry. The crystal structure features weak O—H...O hydrogen bonds, which form chains running parallel to the a axis

Bis[2-(5-methylsulfanyl-1,3,4-oxadiazol-2-yl-κN3)phenolato-κO1]copper(II)

In the title complex, [Cu(C9H7N2O2S)2], the CuII ion, located on an inversion center, adopts an N2O2 square-planar coordination. The 2-(5-methylsulfanyl-1,3,4-oxadiazol-2-yl)phenolate ligand is chelated to the central CuII ion in an N,O-bidentate manner

Bis(2,2′-bipyridyl-κ2N,N′)chloridonickel(II) nitrate trihydrate

In the title hydrated salt, [NiCl(C10H8N2)2](NO3)·3H2O, the Ni2+ ion is coordinated by two 2,2′-bipyridyl (2,2′-bpy) ligands and a chloride ion in a trigonal–bipyramidal geometry. The chloride ion occupies an equatorial site and the dihedral angle between the 2,2′-bpy ring systems is 72.02 (6)°. In the crystal, the components are linked by C—H...O and O—H...O hydrogen bonds and aromatic π–π stacking interactions [shortest centroid–centroid separation = 3.635 (2) Å], generating a three-dimensional network

A luminescent Schiff-base heterotrinuclear Zn 2 Dy single-molecule magnet with an axial crystal field

International audienc

Synthesis, structures and magnetic properties of dimeric copper and trimeric cobalt complexes supported by bridging cinnamate and chelating phenanthroline

International audienc