Hexa­kis­(dimethyl sulfoxide-κO)nickel(II) bis­(2,2-dicyano­ethene-1,1-dithiol­ato-κ²S,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.

catena-Poly[[[aqua­(5-carb­oxy­pyridine-3-carboxyl­ato-κN)copper(I)]-μ-4,4′-bipyridine-κ²N:N′] monohydrate]

In the title compound, {[Cu(C₇H₄NO₄)(C₁₀H₈N₂)(H₂O)]·H₂O}_n, the Cu^I ion is coordinated by the N atom from a 5-carb­oxy­pyridine-3-carboxyl­ate anion, two N atoms from two 4,4′-bipyridine (4,4′-bipy) ligands and one water mol­ecule in a distorted tetra­hedral geometry. The 4,4′-bipy ligands bridge the Cu^I ions into polymeric chains propagating in [201]. The latticeand the coordinating water mol­ecules as well as the carboxy OH function are involved in the formation of inter­molecular O—H...O hydrogen bonds, which consolidate the crystal packing.

2-(4-Meth­oxy­phen­oxy)acetohydrazide

The title compound, C₉H₁₂N₂O₃, was synthesized by the reaction of ethyl 2-(4-meth­oxy­phen­oxy)acetate with hydrazine hydrate in ethanol. In the acetohydrazide group, the N—N bond is relatively short [1.413 (2) Å], suggesting some degree of electronic delocalization in the mol­ecule. In the crystal, mol­ecules are linked into sheets lying parallel to the ab plane by N—H...N and N—H...O hydrogen bonds.