Tetra-μ-acetato-κ⁸O:O′-bis­[(pyridine-2-carbo­nitrile-κN¹)copper(II)]

The title binuclear compound, [Cu₂(CH₃COO)₄(C₆H₄N₂)₂], lies about an inversion center, with the Cu^II cation bridged by four acetate anions and coordinated by a pyridine N atom in a distorted square-pyramidal geometry. The Cu...Cu distance is 2.5997 (15) Å. In the crystal, mol­ecules are linked by weak C—H...O and C—H...N hydrogen bonds into a three-dimensional supra­molecular architecture. The crystal studied was a non-merohedral twin with a minor twin component of 4.1 (1)%.

Tetrakis[μ₃-2-(piperidin-1-yl)ethanolato]tetrakis[chloridocopper(II)]

In the title tetra­nuclear compound, [Cu₄(C₇H₁₄NO)₄Cl₄], each Cu^II cation is N,O-chelated by a piperidineethanolate anion and coordinated by a Cl⁻ anion and two O atoms from neighboring piperidine­ethano­late anions in a distorted NO₃Cl square-pyramidal geometry. The deprotonated hydroxyl groups of the piperidineethanolate anions bridge Cu^II cations, forming the tetra­nuclear complex. All piperidine rings display a chair conformation. In the crystal, there are no significant inter­molecular inter­actions present. The crystal studied was an inversion twin refined with a minor component of 0.18 (5).