Synthesis and crystal structure of (μ4-oxido)hexakis(μ-chlorido)tetrakis(2-(3-pyridyl)ethane-1-ol)tetracopper(II): A compound with a unique hydrogen bond system stabilizing the network

A new μ4-oxido-bridged cluster of formula [Cu4(μ-Cl)6(μ4-O)L4] (in which L = 2-(3-pyridyl)ethane-1-ol) has been synthesized and fully characterized. The X-ray structure, physical and electronic properties are reported. An unusual network is formed by the hydrogen bond system between the oxygen atoms of the ligand, stabilizing the network structure. A chain-pattern with weak intermolecular interactions along the b axis exists with CuCl–ClCu contacts (3.498 Å) that are marginally shorter than the sum of the van der Waals chloride atomic radii.