Tetrakis(2,2′-bipyridyl)dichloridodi-μ3-hydroxido-di-μ2-hydroxido-tetracopper(II) dinitrate hexahydrate

Abstract

The tetra­nuclear copper(II) title complex, [Cu4Cl2(OH)4(C10H8N2)4](NO3)2·6H2O, has a crystallographically imposed centre of symmetry. The metal atoms display a distorted tetragonal-pyramidal coordination geometry, and are linked by two μ 2- and two μ3-hydroxo groups, assuming a chair-like conformation for the Cu4O2 core. In the crystal, the complex mol­ecules are linked into a three-dimensional network by inter­molecular O—H⋯O, O—H⋯Cl, C—H⋯O and C—H⋯Cl hydrogen bonds and π–π stacking inter­actions with centroid–centroid separations of 3.724 (2) and 3.767 (3) Å.