Abstract
In the centrosymmetric binuclear cation of the title compound, [Cu(C8H7O4)(H2O)(C5H5N) 2](2)(ClO4)(2), the Cu-II atoms are bridged by a pair of two dehydroacetate anions in a bis-/monodentate mode. The distorted octahedral N2O4 coordination sphere of the metal cation is completed by two pyridine N atoms and one O atom of a water molecule. The complex cations and the perchlorate counter anions are arranged in layers parallel to (100). O-H center dot center dot center dot O hydrogen bonds between the coordinating water molecules and the perchlorate anions constitute ribbons parallel to [101]. C-H center dot center dot center dot O hydrogen bonds are also observed.