μ-Adipato-bis-[chlorido(2,2':6',2''-terpyridine)-copper(II)] tetra-hydrate

In the title compound, [Cu(2)(C(6)H(8)O(4))Cl(2)(C(15)H(11)N(3))(2)]·4H(2)O, the dinuclear copper complex is located on a crystallographic inversion centre. Each Cu atom is in a distorted square-pyramidal coordination environment, with one O atom of an adipate dianion and three N atoms from the 2,2':6',2''-terpyridine ligand occupying the basal plane, and one chlorine in the apical site. In addition, there is weak Cu-O inter-action opposite of the chlorine with a distance of 2.768 (1) Å. The adipate ligand adopts a gauche-anti-gauche conformation. The inter-stitial water mol-ecules form hydrogen-bonded tertramers that are connected to the complexes via O-H⋯O and O-H⋯Cl hydrogen bonds, thus leading to the formation of tightly hydrogen-bonded layers extending perpendicular to the b-axis direction.