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

In the title compound, [Cu(2)(C(6)H(8)O(4))Cl(2)(C(15)H(11)N(3))(2)]center dot 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 interaction opposite of the chlorine with a distance of 2.768 (1) A. The adipate ligand adopts a gauche-anti-gauche conformation. The interstitial water molecules 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.