(μ-5-Carboxybenzene-1,3-dicarboxylato-κ<sup>2</sup><i>O</i><sup>1</sup>:<i>O</i><sup>3</sup>)bis[bis(2,2′-bipyridine-κ<sup>2</sup><i>N</i>,<i>N</i>′)copper(II)] 5-carboxybenzene-1,3-dicarboxylate 2,2′-bipyridine solvate tridecahydrate
Acta crystallographica. Section E