(5,5′-Dicarboxybiphenyl-2,2′-dicarboxylato-κ<sup>2</sup><i>O</i><sup>2</sup>,<i>O</i><sup>2′</sup>)bis(1,10-phenanthroline-κ<sup>2</sup><i>N</i>,<i>N</i>′)cobalt(II) dihydrate
Acta crystallographica. Section E