Bis(μ-5-carboxylato-1-carboxylatomethyl-2-oxidopyridinium)-κ<sup>2</sup><i>O</i><sup>5</sup>:<i>O</i><sup>1</sup>;κ<sup>2</sup><i>O</i><sup>1</sup>:<i>O</i><sup>5</sup>-[diaqua(phenanthroline-κ<sup>2</sup><i>N</i>,<i>N</i>′)manganese(II)] dihydrate
Acta crystallographica. Section E