Bis(2,2′-bipyridine)bis{μ<sub>3</sub>-<i>cis</i>-<i>N</i>-(2-carboxylatophenyl)-<i>N</i>′-[3-(dimethylamino)propyl]oxamidato(3−)}bis(perchlorato)tetranickel(II) methanol disolvate
Acta crystallographica. Section E