Poly[[(μ<sub>2</sub>-4,4′-bipyridyl-κ<sup>2</sup><i>N</i>:<i>N</i>′)bis{μ<sub>2</sub>-<i>N</i>-[2-(2-hydroxybenzoyl)carbamothioyl]acetamidato-κ<sup>4</sup><i>O</i>,<i>N</i>,<i>O</i>′:<i>S</i>}bis(nitrato-κ<sup>2</sup><i>O</i>,<i>O</i>′)dicadmium] dimethylformamide tetrasolvate]
Acta crystallographica. Section E