<i>catena</i>-Poly[[(benzil bis{[(pyridin-2-yl)methylidene]hydrazone}-κ<sup>4</sup><i>N</i>,<i>N</i>′,<i>N</i>′′,<i>N</i>′′′)mercury(II)]-μ-chlorido-[dichloridomercury(II)]-μ-chlorido]
Acta crystallographica. Section E