Crystal structure of an unknown solvate of {2,2′-[ethane-1,2-diylbis(nitrilomethanylylidene)]diphenolato-κ<sup>4</sup><i>O</i>,<i>N</i>,<i>N</i>′,<i>O</i>′}(<i>N</i>-ferrocenylisonicotinamide-κ<i>N</i><sup>1</sup>)cobalt(II): a Co<sup>II</sup>–salen complex that forms hydrogen-bonded dimers
Acta crystallographica. Section E, Crystallographic communications