[1-(3-Aminopropyl)-4,7-dithia-1-azacyclononane-κ<sup>4</sup><i>N</i>,<i>N</i>′,<i>S,S</i>′]bis(dimethylformamide-κ<i>O</i>)nickel(II) bis(tetraphenylborate) acetonitrile disolvate
Acta crystallographica. Section E