Bis[1-benzyl-4-(dimethylamino)pyridinium] bis(2,2-dicyanoethylene-1,1-dithiolato-κ2 S, S′)nickelate(II). - Chu-Wen Feng; Xiang-Rong Li; Yong Hou; Chun-Lin Ni (Acta Crystallographica: Section E, 2007)