Bis(1-ethyl-4,4′-bipyridin-1-ium) bis­(1,2-di­cyano­ethene-1,2-di­thiol­ato-κ²S,S′)nickelate(II)

In the anion of the title compound, (C₁₂H₁₃N₂)[Ni(C₄N₂S₂)₂], the Ni^II atom is coordinated by four S atoms from two 1,2-di­cyano­ethene-1,2-di­thiol­ate (mnt) ligands in a suqare-planar geometry. Weak C—H...N and C—H...S hydrogen bonds between the 1-ethyl-4,4′-bipyridin-1-ium cations and mnt anions and weak π–π inter­actions between the pyridine rings of the cations [centroid–centroid distances = 3.808 (3) and 3.972 (3) Å] lead to a two-dimensional network parallel to (010).

1-(2,6-Diiso­propyl­phen­yl)-1H-benzimidazole

In the title compound, C₁₉H₂₂N₂, both the benzimidazole unit and the 2,6-diiso­propyl­phenyl group are essentially planar [maximum deviations from the least-squares planes of 0.005 (1) and 0.009 (1) Å, respectively]. The dihedral angle between the two planes is 79.6 (7)°. In the crystal, mol­ecules are linked into chains along the a-axis direction by weak C—H...N inter­actions. The crystal structure also features C—H...π inter­actions, which link the chains into a three-dimensional network.