1-(3,4-Dichloro-benz-yl)-3-methyl-quinolin-1-ium 7,7,8,8-tetra-cyano-quinodimethanide.

In the title salt, C(17)H(14)Cl(2)N(+)·C(12)H(4)N(4) (-), cations and anions stack along the a axis into segregated columns by π-π stacking inter-actions, with alternating centroid-centroid separations of 3.5957 (7) and 3.7525 (7) Šfor the cation column and 3.4252 (6) and 4.1578 (7) Šfor the anion column. In the cation, the dihedral angle between the benzene ring and the quinoline ring system is 76.35 (4)°. The crystal packing is stabilized by inter-columnar C-H⋯N hydrogen bonds.