Crystal structure and Hirshfeld surface analysis of bis­(6,7,8,9-tetra­hydro-11H-pyrido[2,1-b]quinazolin-5-ium) tetra­chlorido­zincate

The title compound, (C(12)H(15)N(2))(2)[ZnCl(4)], is a salt with two symmetrically independent, essentially planar heterocyclic cations and a slightly distorted tetra­hedral chloro­zincate dianion. N—H⋯Cl hydrogen bonds link these ionic constituents into a discrete aggregate, which comprises one formula unit. The effect of hydrogen bonding is reflected in the minor distortions of the [ZnCl(4)](2−) moiety: distances between the cation and chlorido ligands engaged in classical hydrogen bonds are significantly longer than the others. Secondary inter­actions comprise C—H⋯π hydrogen bonding and weak π–π stacking. A Hirshfeld surface analysis indicates that the most abundant contacts in packing stem from H⋯H (47.8%) and Cl⋯H/H⋯Cl (29.3%) inter­actions.