Crystal structure and Hirshfeld surface analysis of bis­(2,6-di­amino­pyridinium) tetra­chlorido­cobaltate(II)

In the title mol­ecular salt, (C(5)H(8)N(3))(2)[CoCl(4)], the cations are protonated at their pyridine N atoms and the anion is an almost regular tetra­hedron. The crystal structure consists of alternating inorganic layers, built from tetra­chlorido­cobaltate anions, and organic layers formed by protonated cations of 2,6-di­amino­pyridinium. The crystal packing is governed by C/N—H⋯Cl hydrogen-bonding inter­actions between the organic and the inorganic ions and Cl⋯Cl inter­actions. Moreover, the cations show a π–π stacking inter­action [inter­centroid distance = 3.763 (2) Å]. The prevalence of these inter­actions is illustrated by an analysis of the three-dimensional Hirshfeld surface and by two-dimensional fingerprint plots.