The crystal structure of the salt (C10H10N2)[ZnCl4] features a bi-pyridine-diium dication that is non-planar, with a noticeable angle between its two rings.
In the structure, the distorted [ZnCl4](2-) anions are arranged in rods that run parallel to the [001] direction, while the organic cations form corrugated layers parallel to the (100) plane.
The connection between cations and anions is facilitated by N-H⋯Cl hydrogen bonds, which create chains in the [20-1] direction, along with additional C-H⋯Cl interactions that enhance overall stability of the crystal.