Bis(3-methyl-pyridinium) tetra-(chlorido/bromido)cuprate(II).

The structure of the title salt, (C6H8N)2[CuCl3.4Br0.6], consists of two 3-methyl­pyridinium cations and a distorted tetra­hedral [CuCl3.4Br0.6]2− dianion. Substitutional disorder with Br is exhibited for three of the Cl atoms of the anion, giving a mixed chloride/bromide cuprate(II) anion. In the crystal, inter­molecular N—H⋯Cl hydrogen bonds link two cations to one anion, forming a three-ion aggregate. These are connected into a supra­molecular chain along the b axis via π–π inter­actions between the pyridinium rings [centroid–centroid distance = 3.743 (3) A].