Bis(3-methylpyridinium) tetra(chlorido/bromido)cuprate(II)

Abstract

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) Å].