Bis(1-methyl­piperidinium) tetra­chlorido­cuprate(II)

The structure of the title compound, (C(6)H(14)N)(2)[CuCl(4)], consists of two inequivalent 1-methyl­piperidinium cations and a flattened tetra­hedral [CuCl(4)](2−) anion. Each organic cation exhibits a chair conformation with the methyl group in the equatorial position. They are segregated into alternating layers parallel to (100) and stacked along [100]. The first cation is arranged in parallel stacks in a herringbone pattern with rows of [CuCl(4)](2−) anions fitting between the stacks and with a Cl(−) ion directed into the inter­ior of the layer. The second organic cation forms distorted hcp layers that separate the other organic cation/[CuCl(4)](2−) slabs. N—H⋯Cl hydrogen bonding between the cations and the anions consolidates the crystal packing.