Piperazine-1,4-diium bis­[tetra­chlorido­aurate(III)] dihydrate

In the title compound, (C4H12N2)[AuCl4]2·2H2O, the AuIII atom has a square-planar geometry. The piperazinium dication lies on an inversion centre and adopts a typical chair conformation. In the crystal, a combination of N—H⋯O, N—H⋯Cl and O—H⋯Cl hydrogen bonds results in the formation of a three-dimensional network