Bis{2-[4-(methyl-sulfan-yl)phen-yl]-1H-benzimidazol-3-ium} tetra-bromido-cuprate(II) dihydrate.

The asymmetric unit of the title compound, (C14H13N2S)2[CuBr4]·2H2O, contains two cations, one anion and two solvent water mol­ecules that are connected via O—H⋯Br, N—H⋯Br and N—H⋯O hydrogen bonds into a two-dimensional polymeric structure. The cations are arranged in a head-to-tail fashion and form stacks along [100]. The central CuII atom of the anion is in a distorted tetra­hedral environment.