Abstract
The title compound, bis-[di-thio-bis-(formamidinium)] hexa-bromido-ruthenium dibromide trihydrate, [(NH(2))(2)CSSC(NH(2))(2)](2)[RuBr(6)]Br(2)·3H(2)O, crystallizes in the ortho-rhom-bic system, space group Cmcm, Z = 4. The [RuBr(6)](2-) anionic complex has an octa-hedral structure. The Ru-Br distances fall in the range 2.4779 (4)-2.4890 (4) Å. The S-S and C-S distances are 2.0282 (12) and 1.783 (2) Å, respectively. The H(2)O mol-ecules, Br(-) ions, and NH(2) groups of the cation are linked by hydrogen bonds. The conformation of the cation is consolidated by intra-molecular O-H⋯Br, O-H⋯O, N-H⋯Br and N-H⋯O hydrogen bonds. The [(NH(2))(2)CSSC(NH(2))(2)](2+) cations form a hydrogen-bonded system involving the Br (-) ions and the water mol-ecules. Two Br (-) anions form four hydrogen bonds, each with the NH(2) groups of two cations, thus linking the cations into a ring. The rings are connected by water mol-ecules, forming N-H⋯O-H⋯Br hydrogen bonds.