Monoammonium Bis(D-penicillaminato-S)aurate(I) 3.667-Hydrate

The anion of the title compound (NH₄)[Au(C₅H₁₀NO₂S)₂].3.667H₂O, has roughly linear coordination of the Au atom to the S atoms of the ligands [Au—S 2.2900 (13) Å, S—Au—S 178.47 (7)°]. The C—S...S—C torsion angle is 29.3 (2)°. The packing arrangement is determined by short Au...Au contacts [3.221 (1) Å] as well as hydrogen-bonding interactions between ligand carboxylate and amine functional groups, the ammonium countercation and water molecules of hydration. Bond lengths and angles are normal.

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