Tetra­aqua­bis­(thio­urea-κS)cadmium(II) triaqua­tris(thio­urea-κS)cadmium(II) disulfate

The title compound, [Cd(CH₄N₂S)₂(H₂O)₄][Cd(CH₄N₂S)₃(H₂O)₃](SO₄)₂, contains two mol­ecules of each of the Cd complexes and four sulfate ions in the asymmetric unit: all the Cd atoms exhibit distorted octa­hedral geometries. The Cd—S and Cd—O bond lengths around the Cd atoms in the bis­(thio­urea) cations are in the ranges 2.580 (4)–2.599 (4) and 2.323 (8)–2.421 (9) Å, respectively, and the S atoms are in a cis orientation. In the tris­(thio­urea) cations, the corresponding bond lengths around the Cd atoms are slightly longer and are in the ranges 2.559 (4)–2.706 (3) and 2.303 (7)–2.480 (10) Å, respectively, and the S atoms are in a fac disposition. The crystal structure features numerous N—H...O, N—H...N, O—H...O and O—H...N hydrogen bonds. Two O atoms of a sulfate anion were found to be disordered over two orientations in a 0.620 (9):0.380 (9) ratio. The crystal studied was a racemic twin with BASF = 0.17 (5)