Structure cristalline d'un dihydrogeno-sulphato-iodate de potassium

The iodato-sulfate K₄H₂(S₂I₂O₁₄) is monoclinic, $\text{P2}{}_1\text{n}$ with a unit cell: a = 13.84(1) Å, b = 7.173(5) Å, c = 7.443(5) Å, β = 93.16(1)°, and Z = 2. The crystal structure of this salt has been solved using 1956 independent reflections, with a final R value of 0.03. The main feature of this salt is the existence of a finite new heteropolyanion: (I₂S₂O₁₄)^?6.