(IUCr) Crystallography Journals Online

Acta Cryst. (2006). E62, i241-i243 [ doi:10.1107/S1600536806046125 ]

Dipotassium hexahydrogen hexamolybdoplatinate(IV) hexahydrate

U. Lee and H.-C. Joo

Abstract: The title compound, K₂[H₆PtMo₆O₂₄]·6H₂O, containing the hexamolybdoplatinate(IV) polyanion with the highest level of protonation, was isolated at pH 1.60. The anion has the Pt atom at an inversion center and exhibits a local symmetry close to $\\overline{3}$ m. Four O atoms of the central PtO₆ octahedron and two O atoms of the edge-shared MoO₆ octahedron are protonated. One K⁺ ion and one O atom of a water molecule are located on twofold axes; the positions of a second K⁺ ion and one water molecule, both on general sites, are half-occupied.

Online 8 November 2006