Dineodymium di­hydrogen α‐hexa­molyb­do­platinate(IV) tetra­deca­hy­drate,Nd2[H2α‐PtMo6O24]·14H2O

The least protonated hexamolybdoplatinate(IV) polyanion, H₂α‐PtMo₆O₂₄]^6?, is isolated by using Nd³⁺ as a counter‐cation. Two O atoms of the central PtO₆ octahedron are protonated. The Mo—Mo distances are 3.244 (2), 3.295 (2) and 3.393 (1) Å, and the Pt—Mo distances are 3.251 (1), 3.332 (2) and 3.338 (1) Å. The anion has the Pt atom on an inversion centre and has close to m symmetry, with Pt—O bond lengths in the range 2.002 (8)–2.015 (8) Å and Mo—O bond lengths in the ranges 1.689 (9)–1.747 (8), 1.890 (8)–2.037 (8) and 2.109 (8)–2.384 (8) Å.