Two New Isopolyoxotungstates(VI) with the Empirical Composition Cs W O ⋅2 H O and Na W O ⋅H O: An Icosatetratungstate and a Polymeric Compound.

The largest isopolyoxotunstate ion known to date, W O (structure shown in the picture), isolated as the cesium salt, and a chainlike polyoxotungstate ion made up of planar W O units, isolated as the sodium salt, hide behind the simple empirical formulas of the title compounds.