Two New Isopolyoxotungstates(VI) with the Empirical Composition Cs2W2O7⋅2 H2O and Na2W2O7⋅H2O: An Icosatetratungstate and a Polymeric Compound

Abstract

The largest isopolyoxotunstate ion known to date, W₂₄ O₈₄^24- (structure shown in the picture), isolated as the cesium salt, and a chainlike polyoxotungstate ion made up of planar W₄ O₁₆ units, isolated as the sodium salt, hide behind the simple empirical formulas of the title compounds.