inorganic compounds
The title compound {octacaesium silicodecatungstate nonahydrate, Cs8[SiW10O36].9H2O, is the first caesium salt with a heteropolyoxometalate anion γ-[SiW10O36]8−. The stability of the well known heteropolyanion depends on the size of the alkaline cations. The polyanions are connected into infinite columns by Cs cations.