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New Path for Polyoxometalates: Controlled Synthesis and Characterization of Metal-Substituted Tungstosulfates

What is the most significant result of this study? Development of systematic synthetic procedures for metal-substituted tungstosulfates. Many metal-substituted tungstophosphates and tungstosilicates have been prepared, characterized, and applied to various fields (especially catalysis for water oxidation) because the lacunary species, which have defect parts in the polyoxometalate (POM) framework, can be prepared systematically from the parent POMs or reaction mixtures by a sophisticated pH control. We have synthesized the lacunary tungstosulfates [(S2W14O54)3], which can be reacted with any transition metal ion to form the corresponding metal-substituted tungstosulfates. This finding would advance the chemistry of POMs.