High-nuclear polyoxovanadates assembled from pentagonal building blocks

The design and synthesis of high-nuclear polyoxometalates (POMs) constructed from pentagonal molecular building blocks (MBBs) are attractive and challenging. Herein, three new high-nuclear polyoxovanadates, including {V₂₀W₂P₂₀} (1), {V₁₈W₄P₁₄} (2), and {V₂₆W₆P₁₆} (3), have been successfully synthesized under solvothermal conditions. All these structures are assembled from pentagonal MBB {WV₅(PhPO₃)₅} with different configurations. Compound 1 exhibits efficient, stable, and versatile catalytic activity for sulfide oxidation.