Hepta-Zr-Incorporated Polyoxometalate Assembly.

Driven by the synergistic-directing effect of the lacunary fragments, [B-α-GeWO] and [B-α-GeWO], an unprecedented hepta-Zr-substituted polyoxometalate (POM) assembly KNaH(Hpy)[SbZrO(OH)(B-α-GeWO)(B-α-GeWO)]·28HO () was made under hydrothermal condition and structurally characterized. Of which, a unique hepta-Zr cluster, [SbZrO(OH)] core, was built by two trilacunary [B-α-GeWO] fragments and two monolacunary [B-α-GeWO] fragments and further arranged in a mode of a vertical cross and formed a pseudo-tetrahedron geometry. Compound features the first Zr-cluster-substituted POM. Moreover, is an effective heterogeneous catalyst for the catalytic oxidation of sulfides into the corresponding sulfones with HO, manifesting distinguished conversion, excellent yield, and desired recyclability.