Hervé- and Krebs-Type Magnetic Polyoxometalate Dimers

Lacunary polyoxometalates (POMs) are negatively charged metal–oxo clusters, formally obtained from plenary topologies via fragment removal. Owing to the removal, lacunary POMs archetypes rich in nucleophilic terminal oxo ligands, making them suitable for post-synthetic coordination with various heterometals. Trilacunary heteropolytungstates (hetero-POTs) based on bowl-shaped {W9O30} framework incorporating a central lone-pair containing {XO3} hetergroup (X = AsIII, SbIII, and BiIII) function as all-inorganic scaffolds that presence of d-block metal cations typically construct sandwich-like dimers Hervé and/or Krebs. Herein we review preparative approaches, well compositional magnetic versatility constructed Hervé- Krebs-type discuss prospective uses POMtronics.