Fe III 48 ‐Containing 96‐Tungsto‐16‐Phosphate: Synthesis, Structure, Magnetism and Electrochemistry

The 48-FeIII-containing 96-tungsto-16-phosphate, [FeIII 48(OH)76(H2O)16(HP2W12O48)8]36@ (Fe48), has been ynthesized and structurally characterized. This polyanion comprises eight equivalent {FeIII 6P2W12} units that are linked in an end-on fashion forming a macrocyclic assembly that contains more iron centers than any other hlyoxometalate (POM) known to date. The novel Fe48 was synthesized by a simple one-pot reaction of an {Fe22} coordination complex with the hexalacunary {P2W12} POM precursor in water. The title polyanion was characterized by single-crystal XRD, FTIR, TGA, magnetic and electrochemical studies.