Synthesis and Characterization of Iron(III)-Substituted, Dimeric Polyoxotungstates, [Fe<sub>4</sub>(H<sub>2</sub>O)<sub>10</sub>(β-XW<sub>9</sub>O<sub>33</sub>)<sub>2</sub>]<i><sup>n</sup></i><sup>-</sup> (<i>n</i> = 6, X = As<sup>III</sup>, Sb<sup>III</sup>; <i>n</i> = 4, X = Se<sup>IV</sup>, Te<sup>IV</sup>)
Ulrich Kortz, Masha G. Savelieff, Bassem S. Bassil, et al.·2002·Inorganic Chemistry