10.1021/acs.inorgchem.5b00124.s004 Masooma Ibrahim Masooma Ibrahim Ali Haider Ali Haider Yixian Xiang Yixian Xiang Bassem S. Bassil Bassem S. Bassil Akina M. Carey Akina M. Carey Lisa Rullik Lisa Rullik Geoffrey B. Jameson Geoffrey B. Jameson Floriant Doungmene Floriant Doungmene Israël M. Mbomekallé Israël M. Mbomekallé Pedro de Oliveira Pedro de Oliveira Valeriu Mereacre Valeriu Mereacre George E. Kostakis George E. Kostakis Annie K. Powell Annie K. Powell Ulrich Kortz Ulrich Kortz Tetradecanuclear Iron(III)-Oxo Nanoclusters Stabilized by Trilacunary Heteropolyanions American Chemical Society 2015 thermogravimetric analysis reaction conditions IR spectroscopy Tetradecanuclear Trilacunary HeteropolyanionsThe tetrameric Na 2Fe Polyanion acidic media SiIV Stabilized 14O electrochemistry Nanocluster diffraction solution GeIV polyoxotungstate 2015-07-06 00:00:00 Dataset https://acs.figshare.com/articles/dataset/Tetradecanuclear_Iron_III_Oxo_Nanoclusters_Stabilized_by_Trilacunary_Heteropolyanions/2152423 The tetrameric, multi-Fe<sup>III</sup>-containing polyoxotungstates [Fe<sub>14</sub>O<sub>6</sub>(OH)<sub>13</sub>­(P<sub>2</sub>W<sub>15</sub>O<sub>56</sub>)<sub>4</sub>]<sup>31–</sup> (<b>1</b>) and [Na<sub>2</sub>Fe<sub>14</sub>(OH)<sub>12</sub>­(PO<sub>4</sub>)<sub>4</sub>(<i>A</i>-α-XW<sub>9</sub>O<sub>34</sub>)<sub>4</sub>]<sup>20–</sup> (X = Si<sup>IV</sup> (<b>2</b>), Ge<sup>IV</sup> (<b>3</b>)) have been successfully synthesized under conventional reaction conditions in aqueous, slightly acidic (<b>1</b>), or basic (<b>2</b> and <b>3</b>) media. Polyanions <b>1-3</b> were characterized in the solid state by single-crystal X-ray diffraction, IR spectroscopy, thermogravimetric analysis, and magnetic studies, and in solution by electrochemistry.