Tetradecanuclear Iron(III)-Oxo Nanoclusters Stabilized by Trilacunary Heteropolyanions

Masooma Ibrahim; Ali Haider; Yixian Xiang; Bassem S Bassil; Akina M Carey; Lisa Rullik; Geoffrey B Jameson; Floriant Doungmene; Israël M Mbomekallé; Pedro de Oliveira; Valeriu Mereacre; George E Kostakis; Annie K Powell; Ulrich Kortz

doi:10.1021/acs.inorgchem.5b00124

Tetradecanuclear Iron(III)-Oxo Nanoclusters Stabilized by Trilacunary Heteropolyanions

Inorg Chem. 2015 Jul 6;54(13):6136-46. doi: 10.1021/acs.inorgchem.5b00124. Epub 2015 Jun 12.

Authors

Affiliations

¹ †Department of Life Sciences and Chemistry, Jacobs University, P.O. Box 750 561, 28725 Bremen, Germany.
² ‡Department of Chemistry, Faculty of Sciences, University of Balamand, P.O. Box 100, Tripoli, Lebanon.
³ #Institute of Fundamental Sciences, Massey University, Tennent Drive, Palmerston North 4442, New Zealand.
⁴ §Equipe d'Electrochimie et de Photoélectrochimie, Laboratoire de Chimie-Physique, Université Paris-Sud, UMR 8000 CNRS, Orsay F-91405, France.
⁵ ∥Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131 Karlsruhe, Germany.
⁶ △Department of Chemistry, School of Life Sciences, University of Sussex, Brighton BN1 9QJ, United Kingdom.
⁷ ⊥Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.

PMID: 26065318
DOI: 10.1021/acs.inorgchem.5b00124

Abstract

The tetrameric, multi-Fe(III)-containing polyoxotungstates [Fe14O6(OH)13(P2W15O56)4](31-) (1) and [Na2Fe14(OH)12(PO4)4(A-α-XW9O34)4](20-) (X = Si(IV) (2), Ge(IV) (3)) have been successfully synthesized under conventional reaction conditions in aqueous, slightly acidic (1), or basic (2 and 3) media. Polyanions 1-3 were characterized in the solid state by single-crystal X-ray diffraction, IR spectroscopy, thermogravimetric analysis, and magnetic studies, and in solution by electrochemistry.