Uranyl-Peroxide Clusters Incorporating Iron Trimers and Bridging by Bisphosphonate- and Carboxylate-Containing Ligands

A hybrid uranium–iron cage nanocluster, [(UO2)24(FeOH)24(O2)24(PO4)8(CH­(COO)­(PO3)2)24]96– (U24Fe24), was synthesized using bridging ligands containing bisphosphonate and carboxylate groups. U24Fe24 contains six tetramers of uranyl hexagonal bipyramids and eight iron trimers, each of which consists...

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Bibliographic Details
Published in:Inorganic chemistry 2017-04, Vol.56 (7), p.3738-3741
Main Authors: Qiu, Jie, Dong, Sining, Szymanowski, Jennifer E. S, Dobrowolska, Malgorzata, Burns, Peter C
Format: Article
Language:English
Subjects:
Chemistry
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Summary:A hybrid uranium–iron cage nanocluster, [(UO2)24(FeOH)24(O2)24(PO4)8(CH­(COO)­(PO3)2)24]96– (U24Fe24), was synthesized using bridging ligands containing bisphosphonate and carboxylate groups. U24Fe24 contains six tetramers of uranyl hexagonal bipyramids and eight iron trimers, each of which consists of three corner-sharing Fe3+ octahedra and is stabilized by in situ formed phosphate and 2,2-bis­(phosphonato)­acetate (C2P2) groups. Tetramers and trimers are bridged by 24 C2P2 groups into a cage cluster. Crystals of U24Fe24 present a paramagnetic-like behavior. X-ray scattering showed that U24Fe24 forms in the reactant solution prior to crystallization and is stable upon dissolution in water.
ISSN:0020-1669
1520-510X
DOI:10.1021/acs.inorgchem.7b00389