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. U24Fe24contains 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 C2P2groups into a cage cluster. Crystals of U24Fe24present a paramagnetic-like behavior. X-ray scattering showed that U24Fe24forms in the reactant solution prior to crystallization and is stable upon dissolution in water.
Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame , Notre Dame, Indiana 46556, United States.
Jie
http://orcid.org/0000-0001-7131-4881
J
Qiu
Department of Physics, University of Notre Dame , Notre Dame, Indiana 46556, United States.
Sining
S
Dong
Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame , Notre Dame, Indiana 46556, United States.
Jennifer E S
JE
Szymanowski
Department of Physics, University of Notre Dame , Notre Dame, Indiana 46556, United States.
Malgorzata
M
Dobrowolska
Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame , Notre Dame, Indiana 46556, United States.|Department of Chemistry and Biochemistry, University of Notre Dame , Notre Dame, Indiana 46556, United States.
Peter C
http://orcid.org/0000-0002-2319-9628
PC
Burns