Inorganic Chemistry, Vol.54, No.11, 5495-5503, 2015
Synthesis of the Layered Quaternary Uranium-Containing Oxide Cs2Mn3U6O22 and Characterization of its Magnetic Properties
A layered quaternary uranium-containing oxide, Cs2Mn3U6O22, was crystallized from a cesium chloride flux. The crystal structure was determined to consist of alpha-U3O8 topological layers that are separated by alternating cesium and manganese layers. This ordered arrangement creates a separation between manganese layers of 13 angstrom, leading to complex low-dimensional magnetic properties. The compound crystallizes in a new structure type in the monoclinic space group, C2/m, with a = 6.8780(10) angstrom, b = 11.7717(17) angstrom, c = 13.374(2) angstrom, and beta = 99.673(5)degrees. The magnetic properties were measured and analyzed by first-principles density functional theory calculations.