title: Cs(2)K(UO)(2)Si(4)O(12): a mixed-valence uranium(IV,V) silicate.
abstract: The first mixed-valence uranium(IV,V) silicate is synthesized under high-temperature, high-pressure hydrothermal conditions. The structure contains chains of corner-sharing U(IV,V)O(6) octahedra which are interconnected by Si(4)O(12) four-membered rings to form a 3-D framework. XPS and XANES spectra were measured to identify the valence state of uranium.
authors.affiliation: Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan, ROC.
authors.forename: Cheng-Shiuan
authors.initials: CS
authors.lastname: Lee
authors.forename: Sue-Lein
authors.initials: SL
authors.lastname: Wang
authors.forename: Kwang-Hwa
authors.initials: KH
authors.lastname: Lii