title: Cs8U(IV)(U(VI)O2)3(Ge3O9)3·3H2O: a mixed-valence uranium germanate with 9-ring channels.
abstract: A mixed-valence uranium(IV,VI) germanate has been synthesized under high-temperature, high-pressure hydrothermal conditions. The structure contains discrete U(IV)O(6) octahedra and U(VI)O(6) tetragonal bipyramids, which are connected by three-membered single-ring Ge(3)O(9)(6-) anions to form a three-dimensional framework with 9-ring channels. The U 4f X-ray photoelectron spectroscopy spectrum was measured to identify the valence states of the uranium.
authors.affiliation: Department of Chemistry, National Central University, Jhongli, Taiwan 320, Republic of China.
authors.forename: Quang Bac
authors.initials: QB
authors.lastname: Nguyen
authors.forename: Hsin-Kuan
authors.initials: HK
authors.lastname: Liu
authors.forename: Wen-Jung
authors.initials: WJ
authors.lastname: Chang
authors.forename: Kwang-Hwa
authors.initials: KH
authors.lastname: Lii