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Cs<sub>8</sub>U<sup>IV</sup>(U<sup>VI</sup>O<sub>2</sub>)<sub>3</sub>(Ge<sub>3</sub>O<sub>9</sub>)<sub>3</sub>·3H<sub>2</sub>O: A Mixed-Valence Uranium Germanate with 9-Ring Channels
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2011
Year
Materials ScienceInorganic ChemistryEngineeringPhysicsMixed-valence UraniumDiscrete UNatural SciencesMixed-valence Uranium GermanateMain Group ChemistryChemistryInorganic MaterialCrystallographyHigh-pressure Hydrothermal ConditionsInorganic SynthesisInorganic Compound
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.
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