K<sub>3</sub>(U<sub>3</sub>O<sub>6</sub>)(Si<sub>2</sub>O<sub>7</sub>) and Rb<sub>3</sub>(U<sub>3</sub>O<sub>6</sub>)(Ge<sub>2</sub>O<sub>7</sub>): A Pentavalent-Uranium Silicate and Germanate
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资源简介：
A new uranium(V) silicate, K3(U3O6)(Si2O7), and the germanate analogue, Rb3(U3O6)(Ge2O7), have been synthesized under high-temperature, high-pressure hydrothermal conditions and characterized by single-crystal X-ray diffraction. Their structures contain uranate columns formed of triple octahedral chains of the α-UF5 type linked by disilicate (or digermanate) units to form a 3-D framework structure. The valence state of uranium is confirmed by X-ray photoelectron spectroscopy, X-ray absorption spectroscopy, and magnetic susceptibility.
创建时间：
2016-02-27
