[(CH<sub>3</sub>)<sub>4</sub>N][(C<sub>5</sub>H<sub>5</sub>NH)<sub>0.8</sub>((CH<sub>3</sub>)<sub>3</sub>NH)<sub>0.2</sub>]U<sub>2</sub>Si<sub>9</sub>O<sub>23</sub>F<sub>4</sub> (USH-8): An Organically Templated Open-Framework Uranium Silicate
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资源简介：
The open-framework uranium fluorosilicate [(CH3)4N][(C5H5NH)0.8((CH3)3NH)0.2]U2Si9O23F4 (USH-8) has been synthesized hydrothermally by using tetramethylammonium hydroxide and pyridine−HF. The compound has a framework composition U2Si9O23F4 based on silicate double layers that are linked by chains of UO3F4 pentagonal bipyramids. The framework has 12-ring channels along [010] and 7-ring channels along [100]. The [010] 12-ring channels have a calabash-shape with the middle part partially blocked by the uranyl oxygen atoms. The narrow side of the 12-ring channels is occupied by well-ordered TMA cations while the wide side is occupied by disordered pyridinium and trimethylammonium cations.
创建时间：
2016-08-18
