[Hg5O2(OH)4][(UO2)2(AsO4)2]: A complex mercury(II) uranyl arsenate
作者： Yaqin Yu , Kai Jiang , Thomas E. Albrecht-Schmitt
DOI: 10.1016/J.JSSC.2009.03.032
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摘要: Abstract Under mild hydrothermal conditions UO2(NO3)2·6H2O, Hg2(NO3)2·2H2O, and Na2HAsO4·7H2O react to form [Hg5O2(OH)4][(UO2)2(AsO4)2] (HgUAs-1). Single crystal X-ray diffraction experiments reveal that HgUAs-1 possesses a pseudo-layered structure consisting of two types layers: ∞ 2 [ Hg 5 O ( OH ) 4 ] + UO AsO - . The layers are complex, contain three crystallographically unique centers. coordination environments bond–valence sum calculations indicate the centers divalent. belong Johannite topological family. linked each other through μ2-O bridges include Hg⋯O=U=O interactions.
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