Uranium diphosphonates templated by interlayer organic amines
Uranium diphosphonates templated by interlayer organic amines
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DOI：
10.1016/j.jssc.2012.10.008
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发表时间：
2013-02
影响因子：
3.3
通讯作者：
Anna-Gay D. Nelson;Anna-Gay D. Nelson;E. Alekseev;E. Alekseev;T. Albrecht‐Schmitt;R. Ewing
中科院分区：
文献类型：
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作者：
Anna-Gay D. Nelson;Anna-Gay D. Nelson;E. Alekseev;E. Alekseev;T. Albrecht‐Schmitt;R. Ewing
三氧化铀和亚甲基二膦酸与多种胺（2,2-二吡啶、三亚乙基二胺、乙二胺和1,10-菲咯啉）在200°C下进行水热处理，导致一系列层状二膦酸铀化合物结晶，[C10H9N2]{UO2(H2O)[CH2(PO3)(PO3H)]} (Ubip2)、[C6H14N2]{(UO2)2[CH2(PO3)(PO3H)]2·2H2O}(UDAB)、[C2H10N2]2{(UO2)2(H2O)2[CH2(PO3)2]2·0.5H2O}(U乙基)，和[C12H9N2]{UO2(H2O)[CH2(PO3)(PO3H)]}（Uphen）。该化合物的晶体结构基于由亚甲基二膦酸酯分子连接的UO7单元，在Ubip2和UDAB中形成二维阴离子片，在U乙基和Uphen中形成一维阴离子链，通过质子化胺分子实现电荷平衡。胺分子与膦酸氧和水分子的相互作用导致中间层中形成广泛的氢键。这些胺分子在形成每个结构的不同配位几何形状和拓扑时，既充当阴离子磷酸铀片和链的结构导向剂和电荷平衡阳离子。本文报道了合成化合物的合成、结构和光谱表征。
The hydrothermal treatment of uranium trioxide and methylenediphosphonic acid with a variety of amines (2,2-dipyridyl, triethylenediamine, ethylenediamine, and 1,10-phenanthroline) at 200°C results in the crystallization of a series of layered uranium diphosphonate compounds, [C10H9N2]{UO2(H2O)[CH2(PO3)(PO3H)]} (Ubip2), [C6H14N2]{(UO2)2[CH2(PO3)(PO3H)]2·2H2O} (UDAB), [C2H10N2]2{(UO2)2(H2O)2[CH2(PO3)2]2·0.5H2O} (Uethyl), and [C12H9N2]{UO2(H2O)[CH2(PO3)(PO3H)]} (Uphen). The crystal structures of the compounds are based on UO7units linked by methylenediphosphonate molecules to form two-dimensional anionic sheets in Ubip2 and UDAB, and one-dimensional anionic chains in Uethyl and Uphen, which are charge balanced by protonated amine molecules. Interaction of the amine molecules with phosphonate oxygens and water molecules results in extensive hydrogen bonding in the interlayer. These amine molecules serve both as structure-directing agents and charge-balancing cations for the anionic uranium phosphonate sheets and chains in the formation of the different coordination geometries and topologies of each structure. Reported herein are the syntheses, structural and spectroscopic characterization of the synthesized compounds.