Homometallic UO_2~(2+) diphosphonates assembled under ambient and hydrothermal conditions

Knope K.E.; Cahill C.L.

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Homometallic UO_2~(2+) diphosphonates assembled under ambient and hydrothermal conditions

机译：在室温和水热条件下组装的均金属UO_2〜（2+）二膦酸酯

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Four uranyl methylenediphosphonates have been synthesized from reactions of uranyl nitrate and methylenediphosphonate in water. Three of the compounds, (1) (UO_2)[CH_2(PO_3H)_2](H _2O)·2H_2O, (2) (UO_2)[CH _2(PO_3H)_2](H_2O)·4H _2O, and (3) (UO_2)[O_3PCH_2PO _3H](H_2O)·3H_2O·NH_4, have been synthesized under ambient conditions whereas compound 4, (UO _2)[CH_2(PO_3H)_2](H_2O) ·H_2O, was prepared hydrothermally. Each compound is built from the UO_2~(2+) cation coordinated to one water molecule and four oxygen atoms from three diphosphonate ligands to form pentagonal bipyramid geometry. Despite these similarities however, compounds 1-4 exhibit remarkable structural diversity with 1 and 2 forming 1-D structural units, compound 3 adopting 2-D sheets, and compound 4 exhibiting a 3-D structure. Such differences are attributed to variations in the preparation of the materials (reaction temperature and presence of counterions) as well differences in hydration and/or the position of the bound water molecules in each of the structures. The thermal and fluorescent behaviors of the compounds are also presented.

机译：由硝酸铀酰和亚甲基二膦酸酯在水中的反应合成了四种亚甲基二膦酸铀酯。其中三个化合物（1）（UO_2）[CH_2（PO_3H）_2]（H _2O）·2H_2O，（2）（UO_2）[CH _2（PO_3H）_2]（H_2O）·4H _2O和（3）（UO_2）[O_3PCH_2PO_3H]（H_2O）·3H_2O·NH_4是在环境条件下合成的，而化合物4（UO_2）[CH_2（PO_3H）_2]（H_2O）·H_2O是水热制备的。每种化合物均由与一个水分子配位的UO_2〜（2+）阳离子和来自三个二膦酸酯配体的四个氧原子构成，以形成五角双锥几何形状。尽管有这些相似之处，但化合物1-4仍表现出显着的结构多样性，其中1和2形成1-D结构单元，化合物3采用2-D薄片，化合物4呈现3-D结构。这种差异归因于材料制备的变化（反应温度和抗衡离子的存在）以及每个结构中水合和/或结合水分子的位置的差异。还介绍了化合物的热行为和荧光行为。

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《Dalton transactions: An international journal of inorganic chemistry》 |2010年第35期|共6页
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Knope K.E.; Cahill C.L.;
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1. Homometallic UO_2~(2+) diphosphonates assembled under ambient and hydrothermal conditions [J] . Knope K.E., Cahill C.L. Dalton transactions: An international journal of inorganic chemistry . 2010,第35期

机译：在室温和水热条件下组装的均金属UO_2〜（2+）二膦酸酯
2. AUV-VISIBLE SPECTROSCOPIC STUDY OF THE URANYL UO_2~(2+)ION UNDER STRONGLY ACIDIC CONDITIONS:EVIDENCE FOR PROTONATION OF UO_2~(2+) [J] . Xiaoping Sun, Clayton Samples Journal of Undergraduate Chemistry Research . 2006,第1期

机译：强酸条件下铀酰UO_2〜（2+）离子的可见光光谱研究：UO_2〜（2+）质子化的证据
3. Behaviour of the uranyl (UO_2~(2+)) ion in different strongly acidic media: characterisation of UO_2~(2+) in common acids by electronic absorption spectroscopy [J] . Xiaoping Sun, Clayton Samples, Kristopher Daia, Journal of chemical research: reviews and research papers from all branches of chemistry . 2009,第6期

机译：铀酰（UO_2〜（2+））在不同强酸性介质中的行为：电子吸收光谱法表征普通酸中的UO_2〜（2+）
4. Selective hydrothermal growth of MnCh nanostructures using laser under ambient conditions [C] . Suwon Hwang, Heejung Kong, Tae Seung Hwang, Conference on Quantum Dots, Nanostructures, and Quantum Materials: Growth, Characterization, and Modeling . 2020

机译：在环境条件下使用激光选择性水热生长MnCh纳米结构
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Homometallic UO_2~(2+) diphosphonates assembled under ambient and hydrothermal conditions

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