dioxouranium(V) | 21294-41-7

• 分子结构分类: 无机化合物 - 混合金属/非金属化合物 - 各种混合金属/非金属
• 英文名称: dioxouranium(V)
• 英文别名: uranyl(1+)；uranyl(V)
• CAS: 21294-41-7
• 化学式: O₂U
• 分子量: 270.028
• InChiKey: AXQFOSFQUUEWOE-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.24
• 重原子数：
  3.0
• 可旋转键数：
  0.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  34.14
• 氢给体数：
  0.0
• 氢受体数：
  2.0

反应信息

• 作为反应物：
  描述：

  dioxouranium(V) 、 dichlorine radical anion 以 水 为溶剂， 生成 uranyl
  参考文献：
  名称：

  Lierse, Christoph; Sullivan, James C.; Schmidt, Klaus H., Inorganic Chemistry, 1987, vol. 26, # 9, p. 1408 - 1410

  摘要：

  DOI：
• 作为产物：
  描述：

  uranyl 以 水 为溶剂， 生成 dioxouranium(V)
  参考文献：
  名称：

  二氧呋喃鎓（VI）及其水解产物以及原位电生成的二氧呋喃鎓（V）的红外光谱研究

  摘要：

  二氧呋喃鎓（VI）（pH范围为0至4）的水溶液在954和938 cm -1处产生能带，这归因于UO 2 2+和（UO 2）2（OH ）的v 3（MO 2）拉伸模式）分别为2 2+个阳离子。在916厘米的肩-1分配给v 3（MO 2）的高核水解二氧杂蒽（VI）物种的模式。使用薄层反射吸收池的红外光谱电化学研究促进了还原二氧铀（VI）水溶液以产生二氧铀（V）的研究，该二氧铀可进一步还原为铀（IV）。通过跟踪在914 cm -1处谱带强度的增加来监测二氧铀（V）的电生成，该谱带在-0.2至-0.8 V的电势下存在于光谱中。二氧铀（V）物种的主要形式为UO 2 +可以在溶液中或掺入不溶相的铀氧化物中，该氧化物沉积在工作电极上。在U V O键长度估计为1.76埃，0.03埃比U更长VI O键在水溶液中。能够达到的UO 2 +的最大浓度高度依赖于pH，并且在pH 3.4时最佳。在还原过程中，可以通

  DOI：

  10.1016/s0020-1693(00)82021-6

文献信息

• Chemielectron spectroscopy: A study of the gas-phase reactions of uranium with O2 and N2O
  作者：J.M. Dyke、A.M. Ellis、M. Fehér、A. Morris

  DOI：10.1016/0009-2614(88)80170-2

  日期：1988.3

  The gas-phase chemiionization reactions of uranium with oxygen and uranium with nitrous oxide have been studied using electron spectroscopy. Both reactions show one band in the electron spectrum. These bands have different maxima and shapes which are rationalised using schematic potential energy surfaces.

  使用电子光谱研究了铀与氧气的气相化学电离反应和铀与一氧化二氮的气相化学电离反应。这两个反应在电子光谱中均显示一个带。这些谱带具有不同的最大值和形状，可以使用示意性势能面对其进行合理化处理。
• Associative ionisation of laser-excited uranium with molecular oxygen
  作者：G.K. Bhowmick、R. Talukdar、P.N. Bajaj、V.B. Kartha、P.K. Chakraborti

  DOI：10.1016/0009-2614(88)87138-0

  日期：1988.3

  Associative ionisation of resonantly excited (5L60 to 7M7) atomic uranium with molecular oxygen has been investigated in a crossed beam configuration. The laser-enhanced associative ionisation cross section (5×10−14 cm2) for the formation of UO2+ ions has been found to be three orders of magnitude higher as compared to the ground state atom reaction cross section.

  已经在交叉电子束配置中研究了共振激发的（5 L 6 0至7 M 7）铀与分子氧的缔合电离。已经发现，用于形成UO 2 +离子的激光增强缔合电离截面（5×10 -14 cm 2）比基态原子反应截面高三个数量级。
• Vorobei, M. P.; Bevz, A. S.; Skiba, O. V., Russian Journal of Inorganic Chemistry, 1978, vol. 23, p. 890 - 893
  作者：Vorobei, M. P.、Bevz, A. S.、Skiba, O. V.

  DOI：——

  日期：——
• Uranyl-catalyzed chemiluminescent reaction of U4+ oxidation by dioxygen in aqueous HClO4 solution
  作者：S. V. Lotnik、L. A. Khamidullina、V. P. Kazakov

  DOI：10.1007/bf02495151

  日期：2000.9

  Chemiluminescence (CL) accompanying the reaction of U4+ with O-2 in 0.0004-0.1 M HClO4 was studied. It was found that the electron-excited uranyl ion (UO22+)* is the CL emitter. The fact that the reaction rate and the CL yield increase as the solution acidity decreases was explained by different reactivities of the U-aq(4+) aquaion and the products of its stepwise hydrolysis, UOH3+ and U(OH)(2)(2+), toward O-2. Based on the results of analysis of the chain-radical mechanism of the reaction between U4+ and O-2, it was concluded that transfer of an electron from the UO2+ ion to the oxidizing agent (a (OH)-O-. radical) is the most plausible elementary step of the reaction Of (UO(2)2+)* formation. It was found that the reaction rate, as well as the CL yield, increase substantially in the presence of uranyl ion. Catalytic action of UO22+ was explained by the formation of a UO22+. UO2+ complex, which reduces the rate of the UO2+ disproportionation reaction (UO2+ is an intermediate of the reaction and is involved in chain propagation), and by regeneration of the active center, UO2+, in the reaction of UO22+ with U4+.
• Reactivity of platinum nanoaggregates in catalytic reduction of U(VI) with hydrazine in acid solutions
  作者：M. Yu. Boltoeva、V. P. Shilov、A. V. Anan’ev

  DOI：10.1134/s1066362207060112

  日期：2007.12

  Catalysts Pt/SiO2 with different size of Pt nanoaggregates were studied in catalytic reduction of U(VI) with hydrazine in solutions of H2SO4, HClO4, and HNO3. The catalytic activity of the surface Pt atoms of Pt/SiO2 in this reaction monotonically increases with an increase in the size of metal crystallites on the support, i.e., the negative size effect is observed. Catalytic reduction of U(VI) with hydrazine in H2SO4 solutions is significantly faster than in HClO4 and HNO3, and in HClO4 it is slightly faster than in HNO3. The results were interpreted within the framework of the concept of the energetic nonuniformity of the surface atoms and of the mechanisms of catalytic reduction of U(VI) with hydrazine in acid solutions.