dioxo(235U)uranium-235(2+) | 226089-74-3

• 分子结构分类: 无机化合物 - 混合金属/非金属化合物 - 锕系有机物
• 英文名称: dioxo(235U)uranium-235(2+)
• CAS: 226089-74-3
• 化学式: O₂U
• 分子量: 266.999
• InChiKey: WYICGPHECJFCBA-SIUYXFDKSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.24
• 重原子数：
  3
• 可旋转键数：
  0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  34.1
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  dioxo(235U)uranium-235(2+) 以 further solvent(s) 为溶剂， 生成 铀
  参考文献：
  名称：

  Thermal reduction of U(VI) in laser liquids based on phosphorus oxychloride

  摘要：

  The kinetics of U(VI) reduction in laser liquids POCl3-SnCl4-(UO22+)-U-235-Nd3+ and POCl3-SbCl5-(UO2)-U-235 (2+)-Nd3+ at 340, 360, and 370 K under the conditions ensuring protection from light was studied. The molar extinction coefficients of U(IV) at lambda = 549, 635, 670, and 1148 nm were determined. The rate of U(IV) accumulation increases with temperature and with Nd3+ and UO22+ concentrations. The observed rate constants of U(IV) accumulation in POCl3-SbCl5-(UO22+)-U-235-Nd3+ are 2-3 times lower than in POCl3-SnCl4-(UO22+)-U-235 Nd3+. The activation energy of the U(IV) accumulation in the temperature range 340-370 K was 128 and 131 kJ mol(-1) for POCl3-SnCl4-(UO22+)-U-235-Nd3+ and POCl3-SbCl5-(UO22+)-U-235-Nd3+, respectively. The SternVolmer constant of intracomplex nonradiative excitation energy transfer Nd3+. U4+ amounted to (9.1 +/- 1.8) x 10(5) and (8.4 +/- 1.2) x 10(5) l mol(-1) s(-1) for POCl3-SnCl4-(UO22+)-U-235-Nd3+ and POCl3-SbCl5-(UO22+)-U-235-Nd3+, respectively.

  DOI：

  10.1134/s1066362210020062

文献信息

• Reduction of U(VI) in laser liquids based on phosphorus oxychloride in the course of prolonged storage
  作者：G. V. Tikhonov

  DOI：10.1134/s1066362210020074

  日期：2010.4

  The kinetic parameters of the reduction U(VI). U(IV) in laser liquids POCl3-SnCl4-(UO22+Nd3+)-U-235 and POCl3-SbCl5-(UO2)-U-235 (2+)-Nd3+ in the course of their prolonged storage at 294 +/- 3 K were determined. The rate constant of the U(IV) accumulation depends on particular starting Nd and U(VI) compounds and on the concentration of proton-containing impurities in the liquids. The rate constants of U(IV) accumulation in POCl3-SnCl4-(UO22+)-U-235-Nd3+ are lower than in POCl3-SbCl5-(UO22+)-U-235-Nd3+, which correlates with the difference in the oxygen affinities of Sn4+ and Sb5+. The activation energy of U(IV) accumulation in POCl3-(SbCl5UO22+)-U-235-Nd3+ and POCl3-SnCl4-(UO22+)-U-235-Nd3+ at 294 +/- 3 K was 134 and 175 kJ mol(-1), respectively.