uranium-fluorine

• 分子结构分类: 无机化合物 - 混合金属/非金属化合物 - 锕系盐类
• 英文名称: uranium-fluorine
• 英文别名: Uranium;hydrofluoride；uranium;hydrofluoride
• 化学式: FU
• 分子量: 257.027
• InChiKey: FGBWGPYNPCUMFK-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.15
• 重原子数：
  2
• 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：
  0
• 氢给体数：
  1
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  barium fluoride 、 uranium-fluorine 生成
  参考文献：
  名称：

  Thermochemical properties of the gaseous lower valent fluorides of uranium

  摘要：

  High temperature gaseous equilibria involving the lower-valent uranium fluorides UF, UF2, UF3, and UF4 were studied by mass spectrometry, and reaction enthalpies and entropies with estimated uncertainties of ±2 kcal/mol and ± 2 cal/deg mol were derived solely from the temperature coefficients of reaction equilibrium constants. These results yield the following bond dissociation energies at 298 K in kcal/mol: D°(F3U–F) = 148.2; D° (F2U–F) = 149.0; D° (FU–F) = 136.5; and D° (U–F) = 157.5. The sum of these values is compatible with the heat of atomization of UF4(g) evaluated from independent sources. A value of D°(F3U–F) derived from electron impact measurements agrees well with the equilibrium data. The reaction entropy data indicate that the electronic entropies of UF, UF2, and UF3 are comparable to that of atomic uranium in the same temperature range, and provide a basis for estimating the total thermodynamic functions of these species. Experimental entropies obtained for UF4 indicate the likelihood of a distorted tetrahedral structure of effective C2v symmetry. The results provide sufficient information for predicting the equilibrium composition of the gaseous U–F system over a wide temperature range.

  DOI：

  10.1063/1.443246
• 作为产物：
  描述：

  铀 、 barium fluoride 生成 uranium-fluorine
  参考文献：
  名称：

  Thermochemical properties of the gaseous lower valent fluorides of uranium

  摘要：

  High temperature gaseous equilibria involving the lower-valent uranium fluorides UF, UF2, UF3, and UF4 were studied by mass spectrometry, and reaction enthalpies and entropies with estimated uncertainties of ±2 kcal/mol and ± 2 cal/deg mol were derived solely from the temperature coefficients of reaction equilibrium constants. These results yield the following bond dissociation energies at 298 K in kcal/mol: D°(F3U–F) = 148.2; D° (F2U–F) = 149.0; D° (FU–F) = 136.5; and D° (U–F) = 157.5. The sum of these values is compatible with the heat of atomization of UF4(g) evaluated from independent sources. A value of D°(F3U–F) derived from electron impact measurements agrees well with the equilibrium data. The reaction entropy data indicate that the electronic entropies of UF, UF2, and UF3 are comparable to that of atomic uranium in the same temperature range, and provide a basis for estimating the total thermodynamic functions of these species. Experimental entropies obtained for UF4 indicate the likelihood of a distorted tetrahedral structure of effective C2v symmetry. The results provide sufficient information for predicting the equilibrium composition of the gaseous U–F system over a wide temperature range.

  DOI：

  10.1063/1.443246

文献信息

• Formation and characterization of HUF and DUF in solid argon
  作者：Thomas Vent-Schmidt、Rodney Dale Hunt、Lester Andrews、Sebastian Riedel

  DOI：10.1039/c3cc41379a

  日期：——

  Reactions of laser-ablated U atoms with HF and DF in condensing and solid rare gas produce HUF and DUF as the major new products based on close agreement between observed and calculated vibrational frequencies and deuterium shifts for U–H and U–F stretching modes at 1383 and 544 cm−1, respectively.

  激光剥蚀的铀(U)原子与氟化氢(HF)和氟化氘(DF)在浓缩和固态稀有气体中反应，主要生成新的产物氢氟化铀(HUF)和氘氟化铀(DUF)，这一结论基于观察到的振动频率与计算值之间以及铀-氢(U–H)和铀-氟(U–F)伸缩模式的氘位移在1383和544 cm−1处分别的高度一致性。
• A novel time-resolved laser fluorescence spectroscopy system for research on complexation of uranium(IV)
  作者：S. Lehmann、G. Geipel、G. Grambole、G. Bernhard

  DOI：10.1016/j.saa.2009.04.013

  日期：2009.9

  studying the fluorescence properties of uranium(IV) in perchloric acid, we showed uranium(IV) to have a detection limit of 5 × 10−7 M and a fluorescence decay time of 2.74 ± 0.36 ns. We further investigated the fluorescence properties of uranium(IV) during the reaction with fluoride and applied our novel laser system to study the complexation of uranium(IV) with fluoride. Our data revealed the formation

  迄今为止，只有很少的研究研究了配合物的化学形态以及金属离子的荧光特性，这些金属离子的发射荧光寿命仅在几纳秒的范围内。这是由于缺乏允许进行这些测量的高级方法所致。在当前的研究中，我们建立了一个新的时间分辨激光荧光光谱系统，利用该系统可以研究荧光寿命很短的金属离子（例如铀（IV）及其化合物）的荧光特性。通过研究高氯酸中铀（IV）的荧光特性，我们发现铀（IV）的检出限为5×10 -7 M和2.74±0.36 ns的荧光衰减时间。我们进一步研究了铀（IV）与氟化物反应期间的荧光性质，并应用了我们的新型激光系统来研究铀（IV）与氟化物的络合。 我们的数据揭示了铀（IV）和氟化物的1：1络合物的形成。铀的相应复合物的形成常数（IV），氟化UF 3+被发现是日志 β 0  = 9.43±1.94。我们的结果表明，我们新颖的时间分辨激光荧光光谱系统可以成功地对金属离子及其化合物进行形态测量，且荧光寿命很短
• Thermochemistry of uranium halide ions: reactions of uranium(+) with methyl fluoride, silicon tetrafluoride, methyl chloride and carbon tetrachloride
  作者：P. B. Armentrout、J. L. Beauchamp

  DOI：10.1021/j150626a030

  日期：1981.12
• Hunt, Rodney D.; Thompson, Craig; Hassanzadeh, Parviz, Inorganic Chemistry, 1994, vol. 33, # 2, p. 388 - 391
  作者：Hunt, Rodney D.、Thompson, Craig、Hassanzadeh, Parviz、Andrews, Lester

  DOI：——

  日期：——
• Metal atom oxidation lasers
  作者：W.W. Rice、W.H. Beattie

  DOI：10.1016/0009-2614(73)87068-x

  日期：——