一氟化镱 | 37346-87-5

• 分子结构分类: 无机化合物 - 混合金属/非金属化合物 - 镧系盐
• 中文名称: 一氟化镱
• 英文名称: ytterbium monofluoride
• CAS: 37346-87-5
• 化学式: FYb
• 分子量: 192.038
• InChiKey: XNDFKEPMJWDIIM-UHFFFAOYSA-M

计算性质

• 辛醇/水分配系数(LogP)：
  0.42
• 重原子数：
  2.0
• 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：
  0.0
• 氢给体数：
  0.0
• 氢受体数：
  0.0

反应信息

• 作为产物：
  描述：

  氟化镱 在 Al 作用下， 以 neat (no solvent) 为溶剂， 生成 一氟化镱
  参考文献：
  名称：

  Laser‐rf double resonance spectroscopy of ¹⁷⁴YbF in the X ²Σ⁺ state: Spin‐rotation, hyperfine interactions, and the electric dipole moment

  摘要：

  We report the first laser-radio-frequency double resonance spectrum of a simple lanthanide compound, the paramagnetic radical 174YbF. Measurements of the rf intervals as a function of the rotational quantum number N allow us to determine precise spin-rotation and fluorine hyperfine interaction coupling constants for the X 2Σ+(v=0 and v=1) ground states of 174YbF. The results for v=0 are γ0=−13.424 00(16) MHz, γ1=3.982 3(11) kHz, γ2=−25(1) mHz, b0=141.795 6(5) MHz, b1=−0.510(11) kHz, c=85.402 6(14) MHz, C=20.38(13) kHz. For v=1 they are γ0=−33.811 8(7) MHz, γ1=4.323(6) kHz, γ2=−28(9) mHz, b0=139.89(4) MHz, b1=−0.7(4) kHz, c=86.75(5) MHz, C=18.3(1) kHz. A direct microwave measurement of the first rotational interval in X 2Σ+(v=0) gives the rotational constant B0=0.241 292 7(7) cm−1. Finally, the Stark shift of hyperfine transitions in the first two rotational states of X 2Σ+(v=0) are analyzed to determine the electric dipole moment μe=3.91(4) D. We find that although the gross structure of YbF in its ground state resembles that of an alkaline earth monofluoride, the 4f shell is evidently important even in the low-lying excited states and leads to unusual behavior in the ground-state magnetic structure.

  DOI：

  10.1063/1.472569

文献信息

• Laser fluorescence study of ytterbium plus halomethane reactions
  作者：R. Dirscherl、Henry U. Lee

  DOI：10.1063/1.440614

  日期：1980.10.15

  The reactions of ytterbium (Yb) with a series of halomethanes (RX) have been studied in a beam plus gas arrangement. The unrelaxed YbX products are detected by cw tunable dye laser excitation. Prominent sequences belonging to the YbX (A 2∏1/2−X 2Σ+) band systems are readily identified in the region 5350–6450 Å. The vibrational state distributions exhibited by the YbX products are characteristically bell-shaped, suggesting a direct reaction mechanism. Moreover, the fraction of energy released into YbX product vibration is found to increase with the reaction exoergicity and with the degree of halogenation in RX. These systematic trends in the energy partitioning are correlated with recent results from the well-studied alkali and alkaline-earth analogs.