lanthanum monofluoride | 13943-44-7

• 分子结构分类: 无机化合物 - 混合金属/非金属化合物 - 镧系盐
• 英文名称: lanthanum monofluoride
• CAS: 13943-44-7
• 化学式: FLa
• 分子量: 157.904
• InChiKey: NTTIBSGIKNTYNW-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：

  三氢化镧 、 六氟化硫 以 gaseous matrix 为溶剂， 生成 lanthanum monofluoride
  参考文献：
  名称：

  Molecular‐beam laser spectroscopy of lanthanum monofluoride: Magnetic hyperfine and dipole moment measurements

  摘要：

  The lanthanum monofluoride molecule (LaF) was generated in a pulsed molecular beam by chemical reaction in a laser-produced plasma. The (0,0) and (1,0) bands of the B 1Π–X 1Σ+ system of LaF (ν00=16 184.52 cm−1), and the 0+–X 1Σ+ band (ν00=16 637.95 cm−1), were investigated at sub-Doppler resolution (120 MHz) using a ring dye laser to excite fluorescence. The electron orbital-nuclear spin interaction parameter (magnetic hyperfine a parameter) was determined to be +138(5) MHz and +149(5) MHz for the v=0 and v=1 levels of the B 1Π state, respectively (2σ error bounds). The observed hyperfine structure is interpreted in terms of ligand field theory. Molecular rotational constants for all three bands were found to be in good agreement with previous work [Schall et al., J. Mol. Spectrosc. 100, 437 (1983)]. The permanent electric dipole moments of the X 1Σ+ and 0+ states of LaF were determined by molecular-beam Stark spectroscopy to be 1.808(21) D and 3.43(10) D (2σ errors). Results are compared with recent experimental determinations of the dipole moments of the other group III monofluorides.

  DOI：

  10.1063/1.463952

文献信息

• Molecular‐beam laser spectroscopy of lanthanum monofluoride: Magnetic hyperfine and dipole moment measurements
  作者：Benoit Simard、Andrew M. James

  DOI：10.1063/1.463952

  日期：1992.10

  The lanthanum monofluoride molecule (LaF) was generated in a pulsed molecular beam by chemical reaction in a laser-produced plasma. The (0,0) and (1,0) bands of the B 1Π–X 1Σ+ system of LaF (ν00=16 184.52 cm−1), and the 0+–X 1Σ+ band (ν00=16 637.95 cm−1), were investigated at sub-Doppler resolution (120 MHz) using a ring dye laser to excite fluorescence. The electron orbital-nuclear spin interaction parameter (magnetic hyperfine a parameter) was determined to be +138(5) MHz and +149(5) MHz for the v=0 and v=1 levels of the B 1Π state, respectively (2σ error bounds). The observed hyperfine structure is interpreted in terms of ligand field theory. Molecular rotational constants for all three bands were found to be in good agreement with previous work [Schall et al., J. Mol. Spectrosc. 100, 437 (1983)]. The permanent electric dipole moments of the X 1Σ+ and 0+ states of LaF were determined by molecular-beam Stark spectroscopy to be 1.808(21) D and 3.43(10) D (2σ errors). Results are compared with recent experimental determinations of the dipole moments of the other group III monofluorides.