钼二聚体 | 12596-54-2

• 分子结构分类: 无机化合物 - 均相金属化合物 - 均相过渡金属化合物
• 中文名称: 钼二聚体
• 英文名称: molybdenum dimer
• 英文别名: dimolybdenum；(molybdenum)2；molybdenum
• CAS: 12596-54-2
• 化学式: Mo₂
• 分子量: 191.88
• InChiKey: ZGHDMISTQPRNRG-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.01
• 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：
  0
• 氢受体数：
  0

反应信息

• 作为产物：
  描述：

  钼 生成 钼二聚体
  参考文献：
  名称：

  Fluorescence spectrum of Mo₂in argon and krypton matrices

  摘要：

  The time resolved fluorescence spectra of Mo2 isolated in Ar and Kr matrices at 14 °K are presented. Depending on excitation wavelength, either of two separate vibrational progressions with 475.7 (±4.5) cm−1 spacings can be observed in emission. Similarities between several features in the two emission spectra lead to the conclusion that the progressions arise from Mo2 trapped in two distinct sites, each characterized by its own absorption spectrum. Excitation spectra elucidate the overlapping absorption spectra of the two sites. The measured emission lifetimes are long and not single exponential. In krypton matrices, lifetimes of 0.85 msec from one site and a biexponential emission decay of 0.70 and 1.94 msec from a second site are observed. In argon matrices, 2.1 msec emission decay times in one site and a triexponential decay with components of 2.1, 3.93, and 6.3 msec were measured in a second site. Phonon structure in the well resolved spectra show that the matrix coupling is different for the two matrix sites. Various empirical correlation rules are used to test the validity of ωe as well as to compare it to other experimental quantities for Mo2. These rules indicate a 1.9 Å bond length for Mo2. The fluorescence lifetimes and the large spectral shift of the emission relative to the excitation energy lead to the conclusion that the emission does not emanate from the initially excited level. Instead, the emission appears to come from one of the higher spin multiplicity levels in a dense manifold of states lying at somewhat lower energies than the 1Σu+ level coupled by laser radiation to the 1Σg+ ground state.

  DOI：

  10.1063/1.440917

文献信息

• Dem'yanenko, A. V.; Puretzky, A. A., Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy, <hi>1990</hi>, vol. 46, p. 509 - 516
  作者：Dem'yanenko, A. V.、Puretzky, A. A.

  DOI：——

  日期：——