dirubidium | 25681-81-6

• 分子结构分类: 无机化合物 - 均相金属化合物 - 均相碱金属化合物
• 英文名称: dirubidium
• 英文别名: rubidium dimer；rubidium
• CAS: 25681-81-6
• 化学式: Rb₂
• 分子量: 170.936
• InChiKey: MQZGYYYBCTXEME-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.76
• 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

• 作为反应物：
  描述：

  水 、 dirubidium 以 gas 为溶剂， 生成 rubidium 、 rubidium monoxide radical
  参考文献：
  名称：

  Study of the chemiluminescent reaction between alkali dimers and oxygen atoms

  摘要：

  The reaction of alkali dimers with oxygen atoms has been studied in a crossed beam experiment. Strong chemiluminescence of the reaction products was observed. It is shown that the luminescence was emitted by alkali atoms from the reaction M2+O→MO+M (M alkali atom). M can be excited up to the exoergicity of this reaction at least in the cases M = Cs and Na. For M = Cs, detailed rate constants for the excitation of the different excited states have been determined using both laser induced fluorescence and chemiluminescence. The rates decrease nearly exponentially as a function of the excitation energy. They partly follow the expectation of statistical theories. Absolute reaction cross sections have been determined for all of the reactions investigated. They agree partially with those predicted by the harpoon model.

  DOI：

  10.1063/1.441820
• 作为产物：
  描述：

  rubidium 以 gaseous matrix 为溶剂， 生成 dirubidium
  参考文献：
  名称：

  光-光学双共振和傅里叶变换光谱：该RB 2乙1 Π ü电子状态直至quasibound能级

  摘要：

  几乎Rb的所有quasibound振动能级2乙1 Π ü状态被通过双谐振激励方案来访问。共振激发过程中，X 1 Σ克+ →A 1 Σ Ü + →（2）1 Π克已被用来填充上（2）的单RO-振动能级1 Π克状态。的（2）的光谱1 Π克→乙1 Π ü红外荧光通过高分辨率傅立叶变换光谱记录下来。考虑到先前研究过的B 1Π ü →X 1 Σ克+荧光光谱导致对于B准确有效的分子常数1 Π ü状态。对于最高的振动水平，观察到由于隧穿效应而导致的线展宽。发现势垒高度比其渐近极限（）在9.14Å处高/ 2〜205 cm -1。

  DOI：

  10.1016/s0009-2614(97)00634-9

文献信息

• Raman Spectroscopic Investigation of Matrix Isolated Rubidium and Cesium Molecules:  Rb₂, Rb₃, Cs₂, and Cs₃^,¹
  作者：Andreas Kornath、Anja Zoermer、Ralf Ludwig

  DOI：10.1021/ic990506m

  日期：1999.10.1

  The rubidium molecules Rb(2) and Rb(3) and the cesium molecules Cs(2) and Cs(3) were isolated in argon matrixes and characterized for the first time by Raman spectroscopy. The fundamental frequencies of the dimers were observed at 59.1 cm(-)(1) for the rubidium dimer and 45.8 cm(-)(1) for the cesium dimer. The Raman lines of the rubidium trimer appeared at 38.3 and 53.9 cm(-)(1), and the lines of the

  分子Rb（2）和Rb（3）以及铯分子Cs（2）和Cs（3）在氩气基质中分离，并通过拉曼光谱法进行了首次表征。the二聚体的二聚体基频为59.1 cm（-）（1），铯二聚体为45.8 cm（-）（1）。trim三聚体的拉曼线出现在38.3和53.9 cm（-）（1），铯三聚体的线出现在24.4和39.5 cm（-）（1）。将振动频率与气相频率和密度泛函理论（DFT）计算进行了比较。此外，通过拉曼矩阵光谱观察到在固态氩气中分离的Cs（2）的（1）Pi（u）态的最低振动水平。
• Wavepacket dynamics and predissociation of the D1Πu state of Rb2
  作者：Bo Zhang、Lars-Erik Berg、Tony Hansson

  DOI：10.1016/s0009-2614(00)00730-2

  日期：2000.8

  first experimental investigation of the real-time dynamics of predissociation in a diatomic molecule involving more than two electronic states – the predissociation of the state of Rb2. Our results show that the state is strongly predissociated, τ≈5 ps, above a sharp energy threshold. We propose that mainly the (1) state causes the fast predissociation and that the fine-structure components of the products

  我们目前在涉及两个以上的电子状态的原子分子预解的实时动态的第一个实验性研究-中的预解Rb的状态2。我们的结果表明，该状态是强烈预离解，τ ≈5PS，上述尖锐的能量阈值。我们建议主要是（1）状态引起快速的预离解，并且产品的精细结构成分是通过大核间距下分子状态之间的耦合而混合的。此外，波包信号的向外向内不对称性归因于在探测（Rydberg）状态下演化的波包的自电离。
• Observation and assignment of the state of
  作者：Xiaomin Han、Xinhe Wang、Tao Wang、Wei Xiong、Xingcan Dai

  DOI：10.1016/j.cplett.2012.04.029

  日期：2012.6

  The 2(1)Pi(g) state of Rb-2 has been observed using the infrared infrared double resonance method. The low part of the potential curve of the state is characterized for the first time. The absolute vibrational numbers are determined with isotope effect. The molecular constants of this state are obtained from a Dunham fit and the potential curve of the state is constructed using the Rydberg-Klein-Rees method. (C) 2012 Elsevier B.V. All rights reserved.