helium hydride | 77965-56-1

• 分子结构分类: 无机化合物 - 混合金属/非金属化合物
• 英文名称: helium hydride
• CAS: 77965-56-1
• 化学式: HHe
• 分子量: 5.0
• InChiKey: VFSHXFTVUHSLHV-QIAWKQIGSA-N

反应信息

• 作为产物：
  描述：

  在 2-氯苯亚甲基丙二腈 作用下， 以 gas 为溶剂， 生成 helium hydride
  参考文献：
  名称：

  作为C衰变2种Σ + HEH的quasibound状态：一种实验和理论研究

  摘要：

  使用平移光谱，实验证据提出了一种用于在C的衰减强烈的同位素效应2 Σ + quasibound HEH的状态。对辐射寿命和离解寿命的理论研究支持了这一结果。本研究提供了衰变过程以及C的同位素依赖性的全面描述2 Σ + HEH的状态。

  DOI：

  10.1016/0009-2614(88)80339-7

文献信息

• The emission spectrum of helium hydride. I. Bands near 8000 Å
  作者：W. Ketterle、A. Dodhy、H. Walther

  DOI：10.1063/1.454914

  日期：1988.9.15

  Spectra of helium hydride were observed after neutralization of a mass-selected HeH+ beam. The molecules were produced in a fast beam, and so a special setup had to be used to avoid Doppler broadening and a careful calibration procedure had to be applied to determine the line positions and linewidths. In an earlier paper, we reported the first observation of a discrete spectrum of helium hydride, which was discovered by means of an emission band near 8000 Å. In this paper, a detailed analysis of this band for all four stable isotopic mixtures is given. For the deuterides several vibrational bands were observed, which allowed equilibrium molecular constants to be determined. These constants agree with the results of recent ab initio calculations. The similarity of these constants to those of HeH+ in the ground state confirms that the observed states are Rydberg states. Comparison of the molecular constants for different isotopic mixtures shows deviations from the Born–Oppenheimer approximation. Born–Oppenheimer breakdown parameters were derived. Both the upper and lower states show predissociation to the repulsive ground state of helium hydride. The line intensities give evidence of a dependence of the electronic transition moment on the interatomic distance.