argon * glyoxal | 187023-46-7

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: argon * glyoxal
• CAS: 187023-46-7
• 化学式: Ar*C₂H₂O₂
• 分子量: 97.9847
• InChiKey: STMDHBOHISPJAO-UHFFFAOYSA-N

反应信息

• 作为产物：
  描述：

  草酸醛 、 氩 以 gas 为溶剂， 生成 argon * glyoxal
  参考文献：
  名称：

  Orientation and molecular orbital dependence in the spin changing collision C₂H₂O₂(S₁)+Ar→C₂H₂O₂(T₁)+Ar: A study through van der Waals complexes

  摘要：

  The orientation dependence in the spin-changing collision C2H2O2(S1)+Ar→C2H2O2(T1) +Ar has been examined by time-resolved laser induced fluorescence studies of the intersystem crossing rates in the glyoxal⋅Ar complexes with isomeric structures. Dramatic variation of intersystem crossing rates with complex structures and van der Waals excitations indicate strong orientation dependence in this process. Experimental results show that Ar interaction with the glyoxal n(O) orbital is two orders of magnitude more effective in inducing intersystem crossing than Ar interaction with the π* (CO) orbital.

  DOI：

  10.1063/1.463568

文献信息

• Isomeric structures and van der Waals vibrational frequencies of the glyoxal⋅Ar complexes. I. Fluorescence excitation spectroscopy
  作者：Luc Lapierre、Donald Frye、Hai‐Lung Dai

  DOI：10.1063/1.462018

  日期：1992.2.15

  From the band shape and the concentration dependence of the peak intensity in the fluorescence excitation spectrum observed in a supersonic expansion of a He/Ar/glyoxal mixture near the 000Ã←X̃ band of glyoxal, it was found that the spectral features can be assigned to the following van der Waals complexes; (glyoxal)2⋅Ar, glyoxal⋅Ar2, (glyoxal)2, and three different isomers of glyoxal⋅Ar. The approximate structures of the three glyoxal⋅Ar isomers have been determined from rotational band contour analyses. In the electronic ground state, the Ar atom is either on the C2 axis 3.6 Å above the glyoxal plane (the top isomer), in the HCCO gulf of the glyoxal plane 4.3 Å away from the glyoxal center of mass (the side isomer), or in the HCO gulf of the glyoxal plane 4.8 Å away from the glyoxal center of mass (the front isomer). As the glyoxal molecule is electronically excited to the Ã 1A1 state, the Ar atom moves away from oxygen by more that 1 Å for all three isomers. Excited van der Waals vibrational levels associated with the 0̄0, Ã state of glyoxal were observed and assigned for all three glyoxal⋅Ar isomers.
• Electronic relaxation induced by the dissociation of van der Waals complexes: Intersystem crossing in ¹<i>A</i>_<i>u</i> Ar and He glyoxal complexes
  作者：Christophe Jouvet、Benoit Soep

  DOI：10.1063/1.442244

  日期：1981.8.15

  The formation of helium and argon glyoxal complexes has been observed. Their lines and bands have been identified from fluorescence excitation spectra in a supersonic jet. Rapid dissociation of the complexes has been shown for all vibronic levels. Further, it has been shown that this dissociation proceeds either to fluorescent or nonfluorescent levels, depending on the vibronic energy and the complex size. The nonfluorescent state has been identified as the phosphorescent 3Au state.