Studies of the π→π<SUP>*</SUP> Absorption Bands of 9,10-Phenanthrenequinone

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概要

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• The π→π<SUP>*</SUP> S–S absorption spectra of 9,10-phenanthrenequinone and 3-bromophenanthrenequinone in solutions up to the vacuum. UV region were obtained. On the other hand, MO calculations of the π-electronic systems of these quinones were carried out by means of the P–P–P method. The π→π<SUP>*</SUP> absorption bands of these quinones were assigned on the basis of the calculated results. The blue-shift of the longest-wavelength π→π<SUP>*</SUP> band of phenanthrenequinone due to the bromine-atom substitution at its 3-position was observed. Similar facts are found in aromatic carbonyl compounds, fluorenone and acetophenone.

• 公益社団法人 日本化学会の論文

著者

• Kuboyama Akira

  National Chemical Laboratory for Industry

• Kobayashi Fumio

  National Chemical Laboratory for Industry

• Morokuma Satomi

  National Chemical Laboratory for Industry

関連論文

• The electronic absorption and emission spectra of biphenylene-2,3-dione in solutions.
• The CNDO/S-CI calculations of the singlet n.PI.* and .PI..PI.* levels of quinones.
• The two n,.PI.* transitions of monohalogenoanthraquinones.
• Studies of the .PI.,.PI.* absorption bands of 2,6-dimethyl-4-pyrone.
• Studies of the π→π* Absorption Bands of α-Santonin
• Studies of the π→π* Absorption Bands of 9,10-Phenanthrenequinone
• The long-wavelength n.PI.* phosphorescence spectra of p-quinones in polycrystalline solutions at 77K.

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