The low lying electronic states of dichloromaleic anhydride.
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概要
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The polarized Raman and infrared spectra of dichloromaleic anhydride were studied and the assignments of the normal vibrations were reinvestigated based on the polarization behaviors of the spectral bands and on the normal coordinate calculation. Using the assignments the vibrational structure of the phosphorescence spectrum was analyzed and the phosphorescence lifetime was also measured. These results indicate that the lowest triplet state of this molecule is a <SUP>3</SUP>(π, π<SUP>*</SUP>) state perturbed by closely located <SUP>3</SUP>(n, π<SUP>*</SUP>) states. The near ultraviolet absorption and phosphorescence excitation spectra were measured and four absorption bands due to <SUP>3</SUP>(n, π<SUP>*</SUP>)←<SUP>1</SUP>A<SUB>1</SUB>, <SUP>1</SUP>A<SUB>2</SUB>(n, π<SUP>*</SUP>)←<SUP>1</SUP>A<SUB>1</SUB>, <SUP>1</SUP>B<SUB>1</SUB>(n, π<SUP>*</SUP>)←<SUP>1</SUP>A<SUB>1</SUB>, and <SUP>1</SUP>A<SUB>1</SUB>(π, π<SUP>*</SUP>)←<SUP>1</SUP>A<SUB>1</SUB> transitions were found. The polarization experiment made on the <SUP>1</SUP>A<SUB>2</SUB>(n, π<SUP>*</SUP>)←<SUP>1</SUP>A<SUB>1</SUB> absorption suggests that this transition borrows the intensity from the <SUP>1</SUP>A<SUB>1</SUB>(π, π<SUP>*</SUP>)←<SUP>1</SUP>A<SUB>1</SUB> transition.
- 公益社団法人 日本化学会の論文
著者
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Shimada Hiroko
Department Of Applied Chemistry Faculty Of Engineering Toyama University
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Shimada Ryoichi
Department of Chemistry, Faculty of Science, Kyushu University
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Ishibashi Yoshimi
Department of Chemistry, Faculty of Science, Fukuoka University
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