Polarized electronic absorption spectra and assignment of fluorene and biphenyls.
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概要
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The divided electronic spectra polarized parallel to the long and short axes of molecules of biphenyl, THP (4,5,9,10-tetrahydropyrene), fluorene, and DHPH (9,10-dihydrophenanthrene) were determined by dichroism analysis using the stretched PVA film method. The experimental results are in good agreement with the ones calculated by the LCAO MO SCF CI method. Every compound has a very weak absorption (<I>f</I>≈10<SUP>−4</SUP>) as the first band in the region of 32000–35000 cm<SUP>−1</SUP>, which is electronically allowed and polarized parallel to the short axis. The intense band (34000–44000 cm<SUP>−1</SUP>) of biphenyl consists of a relatively strong (39100 cm<SUP>−1</SUP>) band and a weak (40500 cm<SUP>−1</SUP>) band: the former is polarized parallel to the long axis and the latter to the short. Both fluorene and DHPH show five well corresponding electronic bands in the region below 45000 cm<SUP>−1</SUP>.
- 公益社団法人 日本化学会の論文
著者
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Tanizaki Yoshie
Department Of Chemistry Nagaoka University Of Technology
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Hiratsuka Hiroshi
Department Of Chemistry Faculty Of Engineering Gunma University
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Yoshinaga Tetsutaro
Department Of Applied Chemistry Faculty Of Engineering Kyushu Institute Of Technology
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Hiratsuka Hiroshi
Department of Chemistry, Tokyo Institute of Technology
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