Photoionization study of the sulfur monoxide radical produced by pyrolysis of ethylene sulfoxide.
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概要
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Sulfur monoxide (SO) radical has been produced in the gas phase by pyrolysis of ethylene sulfoxide (C<SUB>2</SUB>H<SUB>4</SUB>=SO) at 510 °C. The vacuum ultraviolet photoionization efficiency curve between 915 and 1220 Å has been obtained for the first time. Several thermodynamic data about C<SUB>2</SUB>H<SUB>4</SUB>=SO have also been obtained from direct photoionization. The values of the bond energies of D<SUB>0</SUB>(C<SUB>2</SUB>H<SUB>4</SUB>=SO) and D<SUB>0</SUB>(C<SUB>2</SUB>H<SUB>4</SUB>=SO<SUP>+</SUP>) are 4640±30 and 5160±30 cm<SUP>−1</SUP> respectively. Ionization potentials (IP) of the SO(X<SUP>3</SUP>Σ<SUP>−</SUP>) radical and C<SUB>2</SUB>H<SUB>4</SUB>=SO, and the appearance potential (AP) of SO<SUP>+</SUP> fragment ion from C<SUB>2</SUB>H<SUB>4</SUB>=SO are 10.28±0.01, 9.49±0.02, and 10.13±0.01 eV. In the system of C<SUB>2</SUB>H<SUB>4</SUB>=SO, the AP is lower than the IP and this phenomenon has only been found in this system.
- 公益社団法人 日本化学会の論文
著者
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FUKUDA KENICHI
Department of Anesthesia and Orofacial Pain Center, Tokyo Dental College, Suidoubashi Hospital
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Tanaka Ikuzo
Department of Chemistry, Tokyo Institute of Technology
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Fukuda Kenichi
Department of Chemistry, Tokyo Institute of Technology
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Nishitani Eisuke
Department of Chemistry, Tokyo Institute of Technology
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