Photolysis of Nitromethane in Gas Phase at 313 nm
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概要
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Photolysis of nitromethane in gas phase at 313.0 nm was studied at 55°C. Methyl nitrite, formaldehyde, nitrosomethane and NO were obtained as main products, their quantum yields being determined to be φ<SUB>CH<SUB>3</SUB>ONO</SUB>=0.22, φ<SUB>HCHO</SUB>=0.20, φ<SUB>CH<SUB>3</SUB>NO</SUB>=0.06 and φ<SUB>NO</SUB>=0.10. The dependence of the quantum yields on the pressure of quenching gases such as ethylene, <I>cis</I>-2-butene, CO<SUB>2</SUB> and NO were investigated. The quantum yields of products except formaldehyde decrease with increase in pressure of ethylene or <I>cis</I>-2-butene. The sensitized isomerization of 2-butene was also observed. The quantum yield of triplet nitromethane was determined by the Gundall method and compared with that by product analysis. Both give the identical value 0.6. Since φ<SUB>HCHO</SUB> is not affected by any quencher, it is concluded that formaldehyde is formed directly from singlet excited nitromethane.
- 公益社団法人 日本化学会の論文
著者
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Takahasi Makoto
Department of Pure and Applied Sciences, College of General Education, The University of Tokyo
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Mikuni Hitoshi
Department of Pure and Applied Sciences, College of General Education, The University of Tokyo
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Mikuni Hitoshi
Department of Pure and Applied Sciences, College of Gerneal Education, The University of Tokyo
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Honda Koichi
Department of Pure and Applied Sciences, College of Gerneal Education, The University of Tokyo
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Honda Koichi
Department of Chemistry, Faculty of Science, Tokyo Metropolitan University
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