On the Emission Spectra of the Unimolecular Reaction of Methylamine by Electron Impact
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概要
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The emission spectra of the following excited species produced from methylamine by electron impact (the energy of 150 eV) at a low pressure were observed: NH(<I>A</I><SUP>3</SUP>Π–<I>X</I><SUP>3</SUP>Σ), CN(<I>B</I><SUP>2</SUP>Σ–<I>X</I><SUP>2</SUP>Σ), CH(<I>A</I><SUP>2</SUP><I>Δ</I>–<I>X</I><SUP>2</SUP>Π), and H(Balmer series). It was confirmed that the excited species are produced by a unimolecular reaction of methylamine. The replacement by deuterium decreases the production of the excited hydrogen atom from methylamine by about 40%, this supports the idea that the excited hydrogen atom is produced through a superexcited state of methylamine. It was also determined that the production of the excited hydrogen atom of the methyl group was less than that of the amino group by about 20%. This is in contrast to the findings on the mass spectrum of CD<SUB>3</SUB>NH<SUB>2</SUB>, where the peak of CD<SUB>2</SUB>NH<SUB>2</SUB><SUP>+</SUP> was much higher than that of CD<SUB>3</SUB>NH<SUP>+</SUP>. The NH radical in the <I>A</I><SUP>3</SUP>Π state was produced from methylamine and dimethylamine, while the NH radicals in the <I>A</I><SUP>3</SUP>Π and the <I>c</I><SUP>1</SUP>Π states were produced from ammonia.
- 公益社団法人 日本化学会の論文
著者
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Kuwata Keiji
Department Of Chemistry Faculty Of Science Osaka University
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Fujita Iwao
Department Of Nuclear Engineering Faculty Of Engineering Kyushu University:(present Address) Tokyo S
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Fukui Kiyoshi
Department Of Biochemistry National Cardiovascular Center Research Institute
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