ESR studies at high pressure. II. Spin exchange of 2,2,6,6-tetramethyl-4-oxo-1-piperidinyloxyl in protic and aprotic solvents.
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概要
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The activation volumes for the spin exchange of 2,2,6,6-tetramethyl-4-oxo-1-piperidinyloxyl (Tanone) in protic and aprotic solvents were determined from the pressure dependence of the rate constants, and were compared with those for the diffusive process. It was concluded that the rate process for the spin exchange in aprotic solvents is a diffusion-controlled one, and in protic solvents an encounter complex as intermediate is formed. The average reaction volume for the complex formation in protic solvents was estimated to be −3.6 cm<SUP>3</SUP> mol<SUP>−1</SUP>.
- 公益社団法人 日本化学会の論文
著者
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Sueishi Yoshimi
Department Of Chemistry Faculty Of Science Okayama University
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Kuwata Keiji
Department Of Chemistry Faculty Of Science Osaka University
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Nishimura Norio
Department Of Chemistry Faculty Of Science Okayama University
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Hirata Koichi
Department Of Gastrointestinal Surgery And Oncological Surgery Sapporo Medical University School Of
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Hirata Koichi
Department of Chemistry, Faculty of Science, Osaka University
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