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Electron spin resonance analysis of the oxidation reactions of nitrone type spin traps with gold(III) ion
http://hdl.handle.net/10458/1012
http://hdl.handle.net/10458/1012b8b6f318-6f1b-44a4-8f6e-1699304ace61
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
CanJChem-83-1178-2005.pdf (585.5 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2007-12-05 | |||||
| タイトル | ||||||
| タイトル | Electron spin resonance analysis of the oxidation reactions of nitrone type spin traps with gold(III) ion | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| キーワード | ESR, nitrone, spin traps, DMPO, DMPOX, gold(III) ion | |||||
| 資源タイプ | ||||||
| 資源タイプ | journal article | |||||
| 著者 |
Nakajima, Akira
× Nakajima, Akira× Ueda, Yuto× Endoh, Nobuyuki× Tajima, Kunihiko× Makino, Keisuke |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | When cyclic nitrones, such as 5,5-dimethyl-1-pyrroline-N-oxide （DMPO）, 4-phenyl-5,5-dimethyl-1-pyrroline-N-oxide （PDMPO）, and 3,3,5,5-tetramethyl-1-pyrroline-N-oxide （M4PO） were mixed with hydrogen tetrachloroaurate（III）, DMPOX （5,5-dimethyl-1-pyrrolid-2-one-N-oxyl）-type free radicals appeared with the precipitation of Au（0）. The reaction did not proceed with non-cyclic nitrones, such as N-tert-butyl-α-phenyl-nitrone （PBN） and α-（4-pyridyl-1-oxide）-N-tert-butyl-nitrone （POBN）. The order of the HAuCl4 decrease was DMPO > PDMPO > M4PO. The reaction was depressed by the addition of chloride or hydroxide ions. 1-Hydroxy-5,5-dimethyl-1-pyrrolid-2-one （HDMPN）, the precursor of DMPOX, was also oxidized to DMPOX by HAuCl4. Every step of gold reduction from Au（III） to Au（0） can be used for the oxidation of HDMPN to DMPOX. Based on these and previous results, the reaction was explained by the assumed scheme consisted of the ligand exchange interaction of AuCl4 – with >N+-O– in DMPO, the nucleophilic addition of water molecule to DMPO, the stepwise intra-molecular transfer of three electrons from DMPO to Au（III）, and the precipitation of Au（0）. |
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| 言語 | en | |||||
| 内容記述 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | Copyright notice:http://pubs.nrc-cnrc.gc.ca/eng/journals/copyright.html | |||||
| 言語 | en | |||||
| 書誌情報 |
en : Canadian journal of chemistry en : Journal canadien de chimie 巻 83, 号 8, p. 1178-1184, 発行日 2005-08 |
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| 出版者 | ||||||
| 出版者 | National Research Council of Canada | |||||
| 言語 | en | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 00084042 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA00597598 | |||||
| 著者版フラグ | ||||||
| 出版タイプ | AM | |||||
