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Mechanistic insight into catalytic oxidations of organic compounds by ruthenium(IV)-oxo complexes with pyridylamine ligands
http://hdl.handle.net/2241/119690
http://hdl.handle.net/2241/1196906290a24c-3845-4ffc-888c-84c85169ada2
名前 / ファイル | ライセンス | アクション |
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CS_3-12_Supple.pdf (9.7 MB)
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CS_3-12.pdf (1.8 MB)
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Item type | Journal Article(1) | |||||
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公開日 | 2013-09-11 | |||||
タイトル | ||||||
タイトル | Mechanistic insight into catalytic oxidations of organic compounds by ruthenium(IV)-oxo complexes with pyridylamine ligands | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
著者 |
Ohzu, Shingo
× Ohzu, Shingo× Ishizuka, Tomoya× Hirai, Yuichirou× Jiang, Hua× Sakaguchi, Miyuki× Ogura, Takashi× Fukuzumi, Shunichi× Kojima, Takahiko |
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著者別名 |
石塚, 智也
× 石塚, 智也× 小島, 隆彦 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | A series of Ru(IV)-oxo complexes (4–6) were synthesized from the corresponding Ru(II)-aqua complexes (1–3) and fully characterized by 1H NMR and resonance Raman spectroscopies, and ESI-MS spectrometry. Based on the diamagnetic character confirmed by the 1H NMR spectroscopy in D2O, the spin states of 5 and 6 were determined to be S = 0 in the d4 configuration, in sharp contrast to that of 4 being in the S = 1 spin state. The aqua-complexes 1–3 catalyzed oxidation of alcohols and olefins using (NH4)2[CeIV(NO3)6] (CAN) as an electron-transfer oxidant in acidic aqueous solutions. Comparison of the reactivity of electrochemically generated oxo-complexes (4–6) was made in the light of kinetic analyses for oxidation of 1-propanol and a water-soluble ethylbenzene derivative. The oxo complexes (4–6) exhibited no significant difference in the reactivity for the oxidation reactions, judging from the similar catalytic rates and the activation parameters. The slight difference observed in the reaction rates can be accounted for by the difference in the reduction potentials of the oxo-complexes, but the spin states of the oxo-complexes have hardly affected the reactivity. The activation parameters and the kinetic isotope effects (KIE) observed for the oxidation reactions of methanol indicate that the oxidation reactions of alcohols with the RuIV[double bond, length as m-dash]O complexes proceed via a concerted proton-coupled electron transfer mechanism. | |||||
書誌情報 |
Chemical science 巻 3, 号 12, p. 3421-3431, 発行日 2012-10 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2041-6520 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA12555653 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1039/C2SC21195E | |||||
権利 | ||||||
権利情報 | © The Royal Society of Chemistry 2012 | |||||
著者版フラグ | ||||||
値 | author | |||||
出版者 | ||||||
出版者 | Royal Society of Chemistry | |||||
URI | ||||||
識別子 | http://hdl.handle.net/2241/119690 | |||||
識別子タイプ | HDL |