The Reduction Reactions of Catechol Derivatives by N- Methylpyrazinium Complex of Pentaammineruthenium(III)

碩士 === 東海大學 === 化學系 === 95 === The oxidation of ascorbic acid and a series of catechols (hydroquinones) by [RuIII(NH3)5pzCH3]4+ complexes undergoes an outer-sphere electron transfer mechanism. The kinetic studies of the reaction at [H+] = 0.01 – 0.1M specific rate constants of reaction at k0 = (4.9±...

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Main Authors:	Yu Yi Chen, 陳愉宜
Other Authors:	Andrew Yeh
Format:	Others
Language:	zh-TW
Published:	2006
Online Access:	http://ndltd.ncl.edu.tw/handle/44222727549784040386

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record_format	oai_dc
spelling	ndltd-TW-095THU000650022015-10-13T16:32:16Z http://ndltd.ncl.edu.tw/handle/44222727549784040386 The Reduction Reactions of Catechol Derivatives by N- Methylpyrazinium Complex of Pentaammineruthenium(III) 五氨釕(III)N-甲基吡嗪錯合物與鄰苯二酚衍生物之還原反應動力學探討 Yu Yi Chen 陳愉宜碩士東海大學化學系 95 The oxidation of ascorbic acid and a series of catechols (hydroquinones) by [RuIII(NH3)5pzCH3]4+ complexes undergoes an outer-sphere electron transfer mechanism. The kinetic studies of the reaction at [H+] = 0.01 – 0.1M specific rate constants of reaction at k0 = (4.9±0.3) × 102 (ascorbic acid)，(5.88± 0.04) × 102 (pyrocatechol)，(6.31± 0.03) × 102 (catechin) ; k1 = (2.78± 0.01) × 107 (ascorbic acid)，(1.32± 0.04)× 1010 (pyrocatechol)，(1.01± 0.01) × 107 (4-nitrocatechol)，(4.68± 0.04) × 109 (catechin), respectively at μ = 1 M HClO4 / LiClO4 and T = 25°C. The reactivities of the catechols were found to be greater than that of the ascorbic acid after the correction of the specific rate constants by the contribution of equilibrium barrier. This implies that the self-exchange rate constants of the catechols are grater than that of the ascorbic acid according to Marcus theory predictive. Andrew Yeh 葉玉堂 2006 學位論文 ; thesis 67 zh-TW
collection	NDLTD
language	zh-TW
format	Others
sources	NDLTD
description	碩士 === 東海大學 === 化學系 === 95 === The oxidation of ascorbic acid and a series of catechols (hydroquinones) by [RuIII(NH3)5pzCH3]4+ complexes undergoes an outer-sphere electron transfer mechanism. The kinetic studies of the reaction at [H+] = 0.01 – 0.1M specific rate constants of reaction at k0 = (4.9±0.3) × 102 (ascorbic acid)，(5.88± 0.04) × 102 (pyrocatechol)，(6.31± 0.03) × 102 (catechin) ; k1 = (2.78± 0.01) × 107 (ascorbic acid)，(1.32± 0.04)× 1010 (pyrocatechol)，(1.01± 0.01) × 107 (4-nitrocatechol)，(4.68± 0.04) × 109 (catechin), respectively at μ = 1 M HClO4 / LiClO4 and T = 25°C. The reactivities of the catechols were found to be greater than that of the ascorbic acid after the correction of the specific rate constants by the contribution of equilibrium barrier. This implies that the self-exchange rate constants of the catechols are grater than that of the ascorbic acid according to Marcus theory predictive.
author2	Andrew Yeh
author_facet	Andrew Yeh Yu Yi Chen 陳愉宜
author	Yu Yi Chen 陳愉宜
spellingShingle	Yu Yi Chen 陳愉宜 The Reduction Reactions of Catechol Derivatives by N- Methylpyrazinium Complex of Pentaammineruthenium(III)
author_sort	Yu Yi Chen
title	The Reduction Reactions of Catechol Derivatives by N- Methylpyrazinium Complex of Pentaammineruthenium(III)
title_short	The Reduction Reactions of Catechol Derivatives by N- Methylpyrazinium Complex of Pentaammineruthenium(III)
title_full	The Reduction Reactions of Catechol Derivatives by N- Methylpyrazinium Complex of Pentaammineruthenium(III)
title_fullStr	The Reduction Reactions of Catechol Derivatives by N- Methylpyrazinium Complex of Pentaammineruthenium(III)
title_full_unstemmed	The Reduction Reactions of Catechol Derivatives by N- Methylpyrazinium Complex of Pentaammineruthenium(III)
title_sort	reduction reactions of catechol derivatives by n- methylpyrazinium complex of pentaammineruthenium(iii)
publishDate	2006
url	http://ndltd.ncl.edu.tw/handle/44222727549784040386
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The Reduction Reactions of Catechol Derivatives by N- Methylpyrazinium Complex of Pentaammineruthenium(III)

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