首页> 外文会议>Fifth International Manuel M.Baizer Symposium in Honor of Professor Jean Michel Saveant at the 201st Meeting of the Electrochemical Society Centennial Meeting May 12-17, 2002 Philadelphia, PA, USA >ELECTROREDUCTION OF METHYL AZINYL KETOXIMES AND THEIR Ni(Ⅱ), Cu(Ⅱ) AND Zn(Ⅱ) COMPLEXES ON MERCURY - CORRELATION WITH THEIR HYDROLYTIC ACTIVITY
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ELECTROREDUCTION OF METHYL AZINYL KETOXIMES AND THEIR Ni(Ⅱ), Cu(Ⅱ) AND Zn(Ⅱ) COMPLEXES ON MERCURY - CORRELATION WITH THEIR HYDROLYTIC ACTIVITY

机译:甲基叠氮基酮肟及其镍(Ⅱ),铜(Ⅱ)和锌(Ⅱ)配合物的电还原及其与水解活性的关系

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摘要

Ketoximes and their metal chelate complexes are both active as catalysts in hydrolysis of esters. Electroreduction of five azinylmethylketoximes Ⅰ-Ⅴ and their Ni(Ⅱ), Cu(Ⅱ) and Zn(Ⅱ) complexes was investigated polarographically and correlated with acidity of hydroxyimino group, nucleophilicity of dissociated oximate anion and with hydrolytic activity towards model substrate (p-nitrophenylacetate). Three different types of reduction of chelates were observed and their influence on the catalytic activity discussed.
机译:酮肟及其金属螯合物均在酯水解中具有催化活性。极谱法研究了五种氮杂基甲基酮肟肟Ⅰ-Ⅴ及其Ni(Ⅱ),Cu(Ⅱ)和Zn(Ⅱ)配合物的电还原,并与羟基亚氨基的酸度,离解的肟酸阴离子的亲核性以及对模型底物的水解活性有关(p-硝基苯乙酸盐)。观察到三种不同类型的螯合物还原,并讨论了它们对催化活性的影响。

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