The kinetics of oxidation of L-lysine by diperiodatonickelate(IV) (DPN) in aqueous alkaline medium at a constant ionic strength of 0.60 mol dm^-3 has been studied spectrophotometrically. The reaction shows first order in diperiodatonickelate(IV) and less than unit order dependence each in lysine and OH^- ion concentrations. The addition of periodate retards the reaction, while the product nickel(II) do not show any significant effect on the reaction rate. An increase in ionic strength and decrease in dielectric constant of the medium decreases the rate. A mechanism based on experimental results is proposed. The constants involved in the mechanism are evaluated. The activation parameters with respect to slow step of the mechanism are computed and discussed.

中文翻译：

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碱性水介质中二铜酮镍酸酯（IV）氧化L-赖氨酸的动力学和机理研究

用分光光度法研究了在恒定的离子强度为0.60 mol dm ^-3的碱性水溶液中二戊酮钛酸酯（IV）（DPN）氧化L-赖氨酸的动力学。该反应的节目在diperiodatonickelate（IV）的一阶和小于单元顺序依赖性的每个赖氨酸和OH ^-离子浓度。高碘酸盐的添加延迟了反应，而产物镍（II）对反应速率没有显着影响。离子强度的增加和介质的介电常数的降低会降低该速率。提出了一种基于实验结果的机理。评估该机制中涉及的常数。计算并讨论了关于机构慢速步进的激活参数。