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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Palladium(II) Ion Mediated Disulfide/Thiolate Interconversion: Predicting the Disulfide Group State from First Principles
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Palladium(II) Ion Mediated Disulfide/Thiolate Interconversion: Predicting the Disulfide Group State from First Principles

机译:钯(II)离子介导的二硫化物/硫醇酸酯相互转化:预测第一原理中的二硫群状态

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摘要

Different reactivity of homologous disulfides toward Pd2+ was previously reported: stepwise complexation to Pd2+ for L-cystine and cystamine ligands, while for DL-homocystine and 3,3'-dithiodipropionic acid, disulfide's disproportionation toward thiolate and sulfinic acid complexes is observed. The disulfide/thiolate interconversion of four different disulfide ligands in the presence of nonredox metal cation Pd2+ in aqueous solution has been computationally investigated. We see this different reactivity in different capacities of considered homologous disulfides to stabilize forming S,S'-binuclear complexes, which are believed to be key intermediates toward interconversion products. We thus devise a theoretical model that rationalizes experimentally observed phenomenon of disulfides different reactivity toward nonredox transition metal cation Pd2+.
机译:先前报道了对PD2 +的同源二硫化的不同反应性:逐步络合L-胱氨酸和胱胺配体的PD2 +,而对于D1-同型胱氨酸和3,3'-二硫代噻吩酸,迄今为止朝向硫醇酸盐和硫酸酸配合物的歧化。 四种不同二硫化物配体在水溶液中的非重新氧化氧化金阳离子Pd2 +存在下的二硫键/硫醇酯互连已被计算研究。 我们在认为同源二硫化物中的不同容量中看到这种不同的反应性以稳定形成S,S'-双核复合物,其被认为是朝向互连产物的关键中间体。 因此,我们设计了一种理论模型,可理解实验观察到的二硫化氧化物不同反应性的现象,其对非重新氧化氧化金属阳离子Pd2 +。

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