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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Infrared Spectrum of Phosphoenol Pyruvate: Computational and Experimental Studies
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Infrared Spectrum of Phosphoenol Pyruvate: Computational and Experimental Studies

机译:丙酮酸磷酸烯醇酯的红外光谱:计算和实验研究

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摘要

The infrared spectrum of phosphoenol pyruvate (PEP) in aqueous solution was studied experimentally andtheoretically in its fully ionized, singly protonated and doubly protonated form. The density functional theorywith the B3LYP functional and with the 6-31G(d,p), 6-31++G(d,p), and 6-311++G(d,p) basis sets wereused in the theoretical study. The calculations with the two latter basis sets and the CPCM continuum modelfor water showed good agreement with the experiments except for vibrations assigned to hydroxyl groups.These needed to be modeled with explicit water molecules. The effects of deuteration and of ~(13)C_(2,3)labelingof PEP were reproduced by the calculations.
机译:理论和理论上研究了水溶液中的磷酸烯醇丙酮酸酯(PEP)的红外光谱,其形式为完全电离,单质子化和双质子化。在理论研究中使用了具有B3LYP泛函以及6-31G(d,p),6-31 ++ G(d,p)和6-311 ++ G(d,p)基组的密度泛函理论。后两个基础集和CPCM连续水模型的计算结果与实验吻合得很好,除了分配给羟基的振动外,还需要使用显式水分子进行建模。通过计算重现了氘化和〜(13)C_(2,3)标记的效果。

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