Optimum complexation of uranyl with amidoxime in aqueous solution under different pH levels: density functional theory calculations

Optimum complexation of uranyl with amidoxime in aqueous solution under different pH levels: density functional theory calculations
复制标题

不同pH值下铀酰与偕胺肟在水溶液中的最佳络合:密度泛函理论计算

DOI:
10.1080/00268976.2014.993732
复制
发表时间:
2015-01
期刊:
影响因子:
1.7
通讯作者:
Wu, Guozhong
Wu, Guozhong
中科院分区:
化学4区
文献类型:
--
作者:
Wang, Yaxing;Li, Cheng;Huai, Ping;Wu, Guozhong

文献摘要

参考文献

被引文献

相似文献

本研究旨在用密度泛函理论方法研究不同pH条件下铀酰与胺肟在水溶液中的络合作用。研究了不同络合反应的几何构型、相对稳定性和吉布斯自由能的变化。通过向铀酰的赤道面上逐渐加入胺肟酸根离子来了解络合过程。我们通过改变伴随在铀酰赤道平面上的−和H2O配体的数目来模拟pH的影响。ŋ-2结合基序是最有利的形式,与铀酰/氨基肟酸的比例和pH水平无关。与低pH和高pH条件相比,中性pH条件更有利于铀酰与胺肟的络合反应。
This study aims to understand the complexation of uranyl with amidoxime in aqueous solution under different pH levels using density functional theory calculations. The geometries, relative stabilities of complexes, and changes in Gibbs free energies for different complexing reactions were investigated. Amidoximate ions were gradually added to the equatorial plane of uranyl to understand the complexation process. We modelled the effect of pH by varying the number of OH− and H2O ligands accompanying amidoximate ions in the equatorial plane of uranyl. The ŋ2 binding motif was the most favourable form, regardless of the uranyl/amidoximate ratio and the pH level. Compared with low and high pH, neutral pH condition was more beneficial to the complexation of uranyl with amidoxime.
DOI: 10.1016/j.reactfunctpolym.2005.02.015
发表时间: 2005-05
影响因子: 5.1
作者:
A. Zhang;G. Uchiyama;T. Asakura
通讯作者: A. Zhang;G. Uchiyama;T. Asakura
DOI: 10.1299/jsmemag.81.714_475
发表时间: 1978
期刊: Journal of the Society of Mechanical Engineers, Japan
影响因子: --
作者:
H. Miyazaki
通讯作者: H. Miyazaki
DOI: 10.1039/p29930000799
发表时间: 1993-05-01
期刊: JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2
影响因子: --
作者:
KLAMT, A;SCHUURMANN, G
通讯作者: SCHUURMANN, G
DOI: 10.1021/ic300062s
发表时间: 2012-02
影响因子: 4.6
作者:
S. Vuković;L. Watson;S. Kang;R. Custelcean;B. Hay
通讯作者: S. Vuković;L. Watson;S. Kang;R. Custelcean;B. Hay
DOI: 10.1021/ic048567u
发表时间: 2005-03
影响因子: 4.6
作者:
J. L. Sonnenberg;P. Hay;R. L. Martin;B. Bursten
通讯作者: J. L. Sonnenberg;P. Hay;R. L. Martin;B. Bursten