Understanding the nitrate coordination to Eu3+ ions in solution by potential of mean force calculations

文献信息

发布日期 2011-02-15

DOI 10.1039/C0CP02535F

影响因子 3.676

作者

Magali Duvail, Philippe Guilbaud

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摘要

Coordination of nitrate anions with lanthanoid cations (Ln3+) in water, methanol and octanol-1 has been studied by means of molecular dynamics simulations with explicit polarization. Potential of mean force (PMF) profiles have been calculated for a mono-complex of lanthanoid nitrate (Ln(NO3)2+) in these solvents using umbrella-sampling molecular dynamics. In pure water, no difference in the nitrato coordination to lanthanoids (Nd3+, Eu3+ and Dy3+) is observed, i.e. the nitrate anion prefers the monodentate coordination, which promotes the salt dissociation. Then, the influence of the nature of the solvating molecules on the nitrato coordination to Eu3+ has been investigated. PMF profiles point out that both monodenate and bidentate coordinations are stable in neat methanol, while in neat octanol, only the bidentate one is. MD simulations of Eu(NO3)3 in water–octanol mixtures with different concentrations of water have been then performed and confirm the importance of the water molecules' presence on the nitrate ion's coordination mode.

期刊推荐

Journal of Physics and Chemistry of Solids

Fibre Chemistry

Journal of Medicinal Chemistry

Helvetica Chimica Acta

Russian Chemical Reviews

Proceedings of the National Academy of Sciences of the United States of America

Israel Journal of Chemistry

Journal of Heterocyclic Chemistry

Journal of Organometallic Chemistry

Organic Preparations and Procedures International

来源期刊

Physical Chemistry Chemical Physics

CiteScore: 5.5

自引率: 10.3%

年发文量: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

Understanding the nitrate coordination to Eu3+ ions in solution by potential of mean force calculations

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Physical Chemistry Chemical Physics

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