Knowledge Management System Of Qinghai Institute of Salt Lakes,CAS
| Structure of Aqueous RbCl and CsCl Solutions Using X-Ray Scattering and Empirical Potential Structure Refinement Modelling | |
Zhou Yongquan ; Soga, Yoshie; Yamaguchi, Toshio; Fang Yan; Fang Chunhui
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| 第一作者 | Zhou Yongquan |
| 2018 | |
| 发表期刊 | ACTA PHYSICO-CHIMICA SINICA
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| ISSN | 1000-6818 |
| 卷号 | 34期号:5页码:483-491 |
| 关键词 | Rbcl Cscl Solution Structure X-ray Scattering Epsr |
| 摘要 | X-ray scattering measurements were performed on 1.0 mol.dm(-3) RbCl and CsCl aqueous solutions. The X-ray structure factors were subjected to empirical potential structure refinement to extract detailed structural information on hydrated Cl-, Rb+, Cs+, and ion association, as well as bulk water, in terms of the individual site-site pair correlation functions, coordination number distributions, and spatial density functions (three-dimensional structure). Cl- is found to have a relatively stable six-fold coordination of water molecules with a Cl--H2O distance of 0.321 nm, and without a significant cation effect on its local structure. Rb+ is surrounded on an average by 7.3 +/- 1.4 water molecules with a Rb+-H2O distance of 0.297 nm, whereas 8.4 +/- 1.6 water molecules hydrate Cs+ at a Cs+-H2O distance of 0.312 nm. It is likely that Rb+ has a stronger hydration shell than Cs+, as evidenced by the presence of the second hydration shell of the former. Contact ion-pairs are partially formed in both solutions and characterized by the Rb+-Cl- and Cs+-Cl- distances of 0.324 nm and 0.336 nm. The solvent-separated ion pairs for both ions are discernible at around 0.6 nm. Rb+ has a stronger electrostatic interaction and hence a relatively stronger ion association with Cl- than Cs+. |
| DOI | 10.3866/PKU.WHXB201709111 |
| 语种 | 英语 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.isl.ac.cn/handle/363002/6432 |
| 专题 | 青海盐湖研究所知识仓储 盐湖资源与化学实验室 |
| 推荐引用方式 GB/T 7714 | Zhou Yongquan,Soga, Yoshie,Yamaguchi, Toshio,et al. Structure of Aqueous RbCl and CsCl Solutions Using X-Ray Scattering and Empirical Potential Structure Refinement Modelling[J]. ACTA PHYSICO-CHIMICA SINICA,2018,34(5):483-491. |
| APA | Zhou Yongquan,Soga, Yoshie,Yamaguchi, Toshio,Fang Yan,&Fang Chunhui.(2018).Structure of Aqueous RbCl and CsCl Solutions Using X-Ray Scattering and Empirical Potential Structure Refinement Modelling.ACTA PHYSICO-CHIMICA SINICA,34(5),483-491. |
| MLA | Zhou Yongquan,et al."Structure of Aqueous RbCl and CsCl Solutions Using X-Ray Scattering and Empirical Potential Structure Refinement Modelling".ACTA PHYSICO-CHIMICA SINICA 34.5(2018):483-491. |
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| Structure of Aqueous（2130KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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