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首页> 外文期刊>Russian Journal of Physical Chemistry >Concentration dependence of the structure of aqueous solutions of samarium trichloride according to X-ray diffraction
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Concentration dependence of the structure of aqueous solutions of samarium trichloride according to X-ray diffraction

机译:X射线衍射对三氯化sa水溶液结构的浓度依赖性

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摘要

Aqueous solutions of samarium chloride in a wide range of concentration under ambient conditions are studied by X-ray diffraction analysis. The small-angle peaks in experimental scattering intensity curves are interpreted. It is shown that highly concentrated solutions are characterized by a unique structure that differs heavily from the structure of dilute systems. It is found that small-angle peaks also appear in the intensity curves of dilute solutions, indicating that the so-called long-range order is preserved in these solutions. It is revealed that the contributions to the total scattering pattern that govern the appearance of prepeaks are interionic interactions of different types (e.g., cation-cation, anion-cation, and anion-anion interactions) in concentrated systems and the distances between the cations in dilute solutions.
机译:通过X射线衍射分析研究了环境条件下浓度范围很广的氯化水溶液。解释了实验散射强度曲线中的小角度峰。结果表明,高度浓缩的溶液的特点是其独特的结构与稀释系统的结构有很大不同。发现在稀释溶液的强度曲线中也出现了小角度的峰,表明在这些溶液中保留了所谓的远距离有序。结果表明,对控制前峰出现的总散射图的贡献是浓缩系统中不同类型的离子间相互作用(例如阳离子-阳离子,阴离子-阳离子和阴离子-阴离子相互作用)以及阳离子之间的距离。稀溶液。

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