Comparative Structural Characteristic of Aqueous Lanthanide Chloride Solutions at 1 : 40 Molar Ratio from X-ray Diffraction Data |
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| Authors: | P R Smirnov O V Grechin |
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| Institution: | 1.Krestov Institute of Solution Chemistry,Russian Academy of Sciences,Ivanovo,Russia;2.Research Institute of Thermodynamics and Kinetics of Chemical Processes,Ivanovo State University of Chemistry and Technology,Ivanovo,Russia |
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| Abstract: | Aqueous lanthanide chloride solutions with 1 : 40 molar ratio have been studied by X-ray diffraction. Quantitative characteristics of the short-range environment of ions in solutions have been determined using model approach to analysis of experimental data. It has been confirmed that the number of molecules in the short-range environment decreases from nine to eight on passing from light to heavy cations. In so doing, three-caped trigonal prism coordination spheres of cations become two-caped one. Cations also form second coordination spheres composed of 8–10 solvent molecules. Noncontact ion associates form in all the systems. |
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