11/22/2023 0 Comments Zhur. strukt. khim.Thermodynamic values are recommended for specific compounds and aqueous ions when reliable experimental data are available. The aqueous species considered include those in both noncomplexing media (pertechnetates, technetates, aquo-ions, and hydrolyzed cations) and complexing media (halides, sulfates, and phosphates). Compounds considered include oxides, hydroxides, hydrates oxides, halides, oxyhalides, double halides, and sulfides. Major emphasis is given to systems with potential geochemical applications, especially the geochemistry of radioactive waste disposal. « lessĬhemical and thermodynamic data for Technetium (Tc) and some of its inorganic compounds and aqueous species are reviewed here. The basic assumption is that the structures of these lithium complexes in the solid state resemble their structures in solution, and that similar structure-selectivity relationships exist, at least to some extent, in both media. The approach the authors chose for this review is a structural one, centered on the examination of the three-dimensional crystal structures of lithium salts and complexes. The compounds included in the review are listed by formula and abbreviation in Charts 1-18. Appropriate examples taken from the tables of data are used to illustrate the text. In addition, discussion is included of lithium selective ionophores and of the involvement of Li in biological cycles. The authors have attempted in the text to draw the reader's attention to the various parameters involved in lithium-ligand interaction such as ligand coordination more » sites, ligand conformation changes, stereochemical arrangement of ligand binding sites, counterion effects, and solvent effects. The data included in the review extend from the earliest publications through February 1990. In the present review article, a tabulation is given, based on X-ray crystallographic data, of the bond lengths, geometry, coordination numbers, and solvent of crystallization of Li complexes. This growing interest in lithium is mainly due to the actual and potential applications of Li in science, medicine, and technology. There has been much recent interest in lithium and lithium ionophores.
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