V. N. Serezhkin, S. V. Kondrashkin, A. A. Gnedov, D. V. Pushkin, L. B. Serezhkina
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Conformations and Coordination Types of Adipate Ions in the Structures of f-Metal Complexes
139 crystallographically nonequivalent adipate ions exhibit eight topologically different types of coordination to f-metal atoms in the crystal structures. Unlike other aliphatic dicarboxylate ions, all types of coordination of adipate ions lead to the formation of only four-membered chelate rings. A new method for quantitatively assessing the conformation of chains containing six carbon atoms linked by single C–C bonds was tested using adipate ions as an example. In known structures, adipate ions realize six different conformations, each of which corresponds to a certain “double” symbol: φ3/φ3, φ1/φ3, φ1/φ1, φ2/φ3, φ1/φ2, or φ2/φ2. Most often (≈97% of cases), energetically more favorable combinations of odd transoid φ3 and/or skewed φ1 conformations are realized.
期刊介绍：
Radiochemistry is a journal that covers the theoretical and applied aspects of radiochemistry, including basic nuclear physical properties of radionuclides; chemistry of radioactive elements and their compounds; the occurrence and behavior of natural and artificial radionuclides in the environment; nuclear fuel cycle; radiochemical analysis methods and devices; production and isolation of radionuclides, synthesis of labeled compounds, new applications of radioactive tracers; radiochemical aspects of nuclear medicine; radiation chemistry and after-effects of nuclear transformations.
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