New Polymorphic Structures of Uranyl Butyrate and Crotonate

Авторы: Pirozhkov Pavel A., Vologzhanina Anna V., Savchenkov Anton V.
Журнал: ChemistrySelect
Том: 9
Номер: 18
Год издания: 2024
DOI: 10.1002/slct.202401019
Аннотация: New polymorphs of diaquadicrotonato- anddiaquadibutyratodioxidouranium(VI) were synthesized. X-ray diffraction analysis at low and room temperatures revealed the monoclinic crystal system for both compounds at both room and low temperatures. New structures contain molecular complexes in which uranium atoms are coordinated by two bidentate carboxylate ions and two water molecules. The crystalstructures feature the same packing motif that constitutes layers formed by hydrogen bonds. IR spectroscopy uncovered differences in vibrations of carboxyl and uranyl groups. Voronoi-Dirichlet parameters of the synthesized compounds and some previously published uranyl carboxylates that havesimilar complex and crystal structures to the new ones were compared. The new structures demonstrate once again that the volume of Voronoi-Dirichlet polyhedron of the uranium atom in U sublattice depends on the nature of carboxylate ion alkylchain.
Добавил в систему: Вологжанина Анна Владимировна

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