1. Synthesis, characterization and morphotropic transitions in a family of M[(UO2)(CH3COO)3](H2O)n (M=Na, K, Rb, Cs; n=0–1.0) compounds.
- Author
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Kornyakov, Ilya V., Kalashnikova, Sophia A., Gurzhiy, Vladislav V., Britvin, Sergey N., Belova, Elena V., and Krivovichev, Sergey V.
- Subjects
ALKALI metals ,URANYL compounds ,ANALYTICAL chemistry ,CRYSTAL structure ,X-ray diffraction ,SPACE groups - Abstract
Experimental investigations of crystallization in a family of uranyl triacetate compounds with Na, K, Rb and Cs were performed. The crystal structures of two novel Cs- and Rb-bearing tri(acetato)uranylates were solved, and the content of H
2 O molecules in the crystal structure of K-bearing uranyl triacetate was refined. Synthesized compounds were analyzed using IR spectroscopy and single-crystal X-ray diffraction. Crystal chemical analysis of the M[(UO2 )(CH3 COO)3 ](H2 O)n family (M = Na, K, Rb, Cs; n = 0–1.0) reveals the sequence of structural transformations depending on the size of alkali cation resulting in the symmetry reduction from cubic P 21 3 (for Na), through tetragonal I 41 /a (for K and Rb) to triclinic P 1̅ space groups (for Cs), which is in accordance with the principle of morphotropism, suggested by Paul von Groth, founder of the Zeitschrift für Krystallographie journal, in 1870. [ABSTRACT FROM AUTHOR]- Published
- 2020
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