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Issue 6, 2018
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Crystal structures of uranyl complexes with isobutyrate and isovalerate anions

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Abstract

Single crystals of Na[(UO2)(i-C3H7COO)3]·0.7H2O (I), Cs[(UO2)(i-C3H7COO)3] (II) and (NH4)[(UO2)(i-C4H9COO)3] (III) were obtained via isothermal evaporation and their structures were solved using X-ray diffraction techniques. Even though the ligands are branched, bulky and spatial, many carbon and hydrogen atoms are still disordered in these crystal structures at low temperature. A new type of Na coordination is observed for the first time for this family of compounds, proposing high sensitivity of compound I to humidity. Depolymerization of the metal–oxygen frameworks for the new compounds is compared with the known ones. Coordination sequences of sodium/cesium and uranyl complexes with aliphatic monocarboxylate ions are calculated to show different crystal-chemical function of crystallographically independent atoms. As there are analogous compounds to the title ones with straight-chain ligands, such groups of similar compounds with single varying parameters are very advantageous for establishing correlations between composition and crystal structure.

Graphical abstract: Crystal structures of uranyl complexes with isobutyrate and isovalerate anions

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Publication details

The article was received on 27 Oct 2017, accepted on 25 Dec 2017 and first published on 16 Jan 2018


Article type: Paper
DOI: 10.1039/C7DT04042C
Citation: Dalton Trans., 2018,47, 1849-1856
  • Open access: Creative Commons BY-NC license
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    Crystal structures of uranyl complexes with isobutyrate and isovalerate anions

    A. V. Savchenkov, A. V. Vologzhanina, A. O. Dmitrienko, Y. V. Zubavichus, D. V. Pushkin, L. B. Serezhkina and V. N. Serezhkin, Dalton Trans., 2018, 47, 1849
    DOI: 10.1039/C7DT04042C

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