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CeF4 Complexes in Organic Solvents

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Abstract

The first complexes of cerium tetrafluoride in solutions have been studied by 19F NMR and IR spectroscopy. The temperature dependence of the 19F NMR spectra has been explored, and conclusion has been made that dynamic equilibrium between the molecular adduct and singly charged ionic forms, including geometric isomers, exists in solution. The statistical probability for the formation of [CeF4(dmso)4] stereoisomers of square antiprism configuration has been calculated, and their assignment to possible stereoisomers have been made on the basis of relative intensities of the 19F NMR signals. Quantum-chemical calculations of the structure of one of the possible isomers have been performed for the [CeF4(dmso)4] molecular adduct, [CeF3(dmso)5]+ cation, and [CeF5(dmso)3]– anion to show their thermodynamic stability.

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Funding

This work was performed in the framework of the State Contract for the Kurnakov Institute of General and Inorganic Chemistry, RAS, no. 01201353365.

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Authors and Affiliations

  1. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991, Moscow, Russia

    E. G. Il’in, A. S. Parshakov, V. G. Yarzhemsky, E. A. Ugolkova, L. V. Goyeva & V. I. Privalov

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  1. E. G. Il’in
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  2. A. S. Parshakov
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  3. V. G. Yarzhemsky
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  4. E. A. Ugolkova
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  5. L. V. Goyeva
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  6. V. I. Privalov
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Correspondence to E. G. Il’in.

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Translated by I. Kudryavtsev

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Il’in, E.G., Parshakov, A.S., Yarzhemsky, V.G. et al. CeF4 Complexes in Organic Solvents. Dokl Phys Chem 488, 120–124 (2019). https://doi.org/10.1134/S0012501619090033

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  • DOI: https://doi.org/10.1134/S0012501619090033

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