SYNTHESIS AND STRUCTURES OF NEW DISULFATOURANYLATES

V. N. Serezhkin; Сережкин В. Н.; M. S. Grigoriev; Григорьев М. С.; D. S. Mitina; Митина Д. С.; L. B. Serezhkina; Сережкина Л. Б.

doi:10.31857/S0023476123600258

SYNTHESIS AND STRUCTURES OF NEW DISULFATOURANYLATES

Authors: Serezhkin V.N.¹, Grigoriev M.S.², Mitina D.S.³, Serezhkina L.B.¹
Affiliations:
1. Samara National Research University named after Academician S.P. Korolev, Samara, Russia
2. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences
3. Samara National Research University, Samara, 443011 Russia
Issue: Vol 68, No 4 (2023)
Pages: 588-593
Section: STRUCTURE OF ORGANIC COMPOUNDS
URL: https://rjmseer.com/0023-4761/article/view/673399
DOI: https://doi.org/10.31857/S0023476123600258
EDN: https://elibrary.ru/HZMMNJ
ID: 673399

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Abstract

Two new disulfatouranylates, Rb2[UO2(SO4)2(H2O)]⋅1.75H2O (I) and (N2H5)2[UO2(SO4)2(H2O)] (II), were synthesized and their structures were determined by single-crystal X-ray diffraction. In structures I and II, each uranyl ion is coordinated in the equatorial plane by four bidentate-bridging sulfate groups and one water molecule to form pentagonal-bipyramidal complexes with the crystal-chemical formula АВ₂² М1 (A =UO₂²⁺, B² =SO₄^2- , M1 = H2O). It was found that, while having the same composition [UO2(SO4)2(H2O)]^2–, the uranium-containing structural units are geometric isomers, which have a chain and layered structure in I and II, respectively.

Keywords

SYNTHESIS AND STRUCTURES, NEW DISULFATOURANYLATES

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