Synthesis and X-ray diffraction study of new uranyl malonate and oxalate complexes with carbamide
- Authors: Medvedkov Y.A.1, Serezhkina L.B.1, Grigor’ev M.S.2, Serezhkin V.N.1
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Affiliations:
- Samara State University
- Frumkin Institute of Physical Chemistry and Electrochemistry
- Issue: Vol 61, No 3 (2016)
- Pages: 383-390
- Section: Structure of Organic Compounds
- URL: https://journals.rcsi.science/1063-7745/article/view/189972
- DOI: https://doi.org/10.1134/S1063774516030184
- ID: 189972
Cite item
Abstract
Two new malonate-containing uranyl complexes with carbamide of the formulas [UO2(C3H2O4)(Urea)2] (I) and [UO2(C3H2O4)(Urea)3] (II), where Urea is carbamide, and one uranyl oxalate complex of the formula [UO2(C2O4)(Urea)3] (III) were synthesized, and their crystals were studied by X-ray diffraction. The main structural units in crystals I are the electroneutral chains [UO2(C3H2O4)(Urea)2]∞ belonging to the crystal-chemical group AT11M21 (A = UO22+, T11 = C3H2O42-, M1 = Urea) of uranyl complexes. Crystals II and III are composed of the molecular complexes [UO2(L)(Urea)3], where L = C3H2O42- or C2O42-, belonging to the crystal-chemical group AB01M31 (A = UO22+, B01 = C3H2O42- or C2O42-, M1 = Urea). The characteristic features of the packing of the uranium-containing complexes are discussed in terms of molecular Voronoi–Dirichlet polyhedra. The effect of the Urea: U ratio on the structure of uranium-containing structural units is considered.
About the authors
Ya. A. Medvedkov
Samara State University
Email: Lserezh@samsu.ru
Russian Federation, ul. Akad. Pavlova 1, Samara, 443011
L. B. Serezhkina
Samara State University
Author for correspondence.
Email: Lserezh@samsu.ru
Russian Federation, ul. Akad. Pavlova 1, Samara, 443011
M. S. Grigor’ev
Frumkin Institute of Physical Chemistry and Electrochemistry
Email: Lserezh@samsu.ru
Russian Federation, Leninskii pr. 31, Moscow, 199071
V. N. Serezhkin
Samara State University
Email: Lserezh@samsu.ru
Russian Federation, ul. Akad. Pavlova 1, Samara, 443011