Published September 2017 | Version v1
Journal article

Structure of complexes of uranyl succinate with carbamide and dimethylurea

  • 1. Samara National Research University (Russian Federation)
  • 2. Russian Academy of Sciences, Frumkin Institute of Physical Chemistry and Electrochemistry (Russian Federation)

Description

Three new succinate-containing complexes of uranyl with carbamide (Urea) and N,N'-dimethylurea (s-Dmur) are synthesized and studied by IR spectroscopy and X-ray diffraction. Structures of the same type, [UO2(Urea)4(H2O)][(UO2)2(C4H4O4)3] · 3H2О and [UO2(Urea)4(H2O)][(UO2)2(C4H4O4)3] · 2Urea contain two sorts of uranium-containing complex groups, namely, mononuclear [UO2(Urea)4(H2O)]2+ cations and two-dimensional [(UO2)2(C4H4O4)3]2– anions described by crystal-chemical formulas A#041C#51 and A2Q302, respectively (A = UO22+, M1 = Urea or H2O, Q02 = C4H4O42-), and differ only in the nature of noncoordinated molecules—water and carbamide. The main structural groups of the [(UO2)2(C4H4O4)2(s-Dmur)3] crystals are [(UO2)2(C4H4O4)2(s-Dmur)3] chains belonging to the #0410#2Q202M31 (A = UO22+, Q02 = C4H4O42-, M1 = s-Dmur) crystal-chemical group. Specific features of intermolecular interactions in the crystal structures are revealed using the Voronoi–Dirichlet method of molecular polyhedra.

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Identifiers

Publishing Information

Journal Title
Crystallography Reports
Journal Volume
62
Journal Issue
5
Journal Page Range
p. 716-724
ISSN
1063-7745
CODEN
CYSTE3

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