Journal of Chemical Crystallography

, Volume 43, Issue 10, pp 517–522 | Cite as

First Organic–Inorganic Uranyl Chloroselenate: Synthesis, Crystal Structure and Spectroscopic Characteristics

  • O. S. Tyumentseva
  • V. V. Gurzhiy
  • S. V. Krivovichev
  • I. G. Tananaev
  • B. F. Myasoedov
Original Paper


Single crystals of the new uranyl selenate hydrate (C5H12NO)[(UO2)(SeO4)Cl(H2O)] (1) have been prepared by evaporation at room temperature from aqueous solution of uranyl nitrate, selenic acid, potassium hydroxide and choline chloride. The crystal structure of 1 has been solved by direct methods [monoclinic, P21/n, a = 10.745(4), b = 11.236(4), c = 12.477(4) Å, β = 114.580(5)°, V = 1,369.9(8) Å3, Z = 4] and refined to R 1 = 0.022 (wR 2 = 0.058) for 4,350 reflections with |Fo| ≥ 4σ F using least square techniques. The structure is based upon the [(UO2)(SeO4)Cl(H2O)] layers consisting of UO6Cl pentagonal bypyramids sharing corners with SeO4 tetrahedra. The presence of the Cl ions in the system leads to the formation of a mixed-ligand coordination of uranyl ions. The topology of the 2D layer in the structure of 1 is based upon 4- and 8-membered rings of polyhedra and is related to the one observed in the structure of apophyllite-group minerals.

Graphical Abstract

Single crystals of the new uranyl selenate chloride (C5H12NO)[(UO2)(SeO4)Cl(H2O)] have been prepared by evaporation at room temperature; the structure based upon 2D [(UO2)(SeO4)Cl(H2O)] units whereas uranyl ions are coordinated by both O atoms of selenate anions and Cl atoms and description of its unprecedented structural topology reported herein.


Uranyl selenates Single crystal X-ray diffraction Structural topology Oxohalides 



This work was supported by St. Petersburg State University (Internal Grant and RFBR (Grant 12-05-33097). XRD study was carried out in the X-ray Diffraction Centre of St. Petersburg State University.


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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • O. S. Tyumentseva
    • 1
  • V. V. Gurzhiy
    • 2
  • S. V. Krivovichev
    • 2
  • I. G. Tananaev
    • 1
  • B. F. Myasoedov
    • 1
  1. 1.Frumkin Institute of Physical Chemistry and ElectrochemistryMoscowRussia
  2. 2.Chair of Crystallography, Geological FacultySt. Petersburg State UniversitySt. PetersburgRussia

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