Syntheses and structures of three f-element selenite/hydroselenite compounds
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113 (United States)
The selenite/hydroselenite compounds Ce(SeO{sub 3})(HSeO{sub 3}), Tb(SeO{sub 3})(HSeO{sub 3}).2H{sub 2}O, and Cs[U(SeO{sub 3})(HSeO{sub 3})].3H{sub 2}O were synthesized by hydrothermal means at 453 K from the reaction of CeO{sub 2} or Tb{sub 4}O{sub 7} or UO{sub 2} with SeO{sub 2} and CsCl (as a mineralizer). Ce(SeO{sub 3})(HSeO{sub 3}) crystallizes in the non-centrosymmetric orthorhombic space group Pca2{sub 1}. The structure comprises a two-dimensional network of interconnected CeO{sub 10} bicapped distorted square antiprisms and SeO{sub 3} trigonal pyramids. Tb(SeO{sub 3})(HSeO{sub 3}).2H{sub 2}O crystallizes in the non-centrosymmetric orthorhombic space group P2{sub 1}2{sub 1}2{sub 1}. The structure features a two-dimensional layer of interconnected TbO{sub 8} distorted square antiprisms and SeO{sub 3} trigonal pyramids. Cs[U(SeO{sub 3})(HSeO{sub 3})].3H{sub 2}O crystallizes in the centrosymmetric monoclinic space group P2{sub 1}/n. The structure consists of two-dimensional layers of interconnected UO{sub 7} pentagonal bipyramids and SeO{sub 3} trigonal pyramids. The layers in all three structures are held together by hydrogen-bonding networks. - Graphical abstract: Structure of Ce[U(SeO{sub 3})(HSeO{sub 3})].3H{sub 2}O (Cs, purple; U, black; Se, blue; O, red; O{sub w}, green; H, gray).
- OSTI ID:
- 21370435
- Journal Information:
- Journal of Solid State Chemistry, Vol. 182, Issue 6; Other Information: DOI: 10.1016/j.jssc.2009.03.016; PII: S0022-4596(09)00103-0; Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CERIUM OXIDES
CESIUM CHLORIDES
CESIUM COMPOUNDS
CHEMICAL BONDS
LAYERS
MONOCLINIC LATTICES
ORTHORHOMBIC LATTICES
SELENITES
SELENIUM OXIDES
SPACE GROUPS
SYNTHESIS
TERBIUM COMPOUNDS
TERBIUM OXIDES
URANIUM COMPOUNDS
URANIUM DIOXIDE
ACTINIDE COMPOUNDS
ALKALI METAL COMPOUNDS
CERIUM COMPOUNDS
CHALCOGENIDES
CHLORIDES
CHLORINE COMPOUNDS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
HALIDES
HALOGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
RARE EARTH COMPOUNDS
SELENIUM COMPOUNDS
SYMMETRY GROUPS
URANIUM OXIDES