X-ray diffraction study of Rb{sub 2}[(UO{sub 2}){sub 2}(CrO{sub 4}){sub 3}(H{sub 2}O){sub 2}] . 4H{sub 2}O
- Samara State University (Russian Federation)
- Russian Academy of Sciences, Nesmeyanov Institute of Organoelement Compounds (Russian Federation)
The compound Rb{sub 2}[(UO{sub 2}){sub 2}(CrO{sub 4}){sub 3}(H{sub 2}O){sub 2}] . 4H{sub 2}O was studied by X-ray diffraction. The crystals are monoclinic, a = 10.695(2) A, b = 14.684(3) A, c = 14.125(3) A, {beta} = 108.396(4){sup o}, sp. gr. P2{sub 1}/c, Z = 4, V = 2104.9(7) A{sup 3}, and R = 0.0491. The main structural units are layers consisting of [(UO{sub 2}){sub 2}(CrO{sub 4}){sub 3}(H{sub 2}O){sub 2}]{sup 2-} anions belonging to the crystal-chemical group A{sub 2}T{sub 2}{sup 3}B{sup 2}M{sub 2}{sup 1} (A = UL{sub 2}{sup 2+}, T{sup 3} and B{sup 2} are CrO{sub 4}{sup 2-}, and M{sup 1} is H{sub 2}O) of uranyl complexes. The uranium-containing layered groups are held together by electrostatic interactions with rubidium cations, as well as by hydrogen bonds with the participation of inner- and outer-sphere water molecules.
- OSTI ID:
- 22051186
- Journal Information:
- Crystallography Reports, Vol. 55, Issue 4; Other Information: Copyright (c) 2010 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7745
- Country of Publication:
- United States
- Language:
- English
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