Syntheses, Structures, and Comparisons of Thallium Uranium Phosphites, Mixed Phosphate-Phosphites, and Phosphate
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- 作者：Eric M. Villa ; Evgeny V. Alekseev ; Wulf Depmeier ; Thomas E. Albrecht-Schmitt
- 刊名：Crystal Growth & Design
- 出版年：2013
- 出版时间：April 3, 2013
- 年：2013
- 卷：13
- 期：4
- 页码：1721-1729
- 全文大小：525K
- 年卷期：v.13,no.4(April 3, 2013)
- ISSN：1528-7505
文摘
A new family of six thallium uranium phosphites and phosphates has been synthesized. Here there are three new thallium uranyl phosphites, Tl2[(UO2)(HPO3)(H2PO3)]21, Tl2[(UO2)2(HPO3)3]路H2O 2, and Tl6[(UO2)5(H2O)(HPO3)8]路2H2O 3, a uranyl phosphate-phosphite, Tl3[(UO2)2(H1.5PO4)(H0.5PO4)(H1.5PO3)2] 4, a mixed uranium(VI)鈥搖ranium(IV) phosphate-phosphite, Tl2[(UO2)2(UIV)(H2O)(PO4)2(HPO3)2] 5, and, finally, a thallium uranium(IV) phosphate, Tl2[UIV(PO4)2] 6, which were hydrothermally synthesized using thallium carbonate, uranyl nitrate, and H3PO3 as initial reagents. The above phases were all isolated from mixtures and were characterized by single-crystal X-ray diffraction and solid-state UV鈥搗is鈥揘IR spectroscopy. Compounds 1, 2, 3, and 5 are isotypic to known topologies. Herein, we investigate these six new thallium compounds and explore the effects of the thallium carbonate concentration and time on the reduction of uranium, via the phosphite ligand, within the crystalline products observed and also examine how these thallium species relate in terms of unit cells, symmetry, and bonding to known uranium phases.