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Balboni E, Burns PC. Hydrothermal syntheses and characterization of uranyl tungstates with electro-neutral structural units. Z KRIST-CRYST MATER 2015. [DOI: 10.1515/zkri-2014-1799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Two uranyl tungstates, (UO2)(W2O7)(H2O)3 (1) and (UO2)3(W2O8)F2(H2O)3 (2), were synthesized under hydrothermal conditions at 220°C and were structurally, chemically, and spectroscopically characterized. 1 Crystallizes in space group Pbcm, a = 6.673(5) Å, b = 12.601(11) Å, c = 11.552 Å; 2 is in C2/m, a = 13.648(1) Å, b = 16.852(1) Å, c = 9.832(1) Å, β = 125.980(1)°. In 1 the U(VI) cations are present as (UO2)2+ uranyl ions that are coordinated by five oxygen atoms to give pentagonal bipyramids. These share two edges with two tungstate octahedra and single vertices with four additional octahedra, resulting in a sheet with the iriginite-type anion topology. Only water molecules are located in the interlayer. The structural units of 2 consist of (UO2)2+ uranyl oxy-fluoride pentagonal bipyramids present as either [UO2F2O3]–6 or [UO2FO4]–5 , and strongly distorted tungstate octahedra. The linkage of uranyl pentagonal bipyramids and tungstate octahedra gives a unique sheet anion topology consisting of pentagons, squares and triangles. In 2, the uranyl tungstates sheets are connected into a novel electro-neutral three-dimensional framework through dimers of uranyl pentagonal bipyramids. These dimers connecting the sheets share an edge defined by F anions. 2 is the first example of a uranyl tungstate oxy-fluoride, and 1 and 2 are rare examples of uranyl compounds containing electro-neutral structural units.
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Xiao B, Gesing TM, Robben L, Bosbach D, Alekseev EV. Dinuclear Face-Sharing Bi-octahedral Tungsten(VI) Core and Unusual Thermal Behavior in Complex Th Tungstates. Chemistry 2015; 21:7746-54. [DOI: 10.1002/chem.201500500] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Indexed: 11/09/2022]
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Ling J, Hobbs F, Prendergast S, Adelani PO, Babo JM, Qiu J, Weng Z, Burns PC. Hybrid Uranium–Transition-Metal Oxide Cage Clusters. Inorg Chem 2014; 53:12877-84. [DOI: 10.1021/ic5018449] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jie Ling
- Department of Civil
and Environmental Engineering and Earth Sciences, and ‡Department of
Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Franklin Hobbs
- Department of Civil
and Environmental Engineering and Earth Sciences, and ‡Department of
Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Steven Prendergast
- Department of Civil
and Environmental Engineering and Earth Sciences, and ‡Department of
Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Pius O. Adelani
- Department of Civil
and Environmental Engineering and Earth Sciences, and ‡Department of
Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Jean-Marie Babo
- Department of Civil
and Environmental Engineering and Earth Sciences, and ‡Department of
Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Jie Qiu
- Department of Civil
and Environmental Engineering and Earth Sciences, and ‡Department of
Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Zhehui Weng
- Department of Civil
and Environmental Engineering and Earth Sciences, and ‡Department of
Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Peter C. Burns
- Department of Civil
and Environmental Engineering and Earth Sciences, and ‡Department of
Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
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Balboni E, Burns PC. Cation–cation interactions and cation exchange in a series of isostructural framework uranyl tungstates. J SOLID STATE CHEM 2014. [DOI: 10.1016/j.jssc.2014.02.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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