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Syntheses, structures, and IR spectroscopic characterization of new uranyl sulfate/selenate 1D-chain, 2D-sheet and 3D-framework

2010; De Gruyter; Volume: 225; Issue: 6 Linguagem: Inglês

10.1524/zkri.2010.1228

2196-7105

Jie Ling, Ginger E. Sigmon, Matthew D. Ward, N. Roback, Peter C. Burns,

Radioactivity and Radon Measurements

Abstract Three uranyl sulfates, (C 6 H 20 N 4 )[(UO 2 ) 2 (SO 4 ) 4 · (H 2 O) 2 ](H 2 O) 6 (TETAUS), (C 15 H 14 N 3 )[(UO 2 )(SO 4 ) 2 ](NO 3 ) · (H 2 O) 2 (TPUS), and K 2 [(UO 2 )(SO 4 ) 2 (H 2 O)] · H 2 O (KUS), and two uranyl selenates, K(H 3 O)[(UO 2 ) 2 (SeO 4 ) 3 · (H 2 O)](H 2 O) 6 (KUSe) and (H 3 O) 2 [(UO 2 ) 2 (SeO 4 ) 3 · (H 2 O)] (USe), were synthesized by slow evaporation of aqueous solutions at room temperature. TETAUS crystallizes in space group P -1, a = 6.7186(5) Å, b = 9.2625(7) Å, c = 13.1078(9) Å, α = 72.337(2)°, β = 89.198(2)°, γ = 70.037(1)°, V = 726.89(9) Å 3 , Z = 1. TPUS is triclinic, P -1, a = 6.9732(7) Å, b = 13.569(1) Å, c = 13.641(1) Å, α = 111.809(2)°, β = 102.386(2)°, γ = 93.833(2)°, V = 1150.0(2) Å 3 , Z = 2. KUS is orthorhombic, Cmca , a = 12.171(2) Å, b = 16.689(3) Å, c = 10.997(2) Å, V = 2233.8(6) Å 3 , Z = 8. These uranyl sulfates are built from infinite one-dimensional uranyl sulfate chains with different topologies. KUSe is monoclinic, P 2 1 /n, a = 14.715(1) Å, b = 10.1557(7) Å, c = 15.833(1) Å, β = 114.415(1)°, V = 2154.5(3) Å 3 , Z = 4. Its structure is based on a two-dimensional uranyl selenate sheet. USe crystallizes in space group P 2 1 /c, a = 10.6124(2) Å, b = 14.7717(3) Å, c = 13.7139(3) Å, β = 96.989(1)°, V = 2133.86(8) Å 3 , Z = 4, with a complex three-dimensional uranyl selenate framework containing channels extending in three directions.