Phosphorous Acid and Urea: Valuable Sources of Phosphorus and Nitrogen in the Hydrothermal Synthesis of Ammonium-Thorium Phosphates
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- 作者：Miguel A. Salvadó ; Pilar Pertierra ; Anatoly I. Bortun ; Camino Trobajo ; José ; R. Garcí ; a
- 刊名：Inorganic Chemistry
- 出版年：2008
- 出版时间：August 18, 2008
- 年：2008
- 卷：47
- 期：16
- 页码：7207-7210
- 全文大小：273K
- 年卷期：v.47,no.16(August 18, 2008)
- ISSN：1520-510X
文摘
Microcrystals of the first ammonium-thorium phosphates, (NH4)2Th(PO4)2·H2O (tetragonal, I41/amd, a = 7.0192(4) Å, c = 17.9403(8) Å) and NH4Th2(PO4)3 (monoclinic, C2/c, a = 17.880(6) Å, b = 6.906(1) Å, c = 8.152(2) Å, β = 104.39(2)°) were hydrothermally obtained from a Th(NO3)4-CO(NH2)2-H3PO3-H2O system (T = 180 °C). In both cases, the structure consists of a three-dimensional framework with PO4 tetrahedra coordinated to Th atoms (ThOn polyhedra, where n = 8 or 9, for the tetragonal or monoclinic phase, respectively). The ammonium ions (and water molecules) are located in the tunnels.