Modeling of radionuclides in natural fluids:: synthesis and characterization of the Na4(UO2)2(OH)4(C2O4)2 complex

被引：9

作者：

Curini, R

Tentolini, U

Materazzi, S

Vasca, E

Caruso, T

Fontanella, C

Palladino, G

机构：

[1] Univ Roma La Sapienza, Dept Chem, I-00185 Rome, Italy

[2] Univ Salerno, Dept Chem, I-84081 Baronissi, Salerno, Italy

来源：

THERMOCHIMICA ACTA | 2002年 / 387卷 / 01期

关键词：

uranyl; oxalate; complexes; coupled TG-FTIR; EGA; potentiometry;

D O I：

10.1016/S0040-6031(01)00823-1

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The coordination chemistry of dioxouranium(VI) with organic ligands may represent an useful model to describe the migration of radionuclides in natural fluids. A new dioxouranium(VI) ternary complex of formula Na-4(UO2)(2)(OH)(4)(C2O4)(2) was precipitated at pH congruent to 8. It was characterized by elemental analysis, ICP and IR spectroscopy, thermogravimetry (TG) and coupled TG-IR evolved gas analysis. Potentiometric measurements in the solution suggest that the equilibrium shifts from the prevalence of the (UO2)(2)(OH)(2)(C2O4)(4)(6-) complex to the [(UO2)(2)(OH)(4)(C2O4)(2)](4-) complex before the formation of a solid phase. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：17 / 21

页数：5

共 50 条

[21] Crystal structure and IR spectroscopic study of (CN3H6)2[(UO2)2(C2O4)(CH3COO)4]
Serezhkina, L. B.
Peresypkina, E. V.
Neklyudova, N. A.
Virovets, A. V.
Serezhkin, V. N.
CRYSTALLOGRAPHY REPORTS, 2013, 58 (02) : 275 - 279
[22] Synthesis and X-ray Crystallographic Study of [(UO2)2(C3H2O4)(Cl)2(C4H9NO)4]
Medvedkov, Ya A.
Grigor'ev, M. S.
Serezhkina, L. B.
Pushkin, D. V.
Serezhkin, V. N.
RUSSIAN JOURNAL OF INORGANIC CHEMISTRY, 2018, 63 (03) : 338 - 342
[23] Synthesis and characterization of francoisite-(Nd): Nd[(UO2)3O(OH)(PO4)2]•6H2O
Armstrong, Christopher R.
Nash, Kenneth L.
Griffiths, Peter R.
Clark, Sue B.
AMERICAN MINERALOGIST, 2011, 96 (2-3) : 417 - 422
[24] Synthesis and crystal structure of [Tb4(H2O)2](C2O4)2(C5H6O4)4
Thomas, P
Trombe, JC
JOURNAL OF CHEMICAL CRYSTALLOGRAPHY, 2000, 30 (10) : 633 - 639
[25] Synthesis and crystal structure of [Tb4(H2O)2](C2O4)2(C5H6O4)4
P. Thomas
J.C. Trombe
Journal of Chemical Crystallography, 2000, 30 : 633 - 639
[26] Crystal and molecular structure of (NH4)2[UO2(NO3)4] and [(NH4)(18C6)]2[UO2(NO3)4]
Belomestnykh, V. I.
Sveshnikova, L. B.
Churakov, A. V.
Kanishcheva, A. S.
Mikhailov, Yu N.
RUSSIAN JOURNAL OF INORGANIC CHEMISTRY, 2011, 56 (12) : 1899 - 1907
[27] A QM/MM study on the aqueous solvation of the tetrahydroxouranylate [UO2(OH)4]2- complex ion
Infante, Ivan
Van Stralen, Bas
Visscher, Lucas
JOURNAL OF COMPUTATIONAL CHEMISTRY, 2006, 27 (11) : 1156 - 1162
[28] CRYSTAL STRUCTURE OF TENGCHONGITE WITH A REVISED CHEMICAL FORMULA Ca(UO2)6(MoO4OH)2O2(OH)4•9H2O
Li, Ting
Fan, Guang
Ge, Xiangkun
Wang, Tao
Yu, Apeng
Deng, Liumin
CANADIAN MINERALOGIST, 2022, 60 (03) : 533 - 542
[29] Crystal structure of vanuralite, Al[(UO2)2(VO4)2](OH)•8.5H2O
Plasil, Jakub
ZEITSCHRIFT FUR KRISTALLOGRAPHIE-CRYSTALLINE MATERIALS, 2017, 232 (12): : 807 - 814
[30] Synthesis and structure of Na[UO2(SeO3)(HSeO3)] · 4H2O
A. V. Marukhnov
D. V. Pushkin
E. V. Peresypkina
A. V. Virovets
L. B. Serezhkina
Russian Journal of Inorganic Chemistry, 2008, 53 : 831 - 836

← 1 2 3 4 5 →