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Wang JY, Mei L, Liu Y, Jin QY, Hu KQ, Yu JP, Jiao CS, Zhang M, Shi WQ. Unveiling Structural Diversity of Uranyl Compounds of Aprotic 4,4'-Bipyridine N, N'-Dioxide Bearing O-Donors. ACS OMEGA 2023; 8:8894-8909. [PMID: 36910938 PMCID: PMC9996810 DOI: 10.1021/acsomega.3c00640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 02/14/2023] [Indexed: 06/18/2023]
Abstract
As an aprotic O-donor ligand, 4,4'-bipyridine N,N'-dioxide (DPO) shows good potential for the preparation of uranyl coordination compounds. In this work, by regulating reactant compositions and synthesis conditions, diverse coordination assembly between uranyl and DPO under different reaction conditions was achieved in the presence of other coexisting O-donors. A total of ten uranyl-DPO compounds, U-DPO-1 to U-DPO-10, have been synthesized by evaporation or hydro/solvothermal treatment, and the possible competition and cooperation of DPO with other O-donors for the formation of these uranyl-DPO compounds are discussed. Starting with an aqueous solution of uranyl nitrate, it is found that an anionic nitrate or hydroxyl group is involved in the coordination sphere of uranyl in U-DPO-1 ((UO2)(NO3)2(H2O)2·(DPO)), U-DPO-2 ((UO2)(NO3)2(DPO)), and U-DPO-3 ((UO2)(DPO)(μ2-OH)2), where DPO takes three different kinds of coordination modes, i.e. uncoordinated, monodentate, and biconnected. The utilization of UO2(CF3SO3)2 in acetonitrile, instead of an aqueous solution of uranyl nitrate, precludes the participation of nitrate and hydroxyl, and ensures the engagement of DPO ligands (4-5 DPO ligands for each uranyl) in a uranyl coordination sphere of U-DPO-4 ([(UO2)(CF3SO3)(DPO)2](CF3SO3)), U-DPO-5 ([UO2(H2O)(DPO)2](CF3SO3)2) and U-DPO-6 ([(UO2)(DPO)2.5](CF3SO3)2). Moreover, when combined with anionic carboxylate ligands, terephthalic acid (H2TPA), isophthalic acid (H2IPA), and succinic acid (H2SA), DPO works well with them to produce four mixed-ligand uranyl compounds with similar structures of two-dimensional (2D) networks or three-dimensional (3D) frameworks, U-DPO-7 ((UO2)(TPA)(DPO)), U-DPO-8 ((UO2)2(DPO)(IPA)2·0.5H2O), U-DPO-9 ((UO2)(SA)(DPO)·H2O), and U-DPO-10 ((UO2)2(μ2-OH)(SA)1.5(DPO)). Density functional theory (DFT) calculations conducted to probe the bonding features between uranyl ions and different O-donor ligands show that the bonding ability of DPO is better than that of anionic CF3SO3 -, nitrate, and a neutral H2O molecule and comparable to that of an anionic carboxylate group. Characterization of physicochemical properties of U-DPO-7 and U-DPO-10 with high phase purity including infrared (IR) spectroscopy, thermogravimetric analysis (TGA), and luminescence properties is also provided.
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Affiliation(s)
- Jing-yang Wang
- Fundamental
Science on Nuclear Safety and Simulation Technology Laboratory, College
of Nuclear Science and Technology, Harbin
Engineering University, Harbin 150001, China
- Laboratory
of Nuclear Energy Chemistry, Institute of
High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Lei Mei
- Laboratory
of Nuclear Energy Chemistry, Institute of
High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Yang Liu
- Laboratory
of Nuclear Energy Chemistry, Institute of
High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Qiu-yan Jin
- Laboratory
of Nuclear Energy Chemistry, Institute of
High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
- University
of Chinese Academy of Sciences, Beijing 100049, China
| | - Kong-qiu Hu
- Laboratory
of Nuclear Energy Chemistry, Institute of
High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Ji-pan Yu
- Laboratory
of Nuclear Energy Chemistry, Institute of
High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Cai-shan Jiao
- Fundamental
Science on Nuclear Safety and Simulation Technology Laboratory, College
of Nuclear Science and Technology, Harbin
Engineering University, Harbin 150001, China
| | - Meng Zhang
- Fundamental
Science on Nuclear Safety and Simulation Technology Laboratory, College
of Nuclear Science and Technology, Harbin
Engineering University, Harbin 150001, China
| | - Wei-qun Shi
- Laboratory
of Nuclear Energy Chemistry, Institute of
High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
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Bonato L, Virot M, Le Goff X, Moisy P, Nikitenko SI. Sonochemical dissolution of nanoscale ThO 2 and partial conversion into a thorium peroxo sulfate. ULTRASONICS SONOCHEMISTRY 2020; 69:105235. [PMID: 32619920 DOI: 10.1016/j.ultsonch.2020.105235] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 06/15/2020] [Accepted: 06/18/2020] [Indexed: 06/11/2023]
Abstract
The influence of the sample morphology and experimental conditions towards the sonochemical dissolution of nanoscale ThO2 samples in sulfuric acid media is described. Significant sonochemical dissolution rates and yields are observed at 20 kHz under Ar/O2 atmosphere in dilute 0.5 M H2SO4 at room temperature, contrasting with the generally-reported high refractory behavior for ThO2. The dissolution of ThO2 combines the physical effects driven by acoustic cavitation phenomenon, the complexing affinity of Th(IV) in sulfuric medium and the sonochemical generation of H2O2. These sonochemical conditions further allow the observation of the partial conversion of ThO2 into a scarce Th(IV) peroxo sulfate with 1D morphology resulting from one or both following processes: dissolution/reprecipitation or formation of an intermediate Th(IV) surface complex.
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Affiliation(s)
- Laura Bonato
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, Marcoule, France
| | - Matthieu Virot
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, Marcoule, France.
| | - Xavier Le Goff
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, Marcoule, France
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Simonnet M, Barré N, Drot R, Naour CL, Sladkov V, Delpech S. Multiparametric study of thorium oxide dissolution in aqueous media. RADIOCHIM ACTA 2016. [DOI: 10.1515/ract-2016-2607] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Thorium oxide is poorly soluble: unlike uranium oxide, concentrated nitric acid medium is not sufficient to get quantitative dissolution. Addition of small amounts of fluoride is required to achieve thorium oxide total dissolution. The effect of several parameters on thorium oxide dissolution in order to optimize the dissolution conditions is reported in this paper. Thus the influence of solid characteristics, dissolution method, temperature and composition of dissolution medium on ThO2 dissolution rate has been studied. No complexing agents tested other than fluoride allows total dissolution. Beyond a given HF concentration a decrease of the dissolution rate is observed due to the formation of a precipitate at the solid/solution interface. It was demonstrated by XPS measurements that this precipitate is constituted of thorium fluoride (ThF4) formed during the ThO2 dissolution. The low concentration of HF required to achieve a total dissolution and the activation energy value measured tends to show a catalytic effect of HF on the dissolution process.
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Affiliation(s)
- Marie Simonnet
- Institut de Physique Nucléaire, CNRS-IN2P3, Univ. Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - Nicole Barré
- Institut de Physique Nucléaire, CNRS-IN2P3, Univ. Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - Romuald Drot
- Institut de Physique Nucléaire, CNRS-IN2P3, Univ. Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - Claire Le Naour
- Institut de Physique Nucléaire, CNRS-IN2P3, Univ. Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - Vladimir Sladkov
- Institut de Physique Nucléaire, CNRS-IN2P3, Univ. Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - Sylvie Delpech
- Institut de Physique Nucléaire, CNRS-IN2P3, Univ. Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
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Lemmouchi M, Hannachi D, Ouddai N. Comparative study of the lanthanide (Ln) and actinide (An) triflate complexes M(OTf) n. J STRUCT CHEM+ 2016. [DOI: 10.1134/s0022476615080065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Zhang Y, Price JR, Karatchevtseva I, Lu K, Yoon B, Kadi F, Lumpkin GR, Li F. Comparison of uranium(VI) and thorium(IV) coordination polymers with p-toluenesulfonic acid. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.03.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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