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Arman MÖ, Mullaliu A, Geboes B, Van Hecke K, Das G, Aquilanti G, Binnemans K, Cardinaels T. Separation of terbium as a first step towards high purity terbium-161 for medical applications. RSC Adv 2024; 14:19926-19934. [PMID: 38903678 PMCID: PMC11187813 DOI: 10.1039/d4ra02694b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Accepted: 06/05/2024] [Indexed: 06/22/2024] Open
Abstract
Terbium-161 is a medical radiolanthanide that has a beta decay energy and half-life similar to that of lutetium-177, which makes it a promising alternative for therapeutic purposes. The production route using an enriched gadolinium-160 target necessitates the purification of terbium-161 from the untransmuted target material as well as from its stable decay product, dysprosium-161. The separation of neighbouring lanthanides is challenging due to their similar chemical properties and prominent trivalent oxidation states. In this work, the aim is to change the oxidation state of terbium, resulting in the altering of chemical properties that ease the intragroup separation. To this end, a novel separation method is investigated, involving the electrochemical oxidation of terbium (3+) to terbium (4+) followed by anion exchange chromatography. The electrolysis conditions are set to the highest achievable conversion rate, followed by a dilution step during which the pH and electrolyte concentration are slightly lowered to obtain conditions that are compatible with the separation method. XAS analysis is done to characterize the carbonato complex of both oxidation states and to further elucidate the separation mechanism. The results show that the separation approach of combining electrochemical oxidation with anion exchange chromatography is promising for the purification of 161Tb for medical use.
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Affiliation(s)
- Meryem Özge Arman
- KU Leuven, Department of Chemistry Celestijnenlaan 200F, P.O. 2404 B-3001 Leuven Belgium
- Belgian Nuclear Research Centre SCK CEN, Institute for Nuclear Energy Technology Boeretang 200, Mol B-2400 Belgium
| | - Angelo Mullaliu
- KU Leuven, Department of Chemistry Celestijnenlaan 200F, P.O. 2404 B-3001 Leuven Belgium
| | - Bart Geboes
- Belgian Nuclear Research Centre SCK CEN, Institute for Nuclear Energy Technology Boeretang 200, Mol B-2400 Belgium
| | - Karen Van Hecke
- Belgian Nuclear Research Centre SCK CEN, Institute for Nuclear Energy Technology Boeretang 200, Mol B-2400 Belgium
| | - Ganghadar Das
- Elettra Sincrotrone Trieste 34149 Basovizza Trieste Italy
| | | | - Koen Binnemans
- KU Leuven, Department of Chemistry Celestijnenlaan 200F, P.O. 2404 B-3001 Leuven Belgium
| | - Thomas Cardinaels
- KU Leuven, Department of Chemistry Celestijnenlaan 200F, P.O. 2404 B-3001 Leuven Belgium
- Belgian Nuclear Research Centre SCK CEN, Institute for Nuclear Energy Technology Boeretang 200, Mol B-2400 Belgium
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2
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van der Meulen NP, Talip Z. Non-conventional radionuclides: The pursuit for perfection. Nucl Med Mol Imaging 2022. [DOI: 10.1016/b978-0-12-822960-6.00052-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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3
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Kormazeva ES, Khomenko IA, Unezhev VN, Aliev RA. Experimental study of α-particle induced reactions on natural erbium for the production of Auger-emitters 167Tm, 165Er and 169Yb. Appl Radiat Isot 2021; 177:109919. [PMID: 34509002 DOI: 10.1016/j.apradiso.2021.109919] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 07/22/2021] [Accepted: 08/23/2021] [Indexed: 11/27/2022]
Abstract
The cross sections for nuclear reactions natEr(α,x) were measured in the energy range 60 → 10 MeV using the stacked-foil technique. The experiments were carried out in a wider energy range in comparison with previous works. The results are consistent with other studies and modeling using TENDL-2019. The 167Tm yield was 5.4 MBq/μAh in the range 60 → 30 MeV, and the main long-lived impurity is 168Tm (0.78% in terms of activity). The 165Tm yield is 4.6 MBq/μAh (60 → 40 MeV). 169Yb is formed with a yield of 1.0 MBq/μAh in the energy range 60 → 20 MeV.
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Affiliation(s)
- E S Kormazeva
- National Research Center «Kurchatov Institute», 1, Akademika Kurchatova pl., Moscow, 123182, Russian Federation.
| | - I A Khomenko
- National Research Center «Kurchatov Institute», 1, Akademika Kurchatova pl., Moscow, 123182, Russian Federation
| | - V N Unezhev
- National Research Center «Kurchatov Institute», 1, Akademika Kurchatova pl., Moscow, 123182, Russian Federation
| | - R A Aliev
- National Research Center «Kurchatov Institute», 1, Akademika Kurchatova pl., Moscow, 123182, Russian Federation
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4
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Separation of 167Tm, 165Er and 169Yb from erbium targets irradiated by 60 MeV alpha particles. J Radioanal Nucl Chem 2021. [DOI: 10.1007/s10967-021-07865-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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5
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Talip Z, Borgna F, Müller C, Ulrich J, Duchemin C, Ramos JP, Stora T, Köster U, Nedjadi Y, Gadelshin V, Fedosseev VN, Juget F, Bailat C, Fankhauser A, Wilkins SG, Lambert L, Marsh B, Fedorov D, Chevallay E, Fernier P, Schibli R, van der Meulen NP. Production of Mass-Separated Erbium-169 Towards the First Preclinical in vitro Investigations. Front Med (Lausanne) 2021; 8:643175. [PMID: 33968955 PMCID: PMC8100037 DOI: 10.3389/fmed.2021.643175] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 03/22/2021] [Indexed: 01/08/2023] Open
Abstract
The β--particle-emitting erbium-169 is a potential radionuclide toward therapy of metastasized cancer diseases. It can be produced in nuclear research reactors, irradiating isotopically-enriched 168Er2O3. This path, however, is not suitable for receptor-targeted radionuclide therapy, where high specific molar activities are required. In this study, an electromagnetic isotope separation technique was applied after neutron irradiation to boost the specific activity by separating 169Er from 168Er targets. The separation efficiency increased up to 0.5% using resonant laser ionization. A subsequent chemical purification process was developed as well as activity standardization of the radionuclidically pure 169Er. The quality of the 169Er product permitted radiolabeling and pre-clinical studies. A preliminary in vitro experiment was accomplished, using a 169Er-PSMA-617, to show the potential of 169Er to reduce tumor cell viability.
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Affiliation(s)
- Zeynep Talip
- Center for Radiopharmaceutical Sciences ETH-PSI-USZ, Paul Scherrer Institute, Villigen, Switzerland
| | - Francesca Borgna
- Center for Radiopharmaceutical Sciences ETH-PSI-USZ, Paul Scherrer Institute, Villigen, Switzerland
| | - Cristina Müller
- Center for Radiopharmaceutical Sciences ETH-PSI-USZ, Paul Scherrer Institute, Villigen, Switzerland
- Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland
| | - Jiri Ulrich
- Laboratory of Radiochemistry, Paul Scherrer Institute, Villigen, Switzerland
| | - Charlotte Duchemin
- European Organization for Nuclear Research (CERN), Geneva, Switzerland
- Institute for Nuclear and Radiation Physics, Catholic University of Leuven, Leuven, Belgium
| | - Joao P. Ramos
- European Organization for Nuclear Research (CERN), Geneva, Switzerland
- Institute for Nuclear and Radiation Physics, Catholic University of Leuven, Leuven, Belgium
| | - Thierry Stora
- European Organization for Nuclear Research (CERN), Geneva, Switzerland
| | | | - Youcef Nedjadi
- Institute of Radiation Physics, University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Vadim Gadelshin
- European Organization for Nuclear Research (CERN), Geneva, Switzerland
- Institute of Physics, Johannes Gutenberg University, Mainz, Germany
- Institute of Physics and Technology, Ural Federal University, Yekaterinburg, Russia
| | | | - Frederic Juget
- Institute of Radiation Physics, University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Claude Bailat
- Institute of Radiation Physics, University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Adelheid Fankhauser
- Analytic Radioactive Materials, Paul Scherrer Institute, Villigen, Switzerland
| | - Shane G. Wilkins
- European Organization for Nuclear Research (CERN), Geneva, Switzerland
| | - Laura Lambert
- European Organization for Nuclear Research (CERN), Geneva, Switzerland
| | - Bruce Marsh
- European Organization for Nuclear Research (CERN), Geneva, Switzerland
| | - Dmitry Fedorov
- Petersburg Nuclear Physics Institute, National Research Center Kurchatov Institute, Gatchina, Russia
| | - Eric Chevallay
- European Organization for Nuclear Research (CERN), Geneva, Switzerland
| | - Pascal Fernier
- European Organization for Nuclear Research (CERN), Geneva, Switzerland
| | - Roger Schibli
- Center for Radiopharmaceutical Sciences ETH-PSI-USZ, Paul Scherrer Institute, Villigen, Switzerland
- Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland
| | - Nicholas P. van der Meulen
- Center for Radiopharmaceutical Sciences ETH-PSI-USZ, Paul Scherrer Institute, Villigen, Switzerland
- Laboratory of Radiochemistry, Paul Scherrer Institute, Villigen, Switzerland
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6
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Lyczko K, Rode JE, Dobrowolski JC. Chiral Lanthanide Complexes with l- and d-Alanine: An X-ray and Vibrational Circular Dichroism Study. Molecules 2020; 25:E2729. [PMID: 32545530 PMCID: PMC7357152 DOI: 10.3390/molecules25122729] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 06/09/2020] [Accepted: 06/10/2020] [Indexed: 01/17/2023] Open
Abstract
A whole series of [Ln(H2O)4(Ala)2]26+ dimeric cationic lanthanide complexes with both L- and D-alanine enantiomers was synthesized. The single-crystal X-ray diffraction at 100 and 292 K shows the formation of two types of dimers (I and II) in crystals. Between the dimer centers, the alanine molecules behave as bridging (μ2-O,O'-) and chelating bridging (μ2-O,O,O'-) ligands. The first type of bridge is present in dimers I, while both bridge forms can be observed in dimers II. The IR and vibrational circular dichroism (VCD) spectra of all L- and D-alanine complexes were registered in the 1750-1250 cm-1 range as KBr pellets. Despite all the studied complexes are exhibiting similar crystal structures, the spectra reveal correlations or trends with the Ln-O1 distances which exemplify the lanthanide contraction effect in the IR spectra. This is especially true for the positions and intensities of some IR bands. Unexpectedly, the ν(C=O) VCD bands are quite intense and their composed shapes reveal the inequivalence of the C=O vibrators in the unit cell which vary with the lanthanide. Unlike in the IR spectra, the ν(C=O) VCD band positions are only weakly correlated with the change of Ln and the VCD intensities at most show some trends. Nevertheless, this is the first observation of the lanthanide contraction effect in the VCD spectra. Generally, for the heavier lanthanides (Ln: Dy-Lu), the VCD band maxima are very close to each other and the mirror reflection of the band of two enantiomers is usually better than that of the lighter Lns. DFT calculations show that the higher the multiplicity the higher the stability of the system. Actually, the molecular geometry in crystals (at 100 K) is well predicted based on the highest-spin structures. Also, the simulated IR and VCD spectra strongly depend on the Ln electron configuration but the best overall agreement was reached for the Lu complex, which is the only system with a fully filled f-shell.
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Affiliation(s)
- Krzysztof Lyczko
- Institute of Nuclear Chemistry and Technology, Dorodna 16, 03-195 Warsaw, Poland; (J.E.R.); (J.C.D.)
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Talip Z, Favaretto C, Geistlich S, van der Meulen NP. A Step-by-Step Guide for the Novel Radiometal Production for Medical Applications: Case Studies with 68Ga, 44Sc, 177Lu and 161Tb. Molecules 2020; 25:E966. [PMID: 32093425 PMCID: PMC7070971 DOI: 10.3390/molecules25040966] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 02/16/2020] [Accepted: 02/17/2020] [Indexed: 02/06/2023] Open
Abstract
The production of novel radionuclides is the first step towards the development of new effective radiopharmaceuticals, and the quality thereof directly affects the preclinical and clinical phases. In this review, novel radiometal production for medical applications is briefly elucidated. The production status of the imaging nuclide 44Sc and the therapeutic β--emitter nuclide 161Tb are compared to their more established counterparts, 68Ga and 177Lu according to their targetry, irradiation process, radiochemistry, and quality control aspects. The detailed discussion of these significant issues will help towards the future introduction of these promising radionuclides into drug manufacture for clinical application under Good Manufacturing Practice (GMP).
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Affiliation(s)
- Zeynep Talip
- Center for Radiopharmaceutical Sciences ETH-PSI-USZ, Paul Scherrer Institute, 5232 Villigen-PSI, Switzerland
| | - Chiara Favaretto
- Center for Radiopharmaceutical Sciences ETH-PSI-USZ, Paul Scherrer Institute, 5232 Villigen-PSI, Switzerland
- Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland
| | - Susanne Geistlich
- Center for Radiopharmaceutical Sciences ETH-PSI-USZ, Paul Scherrer Institute, 5232 Villigen-PSI, Switzerland
- Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland
| | - Nicholas P. van der Meulen
- Center for Radiopharmaceutical Sciences ETH-PSI-USZ, Paul Scherrer Institute, 5232 Villigen-PSI, Switzerland
- Laboratory of Radiochemistry, Paul Scherrer Institute, 5232 Villigen-PSI, Switzerland
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8
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Radiochemical processing of nuclear-reactor-produced radiolanthanides for medical applications. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2018.11.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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9
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Tárkányi F, Hermanne A, Ditrói F, Takács S. Activation cross sections of proton induced nuclear reactions on neodymium up to 65 MeV. J Radioanal Nucl Chem 2017. [DOI: 10.1007/s10967-017-5498-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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10
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Kazakov AG, Aliev RA, Bodrov AY, Priselkova AB, Kalmykov SN. Separation of radioisotopes of terbium from a europium target irradiated by 27 MeV α-particles. RADIOCHIM ACTA 2017. [DOI: 10.1515/ract-2017-2777] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
A method for obtaining 156, 155, 154m2, 154, 153Tb radiotracers by the irradiation of a europium oxide target of natural isotopic composition by 27 MeV α-particles is proposed. Terbium can be efficiently separated from bulk of europium by the reduction of the latter by zinc in an acidic solution and precipitation as EuSO4. The optimum Zn/Eu3+ and (NH4)2SO4/Eu3+ molar ratios are 20 and 3, respectively. Terbium is additionally purified from europium and gadolinium by extraction chromatography using LN Resin. It is demonstrated that optimum separation is attained in 0.6 M HNO3. The Tb/Eu separation coefficient was ~5·105. The yield of terbium was about 90%. Time of all steps was 1.5–2 h. The proposed procedure makes it possible to obtain no carrier added terbium radiotracers.
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Affiliation(s)
- Andrey G. Kazakov
- Department of Nuclear and Radiation Medicine , National Research Center “Kurchatov Institute” , Akademika Kurchatova pl. , 1, Moscow, 123182 , Russia
- Chemistry Department , Lomonosov Moscow State University , Leninskie Gory, 1 , Moscow, 119991 , Russia
| | - Ramiz A. Aliev
- Department of Nuclear and Radiation Medicine , National Research Center “Kurchatov Institute” , Akademika Kurchatova pl. , 1, Moscow, 123182 , Russia
- Chemistry Department , Lomonosov Moscow State University , Leninskie Gory, 1 , Moscow, 119991 , Russia
| | - Alexander Yu. Bodrov
- Chemistry Department , Lomonosov Moscow State University , Leninskie Gory, 1 , Moscow, 119991 , Russia
| | - Anna B. Priselkova
- Chemistry Department , Lomonosov Moscow State University , Leninskie Gory, 1 , Moscow, 119991 , Russia
| | - Stepan N. Kalmykov
- Department of Nuclear and Radiation Medicine , National Research Center “Kurchatov Institute” , Akademika Kurchatova pl. , 1, Moscow, 123182 , Russia
- Chemistry Department , Lomonosov Moscow State University , Leninskie Gory, 1 , Moscow, 119991 , Russia
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12
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Tárkányi F, Ditrói F, Takács S, Hermanne A, Baba M. Activation cross sections of proton and deuteron induced nuclear reactions on holmium and erbium, related to the production of (161)Er and (160)Er medical isotopes. Appl Radiat Isot 2016; 115:262-266. [PMID: 27451109 DOI: 10.1016/j.apradiso.2016.07.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Revised: 06/17/2016] [Accepted: 07/05/2016] [Indexed: 10/21/2022]
Abstract
Experimental excitation functions for long-lived products in proton induced reactions were measured with the activation method in the 37-65MeV energy range on natural holmium. Stacked foil irradiation technique and high resolution gamma spectrometry were used in order to measure cross-section data for the production of (161)Er, (160)Er and (1)(59,157)Dy. For comparison of the production routes of medically related (161)Er and (160)Er radioisotopes new experimental cross section data were deduced for the (162)Er(p,x)(161,160)Er and (162)Er(d,x)(161,160)Er reactions by re-evaluating gamma-ray spectra from earlier measurements. No earlier data were found in the literature for these reactions. The experimental data are compared with results of TALYS theoretical code reported in TENDL-2015.
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Affiliation(s)
- F Tárkányi
- Institute for Nuclear Research, Hungarian Academy of Sciences (ATOMKI), 4026 Debrecen, Hungary
| | - F Ditrói
- Institute for Nuclear Research, Hungarian Academy of Sciences (ATOMKI), 4026 Debrecen, Hungary.
| | - S Takács
- Institute for Nuclear Research, Hungarian Academy of Sciences (ATOMKI), 4026 Debrecen, Hungary
| | - A Hermanne
- Vrije Universiteit Brussel (VUB), Cyclotron Laboratory, 1090 Brussels, Belgium
| | - M Baba
- Cyclotron and Radioisotope Center (CYRIC), Tohoku University, Sendai 980-8578, Japan
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13
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Cross sections of deuteron induced reactions on natSm for production of the therapeutic radionuclide 145Sm and 153Sm. Appl Radiat Isot 2014; 91:31-7. [DOI: 10.1016/j.apradiso.2014.05.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Revised: 03/13/2014] [Accepted: 05/12/2014] [Indexed: 11/20/2022]
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Abstract
Abstract
Medical radionuclide production technology is well established. Both reactors and cyclotrons are utilized for production; the positron emitters, however, are produced exclusively using cyclotrons. A brief survey of the production methods of most commonly used diagnostic and therapeutic radionuclides is given. The emerging radionuclides are considered in more detail. They comprise novel positron emitters and therapeutic radionuclides emitting low-range electrons and α-particles. The possible alternative production routes of a few established radionuclides, like 68Ga and 99mTc, are discussed. The status of standardisation of production data of the commonly used as well as of some emerging radionuclides is briefly mentioned. Some notions on anticipated future trends in the production and application of radionuclides are considered.
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Affiliation(s)
- S. M. Qaim
- Institut für Neurowissenschaften und Medizin, INM-5: Nuklearchemie, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
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15
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Activation cross-sections of longer-lived products of proton induced nuclear reactions on dysprosium up to 36MeV. ANN NUCL ENERGY 2013. [DOI: 10.1016/j.anucene.2013.06.038] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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16
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Janicki R, Mondry A. Relationships Between Structure and Spectroscopic Properties of Nd3+Ethylenediaminetetramethylenephosphonates and Ethylenediaminetetraacetates. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300089] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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17
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Castro G, Bastida R, Macías A, Pérez-Lourido P, Platas-Iglesias C, Valencia L. Pyridinophane Platform for Stable Lanthanide(III) Complexation. Inorg Chem 2013; 52:6062-72. [DOI: 10.1021/ic400389d] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Goretti Castro
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidade de Vigo, As Lagoas, Marcosende, 36310
Pontevedra, Spain
| | - Rufina Bastida
- Departamento
de Química Inorgánica, Facultad de Química, Universidad de Santiago de Compostela, Avda. de las
Ciencias s/n, E-15782, Santiago de Compostela, Spain
| | - Alejandro Macías
- Departamento
de Química Inorgánica, Facultad de Química, Universidad de Santiago de Compostela, Avda. de las
Ciencias s/n, E-15782, Santiago de Compostela, Spain
| | - Paulo Pérez-Lourido
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidade de Vigo, As Lagoas, Marcosende, 36310
Pontevedra, Spain
| | - Carlos Platas-Iglesias
- Departamento de Química Fundamental,
Facultade de Ciencias, Universidade da Coruña, A Coruña, Spain
| | - Laura Valencia
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidade de Vigo, As Lagoas, Marcosende, 36310
Pontevedra, Spain
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18
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Investigation of production routes for the 161Ho Auger-electron emitting radiolanthanide, a candidate for therapy. J Radioanal Nucl Chem 2013. [DOI: 10.1007/s10967-012-2403-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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19
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Das T, Pillai M. Options to meet the future global demand of radionuclides for radionuclide therapy. Nucl Med Biol 2013; 40:23-32. [DOI: 10.1016/j.nucmedbio.2012.09.007] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2012] [Revised: 09/05/2012] [Accepted: 09/10/2012] [Indexed: 01/09/2023]
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20
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Rodríguez-Rodríguez A, Esteban-Gómez D, de Blas A, Rodríguez-Blas T, Botta M, Tripier R, Platas-Iglesias C. Solution Structure of Ln(III) Complexes with Macrocyclic Ligands Through Theoretical Evaluation of 1H NMR Contact Shifts. Inorg Chem 2012; 51:13419-29. [DOI: 10.1021/ic302322r] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Aurora Rodríguez-Rodríguez
- Departamento de Química Fundamental, Facultade de Ciencias, Universidade da Coruña, Campus da Zapateira-Rúa da Fraga 10, 15008 A Coruña, Spain
| | - David Esteban-Gómez
- Departamento de Química Fundamental, Facultade de Ciencias, Universidade da Coruña, Campus da Zapateira-Rúa da Fraga 10, 15008 A Coruña, Spain
| | - Andrés de Blas
- Departamento de Química Fundamental, Facultade de Ciencias, Universidade da Coruña, Campus da Zapateira-Rúa da Fraga 10, 15008 A Coruña, Spain
| | - Teresa Rodríguez-Blas
- Departamento de Química Fundamental, Facultade de Ciencias, Universidade da Coruña, Campus da Zapateira-Rúa da Fraga 10, 15008 A Coruña, Spain
| | - Mauro Botta
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale “Amedeo Avogadro”, Viale T. Michel 11, 15121 Alessandria, Italy
| | - Raphaël Tripier
- Université de Bretagne Occidentale, UMR-CNRS 6521, UFR des Sciences et Techniques, 6 avenue Victor le Gorgeu, C.S. 93837, 29238 BREST Cedex 3, France
| | - Carlos Platas-Iglesias
- Departamento de Química Fundamental, Facultade de Ciencias, Universidade da Coruña, Campus da Zapateira-Rúa da Fraga 10, 15008 A Coruña, Spain
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21
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Density functional dependence of molecular geometries in lanthanide(III) complexes relevant to bioanalytical and biomedical applications. COMPUT THEOR CHEM 2012. [DOI: 10.1016/j.comptc.2012.08.020] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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22
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Carroll V, Demoin DW, Hoffman TJ, Jurisson SS. Inorganic chemistry in nuclear imaging and radiotherapy: current and future directions. RADIOCHIM ACTA 2012; 100:653-667. [PMID: 25382874 PMCID: PMC4221859 DOI: 10.1524/ract.2012.1964] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Radiometals play an important role in diagnostic and therapeutic radiopharmaceuticals. This field of radiochemistry is multidisciplinary, involving radiometal production, separation of the radiometal from its target, chelate design for complexing the radiometal in a biologically stable environment, specific targeting of the radiometal to its in vivo site, and nuclear imaging and/or radiotherapy applications of the resultant radiopharmaceutical. The critical importance of inorganic chemistry in the design and application of radiometal-containing imaging and therapy agents is described from a historical perspective to future directions.
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Affiliation(s)
| | | | - Timothy J Hoffman
- Chemistry, University of Missouri, Columbia, MO 65211, USA
- Internal Medicine, University of Missouri, Columbia, MO 65211, USA
- Harry S Truman Memorial Veterans Hospital, Columbia, MO 65211, USA
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Norek M, Peters JA. MRI contrast agents based on dysprosium or holmium. PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY 2011; 59:64-82. [PMID: 21600356 DOI: 10.1016/j.pnmrs.2010.08.002] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2010] [Accepted: 08/31/2010] [Indexed: 05/30/2023]
Affiliation(s)
- Małgorzata Norek
- Biocatalysis and Organic Chemistry, Department of Biotechnology, Delft University of Technology, Julianalaan 136, 2628 BL Delft, The Netherlands
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Maiti M, Lahiri S, Tomar BS. Investigation on the production and isolation of 149,150,151Tb from 12C irradiated natural praseodymium target. RADIOCHIM ACTA 2011. [DOI: 10.1524/ract.2011.1839] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Abstract
Short lived α-emitting radionuclides have enormous potential to be used in the targeted therapy. 149Tb (4.118 h) is among the few α-emitting radionuclides which are projected for human clinical use. Therefore, direct production of 149Tb was aimed from the 12C induced reaction on natural praseodymium target of 15 mg∕cm2 thickness at 71.5 MeV incident beam energy. No-carrier-added (nca) 149,150,151Tb radionuclides were produced in the target matrix along with 149Gd, which is also the decay product of 149Tb, with relatively high yield of 149Tb. An efficient radiochemical separation method was developed to separate nca 149–151Tb from bulk praseodymium and coproduced Gd by liquid–liquid extraction (LLX) using aqueous HCl and liquid cation extracting agent di-(2-ethylhexyl)phosphoric acid (HDEHP) dissolved in cyclohexane. Quantitative extraction of nca 149–151Tb was achieved from bulk target with a high separation factor of 4.7×105.
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Affiliation(s)
| | - Susanta Lahiri
- Saha Institute of Nuclear Physics, Chemical Sciences Division, Kolkata, Indien
| | - B. S. Tomar
- Bhabha Atomic Research Centre, Radioanalytical Division, Trombay, Mumbai 400-085, Indien
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Regueiro-Figueroa M, Bensenane B, Ruscsák E, Esteban-Gómez D, Charbonnière LJ, Tircsó G, Tóth I, de Blas A, Rodríguez-Blas T, Platas-Iglesias C. Lanthanide dota-like complexes containing a picolinate pendant: structural entry for the design of Ln(III)-based luminescent probes. Inorg Chem 2011; 50:4125-41. [PMID: 21456610 DOI: 10.1021/ic2001915] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
In this contribution we present two ligands based on a do3a platform containing a picolinate group attached to the fourth nitrogen atom of the cyclen unit, which are designed for stable lanthanide complexation in aqueous solutions. Potentiometric measurements reveal that the thermodynamic stability of the complexes is very high (log K = 21.2-23.5), being comparable to that of the dota analogues. Luminescence lifetime measurements performed on solutions of the Eu(III) and Tb(III) complexes indicate that the complexes are nine coordinate with no inner-sphere water molecules. A combination of density functional theory (DFT) calculations and NMR measurements shows that for the complexes of the heaviest lanthanides there is a major isomer in solution consisting of the enantiomeric pair Λ(δδδδ) and Δ(λλλλ), which provides square antiprismatic coordination (SAP) around the metal ion. Analysis of the Yb(III)-induced paramagnetic shifts unambiguously confirms that these complexes have SAP coordination in aqueous solution. For the light lanthanide ions however both the SAP and twisted-square antiprismatic (TSAP) isomers are present in solution. Inversion of the cyclen ring appears to be the rate-determining step for the Λ(δδδδ) ↔ Δ(λλλλ) enantiomerization process observed in the Lu(III) complexes. The energy barriers obtained from NMR measurements for this dynamic process are in excellent agreement with those predicted by DFT calculations. The energy barriers calculated for the arm-rotation process are considerably lower than those obtained for the ring-inversion path. Kinetic studies show that replacement of an acetate arm of dota by a picolinate pendant results in a 3-fold increase in the formation rate of the corresponding Eu(III) complexes and a significant increase of the rates of acid-catalyzed dissociation of the complexes. However, these rates are 1-2 orders of magnitude lower than those of do3a analogues, which shows that the complexes reported herein are remarkably inert with respect to metal ion dissociation.
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Affiliation(s)
- Martín Regueiro-Figueroa
- Departamento de Química Fundamental, Universidade da Coruña, Campus da Zapateira-Rúa da Fraga 10, 15008 A Coruña, Spain
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Regueiro-Figueroa M, Djanashvili K, Esteban-Gómez D, Chauvin T, Tóth E, de Blas A, Rodríguez-Blas T, Platas-Iglesias C. Molecular recognition of sialic acid by lanthanide(III) complexes through cooperative two-site binding. Inorg Chem 2010; 49:4212-23. [PMID: 20373796 DOI: 10.1021/ic902461g] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Herein we report two new ligands, 1,4,7-tris(carboxymethyl)-10-[2-(dihydroxyboranyl)benzyl]-1,4,7,10-tetraazacyclododecane (L(1)) and 1,4,7-tris(carboxymethyl)-10-[3-(dihydroxyboranyl)benzyl]-1,4,7,10-tetraazacyclododecane (L(2)), which contain a phenylboronic acid (PBA) function and a 1,4,7,10-tetraazacyclododecane-1,4,7-triacetate cage for complexation of lanthanide ions in an aqueous solution. The pK(a) of the PBA function amounts to 4.6 in [Gd(L(1))] and 8.9 in [Gd(L(2))], with the value of the L(2) analogue being very similar to that of PBA (8.8). These results are explained by the coordination of the PBA function of L(1) to the Gd(III) ion, which results in a dramatic lowering of its pK(a). As a consequence, [Gd(L(1))] does not bind to saccharides at physiological pH. The nuclear magnetic relaxation dispersion profiles recorded for [Gd(L(1))] and [Gd(L(2))] confirm that the phenylboronate function is coordinated to the metal ion in the L(1) derivative, which results in a q = 0 complex. The interaction of the [Gd(L(2))] complex with 5-acetylneuraminic acid (Neu5Ac) and 2-alpha-O-methyl-5-acetylneuraminic acid (MeNeu5Ac) has been investigated by means of spectrophotometric titrations in an aqueous solution (pH 7.4, 0.1 M 3-(N-morpholino)propanesulfonic acid buffer). Furthermore, we have also investigated the binding of these receptors with competing monosaccharides such as D-(+)-glucose, D-fructose, D-mannose, D-galactose, methyl alpha-D-galactoside, and methyl alpha-D-mannoside. The binding constants obtained indicate an important selectivity of [Gd(L(2))] for Neu5Ac (K(eq) = 151) over D-(+)-glucose (K(eq) = 12.3), D-mannose (K(eq) = 21.9), and D-galactose (K(eq) = 24.5). Furthermore, a very weak binding affinity was observed in the case of methyl alpha-D-galactoside and methyl alpha-D-mannoside. An 8-fold increase of the binding constant of [Gd(L(2))] with Neu5Ac is observed when compared to that of PBA determined under the same conditions (K(eq) = 19). (13)C NMR spectroscopy and density functional theory calculations performed at the B3LYP/6-31G(d) level show that this is due to a cooperative two-site binding of Neu5Ac through (1) ester formation by interaction on the PBA function of the receptor and (2) coordination of the carboxylate group of Neu5Ac to the Gd(III) ion. The emission lifetime of the (5)D(4) level of Tb(III) in [Tb(L(2))] increases upon Neu5Ac binding, in line with the displacement of inner-sphere water molecules due to coordination of Neu5Ac to the metal ion.
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Affiliation(s)
- Martín Regueiro-Figueroa
- Departamento de Química Fundamental, Universidade da Coruña, Campus da Zapateira, Alejandro de la Sota 1, 15008 A Coruña, Spain
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Regueiro-Figueroa M, Esteban-Gómez D, de Blas A, Rodríguez-Blas T, Platas-Iglesias C. Structure and Dynamics of Lanthanide(III) Complexes with an N-Alkylated do3a Ligand (H3do3a = 1,4,7,10-Tetraazacyclododecane-1,4,7-triacetic Acid): A Combined Experimental and DFT Study. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.201000334] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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28
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Towards highly efficient, intelligent and bimodal imaging probes: Novel approaches provided by lanthanide coordination chemistry. CR CHIM 2010. [DOI: 10.1016/j.crci.2010.03.026] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Schlesinger J, Fischer C, Koezle I, Vonhoff S, Klussmann S, Bergmann R, Pietzsch HJ, Steinbach J. Radiosynthesis of new [90Y]-DOTA-based maleimide reagents suitable for the prelabeling of thiol-bearing L-oligonucleotides and peptides. Bioconjug Chem 2009; 20:1340-8. [PMID: 19552458 DOI: 10.1021/bc900095k] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We describe the radiosynthesis of two new [(90)Y]-DOTA-based maleimide reagents, suitable for the mild radiolabeling of L-RNAs and peptides modified with thiol-bearing linkers. The synthesis procedure of both maleimide-bearing (90)Y complexes, [{(2S)-2-[4-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)benzyl]-1,4,7,10-tetraazacyclododecane-1,4,7,10-tetrayl}tetraacetato][(90)Y]yttrate(1-)([(90)Y]3) and [{(2S)-2-(4-{[4-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)butanoyl]amino}benzyl)-1,4,7,10-tetraaza-cyclododecane-1,4,7,10-tetrayl]tetraacetato}[(90)Y]yttrate(1-)([(90)Y]4), was optimized in terms of an easy purification method via solid-phase extraction (SPE). Application as well as reactivity of both maleimide reagents were initially evaluated by the prelabeling of glutathione (GSH) and a thiol-modified 12mer L-RNA as model substances. In comparison to the N-aryl maleimide-bearing complex [(90)Y]3, N-alkyl maleimide-bearing complex [(90)Y]4 showed an increased hydrolytic stability at pH > or = 7. A slightly higher reactivity was found for [(90)Y]3 by prelabeling of 0.1 and 1 microg glutathione, respectively, in phosphate buffer (pH 7.2) at room temperature. In terms of very high radiochemical yields, the direct radiolabeling of DOTA-L-RNA conjugate with [(90)Y]YCl(3) proved to be more suitable than the prelabeling of the thiol-modified 12mer L-RNA derivative with [(90)Y]4.
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Affiliation(s)
- Joern Schlesinger
- Institute of Radiopharmacy, Forschungszentrum Dresden-Rossendorf, Germany
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Pálinkás Z, Roca-Sabio A, Mato-Iglesias M, Esteban-Gómez D, Platas-Iglesias C, de Blas A, Rodríguez-Blas T, Tóth É. Stability, Water Exchange, and Anion Binding Studies on Lanthanide(III) Complexes with a Macrocyclic Ligand Based on 1,7-Diaza-12-crown-4: Extremely Fast Water Exchange on the Gd3+ Complex. Inorg Chem 2009; 48:8878-89. [DOI: 10.1021/ic9011197] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zoltán Pálinkás
- Centre de Biophysique Moléculaire, CNRS, rue Charles Sadron, 45071 Orléans, Cedex 2, France
| | - Adrián Roca-Sabio
- Departamento de Química Fundamental, Universidade da Coruña, Campus da Zapateira, Alejandro de la Sota 1, 15008 A Coruña, Spain
| | - Marta Mato-Iglesias
- Departamento de Química Fundamental, Universidade da Coruña, Campus da Zapateira, Alejandro de la Sota 1, 15008 A Coruña, Spain
| | - David Esteban-Gómez
- Departamento de Química Fundamental, Universidade da Coruña, Campus da Zapateira, Alejandro de la Sota 1, 15008 A Coruña, Spain
| | - Carlos Platas-Iglesias
- Departamento de Química Fundamental, Universidade da Coruña, Campus da Zapateira, Alejandro de la Sota 1, 15008 A Coruña, Spain
| | - Andrés de Blas
- Departamento de Química Fundamental, Universidade da Coruña, Campus da Zapateira, Alejandro de la Sota 1, 15008 A Coruña, Spain
| | - Teresa Rodríguez-Blas
- Departamento de Química Fundamental, Universidade da Coruña, Campus da Zapateira, Alejandro de la Sota 1, 15008 A Coruña, Spain
| | - Éva Tóth
- Centre de Biophysique Moléculaire, CNRS, rue Charles Sadron, 45071 Orléans, Cedex 2, France
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Djanashvili K, Platas-Iglesias C, Peters JA. The structure of the lanthanide aquo ions in solution as studied by 17O NMR spectroscopy and DFT calculations. Dalton Trans 2008:602-7. [DOI: 10.1039/b714801a] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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