1
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Liu K, Guo Y, Yu J, Shi W. Research Progress of Actinide Single Molecule Magnets. ACTA CHIMICA SINICA 2023. [DOI: 10.6023/a22110471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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2
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Yang Q, Wang GL, Zhang YQ, Tang J. Self-assembly of fish-bone and grid-like Co II-based single-molecule magnets using dihydrazone ligands with NNN and NNO pockets. Dalton Trans 2022; 51:13928-13937. [PMID: 36040449 DOI: 10.1039/d2dt02451a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Three CoII complexes, [Co2(H2L1)2](ClO4)4·4CH3OH (1), [Co2(H4L2)2](ClO4)4 (2) and [Co4(H4L2)4](ClO4)8 (3), were constructed by the self-assembly of the symmetrical dihydrazone ligands H2L1 and H4L2 with CoII ions under different synthetic conditions. The fish-bone-like complex 1 was obtained using the ligand H2L1 in methanol via the solvothermal method, while the self-assembly of H4L2 with CoII ions is solvent-dependent, producing the fish-bone-like complex 2 and [2 × 2] grid-like complex 3. Magnetic susceptibility measurements and theoretical calculations reveal that the large negative D values for the three complexes stem from their easy-axis magnetic anisotropy. Ac magnetic susceptibility measurements disclosed field-induced slow magnetic relaxation behaviors and the presence of Raman and/or direct processes of the three complexes at various applied dc fields.
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Affiliation(s)
- Qianqian Yang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China. .,School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Guo-Lu Wang
- Jiangsu Key Lab for NSLSCS, School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, P. R. China
| | - Yi-Quan Zhang
- Jiangsu Key Lab for NSLSCS, School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, P. R. China
| | - Jinkui Tang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China. .,School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
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3
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Modder DK, Batov MS, Rajeshkumar T, Sienkiewicz A, Zivkovic I, Scopelliti R, Maron L, Mazzanti M. Assembling Diuranium Complexes in Different States of Charge with a Bridging Redox-Active Ligand. Chem Sci 2022; 13:11294-11303. [PMID: 36320571 PMCID: PMC9533398 DOI: 10.1039/d2sc03592h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 08/30/2022] [Indexed: 11/21/2022] Open
Abstract
Radical-bridged diuranium complexes are desirable for their potential high exchange coupling and single molecule magnet (SMM) behavior, but remain rare. Here we report for the first time radical-bridged diuranium(iv) and diuranium(iii) complexes. Reaction of [U{N(SiMe3)2}3] with 2,2′-bipyrimidine (bpym) resulted in the formation of the bpym-bridged diuranium(iv) complex [{((Me3Si)2N)3UIV}2(μ-bpym2−)], 1. Reduction with 1 equiv. KC8 reduces the complex, affording [K(2.2.2-cryptand)][{((Me3Si)2N)3U}2(μ-bpym)], 2, which is best described as a radical-bridged UIII–bpym˙−–UIII complex. Further reduction of 1 with 2 equiv. KC8, affords [K(2.2.2-cryptand)]2[{((Me3Si)2N)3UIII}2(μ-bpym2−)], 3. Addition of AgBPh4 to complex 1 resulted in the oxidation of the ligand, yielding the radical-bridged complex [{((Me3Si)2N)3UIV}2(μ-bpym˙−)][BPh4], 4. X-ray crystallography, electrochemistry, susceptibility data, EPR and DFT/CASSCF calculations are in line with their assignments. In complexes 2 and 4 the presence of the radical-bridge leads to slow magnetic relaxation. Convenient routes to dinuclear complexes of uranium where two uranium centers are bridged by the redox-active ligand bpym were identified resulting in unique and stable radical-bridged dimetallic complexes of U(iii) and U(iv) showing SMM behaviour.![]()
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Affiliation(s)
- Dieuwertje K Modder
- Group of Coordination Chemistry, Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
| | - Mikhail S Batov
- Group of Coordination Chemistry, Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
| | - Thayalan Rajeshkumar
- Laboratoire de Physique et Chimie des Nano-objets, Institut National des Sciences Appliquées Cedex 4 31077 Toulouse France
| | - Andrzej Sienkiewicz
- Laboratory for Quantum Magnetism, Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
- ADSresonances Sàrl Route de Genève 60B 1028 Préverenges Switzerland
| | - Ivica Zivkovic
- Laboratory for Quantum Magnetism, Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
| | - Rosario Scopelliti
- Group of Coordination Chemistry, Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
| | - Laurent Maron
- Laboratoire de Physique et Chimie des Nano-objets, Institut National des Sciences Appliquées Cedex 4 31077 Toulouse France
| | - Marinella Mazzanti
- Group of Coordination Chemistry, Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
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4
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Takeyama T, Tsushima S, Takao K. Effects of Substituents on the Molecular Structure and Redox Behavior of Uranyl(V/VI) Complexes with N 3O 2-Donating Schiff Base Ligands. Inorg Chem 2021; 60:11435-11449. [PMID: 34278786 DOI: 10.1021/acs.inorgchem.1c01449] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Uranyl(VI) complexes with pentadentate N3O2-donating Schiff base ligands having various substituents at the ortho (R1) and/or para (R2) positions on phenolate moieties, R1,R2-Mesaldien2-, were synthesized and thoroughly characterized by 1H nuclear magnetic resonance, infrared, elemental analysis, and single-crystal X-ray diffraction. Molecular structures of UO2(R1,R2-Mesaldien) are more or less affected by the electron-donating or -withdrawing nature of the substituents. The redox behavior of all UO2(R1,R2-Mesaldien) complexes was investigated to understand how substituents introduced onto the ligand affect the redox behavior of these uranyl(VI) complexes. As a result, the redox potentials of UO2(R1,R2-Mesaldien) in dimethyl sulfoxide increased from -1.590 to -1.213 V with an increase in the electron-withdrawing nature of the substituents at the R1 and R2 positions. The spectroelectrochemical measurements and theoretical calculation [density functional theory (DFT) and time-dependent DFT calculations] revealed that the center U6+ of each UO2(R1,R2-Mesaldien) complex undergoes one-electron reduction to afford the corresponding uranyl(V) complex, [UO2(R1,R2-Mesaldien)]-, regardless of the difference in the substituents. Consequently, the redox active center of uranyl(VI) complexes seems not to be governed by the redox potentials but to be determined by whether the LUMO is centered on a U 5f orbital or on one π* orbital of a surrounding ligand.
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Affiliation(s)
- Tomoyuki Takeyama
- Laboratory for Zero-Carbon Energy, Institute of Innovative Research, Tokyo Institute of Technology, 2-12-1 N1-32, O-okayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Satoru Tsushima
- Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Bautzner Landstraße 400, 01328 Dresden, Germany.,Tokyo Tech World Research Hub Initiative (WRHI), Institute of Innovative Research, Tokyo Institute of Technology, 2-12-1, O-okayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Koichiro Takao
- Laboratory for Zero-Carbon Energy, Institute of Innovative Research, Tokyo Institute of Technology, 2-12-1 N1-32, O-okayama, Meguro-ku, Tokyo 152-8550, Japan
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5
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Pattanayak P, Parua SP, Patra D, Brandão P, Felix V, Chattopadhyay AP, Chattopadhyay S. Synthesis of uranium complexes incorporating extended azo-imine ligands: Molecular and electronic structure. J INDIAN CHEM SOC 2021. [DOI: 10.1016/j.jics.2021.100049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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6
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Hu Z, Hu H, Chen Z, Liu D, Zhang Y, Sun J, Liang Y, Yao D, Liang F. Guest-Induced Switching of a Molecule-Based Magnet in a 3d-4f Heterometallic Cluster-Based Chain Structure. Inorg Chem 2021; 60:633-641. [PMID: 33373231 DOI: 10.1021/acs.inorgchem.0c02466] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
With the motivation of controlling a magnetic switch by external stimuli, we report here an infinite chain structure formed from the secondary building units of Cu3Tb2 clusters through the linkage of nitrate ions. It behaves as a molecule-based magnet with the highest energy barrier among isolated Tb/Cu-based single-molecule magnets and single-chain magnets, which is close to a dimer of a Cu3Tb2 cluster unit from a magnetic point as revealed by its correlation length of 2.23 Cu3Tb2 units. This kind of molecule-based magnet in a chain structure is rare. The removal of its guest ethanol molecules leads to the complete disappearance of slow magnetic relaxation behavior. Interestingly, the capture and removal of guest ethanol molecules are reversible, mediating a rare ON/OFF switching of a 3d-4f heterometallic molecule-based magnet, which was interpreted by the theoretical calculations based on the structural difference upon desolvation.
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Affiliation(s)
- Zhaobo Hu
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, P. R. China.,Chaotic Matter Science Research Center, Department of Materials, Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, P. R. China
| | - Huancheng Hu
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, P. R. China
| | - Zilu Chen
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, P. R. China
| | - Dongcheng Liu
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, P. R. China
| | - Yiquan Zhang
- Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, P. R. China
| | - Junliang Sun
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Yuning Liang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, P. R. China
| | - Di Yao
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, P. R. China
| | - Fupei Liang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, P. R. China.,College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, P. R. China
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7
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Surbella RG, Carter KP, Lohrey TD, Reilly D, Kalaj M, McNamara BK, Schwantes J, Abergel RJ. Rational Design of a Uranyl Metal-Organic Framework for the Capture and Colorimetric Detection of Organic Dyes. Chemistry 2020; 26:13819-13825. [PMID: 33463816 DOI: 10.1002/chem.201905766] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Revised: 07/07/2020] [Indexed: 12/26/2022]
Abstract
A new uranyl containing metal-organic framework, RPL-1: [(UO2)2(C28H18O8)] . H2O (RPL for Radiochemical Processing Laboratory), was prepared, structurally characterized, and the solid-state photoluminescence properties explored. Single crystal X-ray diffraction data reveals the structure of RPL-1 consists of two crystallographically unique three dimensional, interpenetrating nets with a 4,3-connected tbo topology. Each net contains large pores with an average width of 22.8 Å and is formed from monomeric, hexagonal bipyramidal uranyl nodes that are linked via 1,2,4,5-tetrakis(4-carboxyphenyl)benzene (TCPB) ligands. The thermal and photophysical properties of RPL-1 were investigated using thermogravimetric analysis and absorbance, fluorescence, and lifetime spectroscopies. The material displays excellent thermal stability and temperature dependent uranyl and TCPB luminescence. The framework is stable in aqueous media and due to the large void space (constituting 76 % of the unit cell by volume) can sequester organic dyes, the uptake of which induces a visible change to the color of the material.
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Affiliation(s)
- Robert G Surbella
- Pacific Northwest National Laboratory, Richland, Washington, 99354, USA
| | - Korey P Carter
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Trevor D Lohrey
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.,Department of Chemistry, University of California, Berkeley, CA, 94720, USA
| | - Dallas Reilly
- Pacific Northwest National Laboratory, Richland, Washington, 99354, USA
| | - Mark Kalaj
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA, 92093, USA
| | - Bruce K McNamara
- Pacific Northwest National Laboratory, Richland, Washington, 99354, USA
| | - Jon Schwantes
- Pacific Northwest National Laboratory, Richland, Washington, 99354, USA
| | - Rebecca J Abergel
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
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8
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Wang X, Wang C, Zhang N, Liu D, Wang Y, Bai FY. Multifunctional Inorganic‐Organic U‐MOF Materials with Nitrogen Heterocyclic Carboxylate: Synthesis, Structure and Properties. ChemistrySelect 2020. [DOI: 10.1002/slct.201904850] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xue‐Meng Wang
- College of Chemistry and Chemical EngineeringLiaoning Normal University Dalian City 116029 P. R. China
| | - Chen Wang
- College of Chemistry and Chemical EngineeringLiaoning Normal University Dalian City 116029 P. R. China
| | - Nan Zhang
- College of Chemistry and Chemical EngineeringLiaoning Normal University Dalian City 116029 P. R. China
| | - Dong‐Qi Liu
- College of Chemistry and Chemical EngineeringLiaoning Normal University Dalian City 116029 P. R. China
| | - Yang Wang
- College of Chemistry and Chemical EngineeringLiaoning Normal University Dalian City 116029 P. R. China
| | - Feng Ying Bai
- College of Chemistry and Chemical EngineeringLiaoning Normal University Dalian City 116029 P. R. China
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9
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Shi L, Shao D, Wei X, Dunbar KR, Wang X. Enhanced Single‐Chain Magnet Behavior via Anisotropic Exchange in a Cyano‐Bridged Mo
III
–Mn
II
Chain. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001706] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Le Shi
- State Key Laboratory of Coordination Chemistry Collaborative Innovation Center of Advanced Microstructures School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Dong Shao
- State Key Laboratory of Coordination Chemistry Collaborative Innovation Center of Advanced Microstructures School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Xiao‐Qin Wei
- State Key Laboratory of Coordination Chemistry Collaborative Innovation Center of Advanced Microstructures School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Kim R. Dunbar
- Department of Chemistry Texas A & M University College Station TX 77840 USA
| | - Xin‐Yi Wang
- State Key Laboratory of Coordination Chemistry Collaborative Innovation Center of Advanced Microstructures School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
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10
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Shi L, Shao D, Wei X, Dunbar KR, Wang X. Enhanced Single‐Chain Magnet Behavior via Anisotropic Exchange in a Cyano‐Bridged Mo
III
–Mn
II
Chain. Angew Chem Int Ed Engl 2020; 59:10379-10384. [DOI: 10.1002/anie.202001706] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 03/22/2020] [Indexed: 11/05/2022]
Affiliation(s)
- Le Shi
- State Key Laboratory of Coordination Chemistry Collaborative Innovation Center of Advanced Microstructures School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Dong Shao
- State Key Laboratory of Coordination Chemistry Collaborative Innovation Center of Advanced Microstructures School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Xiao‐Qin Wei
- State Key Laboratory of Coordination Chemistry Collaborative Innovation Center of Advanced Microstructures School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Kim R. Dunbar
- Department of Chemistry Texas A & M University College Station TX 77840 USA
| | - Xin‐Yi Wang
- State Key Laboratory of Coordination Chemistry Collaborative Innovation Center of Advanced Microstructures School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
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11
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Thorarinsdottir AE, Bjornsson R, Harris TD. Insensitivity of Magnetic Coupling to Ligand Substitution in a Series of Tetraoxolene Radical-Bridged Fe 2 Complexes. Inorg Chem 2020; 59:4634-4649. [PMID: 32196317 DOI: 10.1021/acs.inorgchem.9b03736] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The elucidation of magnetostructural correlations between bridging ligand substitution and strength of magnetic coupling is essential to the development of high-temperature molecule-based magnetic materials. Toward this end, we report the series of tetraoxolene-bridged FeII2 complexes [(Me3TPyA)2Fe2(RL)]n+ (Me3TPyA = tris(6-methyl-2-pyridylmethyl)amine; n = 2: OMeLH2 = 3,6-dimethoxy-2,5-dihydroxo-1,4-benzoquinone, ClLH2 = 3,6-dichloro-2,5-dihydroxo-1,4-benzoquinone, Na2[NO2L] = sodium 3,6-dinitro-2,5-dihydroxo-1,4-benzoquinone; n = 4: SMe2L = 3,6-bis(dimethylsulfonium)-2,5-dihydroxo-1,4-benzoquinone diylide) and their one-electron-reduced analogues. Variable-temperature dc magnetic susceptibility data reveal the presence of weak ferromagnetic superexchange between FeII centers in the oxidized species, with exchange constants of J = +1.2(2) (R = OMe, Cl) and +0.3(1) (R = NO2, SMe2) cm-1. In contrast, X-ray diffraction, cyclic voltammetry, and Mössbauer spectroscopy establish a ligand-centered radical in the reduced complexes. Magnetic measurements for the radical-bridged species reveal the presence of strong antiferromagnetic metal-radical coupling, with J = -57(10), -60(7), -58(6), and -65(8) cm-1 for R = OMe, Cl, NO2, and SMe2, respectively. The minimal effects of substituents in the 3- and 6-positions of RLx-• on the magnetic coupling strength is understood through electronic structure calculations, which show negligible spin density on the substituents and associated C atoms of the ring. Finally, the radical-bridged complexes are single-molecule magnets, with relaxation barriers of Ueff = 50(1), 41(1), 38(1), and 33(1) cm-1 for R = OMe, Cl, NO2, and SMe2, respectively. Taken together, these results provide the first examination of how bridging ligand substitution influences magnetic coupling in semiquinoid-bridged compounds, and they establish design criteria for the synthesis of semiquinoid-based molecules and materials.
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Affiliation(s)
| | - Ragnar Bjornsson
- Department of Inorganic Spectroscopy, Max-Planck-Institut für Chemische Energiekonversion, Mülheim an der Ruhr 45470, Germany
| | - T David Harris
- Department of Chemistry, Northwestern University, Evanston 60208, Illinois, United States.,Department of Chemistry, University of California, Berkeley 94720, California, United States
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12
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Takjoo R, Mague JT. Synthesis and Crystal Structure of [Benzyl N'-[[2-(hydroxy-kO)phenyl]ethylene]-N-[[2-(hydroxy-kO)phenyl]methylene]-carbamohydrazonothioato-kN,kN']-ethanol-dioxido-uranium. CRYSTALLOGR REP+ 2020. [DOI: 10.1134/s1063774519070241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Two uranium coordination polymers constructed by a polycarboxylic acid: Structural variation, photoluminescent and photocatalysis properties. J SOLID STATE CHEM 2020. [DOI: 10.1016/j.jssc.2019.121085] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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14
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Pedersen KS, Meihaus KR, Rogalev A, Wilhelm F, Aravena D, Amoza M, Ruiz E, Long JR, Bendix J, Clérac R. [UF
6
]
2−
: A Molecular Hexafluorido Actinide(IV) Complex with Compensating Spin and Orbital Magnetic Moments. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201905056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Kasper S. Pedersen
- Univ. Bordeaux, CNRS Centre de Recherche Paul Pascal, UMR 5031 33600 Pessac France
- Department of Chemistry Technical University of Denmark, 2800 Kgs. Lyngby Denmark
| | - Katie R. Meihaus
- Department of Chemistry University of California Berkeley CA 94720 USA
| | - Andrei Rogalev
- ESRF–The European Synchrotron, 71, Avenue des Martyrs 38000 Grenoble Cedex 9 France
| | - Fabrice Wilhelm
- ESRF–The European Synchrotron, 71, Avenue des Martyrs 38000 Grenoble Cedex 9 France
| | - Daniel Aravena
- Departamento de Química de los Materiales Facultad de Química y Biología Universidad de Santiago de Chile (USACH) Casilla 40, Correo 33 Santiago Chile
| | - Martín Amoza
- Departament de Química Inorgànica i Orgànica and Institut de Química Teòrica i Computacional Universitat de Barcelona Diagonal 645 08028 Barcelona Spain
| | - Eliseo Ruiz
- Departament de Química Inorgànica i Orgànica and Institut de Química Teòrica i Computacional Universitat de Barcelona Diagonal 645 08028 Barcelona Spain
| | - Jeffrey R. Long
- Department of Chemistry University of California Berkeley CA 94720 USA
- Materials Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
- Department of Chemical and Biomolecular Engineering University of California Berkeley Berkeley CA 94720 USA
| | - Jesper Bendix
- Department of Chemistry University of Copenhagen 2100 Copenhagen Denmark
| | - Rodolphe Clérac
- Univ. Bordeaux, CNRS Centre de Recherche Paul Pascal, UMR 5031 33600 Pessac France
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15
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Zorina LV, Simonov SV, Sasnovskaya VD, Talantsev AD, Morgunov RB, Mironov VS, Yagubskii EB. Slow Magnetic Relaxation, Antiferromagnetic Ordering, and Metamagnetism in Mn II (H 2 dapsc)-Fe III (CN) 6 Chain Complex with Highly Anisotropic Fe-CN-Mn Spin Coupling. Chemistry 2019; 25:14583-14597. [PMID: 31361924 DOI: 10.1002/chem.201902551] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 07/29/2019] [Indexed: 11/07/2022]
Abstract
Reactions of [Mn(H2 dapsc)Cl2 ]⋅H2 O (dapsc=2,6- diacetylpyridine bis(semicarbazone)) with K3 [Fe(CN)6 ] and (PPh4 )3 [Fe(CN)6 ] lead to the formation of the chain polymeric complex {[Mn(H2 dapsc)][Fe(CN)6 ][K(H2 O)3.5 ]}n ⋅1.5n H2 O (1) and the discrete pentanuclear complex {[Mn(H2 dapsc)]3 [Fe(CN)6 ]2 (H2 O)2 }⋅4 CH3 OH⋅3.4 H2 O (2), respectively. In the crystal structure of 1 the high-spin [MnII (H2 dapsc)]2+ cations and low-spin hexacyanoferrate(III) anions are assembled into alternating heterometallic cyano-bridged chains. The K+ ions are located between the chains and are coordinated by oxygen atoms of the H2 dapsc ligand and water molecules. The magnetic structure of 1 is built from ferrimagnetic chains, which are antiferromagnetically coupled. The complex exhibits metamagnetism and frequency-dependent ac magnetic susceptibility, indicating single-chain magnetic behavior with a Mydosh-parameter φ=0.12 and an effective energy barrier (Ueff /kB ) of 36.0 K with τ0 =2.34×10-11 s for the spin relaxation. Detailed theoretical analysis showed highly anisotropic intra-chain spin coupling between [FeIII (CN)6 ]3- and [MnII (H2 dapsc)]2+ units resulting from orbital degeneracy and unquenched orbital momentum of [FeIII (CN)6 ]3- complexes. The origin of the metamagnetic transition is discussed in terms of strong magnetic anisotropy and weak AF interchain spin coupling.
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Affiliation(s)
- Leokadiya V Zorina
- Institute of Solid State Physics, Russian Academy of Sciences, Academician Ossipyan Str. 2, Chernogolovka MD, Russia
| | - Sergey V Simonov
- Institute of Solid State Physics, Russian Academy of Sciences, Academician Ossipyan Str. 2, Chernogolovka MD, Russia
| | - Valentina D Sasnovskaya
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Semenov's av. 1, Chernogolovka, MD, Russia
| | - Artem D Talantsev
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Semenov's av. 1, Chernogolovka, MD, Russia
| | - Roman B Morgunov
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Semenov's av. 1, Chernogolovka, MD, Russia
| | - Vladimir S Mironov
- Shubnikov Institute of Crystallography of Federal Scientific Research, Centre "Crystallography and Photonics", Russian Academy of Sciences, Leninskii av. 59, Moscow, Russia
| | - Eduard B Yagubskii
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Semenov's av. 1, Chernogolovka, MD, Russia
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16
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Zhang J, Zhao QN, Yang F, Yin L, Li MM, Wang Z, Ouyang Z, Xia ZC, Hu TP. A cobalt(ii) chain based on pymca generated in situ from the hydrolysis of 2-cyanopyrimidine: spin canting and magnetic relaxation. RSC Adv 2019; 9:31115-31121. [PMID: 35529373 PMCID: PMC9072564 DOI: 10.1039/c9ra05354a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Accepted: 09/06/2019] [Indexed: 12/14/2022] Open
Abstract
A one-dimensional (1D) coordination polymer, [{Co2(pymca)2·(H2O)4}SO4·2H2O] n (1) (pymca = 2-carboxypyrimidine), was solvothermally synthesized via the reaction of 2-cyanopyrimidine and Co(SCN)2. A bidentate pymca ligand was formed in situ by the hydrolysis of 2-cyanopyrimidine. Furthermore, in this study, the magnetic properties of complex 1 were investigated in detail. The results indicated that complex 1 showed a single-chain magnet (SCM) behavior below ca. 3 K. The energy barrier (Δτ 1/k B) and preexponential factor (τ 0) of SCM were 31.2 K and 5.4 × 10-9 s, respectively.
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Affiliation(s)
- Jie Zhang
- Department of Chemistry, College of Science, North University of China Xueyuan Road 3 Taiyuan 030051 P. R. China
| | - Qian-Nan Zhao
- Department of Chemistry, College of Science, North University of China Xueyuan Road 3 Taiyuan 030051 P. R. China
| | - Feng Yang
- Wuhan National High Magnetic Field Center, School of Physics, Huazhong University of Science and Technology Wuhan 430074 P. R. China
| | - Lei Yin
- Wuhan National High Magnetic Field Center, School of Physics, Huazhong University of Science and Technology Wuhan 430074 P. R. China
| | - Miao-Miao Li
- Department of Chemistry, College of Science, North University of China Xueyuan Road 3 Taiyuan 030051 P. R. China
| | - Zhenxing Wang
- Wuhan National High Magnetic Field Center, School of Physics, Huazhong University of Science and Technology Wuhan 430074 P. R. China
| | - Zhongwen Ouyang
- Wuhan National High Magnetic Field Center, School of Physics, Huazhong University of Science and Technology Wuhan 430074 P. R. China
| | - Zheng-Cai Xia
- Wuhan National High Magnetic Field Center, School of Physics, Huazhong University of Science and Technology Wuhan 430074 P. R. China
| | - Tuo-Ping Hu
- Department of Chemistry, College of Science, North University of China Xueyuan Road 3 Taiyuan 030051 P. R. China
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17
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Cowie BE, Purkis JM, Austin J, Love JB, Arnold PL. Thermal and Photochemical Reduction and Functionalization Chemistry of the Uranyl Dication, [UVIO2]2+. Chem Rev 2019; 119:10595-10637. [DOI: 10.1021/acs.chemrev.9b00048] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Bradley E. Cowie
- EaStCHEM School of Chemistry, The University of Edinburgh, Joseph Black Building, The King’s Buildings, Edinburgh EH9 3FJ, U.K
| | - Jamie M. Purkis
- EaStCHEM School of Chemistry, The University of Edinburgh, Joseph Black Building, The King’s Buildings, Edinburgh EH9 3FJ, U.K
| | - Jonathan Austin
- National Nuclear Laboratory, Chadwick House,
Warrington Road, Birchwood Park, Warrington WA3 6AE, U.K
| | - Jason B. Love
- EaStCHEM School of Chemistry, The University of Edinburgh, Joseph Black Building, The King’s Buildings, Edinburgh EH9 3FJ, U.K
| | - Polly L. Arnold
- EaStCHEM School of Chemistry, The University of Edinburgh, Joseph Black Building, The King’s Buildings, Edinburgh EH9 3FJ, U.K
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18
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Pedersen KS, Meihaus KR, Rogalev A, Wilhelm F, Aravena D, Amoza M, Ruiz E, Long JR, Bendix J, Clérac R. [UF 6 ] 2- : A Molecular Hexafluorido Actinide(IV) Complex with Compensating Spin and Orbital Magnetic Moments. Angew Chem Int Ed Engl 2019; 58:15650-15654. [PMID: 31290580 DOI: 10.1002/anie.201905056] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 06/14/2019] [Indexed: 11/08/2022]
Abstract
The first structurally characterized hexafluorido complex of a tetravalent actinide ion, the [UF6 ]2- anion, is reported in the (NEt4 )2 [UF6 ]⋅2 H2 O salt (1). The weak magnetic response of 1 results from both UIV spin and orbital contributions, as established by combining X-ray magnetic circular dichroism (XMCD) spectroscopy and bulk magnetization measurements. The spin and orbital moments are virtually identical in magnitude, but opposite in sign, resulting in an almost perfect cancellation, which is corroborated by ab initio calculations. This work constitutes the first experimental demonstration of a seemingly non-magnetic molecular actinide complex carrying sizable spin and orbital magnetic moments.
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Affiliation(s)
- Kasper S Pedersen
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, UMR 5031, 33600, Pessac, France.,Department of Chemistry, Technical University of Denmark, 2800 Kgs., Lyngby, Denmark
| | - Katie R Meihaus
- Department of Chemistry, University of California, Berkeley, CA, 94720, USA
| | - Andrei Rogalev
- ESRF-The European Synchrotron, 71, Avenue des Martyrs, 38000, Grenoble Cedex 9, France
| | - Fabrice Wilhelm
- ESRF-The European Synchrotron, 71, Avenue des Martyrs, 38000, Grenoble Cedex 9, France
| | - Daniel Aravena
- Departamento de Química de los Materiales, Facultad de Química y Biología, Universidad de Santiago de Chile (USACH), Casilla 40, Correo 33, Santiago, Chile
| | - Martín Amoza
- Departament de Química Inorgànica i Orgànica and Institut de Química Teòrica i Computacional, Universitat de Barcelona, Diagonal 645, 08028, Barcelona, Spain
| | - Eliseo Ruiz
- Departament de Química Inorgànica i Orgànica and Institut de Química Teòrica i Computacional, Universitat de Barcelona, Diagonal 645, 08028, Barcelona, Spain
| | - Jeffrey R Long
- Department of Chemistry, University of California, Berkeley, CA, 94720, USA.,Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.,Department of Chemical and Biomolecular Engineering, University of California Berkeley, Berkeley, CA, 94720, USA
| | - Jesper Bendix
- Department of Chemistry, University of Copenhagen, 2100, Copenhagen, Denmark
| | - Rodolphe Clérac
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, UMR 5031, 33600, Pessac, France
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19
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Teyar B, Boucenina S, Belkhiri L, Le Guennic B, Boucekkine A, Mazzanti M. Theoretical Investigation of the Electronic Structure and Magnetic Properties of Oxo-Bridged Uranyl(V) Dinuclear and Trinuclear Complexes. Inorg Chem 2019; 58:10097-10110. [PMID: 31287673 DOI: 10.1021/acs.inorgchem.9b01237] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The uranyl(V) complexes [UO2(dbm)2K(18C6)]2 (dbm = dibenzoylmethanate) and [UO2(L)]3(L = 2-(4-tolyl)-1,3-bis(quinolyl)malondiiminate), exhibiting diamond-shaped U2O2 and triangular-shaped U3O3 cores respectively with 5f1-5f1 and 5f1-5f1-5f1 configurations, have been investigated using relativistic density functional theory (DFT). The bond order and QTAIM analyses reveal that the covalent contribution to the bonding within the oxo cores is slightly more important for U3O3 than for U2O2, in line with the shorter U-O distances existing in the trinuclear complex in comparison to those in the binuclear complex. Using the broken symmetry (BS) approach combined with the B3LYP functional for the calculation of the magnetic exchange coupling constants (J) between the magnetic centers, the antiferromagnetic (AF) character of these complexes was confirmed, the estimated J values being respectively equal to -24.1 and -7.2 cm-1 for the dioxo and trioxo species. It was found that the magnetic exchange is more sensitive to small variations of the core geometry of the dioxo species in comparison to the trioxo species. Although the robust AF exchange coupling within the UxOx cores is generally maintained when small variations of the UOU angle are applied, a weak ferromagnetic character appears in the dioxo species when this angle is higher than 114°, its value for the actual structure being equal to 105.9°. The electronic factors driving the magnetic coupling are discussed.
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Affiliation(s)
- Billel Teyar
- Faculté des Sciences Exactes , Université des Frères Mentouri , Laboratoire de Physique Mathématique et Subatomique LPMS, 25017 Constantine , Algeria.,Université Ziane Achour de Djelfa , 17000 Djelfa , Algeria
| | - Seddik Boucenina
- Faculté des Sciences Exactes , Université des Frères Mentouri , Laboratoire de Physique Mathématique et Subatomique LPMS, 25017 Constantine , Algeria
| | - Lotfi Belkhiri
- Faculté des Sciences Exactes , Université des Frères Mentouri , Laboratoire de Physique Mathématique et Subatomique LPMS, 25017 Constantine , Algeria
| | | | | | - Marinella Mazzanti
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne , Switzerland
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20
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Gui D, Duan W, Shu J, Zhai F, Wang N, Wang X, Xie J, Li H, Chen L, Diwu J, Chai Z, Wang S. Persistent Superprotonic Conductivity in the Order of 10−1 S·cm−1 Achieved Through Thermally Induced Structural Transformation of a Uranyl Coordination Polymer. CCS CHEMISTRY 2019. [DOI: 10.31635/ccschem.019.20190004] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Despite tremendous efforts having been made in the exploration of new high-performance proton-conducting materials, systems with superprotonic conductivity higher than 10−1 S·cm−1 are scarcely reported. We show here the utilization of bridging uranyl oxo atoms, traditionally termed cation–cation interaction (CCI), as the hydrogen bond acceptor to build a dense and ordered hydrogen bond network, affording a unique uranyl-based proton-conducting coordination polymer (H3O)4UO2(PO4)2 (HUP-1). This compound contains a densely connected hydronium network that is substantially stabilized by uranyl oxo atoms and exhibits high proton conductivities over a wide temperature range. At 98 °C, 98% relative humidity, a superprotonic conductivity of 1.02 × 10−1 S·cm−1 is observed for the system, one of the highest values reported for a solid-state proton-conducting material. This property originates from the thermally induced phase transformation from HUP-1 to another uranyl compound also with a CCI bond, (H3O)UO2PO4·(H2O)3 (HUP-2), accompanied by the partial generation of phosphorus acid that is further trapped in the structure of HUP-2, demonstrated by solid-state NMR analysis. The superprotonic conductivity of H3PO4@HUP-2 is persistent under the testing condition.
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21
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Synthesis of Carbon Showing Weak Antiferromagnetic Behavior at a Low Temperature. CONDENSED MATTER 2019. [DOI: 10.3390/condmat4010033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this short communication, we report a new carbon material prepared from meta-linked polyaniline that exhibits weak antiferromagnetic interactions at low temperature. The synthesis of poly(meta-aniline), abbreviated as m-PANI, was conducted using the Ullmann reaction with the aid of Cu+ as a catalyst in the presence of K2CO3. After the generation of radical cations by vapor-phase doping with iodine, carbonization was performed to prepare carbon polyaniline (C-PANI), which comprises condensed benzene rings. Analysis with a superconducting quantum interference device revealed that the resultant carbon exhibits antiferromagnetism at low temperatures. The discovery of this weak antiferromagnetic carbon may contribute to the development of carbon magnets.
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22
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Abstract
Over the past 25 years, magnetic actinide complexes have been the object of considerable attention, not only at the experimental level, but also at the theoretical one. Such systems are of great interest, owing to the well-known larger spin–orbit coupling for actinide ions, and could exhibit slow relaxation of the magnetization, arising from a large anisotropy barrier, and magnetic hysteresis of purely molecular origin below a given blocking temperature. Furthermore, more diffuse 5f orbitals than lanthanide 4f ones (more covalency) could lead to stronger magnetic super-exchange. On the other hand, the extraordinary experimental challenges of actinide complexes chemistry, because of their rarity and toxicity, afford computational chemistry a particularly valuable role. However, for such a purpose, the use of a multiconfigurational post-Hartree-Fock approach is required, but such an approach is computationally demanding for polymetallic systems—notably for actinide ones—and usually simplified models are considered instead of the actual systems. Thus, Density Functional Theory (DFT) appears as an alternative tool to compute magnetic exchange coupling and to explore the electronic structure and magnetic properties of actinide-containing molecules, especially when the considered systems are very large. In this paper, relevant achievements regarding DFT investigations of the magnetic properties of actinide complexes are surveyed, with particular emphasis on some representative examples that illustrate the subject, including actinides in Single Molecular Magnets (SMMs) and systems featuring metal-metal super-exchange coupling interactions. Examples are drawn from studies that are either entirely computational or are combined experimental/computational investigations in which the latter play a significant role.
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23
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Coutinho JT, Perfetti M, Baldoví JJ, Antunes MA, Hallmen PP, Bamberger H, Crassee I, Orlita M, Almeida M, van Slageren J, Pereira LCJ. Spectroscopic Determination of the Electronic Structure of a Uranium Single-Ion Magnet. Chemistry 2019; 25:1758-1766. [PMID: 30403293 DOI: 10.1002/chem.201805090] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Indexed: 11/09/2022]
Abstract
Early actinide ions have large spin-orbit couplings and crystal field interactions, leading to large anisotropies. The success in using actinides as single-molecule magnets has so far been modest, underlining the need for rational strategies. Indeed, the electronic structure of actinide single-molecule magnets and its relation to their magnetic properties remains largely unexplored. A uranium(III) single-molecule magnet, [UIII {SiMe2 NPh}3 -tacn)(OPPh3 )] (tacn=1,4,7-triazacyclononane), has been investigated by means of a combination of magnetic, spectroscopic and theoretical methods to elucidate the origin of its static and dynamic magnetic properties.
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Affiliation(s)
- Joana T Coutinho
- Center for Nuclear Sciences and Technologies (C2TN), Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066, Bobadela LRS, Portugal
| | - Mauro Perfetti
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany.,Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100, Copenhagen, Denmark
| | - José J Baldoví
- Max Planck Institute for the Structure and Dynamics of Matter, Luruper Chaussee 149, 22761, Hamburg, Germany
| | - Maria A Antunes
- Center for Nuclear Sciences and Technologies (C2TN), Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066, Bobadela LRS, Portugal
| | - Philipp P Hallmen
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Heiko Bamberger
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Iris Crassee
- Laboratoire National des Champs Magnétiques Intenses, CNRS-UGA-UPS-INSA-EMFL, 25 Avenue des Martyrs, 38042, Grenoble, France
| | - Milan Orlita
- Laboratoire National des Champs Magnétiques Intenses, CNRS-UGA-UPS-INSA-EMFL, 25 Avenue des Martyrs, 38042, Grenoble, France.,Institute of Physics, Charles University, Ke Karlovu 5, 12116, Praha 2, Czech Republic
| | - Manuel Almeida
- Center for Nuclear Sciences and Technologies (C2TN), Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066, Bobadela LRS, Portugal
| | - Joris van Slageren
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Laura C J Pereira
- Center for Nuclear Sciences and Technologies (C2TN), Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066, Bobadela LRS, Portugal
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24
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Schöne S, März J, Stumpf T, Ikeda-Ohno A. Mixed-valent neptunium oligomer complexes based on cation–cation interactions. Dalton Trans 2019; 48:6700-6703. [DOI: 10.1039/c9dt01056d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Mixing Np(iv) and Np(v) (as neptunyl(v)) results in the formation of tri- and tetranuclear oligomer complexes based on cation–cation interactions (CCIs), indicating the potential of CCIs to expand the oligomer/cluster chemistry of actinides.
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Affiliation(s)
- Sebastian Schöne
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR)
- Institute of Resource Ecology
- 01328 Dresden
- Germany
| | - Juliane März
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR)
- Institute of Resource Ecology
- 01328 Dresden
- Germany
| | - Thorsten Stumpf
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR)
- Institute of Resource Ecology
- 01328 Dresden
- Germany
| | - Atsushi Ikeda-Ohno
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR)
- Institute of Resource Ecology
- 01328 Dresden
- Germany
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25
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Nie MX, Wu QL, Zhao JP, Gao SH, Liu FC. Slow magnetic relaxations in azide or formate bridged chains based on dicubane-like 3d-4f clusters. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.06.037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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26
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Faizova R, White S, Scopelliti R, Mazzanti M. The effect of iron binding on uranyl(v) stability. Chem Sci 2018; 9:7520-7527. [PMID: 30319752 PMCID: PMC6179087 DOI: 10.1039/c8sc02099j] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 07/31/2018] [Indexed: 11/21/2022] Open
Abstract
The tripodal heptadentate Schiff base trensal3– ligand allowed the synthesis and characterization of stable uranyl(v) complexes presenting UO2+···K+ or UO2+···Fe2+ cation–cation interactions. The presence of Fe2+ bound to the uranyl(v) oxygen leads to increased stability with respect to proton induced disproportionation and to an increased range of stability of the uranyl(v) species with respect both to oxidation and reduction reactions.
Here we report the effect of UO2+···Fe2+ cation–cation interactions on the redox properties of uranyl(v) complexes and on their stability with respect to proton induced disproportionation. The tripodal heptadentate Schiff base trensal3– ligand allowed the synthesis and characterization of the uranyl(vi) complexes [UO2(trensal)K], 1 and [UO2(Htrensal)], 2 and of uranyl(v) complexes presenting UO2+···K+ or UO2+···Fe2+ cation–cation interactions ([UO2(trensal)K]K, 3, [UO2(trensal)] [K(2.2.2crypt)][K(2.2.2crypt)], 4, [UO2(trensal)Fe(py)3], 6). The uranyl(v) complexes show similar stability in pyridine solution, but the presence of Fe2+ bound to the uranyl(v) oxygen leads to increased stability with respect to proton induced disproportionation through the formation of a stable Fe2+–UO2+–U4+ intermediate ([UO2(trensal)Fe(py)3U(trensal)]I, 7) upon addition of 2 eq. of PyHCl to 6. The addition of 2 eq. of PyHCl to 3 results in the immediate formation of U(iv) and UO22+ compounds. The presence of an additional UO2+ bound Fe2+ in [(UO2(trensal)Fe(py)3)2Fe(py)3]I2, 8, does not lead to increased stability. Redox reactivity and cyclic voltammetry studies also show an increased range of stability of the uranyl(v) species in the presence of Fe2+ with respect both to oxidation and reduction reactions, while the presence of a proton in complex 2 results in a smaller stability range for the uranyl(v) species. Cyclic voltammetry studies also show that the presence of a Fe2+ cation bound through one trensal3– arm in the trinuclear complex [{UO2(trensal)}2Fe], 5 does not lead to increased redox stability of the uranyl(v) showing the important role of UO2+···Fe2+ cation–cation interactions in increasing the stability of uranyl(v). These results provide an important insight into the role that iron binding may play in stabilizing uranyl(v) compounds in the environmental mineral-mediated reduction of uranium(vi).
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Affiliation(s)
- Radmila Faizova
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne , Switzerland .
| | - Sarah White
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne , Switzerland .
| | - Rosario Scopelliti
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne , Switzerland .
| | - Marinella Mazzanti
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne , Switzerland .
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27
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Faizova R, Scopelliti R, Chauvin AS, Mazzanti M. Synthesis and Characterization of a Water Stable Uranyl(V) Complex. J Am Chem Soc 2018; 140:13554-13557. [PMID: 30289696 DOI: 10.1021/jacs.8b07885] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We have identified a polydentate aminocarboxylate ligand that stabilizes uranyl(V) in water. The mononuclear [UO2(dpaea)]X, (dpaeaH2 = Bis(pyridyl-6-methyl-2-carboxylate)-ethylamine; X = CoCp2*+ or X = K(2.2.2.cryptand) complexes have been isolated from anaerobic organic solution, crystallographically and spectroscopically characterized both in water and organic solution. These complexes disproportionate at pH ≤ 6, but are stable in anaerobic water at pH 7-10 for several days.
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Affiliation(s)
- Radmila Faizova
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne , Switzerland
| | - Rosario Scopelliti
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne , Switzerland
| | - Anne-Sophie Chauvin
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne , Switzerland
| | - Marinella Mazzanti
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne , Switzerland
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28
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Fe(III), Cu(II) and U(VI) binuclear complexes with a new isothiosemicarbazone ligand: Syntheses, characterization, crystal structures, thermal behavior and theoretical investigations. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.07.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Serezhkin VN, Serezhkina LB. Stereochemistry of Americium and Curium in Oxygen-Containing Compounds. RADIOCHEMISTRY 2018. [DOI: 10.1134/s106636221804001x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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30
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Enhancing single-molecule magnet behavior of linear CoII-DyIIICoII complex by introducing bulky diamagnetic moiety. Sci China Chem 2018. [DOI: 10.1007/s11426-018-9310-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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31
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Serezhkin VN, Pushkin DV, Serezhkina LB. Stereochemistry of Plutonium in Oxygen-Containing Compounds. RADIOCHEMISTRY 2018. [DOI: 10.1134/s1066362218030013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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32
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Li XB, Ma Y, Gao EQ. Random Co(II)–Ni(II) Ferromagnetic Chains Showing Coexistent Antiferromagnetism, Metamagnetism, and Single-Chain Magnetism. Inorg Chem 2018; 57:7446-7454. [DOI: 10.1021/acs.inorgchem.8b01053] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Xiu-Bing Li
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
- Jiansu Graphene Reseach Insitute, Changzhou 213149, China
| | - Yu Ma
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan 250014, China
| | - En-Qing Gao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
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33
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Direct observation of pure pentavalent uranium in U 2O 5 thin films by high resolution photoemission spectroscopy. Sci Rep 2018; 8:8306. [PMID: 29844333 PMCID: PMC5974404 DOI: 10.1038/s41598-018-26594-z] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 05/14/2018] [Indexed: 11/16/2022] Open
Abstract
Thin films of the elusive intermediate uranium oxide U2O5 have been prepared by exposing UO3 precursor multilayers to atomic hydrogen. Electron photoemission spectra measured about the uranium 4f core-level doublet contain sharp satellites separated by 7.9(1) eV from the 4f main lines, whilst satellites characteristics of the U(IV) and U(VI) oxidation states, expected respectively at 6.9(1) and 9.7(1) eV from the main 4f lines, are absent. This shows that uranium ions in the films are in a pure pentavalent oxidation state, in contrast to previous investigations of binary oxides claiming that U(V) occurs only as a metastable intermediate state coexisting with U(IV) and U(VI) species. The ratio between the 5f valence band and 4f core-level uranium photoemission intensities decreases by about 50% from UO2 to U2O5, which is consistent with the 5f 2 (UO2) and 5f 1 (U2O5) electronic configurations of the initial state. Our studies conclusively establish the stability of uranium pentoxide.
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Abstract
Single Molecule Magnets (SMMs) based on transition metals and rare earths have been the object of considerable attention for the past 25 years. These systems exhibit slow relaxation of the magnetization, arising from a sizeable anisotropy barrier, and magnetic hysteresis of purely molecular origin below a given blocking temperature. Despite initial predictions that SMMs based on 5f-block elements could outperform most others, the results obtained so far have not met expectations. Exploiting the versatile chemistry of actinides and their favorable intrinsic magnetic properties proved, indeed, to be more difficult than assumed. However, the large majority of studies reported so far have been dedicated to uranium molecules, thus leaving the largest part of the 5f-block practically unexplored. Here, we present a short review of the progress achieved up to now and discuss some options for a possible way forward.
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35
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Wang YQ, Wang K, Gao EQ. Mixed metal CoII1−xZnIIx–organic frameworks based on chains with mixed carboxylate and azide bridges: magnetic coupling and slow relaxation. RSC Adv 2018; 8:22046-22052. [PMID: 35541715 PMCID: PMC9081085 DOI: 10.1039/c8ra03273d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 06/03/2018] [Indexed: 11/25/2022] Open
Abstract
A series of isomorphous three-dimensional metal–organic frameworks [CoII1−xZnIIx(L)(N3)]·H2O (x = 0.26, 0.56 and 0.85) based on bimetallic CoII1−xZnIIx (x = 0.26, 0.56 and 0.85) chains with random metal sites have been synthesized and magnetically characterized. The CoII1−xZnIIx series, which intrinsically feature random anisotropic/diamagnetic sites, shows complex magnetic interactions. By gradually introducing the diamagnetic ZnII ions into the pure anisotropic CoII single-chain magnets system, the ferromagnetic interactions between CoII ions are gradually diluted. Moreover, the slow magnetic relaxation behaviour of the mixed metal CoII1−xZnIIx systems also changes. In this bimetallic series CoII1−xZnIIx, the Co-rich materials exhibit slow relaxation processes that may arise from SCM mechanism, while the ZnII-rich materials show significantly low slow magnetic relaxation. A general trend is that the activation energy and the blocking temperature decrease with the increase in diamagnetic ZnII content, emphasizing the importance of anisotropy for slow relaxation of magnetization. A series of mixed-metal systems consisting of CoII1−xZnIIx chains with (μ-COO)2(μ-EO-N3) bridges were prepared, exhibiting interesting magnetic coupling and slow magnetic relaxation.![]()
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Affiliation(s)
- Yan-Qin Wang
- College of Chemistry and Chemical Engineering
- Inner Mongolia University
- Huhhot
- China
| | - Kun Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200062
- P. R. China
| | - En-Qing Gao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200062
- P. R. China
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36
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Li XB, Cheng AL, Gao EQ. Random mixed-metal Co1−xNix single-chain magnets with simultaneous azide, carboxylate and tetrazolate bridges. Dalton Trans 2018; 47:9685-9692. [DOI: 10.1039/c8dt01676c] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A series of MOFs based on random ferromagnetic Co1−xNix chains with simultaneous azide, carboxylate and tetrazolate bridges show metamagnetism and slow magnetic relaxation with complicated composition dependence and synergistic effects on single-chain slow dynamics.
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Affiliation(s)
- Xiu-Bing Li
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200062
- China
| | - Ai-Ling Cheng
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200062
- China
| | - En-Qing Gao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200062
- China
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37
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Huang YG, Wu SQ, Deng WH, Xu G, Hu FL, Hill JP, Wei W, Su SQ, Shrestha LK, Sato O, Wu MY, Hong MC, Ariga K. Selective CO 2 Capture and High Proton Conductivity of a Functional Star-of-David Catenane Metal-Organic Framework. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1703301. [PMID: 28960582 DOI: 10.1002/adma.201703301] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 08/07/2017] [Indexed: 06/07/2023]
Abstract
Network structures based on Star-of-David catenanes with multiple superior functionalities have been so far elusive, although numerous topologically interesting networks are synthesized. Here, a metal-organic framework featuring fused Star-of-David catenanes is reported. Two triangular metallacycles with opposite handedness are triply intertwined forming a Star-of-David catenane. Each catenane fuses with its six neighbors to generate a porous twofold intercatenated gyroid framework. The compound possesses exceptional stability and exhibits multiple functionalities including highly selective CO2 capture, high proton conductivity, and coexistence of slow magnetic relaxation and long-range ordering.
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Affiliation(s)
- You-Gui Huang
- Xiamen Institute of Rare Earth Materials, Haixi Institute, Chinese Academy of Science, Xiamen, 361021, China
- World Premier International (WPI) Center for Materials Nanoarchitectonics (MANA), Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka Nishi-ku, Fukuoka, 819-0395, Japan
| | - Shu-Qi Wu
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka Nishi-ku, Fukuoka, 819-0395, Japan
| | - Wei-Hua Deng
- Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, Fuzhou, Fujian, 350002, China
| | - Gang Xu
- Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, Fuzhou, Fujian, 350002, China
| | - Fa-Lu Hu
- Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, Fuzhou, Fujian, 350002, China
| | - Jonathan P Hill
- World Premier International (WPI) Center for Materials Nanoarchitectonics (MANA), Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Wei Wei
- Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Sheng-Qun Su
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka Nishi-ku, Fukuoka, 819-0395, Japan
| | - Lok Kumar Shrestha
- World Premier International (WPI) Center for Materials Nanoarchitectonics (MANA), Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Osamu Sato
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka Nishi-ku, Fukuoka, 819-0395, Japan
| | - Ming-Yan Wu
- Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, Fuzhou, Fujian, 350002, China
| | - Mao-Chun Hong
- Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, Fuzhou, Fujian, 350002, China
| | - Katsuhiko Ariga
- World Premier International (WPI) Center for Materials Nanoarchitectonics (MANA), Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
- Graduate School of Frontier Science, The University of Tokyo, Kashiwa, 277-0827, Japan
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38
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Takjoo R, Mague JT. Effect of solvents in mixed-ligand supramolecular self-assembly architectures. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.05.059] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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39
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McAdams SG, Ariciu AM, Kostopoulos AK, Walsh JP, Tuna F. Molecular single-ion magnets based on lanthanides and actinides: Design considerations and new advances in the context of quantum technologies. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.03.015] [Citation(s) in RCA: 222] [Impact Index Per Article: 31.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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40
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Jung J, Atanasov M, Neese F. Ab Initio Ligand-Field Theory Analysis and Covalency Trends in Actinide and Lanthanide Free Ions and Octahedral Complexes. Inorg Chem 2017; 56:8802-8816. [DOI: 10.1021/acs.inorgchem.7b00642] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Julie Jung
- Max Planck Institut für Chemische Energiekonversion, Stifstrasse 34−36, D-45470 Mülheim an der
Ruhr, Germany
| | - Mihail Atanasov
- Max Planck Institut für Chemische Energiekonversion, Stifstrasse 34−36, D-45470 Mülheim an der
Ruhr, Germany
- Institute of General and
Inorganic Chemistry, Bulgarian Academy of Sciences, Akad. Georgi
Bontchev Street 11, 1113 Sofia, Bulgaria
| | - Frank Neese
- Max Planck Institut für Chemische Energiekonversion, Stifstrasse 34−36, D-45470 Mülheim an der
Ruhr, Germany
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41
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Sasnovskaya VD, Kopotkov VA, Talantsev AD, Morgunov RB, Yagubskii EB, Simonov SV, Zorina LV, Mironov VS. Synthesis, Structure, and Magnetic Properties of 1D {[Mn III(CN) 6][Mn II(dapsc)]} n Coordination Polymers: Origin of Unconventional Single-Chain Magnet Behavior. Inorg Chem 2017; 56:8926-8943. [PMID: 28686422 DOI: 10.1021/acs.inorgchem.7b00676] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Two one-dimensional cyano-bridged coordination polymers, namely, {[MnII(dapsc)][MnIII(CN)6][K(H2O)2.75(MeOH)0.5]}n·0.5n(H2O) (I) and {[MnII(dapsc)][MnIII(CN)6][K(H2O)2(MeOH)2]}n (II), based on alternating high-spin MnII(dapsc) (dapsc = 2,6-diacetylpyridine bis(semicarbazone)) complexes and low-spin orbitally degenerate hexacyanomanganate(III) complexes were synthesized and characterized structurally and magnetically. Static and dynamic magnetic measurements reveal a single-chain magnet (SCM) behavior of I with an energy barrier of Ueff ≈ 40 K. Magnetic properties of I are analyzed in detail in terms of a microscopic theory. It is shown that compound I refers to a peculiar case of SCM that does not fall into the usual Ising and Heisenberg limits due to unconventional character of the MnIII-CN-MnII spin coupling resulting from a nonmagnetic singlet ground state of orbitally degenerate complexes [MnIII(CN)6]3-. The prospects of [MnIII(CN)6]3- complex as magnetically anisotropic molecular building block for engineering molecular magnets are critically analyzed.
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Affiliation(s)
- Valentina D Sasnovskaya
- Institute of Problems of Chemical Physics, Russian Academy of Sciences , Semenov's av., 1, Chernogolovka, MD, Russian Federation
| | - Vyacheslav A Kopotkov
- Institute of Problems of Chemical Physics, Russian Academy of Sciences , Semenov's av., 1, Chernogolovka, MD, Russian Federation
| | - Artem D Talantsev
- Institute of Problems of Chemical Physics, Russian Academy of Sciences , Semenov's av., 1, Chernogolovka, MD, Russian Federation
| | - Roman B Morgunov
- Institute of Problems of Chemical Physics, Russian Academy of Sciences , Semenov's av., 1, Chernogolovka, MD, Russian Federation
| | - Eduard B Yagubskii
- Institute of Problems of Chemical Physics, Russian Academy of Sciences , Semenov's av., 1, Chernogolovka, MD, Russian Federation
| | - Sergey V Simonov
- Institute of Solid State Physics, Russian Academy of Sciences , Academician Ossipyan str., 2, Chernogolovka, MD, Russian Federation
| | - Leokadiya V Zorina
- Institute of Solid State Physics, Russian Academy of Sciences , Academician Ossipyan str., 2, Chernogolovka, MD, Russian Federation
| | - Vladimir S Mironov
- Shubnikov Institute of Crystallography of Federal Scientific Research Centre "Crystallography and Photonics", Russian Academy of Sciences , Leninskii av. 59, Moscow, Russian Federation
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42
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Zhao XH, Deng LD, Zhou Y, Shao D, Wu DQ, Wei XQ, Wang XY. Slow Magnetic Relaxation in One-Dimensional Azido-Bridged CoII Complexes. Inorg Chem 2017; 56:8058-8067. [DOI: 10.1021/acs.inorgchem.7b00736] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xin-Hua Zhao
- State Key Laboratory of Coordination Chemistry,
Collaborative Innovation Center of Advanced Microstructures, School
of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Lin-Dan Deng
- State Key Laboratory of Coordination Chemistry,
Collaborative Innovation Center of Advanced Microstructures, School
of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Yan Zhou
- State Key Laboratory of Coordination Chemistry,
Collaborative Innovation Center of Advanced Microstructures, School
of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Dong Shao
- State Key Laboratory of Coordination Chemistry,
Collaborative Innovation Center of Advanced Microstructures, School
of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Dong-Qing Wu
- State Key Laboratory of Coordination Chemistry,
Collaborative Innovation Center of Advanced Microstructures, School
of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Xiao-Qin Wei
- State Key Laboratory of Coordination Chemistry,
Collaborative Innovation Center of Advanced Microstructures, School
of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Xin-Yi Wang
- State Key Laboratory of Coordination Chemistry,
Collaborative Innovation Center of Advanced Microstructures, School
of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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43
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Biswas S, Das S, Acharya J, Kumar V, van Leusen J, Kögerler P, Herrera JM, Colacio E, Chandrasekhar V. Homometallic DyIII
Complexes of Varying Nuclearity from 2 to 21: Synthesis, Structure, and Magnetism. Chemistry 2017; 23:5154-5170. [DOI: 10.1002/chem.201700471] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Sourav Biswas
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur 208016 India
| | - Sourav Das
- Department of Chemistry; Institute of Infrastructure Technology Research and Management; Ahmedabad 380026 India
| | - Joydev Acharya
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur 208016 India
| | - Vierandra Kumar
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur 208016 India
| | - Jan van Leusen
- Institut für Anorganische Chemie; RWTH Aachen University; 52074 Aachen Germany
| | - Paul Kögerler
- Institut für Anorganische Chemie; RWTH Aachen University; 52074 Aachen Germany
| | - Juan Manuel Herrera
- Departamento de Química Inorganica; Facultad de Ciencias; Universidad de Granada; 18071 Granada Spain
| | - Enrique Colacio
- Departamento de Química Inorganica; Facultad de Ciencias; Universidad de Granada; 18071 Granada Spain
| | - Vadapalli Chandrasekhar
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur 208016 India
- National Institute of Science Education and Research; Institute of Physics Campus, Sachivalaya Marg; Bhubaneswar 751 005 India
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44
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Neutral Low-Dimensional Assemblies of a Mn(III) Schiff Base Complex and Octacyanotungstate(V): Synthesis, Characterization, and Magnetic Properties. MAGNETOCHEMISTRY 2017. [DOI: 10.3390/magnetochemistry3020016] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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45
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Thuéry P, Harrowfield J. Recent advances in structural studies of heterometallic uranyl-containing coordination polymers and polynuclear closed species. Dalton Trans 2017; 46:13660-13667. [DOI: 10.1039/c7dt03105j] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A survey is given of recent original structural results on heterometallic species incorporating uranyl ions, particularly with carboxylate ligands.
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46
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Felder JB, Smith MD, zur Loye HC. Supercritical synthesis and topological analysis of K5U5O17(OH). CrystEngComm 2017. [DOI: 10.1039/c7ce00746a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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47
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Chatelain L, Tuna F, Pécaut J, Mazzanti M. Synthesis and SMM behaviour of trinuclear versus dinuclear 3d–5f uranyl(v)–cobalt(ii) cation–cation complexes. Dalton Trans 2017; 46:5498-5502. [DOI: 10.1039/c6dt04558h] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Trinuclear versus dinuclear heterodimetallic UVO2+⋯Co2+ complexes were selectively assembled via a cation–cation interaction by tuning the ligand. The trimeric complex, exhibits magnetic exchange and slow relaxation providing the first example of a U–Co exchange-coupled SMM.
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Affiliation(s)
- Lucile Chatelain
- Institut des Sciences et Ingénierie Chimiques
- Ecole Polytechnique Fédérale de Lausanne (EPFL)
- CH-1015 Lausanne
- Switzerland
| | - Floriana Tuna
- School of Chemistry and Photon Science Institute
- The University of Manchester
- Manchester
- UK
| | | | - Marinella Mazzanti
- Institut des Sciences et Ingénierie Chimiques
- Ecole Polytechnique Fédérale de Lausanne (EPFL)
- CH-1015 Lausanne
- Switzerland
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48
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Wang YQ, Yue Q, Gao EQ. Effects of Metal Blending in Random Bimetallic Single-Chain Magnets: Synergetic, Antagonistic, or Innocent. Chemistry 2016; 23:896-904. [DOI: 10.1002/chem.201604202] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 10/26/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Yan-Qin Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, College of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200062 P.R. China
- College of Chemistry and Chemical Engineering, Key Laboratory of Nanomagnetic and Functional Materials; Inner Mongolia University; Huhhot 010021 P.R. China
| | - Qi Yue
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, College of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200062 P.R. China
| | - En-Qing Gao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, College of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200062 P.R. China
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49
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Two actinide-organic frameworks constructed by a tripodal flexible ligand: Occurrence of infinite {(UO2)O2(OH)3}4n and hexanuclear {Th6O4(OH)4} motifs. J SOLID STATE CHEM 2016. [DOI: 10.1016/j.jssc.2016.07.026] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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50
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Single-Chain Magnets Based on Octacyanotungstate with the Highest Energy Barriers for Cyanide Compounds. Sci Rep 2016; 6:24372. [PMID: 27071451 PMCID: PMC4829875 DOI: 10.1038/srep24372] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Accepted: 03/23/2016] [Indexed: 12/18/2022] Open
Abstract
By introducing large counter cations as the spacer, two isolated 3, 3-ladder compounds, (Ph4P)[CoII(3-Mepy)2.7(H2O)0.3WV(CN)8]·0.6H2O (1) and (Ph4As)[CoII(3-Mepy)3WV(CN)8] (2, 3-Mepy = 3-methylpyridine), were synthesized and characterized. Static and dynamic magnetic characterizations reveal that compounds 1 and 2 both behave as the single-chain magnets (SCMs) with very high energy barriers: 252(9) K for 1 and 224(7) K for 2, respectively. These two compounds display the highest relaxation barriers for cyano-bridged SCMs and are preceded only by two cobalt(II)-radical compounds among all SCMs. Meanwhile, a large coercive field of 26.2 kOe (1) and 22.6 kOe (2) were observed at 1.8 K.
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