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Braun J, Powell AK, Unterreiner AN. Gaining Insights into the Interplay between Optical and Magnetic Properties in Photoexcited Coordination Compounds. Chemistry 2024; 30:e202400977. [PMID: 38693865 DOI: 10.1002/chem.202400977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 04/19/2024] [Accepted: 04/30/2024] [Indexed: 05/03/2024]
Abstract
We describe early and recent advances in the fascinating field of combined magnetic and optical properties of inorganic coordination compounds and in particular of 3d-4f single molecule magnets. We cover various applied techniques which allow for the correlation of results obtained in the frequency and time domain in order to highlight the specific properties of these compounds and the future challenges towards multidimensional spectroscopic tools. An important point is to understand the details of the interplay of magnetic and optical properties through performing time-resolved studies in the presence of external fields especially magnetic ones. This will enable further exploration of this fundamental interactions i. e. the two components of electromagnetic radiation influencing optical properties.
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Affiliation(s)
- Jonas Braun
- Institute of Inorganic Chemistry (AOC), Karlsruhe Institute of Technology (KIT), Kaiserstr. 12, 76131, Karlsruhe, Germany
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Kaiserstr. 12, 76131, Karlsruhe, Germany
- Institute for Quantum Materials and Technologies (IQMT), Karlsruhe Institute of Technology (KIT), Kaiserstr. 12, 76131, Karlsruhe, Germany
| | - Annie K Powell
- Institute of Inorganic Chemistry (AOC), Karlsruhe Institute of Technology (KIT), Kaiserstr. 12, 76131, Karlsruhe, Germany
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Kaiserstr. 12, 76131, Karlsruhe, Germany
- Institute for Quantum Materials and Technologies (IQMT), Karlsruhe Institute of Technology (KIT), Kaiserstr. 12, 76131, Karlsruhe, Germany
| | - Andreas-Neil Unterreiner
- Institute of Physical Chemistry (IPC), Karlsruhe Institute of Technology (KIT), Kaiserstr. 12, 76131, Karlsruhe, Germany
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2
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Liu D, Guo X, Zhang X, Al-Kahtani AA, Chibotaru LF. Building Molecular Nanomagnets by Encapsulating Lanthanide Ions in Boron Nitride Nanotubes: Ab Initio Investigation. Inorg Chem 2024; 63:3769-3780. [PMID: 38346334 DOI: 10.1021/acs.inorgchem.3c03930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2024]
Abstract
Lanthanide-based single-ion magnets have attracted much interest due to their great potential for information storage at the level of one molecule. Among various strategies to enhance magnetization blocking in such complexes, the synthesis of axially symmetric compounds is regarded as the most promising. Here, we investigate theoretically the magnetization blocking of several lanthanide ions (Tb3+, Dy3+, Ho3+, Er3+, and Tm3+) encapsulated in highly symmetric zigzag boron nitride nanotubes (BNNTs) of different diameters with ab initio methodology. We found that Tb3+@(7,0)BNNT, Dy3+@(7,0)BNNT, and Tm3+@(5,0)BNNT are suitable SIM candidates, while the other investigated complexes from this series show no signs of magnetization blocking owing to a hard competition between contributions to the crystal field of the lanthanide ion from neighboring and more distant atoms of the nanotube.
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Affiliation(s)
- Dan Liu
- School of Sciences, Great Bay University, Dongguan 523000, China
- Great Bay Institute for Advanced Study, Dongguan 523000, China
- Institute of Flexible Electronics, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an, Shaanxi 710072, China
| | - Xuefeng Guo
- Institute of Flexible Electronics, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an, Shaanxi 710072, China
| | - Xiaoyong Zhang
- School of Sciences, Great Bay University, Dongguan 523000, China
- Great Bay Institute for Advanced Study, Dongguan 523000, China
| | - Abdullah A Al-Kahtani
- Chemistry Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Liviu F Chibotaru
- Theory of Nanomaterials Group, Katholieke Universiteit Leuven, Celestijnenlaan 200F, Leuven B-3001, Belgium
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3
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Bonnenfant C, Vadra N, Rouzières M, Clérac R, Cukiernik FD, Alborés P. Alkyl chain length influence of the functionalized diethanolamine ligand on the slow relaxation of the magnetization in {CoIII3DyIII3} complexes. Dalton Trans 2024; 53:2815-2825. [PMID: 38230564 DOI: 10.1039/d3dt03656a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2024]
Abstract
We report the synthesis, structural characterization and magnetic properties of a series of Co(III)/Dy(III) complexes built up from an N-alkyl derivatized amino-alcohol ligand diethanolamine, functionalized with CnH2n+1 alkyl chains (n = 3, 4, 6, 8 and 10). While n = 3 afforded a butterfly {CoIII2DyIII2} core, the other alkyl chains (n = 4, 6, 8) afforded hexanuclear triangle-in-triangle {CoIII3DyIII3} complexes as shown by single-crystal X-ray determinations. Infrared spectroscopy allows us to characterize the C10 derivative complex, which did not crystallize. Magnetic ac susceptibility data collected below 10 K at driving frequencies up to 10 kHz under zero-dc field and up to 1 T provide insight into the SMM behaviour of the studied complexes. The characteristic time of the magnetization dynamics can be understood in terms of the competing Raman, Direct and Orbach-like mechanisms. A relationship between the magnetization dynamics within the family of complexes and the increasing alkyl chain length is discussed.
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Affiliation(s)
- Chloë Bonnenfant
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE (CONICET), Facultad de Ciencias Exactas y Naturales Universidad de Buenos Aires, Pabellón 2, Ciudad Universitaria, C1428EHA Buenos Aires, Argentina.
- On leave from Ecole Européene d'Ingénieurs de Chimie, Polymères et Matériaux, Université de Strasbourg, France
| | - Nahir Vadra
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE (CONICET), Facultad de Ciencias Exactas y Naturales Universidad de Buenos Aires, Pabellón 2, Ciudad Universitaria, C1428EHA Buenos Aires, Argentina.
| | | | - Rodolphe Clérac
- Univ. Bordeaux, CNRS, CRPP, UMR 5031, F-33600 Pessac, France
| | - Fabio D Cukiernik
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE (CONICET), Facultad de Ciencias Exactas y Naturales Universidad de Buenos Aires, Pabellón 2, Ciudad Universitaria, C1428EHA Buenos Aires, Argentina.
| | - Pablo Alborés
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE (CONICET), Facultad de Ciencias Exactas y Naturales Universidad de Buenos Aires, Pabellón 2, Ciudad Universitaria, C1428EHA Buenos Aires, Argentina.
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4
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Armenis AS, Vipanchi V, Pantelis KN, Cunha-Silva L, Vignesh KR, Alexandropoulos DI, Stamatatos TC. Slow Magnetization Relaxation in a Family of Triangular {Co III 2 Ln III } Clusters: The Effect of Diamagnetic Co III Ions on the Ln III Magnetic Dynamics. Chemistry 2023; 29:e202302337. [PMID: 37638486 DOI: 10.1002/chem.202302337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 08/25/2023] [Accepted: 08/28/2023] [Indexed: 08/29/2023]
Abstract
The first use of the Schiff base chelate N-naphthalidene-o-aminophenol (naphH2 ) in Co/Ln chemistry has afforded a family of isostructural [CoIII 2 LnIII (OMe)2 (naph)2 (O2 CMe)3 (MeOH)2 ] (Ln=Tb, Dy and Er) complexes, revealing a rare {CoIII 2 Ln(μ3 -OMe)}8+ triangular core composed of two diamagnetic CoIII ions and a 4f-ion with slightly distorted square antiprismatic geometry. Alternating current (ac) magnetic susceptibility studies revealed that {Co2 Dy}, and its magnetic diluted analogue {Co2 Dy0.05 Y0.95 }, behave as mononuclear single-molecule magnets (SMMs) with similar energy barriers for the magnetization reversal, Ueff , of ~85-90 K. SMM properties were also detected for {Co2 Er}, with the compound exhibiting a Ueff of 18.7 K under an applied magnetic field of 800 Oe. To interpret the experimental magnetic results, ab initio CASSCF/RASSI-SO and DFT calculations were performed as a means of exploring the single-ion characteristics of LnIII ions and comprehend the role of the diamagnetic CoIII ions in the magnetization relaxation of the three heterometallic compounds.
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Affiliation(s)
| | - Vikram Vipanchi
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali Sector-81, Knowledge city, S.A.S. Nagar, Mohali, 140306, Punjab, India
| | | | - Luís Cunha-Silva
- LAQV/REQUIMTE & Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007, Porto, Portugal
| | - Kuduva R Vignesh
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali Sector-81, Knowledge city, S.A.S. Nagar, Mohali, 140306, Punjab, India
| | | | - Theocharis C Stamatatos
- Department of Chemistry, University of Patras, 265 04, Patras, Greece
- Institute of Chemical Engineering Sciences, Foundation for Research and Technology - Hellas (FORTH/ICE - HT) Platani, P.O. Box 1414, 26504, Patras, Greece
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5
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Swain A, Sharma T, Rajaraman G. Strategies to quench quantum tunneling of magnetization in lanthanide single molecule magnets. Chem Commun (Camb) 2023; 59:3206-3228. [PMID: 36789911 DOI: 10.1039/d2cc06041h] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
Enhancing blocking temperature (TB) is one of the holy grails in Single Molecule Magnets(SMMs), as any future potential application in this class of molecules is directly correlated to this parameter. Among many factors contributing to a reduction of TB value, Quantum Tunnelling of Magnetisation (QTM), a phenomenon that is a curse or a blessing based on the application sought after, tops the list. Theoretical tools based on density functional and ab initio CASSCF/RASSI-SO methods have played a prominent role in estimating various spin Hamiltonian parameters and establishing the mechanism of magnetization relaxation in this class of molecules. Particularly, various strategies to quench QTM effects go hand-in-hand with experiments, and different methods proposed to quell QTM effects are scattered in the literature. In this perspective, we have explored various approaches that are proposed in the literature to quench QTM effects, and these include the role of (i) local symmetry of lanthanides, (ii) super-exchange interaction in {3d-4f} complexes, (iii) direct-exchange interaction in {radical-4f} and metal-metal bonded complexes to suppress the QTM, (iv) utilizing external stimuli such as an electric field or pressure to modulate the QTM and (v) avoiding QTM effects by stabilising toroidal states in 4f and {3d-4f} clusters. We believe the strategies summarized here will help to design new-generation SMMs.
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Affiliation(s)
- Abinash Swain
- Department of Chemistry, IIT Bombay, Powai, Mumbai - 400076, India.
| | - Tanu Sharma
- Department of Chemistry, IIT Bombay, Powai, Mumbai - 400076, India.
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6
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Astaf'eva TV, Yambulatov DS, Nikolaevskii SA, Shmelev MA, Babeshkin KA, Efimov NN, Poddel'sky AI, Eremenko IL, Kiskin MA. The First Tetranuclear Iron(II)‐Gadolinium(III) Carboxylate Complex [Fe
2
Gd
2
(piv)
10
(bpy)
2
]: Synthesis, Structure Elucidation and Magnetic Properties. ChemistrySelect 2022. [DOI: 10.1002/slct.202203612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Tatiana V. Astaf'eva
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences Leninsky prosp. 31 119991 Moscow Russian Federation
| | - Dmitriy S. Yambulatov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences Leninsky prosp. 31 119991 Moscow Russian Federation
| | - Stanislav A. Nikolaevskii
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences Leninsky prosp. 31 119991 Moscow Russian Federation
| | - Maxim A. Shmelev
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences Leninsky prosp. 31 119991 Moscow Russian Federation
| | - Konstantin A. Babeshkin
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences Leninsky prosp. 31 119991 Moscow Russian Federation
| | - Nikolay N. Efimov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences Leninsky prosp. 31 119991 Moscow Russian Federation
| | - Andrey I. Poddel'sky
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences Leninsky prosp. 31 119991 Moscow Russian Federation
| | - Igor L. Eremenko
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences Leninsky prosp. 31 119991 Moscow Russian Federation
| | - Mikhail A. Kiskin
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences Leninsky prosp. 31 119991 Moscow Russian Federation
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7
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Chiboub Fellah FZ, Pointillart F, Guizouarn T, Roisnel T, Dege N, Chiboub Fellah A, Hassaine R. Photophysical Properties and Single‐Molecule Magnet Behavior in Heterobimetallic 3d4 f Schiff Base Complexes. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | - Fabrice Pointillart
- Univ Rennes CNRS ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226 35000 Rennes France
| | - Thierry Guizouarn
- Univ Rennes CNRS ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226 35000 Rennes France
| | - Thierry Roisnel
- Univ Rennes CNRS ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226 35000 Rennes France
| | - Necmi Dege
- Ondokuz Mayis University Faculty of Arts and Sciences Department of Physics 55200 Atakum Samsun Turkey
| | - Abdelghani Chiboub Fellah
- Laboratoire de Valorisation des Ressources en Eau Équipe de chimie de coordination Université de Tlemcen, BP 119 13000 Tlemcen Algeria
| | - Ridha Hassaine
- Laboratoire de Catalyse et Synthèse en Chimie Organique Université de Tlemcen, BP 119 13000 Tlemcen Algeria
- Centre de Recherche Scientifique et Technique en Analyses Physico – ChimiquesCRAPC, Bou-Ismail BP 384 42004 Tipaza Algeria
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8
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Sheikh JA, Jena HS, Konar S. Co 3Gd 4 Cage as Magnetic Refrigerant and Co 3Dy 3 Cage Showing Slow Relaxation of Magnetisation. Molecules 2022; 27:molecules27031130. [PMID: 35164395 PMCID: PMC8840112 DOI: 10.3390/molecules27031130] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/31/2022] [Accepted: 02/01/2022] [Indexed: 02/04/2023] Open
Abstract
Two structurally dissimilar 3d-4f cages having the formulae [(CoIII)3Gd4(μ3-OH)2(CO3) (O2CtBu)11(teaH)3]·5H2O (1) and [(CoIII)3Dy3(μ3-OH)4(O2CtBu)6(teaH)3]·(NO3)2·H2O (2) have been isolated under similar reaction conditions and stoichiometry of the reactants. The most important factor for structural diversity seems to be the incorporation of one μ3-carbonate anion in 1 and not in 2. Co atoms are in a +3 oxidation state in both complexes, as shown by the Bond Valence Sum (BVS) calculations and bond lengths, and as further supported by magnetic measurements. Co3Gd4 displays a significant magnetocaloric effect (−∆Sm = 25.67 J kg−1 K−1), and Co3Dy3 shows a single molecule magnet (SMM) behavior.
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Affiliation(s)
- Javeed Ahmad Sheikh
- Department of Chemistry, Government, College for Women, Constituent College of Cluster University, M. A. Road, Srinagar 190001, Jammu and Kashmir, India
- Department of Chemistry, IISER Bhopal, Bhopal By-Pass Road, Bhopal 462066, Madhya Pradesh, India; or
- Correspondence: (J.A.S.); (S.K.); Tel.: +91-7889872799 (J.A.S.)
| | - Himanshu Sekhar Jena
- Department of Chemistry, IISER Bhopal, Bhopal By-Pass Road, Bhopal 462066, Madhya Pradesh, India; or
- Department of Chemistry, Ghent University, Krijgslaan 281-S3 B, 9000 Ghent, Belgium
| | - Sanjit Konar
- Department of Chemistry, IISER Bhopal, Bhopal By-Pass Road, Bhopal 462066, Madhya Pradesh, India; or
- Correspondence: (J.A.S.); (S.K.); Tel.: +91-7889872799 (J.A.S.)
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9
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Shen L, Hu P, Yang XJ, Xu H, Huang YL, Redshaw C, Zhang QL. Structural and magnetic characterization of tetranuclear [Ni(II)2Ln(III)2] complexes bearing tetra-branched Schiff base ligands. Polyhedron 2022. [DOI: 10.1016/j.poly.2021.115584] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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Koroteev PS, Dobrokhotova ZV, Ilyukhin AB, Belova EV, Yapryntsev AD, Rouzières M, Clérac R, Efimov NN. Tetranuclear Cr-Ln ferrocenecarboxylate complexes with a defect-dicubane structure: synthesis, magnetism, and thermolysis. Dalton Trans 2021; 50:16990-16999. [PMID: 34612322 DOI: 10.1039/d1dt02562g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Using ferrocenecarboxylic acid (FcCO2H) and triethanolamine (H3tea) as ligands, the isostructural heterotrimetallic complexes [LnIII2CrIII2(OH)2(FcCO2)4(NO3)2(Htea)2]·2MePh·2THF (Ln = Tb (1), Dy (2), Ho (3), Er (4), and Y (5); Fc = (η5-C5H4)(η5-C5H5)Fe; H3tea = N(CH2CH2OH)3) were obtained. In all of the complexes which possess a defective dicubane structure, two doubly deprotonated triethanolamine ligands chelate the chromium ions. However, during the synthesis of 1, an isomeric complex 1a in which Tb3+ is chelated by triethanolamine as a tetradentate ligand, was also isolated as a few single crystals. Magnetic susceptibility measurements revealed dominant antiferromagnetic interactions in the {LnIII2CrIII2} cores of 1-4 leading to the formation of complexes with an uncompensated magnetic moment, while weak Cr-Cr ferromagnetic interactions were detected in the Y analogue. Complexes 1, 2, and 3 exhibit single-molecule magnet properties dominated by an Orbach-type relaxation mechanism with magnetization reversal barriers (Δ/kB) estimated around 54, 75, and 47 K, respectively. The Dy complex exhibits a magnetization hysteresis in an applied magnetic field at temperatures below 4 K. Thermolysis of the complexes was studied by TGA and DSC techniques; the final products obtained under an air atmosphere contain mixed oxide Cr0.75Fe1.25O3 and heterotrimetallic oxide LnCr1-xFexO3 (with x ≈ 0.75) phases.
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Affiliation(s)
- Pavel S Koroteev
- N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, GSP-1, Leninsky prosp. 31, 119991 Moscow, Russian Federation.
| | - Zhanna V Dobrokhotova
- N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, GSP-1, Leninsky prosp. 31, 119991 Moscow, Russian Federation.
| | - Andrey B Ilyukhin
- N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, GSP-1, Leninsky prosp. 31, 119991 Moscow, Russian Federation.
| | - Ekaterina V Belova
- N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, GSP-1, Leninsky prosp. 31, 119991 Moscow, Russian Federation. .,Lomonosov Moscow State University, Department of Chemistry, GSP-1, Leninskie Gory 1/3, 119991 Moscow, Russian Federation
| | - Alexey D Yapryntsev
- N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, GSP-1, Leninsky prosp. 31, 119991 Moscow, Russian Federation.
| | - Mathieu Rouzières
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, UMR 5031, 33600 Pessac, France.
| | - Rodolphe Clérac
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, UMR 5031, 33600 Pessac, France.
| | - Nikolay N Efimov
- N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, GSP-1, Leninsky prosp. 31, 119991 Moscow, Russian Federation.
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11
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Peng Y, Kaemmerer H, Powell AK. From the {Fe III 2 Ln 2 } Butterfly's Perspective: the Magnetic Benefits and Challenges of Cooperativity within 3 d-4 f Based Coordination Clusters. Chemistry 2021; 27:15043-15065. [PMID: 34582064 PMCID: PMC8597143 DOI: 10.1002/chem.202102962] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Indexed: 11/19/2022]
Abstract
In this Review we discuss the tuning handles which can be used to steer the magnetic properties of FeIII‐4 f “butterfly” compounds. The majority of presented compounds were produced in the context of project A3 “Di‐ to tetranuclear compounds incorporating highly anisotropic paramagnetic metal ions” within the SFB/TRR88 “3MET”. These contain {FeIII2Ln2} cores encapsulated in ligand shells which are easy to tune in a “test‐bed” system. We identify the following advantages and variables in such systems: (i) the complexes are structurally simple usually with one crystallographically independent FeIII and LnIII, respectively. This simplifies theory and anaylsis; (ii) choosing Fe allows 57Fe Mössbauer spectroscopy to be used as an additional technique which can give information about oxidation levels and spin states, local moments at the iron nuclei and spin‐relaxation and, more importantly, about the anisotropy not only of the studied isotope, but also of elements interacting with this isotope; (iii) isostructural analogues with all the available (i. e. not Pm) 4 f ions can be synthesised, enabling a systematic survey of the influence of the 4 f ion on the electronic structure; (iv) this cluster type is obtained by reacting [FeIII3O(O2CR)6(L)3](X) (X=anion, L=solvent such as H2O, py) with an ethanolamine‐based ligand L′ and lanthanide salts. This allows to study analogues of [FeIII2Ln2(μ3‐OH)2(L′)2(O2CR)6] using the appropriate iron trinuclear starting materials. (v) the organic main ligand can be readily functionalised, facilitating a systematic investigation of the effect of organic substituents on the ligands on the magnetic properties of the complexes. We describe and discuss 34 {MIII2Ln2} (M=Fe or in one case Al) butterfly compounds which have been reported up to 2020. The analysis of these gives perspectives for designing new SMM systems with specific electronic and magnetic signatures
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Affiliation(s)
- Yan Peng
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstr. 15, 76131, Karlsruhe, Germany.,Institute for Nanotechnology (INT), Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany.,School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, P.R. China
| | - Hagen Kaemmerer
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstr. 15, 76131, Karlsruhe, Germany.,Institute for Quantum Materials and Technologies (IQMT), Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Annie K Powell
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstr. 15, 76131, Karlsruhe, Germany.,Institute for Nanotechnology (INT), Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany.,Institute for Quantum Materials and Technologies (IQMT), Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
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12
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Swain A, Martin R, Vignesh KR, Rajaraman G, Murray KS, Langley SK. Enhancing the barrier height for magnetization reversal in 4d/4f RuIII2LnIII2 "butterfly" single molecule magnets (Ln = Gd, Dy) via targeted structural alterations. Dalton Trans 2021; 50:12265-12274. [PMID: 34519749 DOI: 10.1039/d1dt01770e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A series of 4d-4f {RuIII2DyIII2} and {RuIII2GdIII2} 'butterfly' (rhombohedral) complexes have been synthesized and characterized and their magnetic properties investigated. Earlier, we have reported the first 4d/4f SMM - [RuIII2DyIII2(OMe)2(O2CPh)4(mdea)2(NO3)2] (1Dy) with a Ueff value of 10.7 cm-1. As the structural distortion around the DyIII centres and the RuIII⋯DyIII exchange interactions are key to enhancing the anisotropy, in this work we have synthesised three more {Ru2Dy2} butterfly complexes where structural alteration around the DyIII centres and alterations to the bridging groups are performed with an aim to improve the magnetic properties. The new complexes reported here are [Ru2Dy2(OMe)2(O2C(4-Me-Ph)4(mdea)2(MeOH)4], 2Dy, [Ru2Dy2(OMe)2(O2C(2-Cl,4,5-F-Ph)4(mdea)2(NO3)2], 3Dy, and an acac derivative [Ru2Dy2(OMe)2(acac)4(NO3)2(edea)2], 4Dy, where acac- = acetylacetonate, edea2- = N-ethyldiethanolamine dianion. Complex 2Dy describes alteration in the DyIII centers, while complexes 3Dy and 4Dy are aimed to alter the RuIII⋯DyIII exchange pathways. To ascertain the 4d-4f exchange, the Gd-analogues of 1Dy and 4Dy were synthesised [Ru2Gd2(OMe)2(O2CPh)4(mdea)2(NO3)2], 1Gd, [Ru2Gd2(OMe)2(acac)4(NO3)2(edea)2], 4Gd. Both ac and dc susceptibility studies were performed on all these complexes, and out-of-phase signals were observed for 3Dy in zero-field while 2Dy and 4Dy show out-of-phase signals in the presence of an applied field. Complex 3Dy reveals a barrier height Ueff of 45 K. To understand the difference in the magnetic dynamic behavior compared to our earlier reported {RuIII2DyIII2} analogue, detailed theoretical calculations based on ab initio CASSCF/RASSI-SO calculations have been performed. Calculations reveal that the JRu⋯Dy value varies from -1.8 cm-1 (4Dy) to -2.4 cm-1 (3Dy). These values are also affirmed by DFT calculations performed on the corresponding GdIII analogues. The origin of the largest barrier and observation of slow magnetic relaxation in 3Dy is routed back to the stronger single-ion anisotropy and stronger JRu⋯Dy exchange which quenches the QTM effects more efficiently. This study thus paves the way forward to tune local structure around the LnIII center and the exchange pathway to enhance the SMM characteristics in other {3d-4f}/{4d-4f} SMMs.
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Affiliation(s)
- Abinash Swain
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai-400076, India.
| | - Robert Martin
- School of Science and the Environment, Division of Chemistry, Manchester Metropolitan University, Manchester, M15 6BH, UK.
| | - Kuduva R Vignesh
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai-400076, India.
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai-400076, India.
| | - Keith S Murray
- School of Chemistry, 17 Rainforest Walk, Monash University, Clayton, Victoria 3800, Australia.
| | - Stuart K Langley
- School of Science and the Environment, Division of Chemistry, Manchester Metropolitan University, Manchester, M15 6BH, UK.
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13
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Flores González J, Lefeuvre B, Degraeve B, Cador O, Pointillart F. Study of the influence of nuclear spin and dilution over the slow relaxation in a 3d4f heterobimetallic single-molecule magnet. Dalton Trans 2021; 50:11466-11471. [PMID: 34346449 DOI: 10.1039/d1dt01608c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The effects of isotopic enrichment and magnetic dilution have been investigated in a heterobimetallic complex of formula [Zn2L2ADyCl3]·2H2O (ADyZn2) (A = 162 and 163) presenting slow relaxation of the magnetization. Isotopic substitution for 162Dy (I = 0) and 163Dy (I = 5/2) leads to a shift in the relaxation times depending on the suppression or enhancement of the hyperfine interactions. The release of the dipolar interactions through magnetic dilution in a Y(iii)-based matrix enhances the slow relaxation of the magnetization and the visibility of the nuclear spin effect. A comparison of the hysteresis loop at 0.5 K for bulk and diluted analogues of pure isotopically enriched complexes suggested a role of the nuclear spin in the interaction between the active system and the matrix.
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Affiliation(s)
- Jessica Flores González
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
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14
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Funes AV, Perfetti M, Kern M, Rußegger N, Carrella L, Rentschler E, Slageren J, Alborés P. Single Molecule Magnet Features in the Butterfly [Co
III
2
Ln
III
2
] Pivalate Family with Alcohol‐Amine Ligands. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100467] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Alejandro V. Funes
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE (CONICET) Facultad de Ciencias Exactas y Naturales Universidad de Buenos Aires Pabellón 2, Ciudad Universitaria C1428EHA Buenos Aires Argentina
| | - Mauro Perfetti
- Institut für Physikalische Chemie Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
- Department of Chemistry “U. Schiff” Via della Lastruccia 3–13 50019 Sesto Fiorentino (FI) Italy
| | - Michal Kern
- Institute für Intelligente Sensorik Universität Stuttgart 70569 Stuttgart Germany
| | - Nadine Rußegger
- Institut für Physikalische Chemie Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Luca Carrella
- Institut für Anorganische Chemie und Analytische Chemie Johannes Gutenberg Universität Mainz Duesbergweg 10–12 55128 Mainz Germany
| | - Eva Rentschler
- Institut für Anorganische Chemie und Analytische Chemie Johannes Gutenberg Universität Mainz Duesbergweg 10–12 55128 Mainz Germany
| | - Joris Slageren
- Institut für Physikalische Chemie Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Pablo Alborés
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE (CONICET) Facultad de Ciencias Exactas y Naturales Universidad de Buenos Aires Pabellón 2, Ciudad Universitaria C1428EHA Buenos Aires Argentina
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15
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Biswas M, Sañudo EC, Ray D. Carboxylate-Decorated Aggregation of Octanuclear Co 4Ln 4 (Ln = Dy, Ho, Yb) Complexes from Ligand-Controlled Hydrolysis: Synthesis, Structures, and Magnetic Properties. Inorg Chem 2021; 60:11129-11139. [PMID: 34242013 DOI: 10.1021/acs.inorgchem.1c01070] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
One-pot reactions of an asymmetric carboxy-ether-phenol based Schiff base H2L (2-((2-hydroxy-3-methoxybenzylidene)amino)benzoic acid) with selected Ln(NO3)3·nH2O and [Co2(μ-OH2)(O2CCMe3)4(HO2CCMe3)4] (Co2-Piv) in basic MeOH medium resulted in a family of three octanuclear complexes, [CoII4LnIII4L4(μ1,3-Piv)4(μ1,1,3-Piv)2(η1-Piv)2(μ3-OH)4(MeOH)2]·mMeOH·nH2O (Ln = Dy; m = 3, n = 1 (1), Ho; m = 4, n = 0 (2), Yb; m = 3, n = 1 (3)). The coordination aggregates thus obtained were nicely sustained by four ligand anions and eight externally added carboxylate anions showing three different modes of intermetallic connectivity. The options for incorporating different 4f ions in an investigative synthesis, without altering the resulting intermetallic core structure, were successful for the three representative examples. Single-crystal X-ray diffraction studies revealed that the compounds are isostructural and built from two initially formed partial dicubane-type Co2Ln2L2 units. In each of the tetranuclear parts, the metal ion centers are held together by two L2-, two μ3-HO-, three Piv- bridges, one terminal Piv-, and one terminal MeOH. Four carboxylate ends of four L2- units are responsible for connecting two Co2Ln2 units into octanuclear structures. The unique distortion around the CoII centers is achieved from the facile coordination of bigger 4f ions to the adjacent hard OO sites. The distortion is further maintained by the presence of terminal COO- groups from L2-. The dc magnetic susceptibility data revealed ferromagnetic coupling between the CoII and LnIII centers within the series, whereas the ac magnetic susceptibility measurements identified only 1, having a highly anisotropic DyIII ion, as a single-molecule magnet in the absence of any external magnetic field, with an energy barrier Ueff of 12.5 K.
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Affiliation(s)
- Mousumi Biswas
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India
| | - E Carolina Sañudo
- Departament de Química Inorgànica i Orgànica, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain.,Institut de Nanociència i Nanotecnologia, Universitat de Barcelona, (IN2UB) 08028 Barcelona, Spain
| | - Debashis Ray
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India
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16
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Wang HS, Zhang K, Song Y, Pan ZQ. Recent advances in 3d-4f magnetic complexes with several types of non-carboxylate organic ligands. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120318] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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17
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18
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Modak R, Sikdar Y, Gómez-García CJ, Benmansour S, Chatterjee S, Goswami S. Slow Magnetic Relaxation in a Co 2 Dy Trimer and a Co 2 Dy 2 Tetramer. Chem Asian J 2021; 16:666-677. [PMID: 33452757 DOI: 10.1002/asia.202001468] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 01/13/2021] [Indexed: 11/09/2022]
Abstract
The combination of Co(III) and Dy(III) with a compartmental Schiff base ligand (H3 L=3-[(2-Hydroxy-3-methoxy-benzylidene)-amino]-propane-1,2-diol), presenting three different coordinating pockets, has allowed the synthesis of two novel Co(III)-Dy(III) complexes: [Co2 Dy(HL)4 ]NO3 ⋅ 2CH3 CN (1), a rare example of trinuclear linear CoIII 2 DyIII complex (and the first with slow relaxation of magnetization in absence of a DC field) and [Co2 Dy2 (μ3 -OH)2 (HL)2 (OAc)6 ] ⋅ 4.6H2 O (2), the first tetranuclear CoIII 2 DyIII 2 cluster with a rhomb-like structure where the Co(III) ions are connected along the short diagonal of the rhomb. 1 presents two different relaxation processes: a fast relaxation dominated by Quantum tunnelling (QT) and a slow relaxation with an energy barrier of 40 K. 2 shows two close relaxation processes without applied DC fields that follow QT and Orbach mechanisms whereas for HDC =500 Oe, the QT is cancelled and a direct term appears. Here we present the synthesis, X-ray structure and magnetic characterization of these two Co(III)-Dy(III) single-ion/molecule magnets.
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Affiliation(s)
- Ritwik Modak
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata, 700009, India
| | - Yeasin Sikdar
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata, 700009, India
| | - Carlos J Gómez-García
- Instituto de Ciencia Molecular (ICMol), Dpt. Química Inorgánica, Universidad de Valencia, C/Catedrático José Beltrán 2, 46980, Paterna, Spain
| | - Samia Benmansour
- Instituto de Ciencia Molecular (ICMol), Dpt. Química Inorgánica, Universidad de Valencia, C/Catedrático José Beltrán 2, 46980, Paterna, Spain
| | - Sudipta Chatterjee
- Department of Chemistry, Serampore College, Hoogly, Serampore, Pin 712 201, India
| | - Sanchita Goswami
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata, 700009, India
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19
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Kong M, Feng X, Wang J, Zhang YQ, Song Y. Tuning magnetic anisotropy via terminal ligands along the Dy⋯Dy orientation in novel centrosymmetric [Dy2] single molecule magnets. Dalton Trans 2021; 50:568-577. [DOI: 10.1039/d0dt03854g] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The SMM properties of four dinuclear DyIII complexes can be effectively tuned by the appropriate alteration of terminal ligands and lattice guests.
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Affiliation(s)
- Ming Kong
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
- People's Republic of China
| | - Xin Feng
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
- People's Republic of China
| | - Jia Wang
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
- People's Republic of China
| | - Yi-Quan Zhang
- Jiangsu Key Lab For NSLSCS
- School of Physical Science and Technology
- Nanjing Normal University
- Nanjing 210023
- People's Republic of China
| | - You Song
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
- People's Republic of China
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20
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Zhang C, Ma X, Cen P, Jin X, Yang J, Zhang YQ, Ferrando-Soria J, Pardo E, Liu X. A series of lanthanide(III) metal-organic frameworks derived from a pyridyl-dicarboxylate ligand: single-molecule magnet behaviour and luminescence properties. Dalton Trans 2020; 49:14123-14132. [PMID: 33020782 DOI: 10.1039/d0dt02736g] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The reactions of LnIII ions with a versatile pyridyl-decorated dicarboxylic acid ligand lead to the formation of a series of novel three-dimensional (3D) Ln-MOFs, [Ln3(pta)4(Hpta)(H2O)]·xH2O (Ln = Dy (1), Eu (2), Gd (3), Tb (4), H2pta = 2-(4-pyridyl)-terephthalic acid, x = 6 for 1, 2.5 for 2, 1.5 for 3 and 2 for 4). The Ln3+ ions act as nine-coordinated muffin spheres, linking to each other to generate trinuclear {Ln3(OOC)6N2} SBUs, which are further extended to be interesting 3D topological architectures. To the best of our knowledge, the Dy-MOF exhibits zero-field single-molecule magnet (SMM) behaviour with the largest effective energy barrier among the previously reported 3D MOF-based Dy-SMMs. The combined analyses of a diluted sample (1@Y) and ab initio calculations demonstrate that the thermally assisted slow relaxation is mainly attributed to the single-ion magnetism. Furthermore, fluorescence measurements reveal that H2pta can sensitize EuIII and TbIII characteristic luminescence.
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Affiliation(s)
- Chengcheng Zhang
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, National Demonstration Centre for Experimental Chemistry Education, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China.
| | - Xiufang Ma
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, National Demonstration Centre for Experimental Chemistry Education, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China.
| | - Peipei Cen
- College of Public Health and Management, Ningxia Medical University, Yinchuan 750021, China
| | - Xiaoyong Jin
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, National Demonstration Centre for Experimental Chemistry Education, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China.
| | - Jinhui Yang
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, National Demonstration Centre for Experimental Chemistry Education, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China.
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, China.
| | - Jesús Ferrando-Soria
- Departamento de Química Inorgánica, Instituto de Ciencia Molecular (ICMOL), Universidad de Valencia, Paterna 46980, Valencia, Spain
| | - Emilio Pardo
- Departamento de Química Inorgánica, Instituto de Ciencia Molecular (ICMOL), Universidad de Valencia, Paterna 46980, Valencia, Spain
| | - Xiangyu Liu
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, National Demonstration Centre for Experimental Chemistry Education, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China. and State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210023, China
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21
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Biswas M, Sañudo EC, Ray D. Octanuclear Ni
4
Ln
4
Coordination Aggregates from Schiff Base Anion Supports and Connecting of Two Ni
2
Ln
2
Cubes: Syntheses, Structures, and Magnetic Properties. Chem Asian J 2020; 15:2731-2741. [DOI: 10.1002/asia.202000679] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/08/2020] [Indexed: 11/06/2022]
Affiliation(s)
- Mousumi Biswas
- Department of Chemistry Indian Institute of Technology Kharagpur 721 302 India
| | - E. Carolina Sañudo
- Departament de Química Inorgànica i Orgànica Universitat de Barcelona Diagonal 645 08028 Barcelona Spain
- Institut de Nanociència i Nanotecnologia Universitat de Barcelona (IN2UB) 08028 Barcelona Spain
| | - Debashis Ray
- Department of Chemistry Indian Institute of Technology Kharagpur 721 302 India
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22
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Affiliation(s)
- Dong Shao
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing Jiangsu 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 Jiangsu 210023 China
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23
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24
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Lun HJ, Kong XJ, Long LS, Zheng LS. Trigonal bipyramidal CoDy 3 cluster exhibiting single-molecule magnet behavior. Dalton Trans 2020; 49:2421-2425. [PMID: 32040097 DOI: 10.1039/c9dt04600c] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A heterometallic 3d-4f compound formulated as {[CoIII2Dy3Na(CH3CH2COO)6(OH)6(NO3)4(H2O)2]·H2O}n (1) has been synthesized and structurally characterized. The Co2Dy3 metal core adopts trigonal bipyramidal (TBP) geometry. Compound 1 displays single-molecule magnet behavior with an energy barrier of 60.3 K under a zero dc field.
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Affiliation(s)
- Hui-Jie Lun
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
| | - Xiang-Jian Kong
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
| | - La-Sheng Long
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
| | - Lan-Sun Zheng
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
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25
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Basak D, Leusen JV, Gupta T, Kögerler P, Bertolasi V, Ray D. Unusually Distorted Pseudo-Octahedral Coordination Environment Around CoII from Thioether Schiff Base Ligands in Dinuclear [CoLn] (Ln = La, Gd, Tb, Dy, Ho) Complexes: Synthesis, Structure, and Understanding of Magnetic Behavior. Inorg Chem 2020; 59:2387-2405. [DOI: 10.1021/acs.inorgchem.9b03259] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dipmalya Basak
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721 302, India
| | - Jan van Leusen
- Institute of Inorganic Chemistry, RWTH Aachen University, D-52074 Aachen, Germany
| | - Tulika Gupta
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Paul Kögerler
- Institute of Inorganic Chemistry, RWTH Aachen University, D-52074 Aachen, Germany
| | - Valerio Bertolasi
- Dipartimento di ScienzeChimiche e Farmaceutiche, University of Ferrara, 44121 Ferrara, Italy
| | - Debashis Ray
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721 302, India
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26
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Wang HS, Chen Y, Hu ZB, Zhang K, Zhang Z, Song Y, Pan ZQ. Modulating the structural topologies and magnetic relaxation behaviour of the Mn–Dy compounds by using different auxiliary organic ligands. NEW J CHEM 2020. [DOI: 10.1039/d0nj03838e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A MnIII4DyIII complex and a one-dimensional chain containing MnIII2DyIII units have been obtained by using different combinations of organic ligands, and a slow magnetic relaxation behavior was observed for both complexes.
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Affiliation(s)
- Hui-Sheng Wang
- School of Chemistry and Environmental Engineering
- Key Laboratory of Green Chemical Process of Ministry of Education
- Key Laboratory of Novel Reactor and Green Chemical Technology of Hubei Province
- Wuhan Institute of Technology
- Wuhan 430074
| | - Yong Chen
- School of Chemistry and Environmental Engineering
- Key Laboratory of Green Chemical Process of Ministry of Education
- Key Laboratory of Novel Reactor and Green Chemical Technology of Hubei Province
- Wuhan Institute of Technology
- Wuhan 430074
| | - Zhao-Bo Hu
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Advanced Microstructures
- Nanjing University
- Nanjing 210046
| | - Ke Zhang
- School of Chemistry and Environmental Engineering
- Key Laboratory of Green Chemical Process of Ministry of Education
- Key Laboratory of Novel Reactor and Green Chemical Technology of Hubei Province
- Wuhan Institute of Technology
- Wuhan 430074
| | - Zaichao Zhang
- Jiangsu Key Laboratory for the Chemistry of Low-dimensional Materials
- College of Chemistry and Chemical Engineering
- Huaiyin Normal University
- Huai’an 223300
- P. R. China
| | - You Song
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Advanced Microstructures
- Nanjing University
- Nanjing 210046
| | - Zhi-Quan Pan
- School of Chemistry and Environmental Engineering
- Key Laboratory of Green Chemical Process of Ministry of Education
- Key Laboratory of Novel Reactor and Green Chemical Technology of Hubei Province
- Wuhan Institute of Technology
- Wuhan 430074
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27
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Basak D, van Leusen J, Gupta T, Kögerler P, Ray D. Synthetic diversity and change in nuclearity in [Co-Dy] coordination aggregates: bridge removal, solvent induced structural reorganization and AC susceptibility measurements. Dalton Trans 2020; 49:7576-7591. [PMID: 32458935 DOI: 10.1039/d0dt01728k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three new cobalt(ii/iii)-dysprosium(iii) complexes, [DyIII3CoII2CoIII2(L1)2(O2CCMe3)8(OH)4(OMe)2(H2O)4]·Dy(η1-O2CCMe3)2(η2-O2CCMe3)2(MeOH)2·4H2O (1), [DyIII3CoII2CoIII2(L2)2(O2CCMe3)8(OH)4(OMe)2(MeOH)2(H2O)2]·Dy(η1-O2CCMe3)2(η2-O2CCMe3)2(MeOH)2·4MeOH (2) and DyIII2CoII2CoIII2(L2)2(O2CCMe3)10(OH)2 (3) have been reported. In the heptanuclear 3d-4f monocationic aggregates in 1 and 2 the three dysprosium and four cobalt sites are arranged into a vertex shared dicubane structure, induced by two structure-directing ligands. Interestingly, a unique and previously unknown dysprosium(iii)-pivalate based counter anion, Dy(η1-O2CCMe3)2(η2-O2CCMe3)2(MeOH)2-, was trapped by the monocationic cores during crystallization. MeCN induced structural rearrangement of 2 through loss of OMe- bridges and dysprosium(iii) ions at the shared vertex resulted in the hexanuclear 3d-4f neutral aggregate 3, in which two dysprosium and four cobalt sites exhibit a near planar disposition. HRMS(+ve) of solutions of 1 and 2 revealed the pathway for aggregation processes and solvent induced structural transformation along with the importance of bridging OMe- in directing the formation of these compounds. Magnetic studies show a non-zero out-of-phase component in the AC susceptibility measurements of 1 but not in 2 and 3, although 1 and 2 have a very similar {CoIII2CoII2DyIII3} core and another DyIII center. Ab initio single-ion calculations point to the different single-ion anisotropic behavior for DyIII centers (energy in cm-1 and g-tensors) as well as negative and positive D values for CoII sites in 1 and 2 respectively reaffirming the experimental result. However, calculations envision that, zero-field out-of-phase signal and no out-of-phase signal in 1 and 2 respectively do not solely generate from the single-ion Dy/Co anisotropies and the overall relaxation mechanism can be understood by considering the exchange interactions between DyIII-DyIII and DyIII-CoII centres.
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Affiliation(s)
- Dipmalya Basak
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721 302, India.
| | - Jan van Leusen
- Institute of Inorganic Chemistry, RWTH Aachen University, D-52074 Aachen, Germany
| | - Tulika Gupta
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Paul Kögerler
- Institute of Inorganic Chemistry, RWTH Aachen University, D-52074 Aachen, Germany
| | - Debashis Ray
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721 302, India.
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28
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Xue AQ, Liu YY, Li JX, Zhang Y, Meng YS, Zhu WH, Zhang YQ, Sun HL, Wang F, Qiu GX, Liang LY, Wang X, Gao S. The differential magnetic relaxation behaviours of slightly distorted triangular dodecahedral dysprosium analogues in a type of cyano-bridged 3d–4f zig-zag chain compounds. Dalton Trans 2020; 49:6867-6875. [DOI: 10.1039/d0dt00990c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Differential magnetic properties were observed for triangular dodecahedral dysprosium analogues in a type of cyano-bridged 3d–4f zig-zag chain compound.
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29
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Vaz RCA, Esteves IO, Oliveira WXC, Honorato J, Martins FT, Marques LF, dos Santos GL, Freire RO, Jesus LT, Pedroso EF, Nunes WC, Julve M, Pereira CLM. Mononuclear lanthanide(iii)-oxamate complexes as new photoluminescent field-induced single-molecule magnets: solid-state photophysical and magnetic properties. Dalton Trans 2020; 49:16106-16124. [DOI: 10.1039/d0dt02497j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Lanthanide(iii)-oxamate complexes can switch into Light Conversion Molecular Devices (LCMDs) or field-induced Single-Molecule Magnets (SMMs) depending on the external stimulus.
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30
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Anastasiadis NC, Lada ZG, Polyzou CD, Raptopoulou CP, Psycharis V, Konidaris KF, Perlepes SP. Synthetic strategies to {CoIII2LnIII} complexes based on 2-pyridyl oximes (Ln = lanthanide). INORG CHEM COMMUN 2019. [DOI: 10.1016/j.inoche.2019.107478] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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31
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Wang HS, Long QQ, Hu ZB, Yue L, Yang FJ, Yin CL, Pan ZQ, Zhang YQ, Song Y. Synthesis, crystal structures and magnetic properties of a series of chair-like heterometallic [Fe 4Ln 2] (Ln = Gd III, Dy III, Ho III, and Er III) complexes with mixed organic ligands. Dalton Trans 2019; 48:13472-13482. [PMID: 31454007 DOI: 10.1039/c9dt02638j] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Four chair-like hexanuclear Fe-Ln complexes containing mixed organic ligands, namely, [Fe4Ln2{(py)2CO2}4(pdm)2(NO3)2(H2O)2Cl4]·xCH3CN·yH2O (Ln = GdIII (1, x = 1, y = 0), DyIII (2, x = 1, y = 1), HoIII (3, x = 0, y = 2), and ErIII (4, x = 1, y = 3); (py)2CO2H2 = the gem-diol form of di-2-pyridyl ketone and pdmH2 = 2,6-pyridinedimethanol) have been obtained by employing di-2-pyridyl ketone and 2,6-pyridinedimethanol reacting with FeCl3 and Ln(NO3)3 in MeCN. The structures of 1-4 are similar to each other except for the number of lattice solvent molecules. Four FeIII and two LnIII in these complexes comprise a chair-like core with the "body" constructed by four FeIII ions and the "end" constructed by two LnIII ions. Among the four compounds, 2 shows field-induced single molecule magnet behavior as revealed by ac magnetic susceptibility studies, with the effective energy barrier and the pre-exponential factor of 22.07 K and 8.44 × 10-7 s, respectively. Ab initio calculations indicated that, among 2_Dy, 3_Ho and 4_Er fragments, the energy gap between the lowest two spin-orbit states for 2_Dy is the largest, while the tunneling gap for 2 is the smallest. These might be the reasons for complex 2 exhibiting SMM behavior. Additionally, the orientations of the magnetic anisotropy of DyIII in 2 were obtained by electrostatic calculations and ab initio calculations, both indicating that the directions of the main magnetic axis of Dy1 ions are almost aligned along Dy1-O5 (O5 from the pdm2- ligand).
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Affiliation(s)
- Hui-Sheng Wang
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan 430074, P. R. China.
| | - Qiao-Qiao Long
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan 430074, P. R. China.
| | - Zhao-Bo Hu
- State Key Laboratory of Coordinate Chemistry, Nanjing National Laboratory of Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China.
| | - Lin Yue
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan 430074, P. R. China.
| | - Feng-Jun Yang
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan 430074, P. R. China.
| | - Cheng-Ling Yin
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan 430074, P. R. China.
| | - Zhi-Quan Pan
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan 430074, P. R. China.
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, China.
| | - You Song
- State Key Laboratory of Coordinate Chemistry, Nanjing National Laboratory of Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China.
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32
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Li Q, Peng Y, Qian J, Yan T, Du L, Zhao Q. A family of planar hexanuclear CoLn clusters with lucanidae-like arrangement and single-molecule magnet behavior. Dalton Trans 2019; 48:12880-12887. [PMID: 31389453 DOI: 10.1039/c9dt02103e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A family of planar hexanuclear CoLn clusters with the hydroxyl and nitrogen rich ligand 2-[bis(pyridin-2-ylmethyl) amino]-2-(hydroxymethyl)propane-1,3-diol (H3L), formulated as [Co4Ln2(μ3-O)2(μ-N3)2(OH)2(H2O)2(HL)4]·(CH3CO2)2·20H2O [Ln = Dy (1), Gd (2), Tb (3), Eu (4) and Ho (5)], have been synthesized and structurally characterized. They are isomorphous and feature a lucanidae-like arrangement. They are the first examples of 3d-4f clusters with the H3L ligand. In addition, the magnetic properties of 1-5 have been investigated and the single-molecule magnet (SMM) behaviour is observed for 1.
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Affiliation(s)
- Qipeng Li
- Key Laboratory of Medicinal Chemistry for Natural Resource Education Ministry, School of Chemical Science and Technology, Pharmacy, Yunnan University, Kunming, 650091, P.R. China. and Science and Technology Department, College of Chemistry and Chemical Engineering, Zhaotong University, Zhaotong, 657000, P. R. China
| | - Yan Peng
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesser strasse 15, 76131, Karlsruhe, Germany and Institute of Nanotechnology, Karlsruhe Institute of Technology, Postfach 3640, 76021, Karlsruhe, Germany.
| | - Jinjie Qian
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, P. R. China
| | - Tong Yan
- Key Laboratory of Medicinal Chemistry for Natural Resource Education Ministry, School of Chemical Science and Technology, Pharmacy, Yunnan University, Kunming, 650091, P.R. China.
| | - Lin Du
- Key Laboratory of Medicinal Chemistry for Natural Resource Education Ministry, School of Chemical Science and Technology, Pharmacy, Yunnan University, Kunming, 650091, P.R. China.
| | - Qihua Zhao
- Key Laboratory of Medicinal Chemistry for Natural Resource Education Ministry, School of Chemical Science and Technology, Pharmacy, Yunnan University, Kunming, 650091, P.R. China.
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33
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Langley SK, Vignesh KR, Gupta T, Gartshore CJ, Rajaraman G, Forsyth CM, Murray KS. New examples of triangular terbium(iii) and holmium(iii) and hexagonal dysprosium(iii) single molecule toroics. Dalton Trans 2019; 48:15657-15667. [PMID: 31482898 DOI: 10.1039/c9dt02419k] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The structural, magnetic and theoretical aspects are described for three triangular lanthanide complexes, [Tb(OH)(teaH2)3(paa)3]Cl2 (1), [Dy(OH)(teaH2)3(paa)3]Cl2 (2) and [Ho(OH)(teaH2)3(paa)3]Cl2 (3), and a hexanuclear wheel of formula [Dy(pdeaH)6(NO3)6] (4) [teaH3 = triethanolamine, paaH = N-(2-pyridyl)-acetoacetamide and pdeaH3 = 3-[bis(2-hydroxyethyl)amino]propan-1-ol]. Each complex displays single molecule toroidal behaviour as rationalised using high-level ab initio calculations. Complexes 2 and 3 are the first examples of mixed moment single molecule toroidal complexes featuring non-Kramers ions.
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Affiliation(s)
- Stuart K Langley
- School of science and the environment, Division of Chemistry, Manchester Metropolitan University, Manchester, M15 6BH, UK.
| | - Kuduva R Vignesh
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai-400076, India.
| | - Tulika Gupta
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai-400076, India.
| | | | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai-400076, India.
| | - Craig M Forsyth
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia.
| | - Keith S Murray
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia.
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34
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da Cunha TT, Barbosa VM, Oliveira WX, Pinheiro CB, Pedroso EF, Nunes WC, Pereira CL. Slow magnetic relaxation in mononuclear gadolinium(III) and dysprosium(III) oxamato complexes. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.04.056] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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35
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Dey A, Acharya J, Chandrasekhar V. Heterometallic 3d–4f Complexes as Single‐Molecule Magnets. Chem Asian J 2019; 14:4433-4453. [DOI: 10.1002/asia.201900897] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Indexed: 11/10/2022]
Affiliation(s)
- Atanu Dey
- Tata Institute of Fundamental Research Hyderabad Gopanpally Hyderabad- 500107 India
| | - Joydev Acharya
- Department of ChemistryIndian Institute of Technology Kanpur Kanpur- 208016 India
| | - Vadapalli Chandrasekhar
- Tata Institute of Fundamental Research Hyderabad Gopanpally Hyderabad- 500107 India
- Department of ChemistryIndian Institute of Technology Kanpur Kanpur- 208016 India
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36
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Botezat O, van Leusen J, Kögerler P, Baca SG. Ultrasound‐Assisted Formation of {Fe
6
Ln/Y
4
} Wheel‐Shaped Clusters and Condensed {Fe
4
Ln/Y
2
} Aggregates. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900175] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Olga Botezat
- Institute of Applied Physics Academiei 5, MD 2028 Chisinau R. Moldova
- RWTH Aachen University Landoltweg 1 52074 Aachen Germany
| | - Jan van Leusen
- RWTH Aachen University Landoltweg 1 52074 Aachen Germany
| | - Paul Kögerler
- RWTH Aachen University Landoltweg 1 52074 Aachen Germany
| | - Svetlana G. Baca
- Institute of Applied Physics Academiei 5, MD 2028 Chisinau R. Moldova
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37
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Griffiths K, Kühne IA, Tizzard GJ, Coles SJ, Kostakis GE, Powell AK. Twists to the Spin Structure of the Ln 9-diabolo Motif Exemplified in Two {Zn 2Ln 2}[Ln 9]{Zn 2} Coordination Clusters. Inorg Chem 2019; 58:2483-2490. [PMID: 30702868 DOI: 10.1021/acs.inorgchem.8b03048] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Two pentadecanuclear Zn4Ln11 [with Ln = Gd(1) or Dy(2)] coordination clusters, best formulated as {Zn2Ln2}[Ln9]{Zn2}, are presented. The central {Ln9} diabolo core has a {Zn2Ln2} handle motif pulling at two outer Ln ions of the central core via two {ZnLn} units, which also invest the system with C2 point symmetry. The resulting cluster motif is supported on two Zn "feet", corresponding to the {Zn2} unit in the formula. A thorough investigation of the magnetic properties in the light of the properties of previously reported {Ln9} diabolo compounds was undertaken. Up to now, the spin structure of such diabolo motifs usually proves ambiguous. Our magnetic studies show that the orientation of the central spin in the {Gd9} diabolo plays a decisive role. In stabilizing the core by attachment of the {Zn}2+ "feet" and using the C2 symmetry related {ZnGd}5+ handles to influence the spin direction of the central Gd of the {Gd9} diabolo, we can understand why the "naked" {Gd9} diabolo shows ambiguous spin structure. This then allowed us to elucidate the single-molecule magnetic (SMM) properties of the Dy-based compound 2 through disentangling the magnetic properties of the isostructural Gd-based compound 1.
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Affiliation(s)
- Kieran Griffiths
- Department of Chemistry, School of Life Sciences , University of Sussex , Brighton BN1 9QJ , United Kingdom
| | - Irina A Kühne
- Institut für Anorganische Chemie , Karlsruher Institut für Technologie (KIT) , Engesserstr. 15 , 76131 Karlsruhe , Germany
| | - Graham J Tizzard
- UK National Crystallographic Service, Chemistry , University of Southampton , Southampton , SO1 71BJ , United Kingdom
| | - Simon J Coles
- UK National Crystallographic Service, Chemistry , University of Southampton , Southampton , SO1 71BJ , United Kingdom
| | - George E Kostakis
- Department of Chemistry, School of Life Sciences , University of Sussex , Brighton BN1 9QJ , United Kingdom
| | - Annie K Powell
- Institut für Anorganische Chemie , Karlsruher Institut für Technologie (KIT) , Engesserstr. 15 , 76131 Karlsruhe , Germany.,Institut für Nanotechnologie , Karlsruher Institut für Technologie (KIT) , Hermann-von-Helmholtz-Platz 1 , 76344 Eggenstein-Leopoldshafen , Germany
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38
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Stavgianoudaki N, Siczek M, Lis T, Lorusso G, Evangelisti M, Milios CJ. A decanuclear [DyIII6ZnII4] cluster: a {ZnII4} rectangle surrounding an octahedral {DyIII6} single molecule magnet. Dalton Trans 2019; 48:3566-3570. [DOI: 10.1039/c9dt00440h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The synthesis, structure and magnetic relaxation properties of a decanuclear [DyIII6ZnII4] complex are reported.
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Affiliation(s)
| | - Milosz Siczek
- Faculty of Chemistry
- University of Wroclaw
- Wroclaw 50-383
- Poland
| | - Tadeusz Lis
- Faculty of Chemistry
- University of Wroclaw
- Wroclaw 50-383
- Poland
| | - Giulia Lorusso
- Instituto de Ciencia de Materiales de Aragón (ICMA)
- CSIC – Universidad de Zaragoza
- 50009 Zaragoza
- Spain
| | - Marco Evangelisti
- Instituto de Ciencia de Materiales de Aragón (ICMA)
- CSIC – Universidad de Zaragoza
- 50009 Zaragoza
- Spain
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39
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Synthesis of five isostructural tetranuclear Fe2Ln2 (Ln = Gd, Tb, Dy, Ho, Er) complexes with an “inverse butterfly” core. Polyhedron 2019. [DOI: 10.1016/j.poly.2018.06.051] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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40
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Wang HS, Chen Y, Hu ZB, Yin CL, Zhang Z, Pan ZQ. Modulation of the directions of the anisotropic axes of DyIII ions through utilizing two kinds of organic ligands or replacing DyIII ions by FeIII ions. CrystEngComm 2019. [DOI: 10.1039/c9ce00894b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two complexes based on Dy4 or Fe2Dy2 tetrahedral unit have been obtained by employing mixed organic ligands. The directions of the easy magnetization for the DyIII in both complexes were successfully modulated.
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Affiliation(s)
- Hui-Sheng Wang
- School of Chemistry and Environmental Engineering
- Key Laboratory of Green Chemical Process of Ministry of Education
- Wuhan Institute of Technology
- Wuhan 430074
- P. R. China
| | - Yong Chen
- School of Chemistry and Environmental Engineering
- Key Laboratory of Green Chemical Process of Ministry of Education
- Wuhan Institute of Technology
- Wuhan 430074
- P. R. China
| | - Zhao-Bo Hu
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Advanced Microstructures
- Nanjing University
- Nanjing 210046
| | - Cheng-Ling Yin
- School of Chemistry and Environmental Engineering
- Key Laboratory of Green Chemical Process of Ministry of Education
- Wuhan Institute of Technology
- Wuhan 430074
- P. R. China
| | - Zaichao Zhang
- Jiangsu Key Laboratory for the Chemistry of Low-dimensional Materials
- School of Chemistry and Chemical Engineering
- Huaiyin Normal University
- Huaiyin 223300
- P. R. China
| | - Zhi-Quan Pan
- School of Chemistry and Environmental Engineering
- Key Laboratory of Green Chemical Process of Ministry of Education
- Wuhan Institute of Technology
- Wuhan 430074
- P. R. China
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41
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Wang HS, Yin CL, Hu ZB, Chen Y, Pan ZQ, Song Y, Zhang YQ, Zhang ZC. Regulation of magnetic relaxation behavior by replacing 3d transition metal ions in [M2Dy2] complexes containing two different organic chelating ligands. Dalton Trans 2019; 48:10011-10022. [DOI: 10.1039/c9dt00774a] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Two [MIII2DyIII2] complexes (M = Fe for 1 and Co for 2) with mixed organic ligands were obtained. Complex 2 exhibits single molecule magnet behavior with Ueff = 64.0(9) K.
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Affiliation(s)
- Hui-Sheng Wang
- School of Chemistry and Environmental Engineering
- Key Laboratory of Green Chemical Process of Ministry of Education
- Wuhan Institute of Technology
- Wuhan 430074
- P. R. China
| | - Cheng-Ling Yin
- School of Chemistry and Environmental Engineering
- Key Laboratory of Green Chemical Process of Ministry of Education
- Wuhan Institute of Technology
- Wuhan 430074
- P. R. China
| | - Zhao-Bo Hu
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Advanced Microstructures
- Nanjing University
- Nanjing 210046
| | - Yong Chen
- School of Chemistry and Environmental Engineering
- Key Laboratory of Green Chemical Process of Ministry of Education
- Wuhan Institute of Technology
- Wuhan 430074
- P. R. China
| | - Zhi-Quan Pan
- School of Chemistry and Environmental Engineering
- Key Laboratory of Green Chemical Process of Ministry of Education
- Wuhan Institute of Technology
- Wuhan 430074
- P. R. China
| | - You Song
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Advanced Microstructures
- Nanjing University
- Nanjing 210046
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS
- School of Physical Science and Technology
- Nanjing Normal University
- Nanjing 210023
- China
| | - Zai-Chao Zhang
- Jiangsu Key Laboratory for the Chemistry of Low-dimensional Materials
- School of Chemistry and Chemical Engineering
- Huaiyin Normal University
- P. R. China
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42
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Vráblová A, Tomás M, Falvello LR, Dlháň Ľ, Titiš J, Černák J, Boča R. Slow magnetic relaxation in Ni–Ln (Ln = Ce, Gd, Dy) dinuclear complexes. Dalton Trans 2019; 48:13943-13952. [DOI: 10.1039/c9dt02122a] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Unusual magnetic behaviour is observed in compounds with three Cl ligands in fac-mode coordination to dysprosium, cerium and even gadolinium.
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Affiliation(s)
- Anna Vráblová
- Department of Inorganic Chemistry
- Institute of Chemistry
- P. J. Šafárik University in Košice
- Košice
- Slovakia
| | - Milagros Tomás
- Centro de Quimica y Materiales de Aragón (CEQMA-ISQCH)
- Departamento de Química Inorgánica
- Pedro Cerbuna 12
- University of Zaragoza–CSIC
- E-50009 Zaragoza
| | - Larry R. Falvello
- Instituto de Ciencia de Materiales de Aragón (ICMA)
- Departamento de Química Inorgánica
- University of Zaragoza–CSIC
- E-50009 Zaragoza
- Spain
| | - Ľubor Dlháň
- Institute of Inorganic Chemistry
- Slovak University of Technology
- 812 37 Bratislava
- Slovakia
| | - Ján Titiš
- Department of Chemistry
- FPV
- University of SS Cyril and Methodius
- 917 01 Trnava
- Slovakia
| | - Juraj Černák
- Department of Inorganic Chemistry
- Institute of Chemistry
- P. J. Šafárik University in Košice
- Košice
- Slovakia
| | - Roman Boča
- Department of Chemistry
- FPV
- University of SS Cyril and Methodius
- 917 01 Trnava
- Slovakia
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43
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Dey A, Kalita P, Chandrasekhar V. Lanthanide(III)-Based Single-Ion Magnets. ACS OMEGA 2018; 3:9462-9475. [PMID: 31459081 PMCID: PMC6644820 DOI: 10.1021/acsomega.8b01204] [Citation(s) in RCA: 84] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 08/03/2018] [Indexed: 05/27/2023]
Abstract
Mononuclear lanthanide-based single-ion magnets (SIMs) are known since 2003 with the discovery of SIM properties in a bis-(phthalocyaninato)lanthanide complex. A recent report on [Dy(Cpttt)2][BC6F5] indicating that it exhibits the highest known blocking temperature (60 K) has spurred fresh interest in this area. In this article, we discuss about the various requirements of lanthanide-based SIMs along with representative examples. Specifically, we describe the complexes whose coordination numbers vary from 2 to 8. We also discuss the representative examples of organometallic lanthanide complexes that can function as molecular magnets.
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Affiliation(s)
- Atanu Dey
- Tata
Institute of Fundamental Research Hyderabad, Hyderabad 500107, India
| | - Pankaj Kalita
- School
of Chemical Sciences, National Institute of Science Education and
Research, HBNI, Bhubaneswar 752050, India
| | - Vadapalli Chandrasekhar
- Tata
Institute of Fundamental Research Hyderabad, Hyderabad 500107, India
- Department
of Chemistry, Indian Institute of Technology
Kanpur, Kanpur 208016, India
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44
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Hu P, Wang XN, Jiang CG, Yu F, Li B, Zhuang GL, Zhang T. Nanosized Chiral [Mn6Ln2] Clusters Modeled by Enantiomeric Schiff Base Derivatives: Synthesis, Crystal Structures, and Magnetic Properties. Inorg Chem 2018; 57:8639-8645. [DOI: 10.1021/acs.inorgchem.8b01423] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Peng Hu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, People’s Republic of China
| | - Xiao-ning Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, People’s Republic of China
| | - Cheng-gang Jiang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, People’s Republic of China
| | - Fan Yu
- Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education, School of Chemical and Environmental Engineering, Jianghan University, Wuhan, Hubei 430056, People’s Republic of China
| | - Bao Li
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, People’s Republic of China
| | - Gui-lin Zhuang
- Institute of Industrial Catalysis, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310023, People’s Republic of China
| | - Tianle Zhang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, People’s Republic of China
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45
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Chen S, Mereacre V, Zhao Z, Zhang W, Zhang M, He Z. Targeted replacement: systematic studies of dodecanuclear {MLn} coordination clusters (M = Cr, Co; Ln = Dy, Y). Dalton Trans 2018; 47:7456-7462. [PMID: 29785423 DOI: 10.1039/c8dt01289j] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three dodecanuclear 3d-4f coordination clusters, [CrIII6LnIII6(μ3-OH)8(tbdea)6(C6H5COO)16]·2H2O (Ln = Dy (1), Y (2)) and [CoIII6DyIII6(μ3-OH)8(nbdea)6(m-CH3C6H4COO)16]·2H2O·2CH3CN (3), have been synthesized under solvothermal conditions and characterized. Single-crystal X-ray diffraction analysis revealed that all three compounds possess an analogous {MIII6LnIII6} core (M = Cr, Co; Ln = Dy, Y) and dc magnetic susceptibility studies indicated that the magnetic exchange couplings between DyIII ions are dominant antiferromagnetic, while the CrIII-DyIII interactions are weakly ferromagnetic. Furthermore, the ac magnetic susceptibility measurements showed that both CrIII6DyIII6 compound 1 and CoIIi6DyIII6 compound 3 containing highly anisotropic DyIII ions displayed single-molecule magnetic (SMM) behavior with the energy barrier Ueff increasing from 12.8 K (for 1) to 20.8 K (for 3), indicating that weak 3d-4f exchange couplings enhance the QTM and reduce the energy barrier.
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Affiliation(s)
- Sihuai Chen
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China.
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46
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Kalita P, Goura J, Herrera JM, Colacio E, Chandrasekhar V. Heterometallic Octanuclear Ni II 4Ln III 4 (Ln = Y, Gd, Tb, Dy, Ho, Er) Complexes Containing Ni II 2Ln III 2O 4 Distorted Cubane Motifs: Synthesis, Structure, and Magnetic Properties. ACS OMEGA 2018; 3:5202-5211. [PMID: 31458734 PMCID: PMC6641754 DOI: 10.1021/acsomega.8b00292] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Accepted: 04/30/2018] [Indexed: 06/10/2023]
Abstract
The reaction of 2-methoxy-6-[{2-(2-hydroxyethylamino)ethylimino}methyl] phenol (LH3) with lanthanide metal salts followed by the addition of nickel acetate allowed isolation of a family of octanuclear complexes, [Ni4Ln4(μ2-OH)2(μ3-OH)4(μ-OOCCH3)8(LH2)4]·(OH)2·xH2O. Single crystal X-ray diffraction studies of these complexes reveal that their central metallic core consists of two tetranuclear [Ni2Ln2O4] cubane subunits fused together by acetate and hydroxide bridges. The magnetic study of these complexes reveals a ferromagnetic interaction between the LnIII and the NiII center. The magnitude of exchange coupling between the NiII and LnIII center, parametrized from the magnetic data of the Gd analogue, gives J = +0.86 cm-1. The magneto caloric effect, studied for the NiII 4GdIII 4 complex, shows a maximum of magnetic entropy change, -ΔS m = 22.58 J kg-1 K-1 at 3 K for an applied external field of 5 T.
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Affiliation(s)
- Pankaj Kalita
- School
of Chemical Sciences, National Institute
of Science Education and Research, Homi Bhabha National Institute, Jatni, Khurda, Bhubaneswar 752050, Odisha, India
| | - Joydeb Goura
- School
of Chemical Sciences, National Institute
of Science Education and Research, Homi Bhabha National Institute, Jatni, Khurda, Bhubaneswar 752050, Odisha, India
- Department
of Chemistry, Indian Institute of Technology
Kanpur, Kanpur 208016, India
| | - Juan Manuel Herrera
- Departamento
de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, Avenida de Fuentenueva s/n, 18071 Granada, Spain
| | - Enrique Colacio
- Departamento
de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, Avenida de Fuentenueva s/n, 18071 Granada, Spain
| | - Vadapalli Chandrasekhar
- Department
of Chemistry, Indian Institute of Technology
Kanpur, Kanpur 208016, India
- Centre
for Interdisciplinary Sciences, Tata Institute
of Fundamental Research Hyderabad, Gopanpally, Hyderabad 500107, India
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47
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Affiliation(s)
- Alejandro V. Funes
- Departamento de Química Inorgánica; Analítica y Química Física/ INQUIMAE (CONICET); Facultad de Ciencias Exactas y Naturales; Universidad de Buenos Aires; Pabellón 2, Ciudad Universitaria C1428EHA Buenos Aires Argentina
| | - Pablo Alborés
- Departamento de Química Inorgánica; Analítica y Química Física/ INQUIMAE (CONICET); Facultad de Ciencias Exactas y Naturales; Universidad de Buenos Aires; Pabellón 2, Ciudad Universitaria C1428EHA Buenos Aires Argentina
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48
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Gupta SK, Murugavel R. Enriching lanthanide single-ion magnetism through symmetry and axiality. Chem Commun (Camb) 2018; 54:3685-3696. [PMID: 29564454 DOI: 10.1039/c7cc09956h] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Rapidly growing modern information technology demands energy and cost efficient tools that can efficiently store and process a large amount of data. However, the miniaturization technology that was being used to boost the performance of the electronic devices, keeping up with the pace as estimated by Moore's law, is reaching its limit. To overcome these challenges, several alternative routes that can eventually mimic the modern electronics fabrication using silicon have been proposed. Single molecule magnets (SMMs), being considered as one of the potential alternatives, have gone through significant progress and the focus has shifted from the use of polynuclear clusters to mononuclear complexes in the last few years. The recent frenzy in the field of SMMs is driven by a better understanding of the effects of crystal field (CF) and molecular symmetry on the magnetic properties, especially in the case of mononuclear paramagnetic complexes, apart from other controlling factors. This has led to the advent of highly anisotropic single-ion magnets (SIMs) with magnetic blocking temperatures as high as 60 K and anisotropic energy barriers over 1800 K. This article overviews our recent research in the light of the emergence of the importance of CF and symmetry in 4f ion based single-ion magnets (SIMs), especially in the context of SIMs with D5h symmetry, apart from commenting on the synthetic efforts adopted to place these metal ions in unusual coordination geometries.
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Affiliation(s)
- Sandeep K Gupta
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai-400076, India.
| | - Ramaswamy Murugavel
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai-400076, India.
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49
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Vignesh KR, Langley SK, Moubaraki B, Murray KS, Rajaraman G. Understanding the Mechanism of Magnetic Relaxation in Pentanuclear {Mn IVMn III2Ln III2} Single-Molecule Magnets. Inorg Chem 2018; 57:1158-1170. [PMID: 29308893 DOI: 10.1021/acs.inorgchem.7b02608] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A new family of heterometallic pentanuclear complexes of formulas [MnIVMnIII2LnIII2O2(benz)4(mdea)3(NO3)2(MeOH)] (Ln = Dy (1-Dy), Tb (2-Tb), Gd (3-Gd), Eu (4-Eu), Sm (5-Sm), Nd (6-Nd), Pr (7-Pr); benz(H) = benzoic acid; mdeaH2= N-methyldiethanolamine) and [MnIVMnIII2LnIII2O2(o-tol)4(mdea)3(NO3)2(MeOH)] (Ln = Gd (8-Gd), Eu (9-Eu); o-tol(H) = o-toluic acid) have been isolated and structurally, magnetically, and theoretically characterized. dc magnetic susceptibility measurements reveal dominant antiferromagnetic magnetic interactions for each complex, except for 2-Tb and 3-Gd, which reveal an upturn in the χMT product at low temperatures. The magnetic interactions between the spin centers in the Gd derivatives, 3-Gd and 8-Gd, which display markedly different χMT vs T profiles, were found to be due to the interactions of the GdIII-GdIII ions which change from ferromagnetic (3-Gd) to antiferromagnetic (8-Gd) due to structural differences. ac magnetic susceptibility measurements reveal a nonzero out-of-phase component for 1-Dy and 7-Pr, but no maxima were observed above 2 K (Hdc = 0 Oe), which suggests single-molecule magnet (SMM) behavior. Out-of-phase signals were observed for complexes 2-Tb, 4-Eu, 8-Gd, and 9-Eu, in the presence of a static dc field (Hdc = 2000, 3000 Oe). The anisotropic nature of the lanthanide ions in the benzoate series (1-Dy, 2-Tb, 5-Sm, 6-Nd, and 7-Pr) were thoroughly investigated using ab initio methods. CASSCF calculations predict that the origin of SMM behavior in 1-Dy and 7-Pr and the applied field SMM behavior in 2-Tb does not solely originate from the single-ion anisotropy of the lanthanide ions. To fully understand the relaxation mechanism, we have employed the Lines model to fit the susceptibility data using the POLY_ANISO program, which suggests that the zero-field SMM behavior observed in complexes 1-Dy and 7-Pr is due to weak MnIII/IV-LnIII and LnIII-LnIII couplings and an unfavorable LnIII/MnIII/MnIV anisotropy. In complexes 4-Eu, 8-Gd, and 9-Eu ab initio calculations indicate that the anisotropy of the MnIII ions solely gives rise to the possibility of SMM behavior. Complex 7-Pr is a Pr(III)-containing complex that displays zero-field SMM behavior, which is rare, and our study suggests the possibility of coupling weak SOC lanthanide metal ions to anisotropic transition-metal ions to derive SMM characteristics; however, enhancing the exchange coupling in {3d-4f} complexes is still a stubborn hurdle in harnessing new generation {3d-4f} SMMs.
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Affiliation(s)
| | - Stuart K Langley
- School of Science and the Environment, Division of Chemistry, Manchester Metropolitan University , Manchester, U.K
| | - Boujemaa Moubaraki
- School of Chemistry, 17 Rainforest Walk, Monash University , Clayton, Victoria 3800, Australia
| | - Keith S Murray
- School of Chemistry, 17 Rainforest Walk, Monash University , Clayton, Victoria 3800, Australia
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50
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Chen S, Mereacre V, Zhao Z, Zhang W, He Z. Synthesis, structures and magnetic properties of linear {CoII2LnIII2} coordination clusters. NEW J CHEM 2018. [DOI: 10.1039/c7nj04022a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A series of linear CoII2LnIII2 coordination clusters have been synthesized and their magnetic properties have been systematically studied.
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Affiliation(s)
- Sihuai Chen
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- P. R. China
| | - Valeriu Mereacre
- KIT Steel and Lightweight Structures
- Research Center for Steel
- Timber and Masonry
- Karlsruhe Institute of Technology
- 76131 Karlsruhe
| | - Zhiying Zhao
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- P. R. China
| | - Wanwan Zhang
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- P. R. China
| | - Zhangzhen He
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- P. R. China
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