1
|
Raza A, Chelazzi L, Ciattini S, Sorace L, Perfetti M. Osmium(III) Acetylacetonate and Its Missing Polymorph: A Magnetic and Structural Investigation. Inorg Chem 2024. [PMID: 39092922 DOI: 10.1021/acs.inorgchem.4c01672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2024]
Abstract
Despite the potential for their application, the magnetic behavior of complexes containing 4d and 5d metal ions is underexplored, evidencing the need for benchmark multi-technique studies on simple molecules. We report here a structural and magnetic study on osmium(III) acetylacetonate [Os(acac)3]. X-ray single crystal diffraction did not allow us to determine the structure of the β-polymorph of [Os(acac)3]. The combined magnetic (dc magnetic measurements on powder and cantilever torque magnetometry on single crystal) and spectroscopic (electron paramagnetic resonance, EPR) characterization is here used to provide further evidence that its structure is indeed the one of the orthorhombic "missing polymorph", analogous to the ruthenium(III) derivative. Our study shows that all acetylacetonate complexes of the eighth group of the periodic table show dimorphism and are isomorphic. The EPR characterization allowed the experimental assessment of the easy axis nature of the ground doublet and the determination of the first hyperfine coupling in an osmium complex. Torque magnetometry, applied here for the first time on an osmium-based molecule, determined the orientation of the easy axis along the pseudo C3 axis of the complex. Ac magnetometric measurements revealed in-field slow relaxation of the magnetization further slowed by the suppression of dipolar fields via magnetic dilution in the isostructural gallium(III) analogue.
Collapse
Affiliation(s)
- Arsen Raza
- Department of Chemistry "Ugo Schiff", DICUS and INSTM Research Unit, University of Florence, Via della Lastruccia 3-13, 50019 Sesto Fiorentino, Florence, Italy
- Department of Industrial Engineering, DIEF and INSTM Research Unit, University of Florence, Via Santa Marta 3, 50139 Florence, Italy
| | - Laura Chelazzi
- Centro di Servizi di Cristallografia Strutturale, CRIST, Via della Lastruccia, 13, 50019 Sesto Fiorentino, Florence, Italy
| | - Samuele Ciattini
- Centro di Servizi di Cristallografia Strutturale, CRIST, Via della Lastruccia, 13, 50019 Sesto Fiorentino, Florence, Italy
| | - Lorenzo Sorace
- Department of Chemistry "Ugo Schiff", DICUS and INSTM Research Unit, University of Florence, Via della Lastruccia 3-13, 50019 Sesto Fiorentino, Florence, Italy
| | - Mauro Perfetti
- Department of Chemistry "Ugo Schiff", DICUS and INSTM Research Unit, University of Florence, Via della Lastruccia 3-13, 50019 Sesto Fiorentino, Florence, Italy
| |
Collapse
|
2
|
Guo FS, He M, Huang GZ, Giblin SR, Billington D, Heinemann FW, Tong ML, Mansikkamäki A, Layfield RA. Discovery of a Dysprosium Metallocene Single-Molecule Magnet with Two High-Temperature Orbach Processes. Inorg Chem 2022; 61:6017-6025. [PMID: 35420419 PMCID: PMC9044448 DOI: 10.1021/acs.inorgchem.1c03980] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
Magnetic bistability
in single-molecule magnets (SMMs) is a potential
basis for new types of nanoscale information storage material. The
standard model for thermally activated relaxation of the magnetization
in SMMs is based on the occurrence of a single Orbach process. Here,
we show that incorporating a phosphorus atom into the framework of
the dysprosium metallocene [(CpiPr5)Dy(CpPEt4)]+[B(C6F5)4]− (CpiPr5 is penta-isopropylcyclopentadienyl,
CpPEt4 is tetraethylphospholyl) leads to the occurrence
of two distinct high-temperature Orbach processes, with energy barriers
of 1410(10) and 747(7) cm–1, respectively. These
barriers provide experimental evidence for two different spin–phonon
coupling regimes, which we explain with the aid of ab initio calculations.
The strong and highly axial crystal field in this SMM also allows
magnetic hysteresis to be observed up to 70 K, using a scan rate of
25 Oe s–1. In characterizing this SMM, we show that
a conventional Debye model and consideration of rotational contributions
to the spin–phonon interaction are insufficient to explain
the observed phenomena. A
phospholyl-ligated dysprosium metallocene single-molecule
magnet shows two high-temperature Orbach relaxation processes with
effective energy barriers of 1410(10) and 747(7) cm−1, and magnetic hysteresis up to 70 K when using a scan rate of 25
Oe s−1.
Collapse
Affiliation(s)
- Fu-Sheng Guo
- Department of Chemistry, School of Life Sciences, University of Sussex, Brighton BN1 9QR, U.K
| | - Mian He
- Department of Chemistry, School of Life Sciences, University of Sussex, Brighton BN1 9QR, U.K
| | - Guo-Zhang Huang
- Key Laboratory of Bioinorganic and Synthetic Chemistry of the Ministry of Education, School of Chemistry, Sun-Yat Sen University, Guangzhou 510006, P. R. China
| | - Sean R Giblin
- School of Physics and Astronomy, Cardiff University, Cardiff CF24 3AA, U.K
| | - David Billington
- School of Physics and Astronomy, Cardiff University, Cardiff CF24 3AA, U.K
| | - Frank W Heinemann
- Department of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander-University Erlangen-Nürnberg, Egerlandstrabe 1, 91058 Erlangen, Germany
| | - Ming-Liang Tong
- Key Laboratory of Bioinorganic and Synthetic Chemistry of the Ministry of Education, School of Chemistry, Sun-Yat Sen University, Guangzhou 510006, P. R. China
| | - Akseli Mansikkamäki
- NMR Research Group, University of Oulu, P.O. Box 8000, Oulu FI-90014, Finland
| | - Richard A Layfield
- Department of Chemistry, School of Life Sciences, University of Sussex, Brighton BN1 9QR, U.K
| |
Collapse
|
3
|
Briganti M, Santanni F, Tesi L, Totti F, Sessoli R, Lunghi A. A Complete Ab Initio View of Orbach and Raman Spin-Lattice Relaxation in a Dysprosium Coordination Compound. J Am Chem Soc 2021; 143:13633-13645. [PMID: 34465096 PMCID: PMC8414553 DOI: 10.1021/jacs.1c05068] [Citation(s) in RCA: 86] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Indexed: 02/07/2023]
Abstract
The unique electronic and magnetic properties of lanthanide molecular complexes place them at the forefront of the race toward high-temperature single-molecule magnets and magnetic quantum bits. The design of compounds of this class has so far being almost exclusively driven by static crystal field considerations, with an emphasis on increasing the magnetic anisotropy barrier. Now that this guideline has reached its maximum potential, a deeper understanding of spin-phonon relaxation mechanisms presents itself as key in order to drive synthetic chemistry beyond simple intuition. In this work, we compute relaxation times fully ab initio and unveil the nature of all spin-phonon relaxation mechanisms, namely Orbach and Raman pathways, in a prototypical Dy single-molecule magnet. Computational predictions are in agreement with the experimental determination of spin relaxation time and crystal field anisotropy, and show that Raman relaxation, dominating at low temperature, is triggered by low-energy phonons and little affected by further engineering of crystal field axiality. A comprehensive analysis of spin-phonon coupling mechanism reveals that molecular vibrations beyond the ion's first coordination shell can also assume a prominent role in spin relaxation through an electrostatic polarization effect. Therefore, this work shows the way forward in the field by delivering a novel and complete set of chemically sound design rules tackling every aspect of spin relaxation at any temperature.
Collapse
Affiliation(s)
- Matteo Briganti
- Department
of Chemistry “Ugo Schiff”, INSTM Research Unit, Università degli Studi di Firenze, 50019 Sesto F.no, Italy
| | - Fabio Santanni
- Department
of Chemistry “Ugo Schiff”, INSTM Research Unit, Università degli Studi di Firenze, 50019 Sesto F.no, Italy
| | - Lorenzo Tesi
- Department
of Chemistry “Ugo Schiff”, INSTM Research Unit, Università degli Studi di Firenze, 50019 Sesto F.no, Italy
| | - Federico Totti
- Department
of Chemistry “Ugo Schiff”, INSTM Research Unit, Università degli Studi di Firenze, 50019 Sesto F.no, Italy
| | - Roberta Sessoli
- Department
of Chemistry “Ugo Schiff”, INSTM Research Unit, Università degli Studi di Firenze, 50019 Sesto F.no, Italy
| | - Alessandro Lunghi
- School
of Physics, AMBER and CRANN Institute, Trinity
College, Dublin 2, Ireland
| |
Collapse
|
4
|
Cadmium-Inspired Self-Polymerization of {Ln IIICd 2} Units: Structure, Magnetic and Photoluminescent Properties of Novel Trimethylacetate 1D-Polymers (Ln = Sm, Eu, Tb, Dy, Ho, Er, Yb). Molecules 2021; 26:molecules26144296. [PMID: 34299571 PMCID: PMC8307922 DOI: 10.3390/molecules26144296] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 06/25/2021] [Accepted: 06/28/2021] [Indexed: 11/17/2022] Open
Abstract
A series of heterometallic carboxylate 1D polymers of the general formula [LnIIICd2(piv)7(H2O)2]n·nMeCN (LnIII = Sm (1), Eu (2), Tb (3), Dy (4), Ho (5), Er (6), Yb (7); piv = anion of trimethylacetic acid) was synthesized and structurally characterized. The use of CdII instead of ZnII under similar synthetic conditions resulted in the formation of 1D polymers, in contrast to molecular trinuclear complexes with LnIIIZn2 cores. All complexes 1–7 are isostructural. The luminescent emission and excitation spectra for 2–4 have been studied, the luminescence decay kinetics for 2 and 3 was measured. Magnetic properties of the complexes 3–5 and 7 have been studied; 4 and 7 exhibited the properties of field-induced single-molecule magnets in an applied external magnetic field. Magnetic properties of 4 and 7 were modelled using results of SA-CASSCF/SO-RASSI calculations and SINGLE_ANISO procedure. Based on the analysis of the magnetization relaxation and the results of ab initio calculations, it was found that relaxation in 4 predominantly occurred by the sum of the Raman and QTM mechanisms, and by the sum of the direct and Raman mechanisms in the case of 7.
Collapse
|
5
|
Mayans J, Tesi L, Briganti M, Boulon ME, Font-Bardia M, Escuer A, Sorace L. Single-Ion Anisotropy and Intramolecular Interactions in Ce III and Nd III Dimers. Inorg Chem 2021; 60:8692-8703. [PMID: 34110135 PMCID: PMC8277162 DOI: 10.1021/acs.inorgchem.1c00647] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Indexed: 12/11/2022]
Abstract
This article reports the syntheses, characterization, structural description, together with magnetic and spectroscopic properties of two isostructural molecular magnets based on the chiral ligand N,N'-bis((1,2-diphenyl-(pyridine-2-yl)methylene)-(R,R/S,S)-ethane-1,2-diamine), L1, of general formula [Ln2(RR-L1)2(Cl6)]·MeOH·1.5H2O, (Ln = Ce (1) or Nd (2)). Multifrequency electron paramagnetic resonance (EPR), cantilever torque magnetometry (CTM) measurements, and ab initio calculations allowed us to determine single-ion magnetic anisotropy and intramolecular magnetic interactions in both compounds, evidencing a more important role of the anisotropic exchange for the NdIII derivative. The comparison of experimental and theoretical data indicates that, in the case of largely rhombic lanthanide ions, ab initio calculations can fail in determining the orientation of the weakest components, while being reliable in determining their principal values. However, they remain of paramount importance to set the analysis of EPR and CTM on sound basis, thus obtaining a very precise picture of the magnetic interactions in these systems. Finally, the electronic structure of the two complexes, as obtained by this approach, is consistent with the absence of zero-field slow relaxation observed in ac susceptibility.
Collapse
Affiliation(s)
- Júlia Mayans
- Departament
de Química Inorgànica i Orgànica, Secció
Inorgànica and Institute of Nanoscience and Nanotechnology
(INUB), Universitat de Barcelona, Martí i Franques 1-11, Barcelona-08028, Spain
| | - Lorenzo Tesi
- Dipartimento
di Chimica “Ugo Schiff” & INSTM RU, Università degli Studi di Firenze, Via della Lastruccia 3-13, 50019 Sesto Fiorentino (Firenze), Italy
| | - Matteo Briganti
- Dipartimento
di Chimica “Ugo Schiff” & INSTM RU, Università degli Studi di Firenze, Via della Lastruccia 3-13, 50019 Sesto Fiorentino (Firenze), Italy
| | - Marie-Emmanuelle Boulon
- Dipartimento
di Chimica “Ugo Schiff” & INSTM RU, Università degli Studi di Firenze, Via della Lastruccia 3-13, 50019 Sesto Fiorentino (Firenze), Italy
| | - Mercè Font-Bardia
- Unitat
de Difracció de R-X, Centre Científic i Tecnològic
de la Universitat de Barcelona (CCiTUB), Universitat de Barcelona, Solé i Sabarís 1-3, 08028 Barcelona, Spain
| | - Albert Escuer
- Departament
de Química Inorgànica i Orgànica, Secció
Inorgànica and Institute of Nanoscience and Nanotechnology
(INUB), Universitat de Barcelona, Martí i Franques 1-11, Barcelona-08028, Spain
| | - Lorenzo Sorace
- Dipartimento
di Chimica “Ugo Schiff” & INSTM RU, Università degli Studi di Firenze, Via della Lastruccia 3-13, 50019 Sesto Fiorentino (Firenze), Italy
| |
Collapse
|
6
|
Briganti M, Lucaccini E, Chelazzi L, Ciattini S, Sorace L, Sessoli R, Totti F, Perfetti M. Magnetic Anisotropy Trends along a Full 4f-Series: The fn+7 Effect. J Am Chem Soc 2021; 143:8108-8115. [PMID: 34024105 PMCID: PMC8297734 DOI: 10.1021/jacs.1c02502] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Indexed: 12/12/2022]
Abstract
The combined experimental and computational study of the 13 magnetic complexes belonging to the Na[LnDOTA(H2O)] (H4DOTA = tetraazacyclododecane-N,N',N″,N‴-tetraacetic acid and Ln = Ce-Yb) family allowed us to identify a new trend: the orientation of the magnetic anisotropy tensors of derivatives differing by seven f electrons practically coincide. We name this trend the fn+7 effect. Experiments and theory fully agree on the match between the magnetic reference frames (e.g., the easy, intermediate, and hard direction). The shape of the magnetic anisotropy of some couples of ions differing by seven f electrons might seem instead different at first look, but our analysis explains a hidden similarity. We thus pave the way toward a reliable predictivity of the magnetic anisotropy of lanthanide complexes with a consequent reduced need of computational and synthetical efforts. We also offer a way to gain information on ions with a relatively small total angular momentum (i.e., Sm3+ and Eu3+) and on the radioactive Pm3+, which are difficult to investigate experimentally.
Collapse
Affiliation(s)
- Matteo Briganti
- Department
of Chemistry “U. Schiff”, University of Florence Via della Lastruccia 3-13, Sesto Fiorentino
(FI) 50019, Italy
| | - Eva Lucaccini
- Department
of Chemistry “U. Schiff”, University of Florence Via della Lastruccia 3-13, Sesto Fiorentino
(FI) 50019, Italy
| | - Laura Chelazzi
- Department
of Chemistry “U. Schiff”, University of Florence Via della Lastruccia 3-13, Sesto Fiorentino
(FI) 50019, Italy
- Center
of Crystallography, University of Florence, Via della Lastruccia 3, Sesto Fiorentino (FI) 50019, Italy
| | - Samuele Ciattini
- Department
of Chemistry “U. Schiff”, University of Florence Via della Lastruccia 3-13, Sesto Fiorentino
(FI) 50019, Italy
- Center
of Crystallography, University of Florence, Via della Lastruccia 3, Sesto Fiorentino (FI) 50019, Italy
| | - Lorenzo Sorace
- Department
of Chemistry “U. Schiff”, University of Florence Via della Lastruccia 3-13, Sesto Fiorentino
(FI) 50019, Italy
| | - Roberta Sessoli
- Department
of Chemistry “U. Schiff”, University of Florence Via della Lastruccia 3-13, Sesto Fiorentino
(FI) 50019, Italy
| | - Federico Totti
- Department
of Chemistry “U. Schiff”, University of Florence Via della Lastruccia 3-13, Sesto Fiorentino
(FI) 50019, Italy
| | - Mauro Perfetti
- Department
of Chemistry “U. Schiff”, University of Florence Via della Lastruccia 3-13, Sesto Fiorentino
(FI) 50019, Italy
| |
Collapse
|
7
|
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.
Collapse
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
| |
Collapse
|
8
|
Petrosyants SP, Babeshkin KA, Ilyukhin AB, Efimov NN. Molecular Magnets Based on Mononuclear Aqua and Aqua-Chloro Lanthanide (Tb, Dy, Er, Yb) Complexes with Bipyridine. RUSS J COORD CHEM+ 2021. [DOI: 10.1134/s1070328421030039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
9
|
Ling BK, Zhai YQ, Han J, Han T, Zheng YZ. A stable dysprosium(iii) complex with a terminal fluoride ligand showing high resolution luminescence and slow magnetic relaxation. Dalton Trans 2020; 49:6969-6973. [PMID: 32432247 DOI: 10.1039/d0dt01146k] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
An air-stable dysprosium(iii) complex, [C(NH2)3]4[DyF(piv)4](piv)2 (piv = pivalate), with a terminal fluoride ligand protected by forming extensive hydrogen bonds with peripheral guanidiniums has been isolated. Though the magnetic data failed to determine the energy barrier for the magnetic reversal (Ueff) accurately, the fine emission spectrum of the 4F9/2→6H15/2 transition at 4.2 K and ab initio calculations reveal that the Ueff is about 376(20) K, which is among the highest for high-coordinate (coordination numbers ≥ 9) lanthanide mononuclear magnets.
Collapse
Affiliation(s)
- Bo-Kai Ling
- Frontier Institute of Science and Technology (FIST), Xi'an Jiaotong University Shenzhen Research School, State Key Laboratory of Mechanical Behavior for Materials, MOE Key Laboratory for Nonequilibrium Synthesis of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy and Materials Chemistry, School of Science, Xi'an Jiaotong University, 99 Yanxiang Road, Xi'an, Shaanxi 710054, P. R. China.
| | | | | | | | | |
Collapse
|
10
|
Zhang W, Muhtadi A, Iwahara N, Ungur L, Chibotaru LF. Magnetic Anisotropy in Divalent Lanthanide Compounds. Angew Chem Int Ed Engl 2020; 59:12720-12724. [DOI: 10.1002/anie.202003399] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Indexed: 02/03/2023]
Affiliation(s)
- Weibing Zhang
- Department of Chemistry KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| | - Almas Muhtadi
- Department of Chemistry KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| | - Naoya Iwahara
- Department of Chemistry KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
- Department of Chemistry National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
| | - Liviu Ungur
- Department of Chemistry KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
- Department of Chemistry National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
| | - Liviu F. Chibotaru
- Department of Chemistry KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| |
Collapse
|
11
|
Zhang W, Muhtadi A, Iwahara N, Ungur L, Chibotaru LF. Magnetic Anisotropy in Divalent Lanthanide Compounds. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202003399] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Weibing Zhang
- Department of Chemistry KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| | - Almas Muhtadi
- Department of Chemistry KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| | - Naoya Iwahara
- Department of Chemistry KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
- Department of Chemistry National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
| | - Liviu Ungur
- Department of Chemistry KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
- Department of Chemistry National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
| | - Liviu F. Chibotaru
- Department of Chemistry KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| |
Collapse
|
12
|
Yin B, Li CC. A method to predict both the relaxation time of quantum tunneling of magnetization and the effective barrier of magnetic reversal for a Kramers single-ion magnet. Phys Chem Chem Phys 2020; 22:9923-9933. [DOI: 10.1039/d0cp00933d] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A method to predict the relaxation time of quantum tunneling of magnetization and the magnetic reversal barrier with efficiency and reliability.
Collapse
Affiliation(s)
- Bing Yin
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an
- P. R. China
| | - Chao-Chao Li
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an
- P. R. China
| |
Collapse
|
13
|
Gálico DA, Marin R, Brunet G, Errulat D, Hemmer E, Sigoli FA, Moilanen JO, Murugesu M. Triplet‐State Position and Crystal‐Field Tuning in Opto‐Magnetic Lanthanide Complexes: Two Sides of the Same Coin. Chemistry 2019; 25:14625-14637. [DOI: 10.1002/chem.201902837] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 07/31/2019] [Indexed: 12/13/2022]
Affiliation(s)
- Diogo A. Gálico
- Department of Chemistry and Biomolecular Sciences University of Ottawa Ottawa Ontario K1N 6N5 Canada
- Institute of Chemistry University of Campinas UNICAMP, P.O. Box 6154 Campinas Sao Paulo 13083-970 Brazil
| | - Riccardo Marin
- Department of Chemistry and Biomolecular Sciences University of Ottawa Ottawa Ontario K1N 6N5 Canada
| | - Gabriel Brunet
- Department of Chemistry and Biomolecular Sciences University of Ottawa Ottawa Ontario K1N 6N5 Canada
| | - Dylan Errulat
- Department of Chemistry and Biomolecular Sciences University of Ottawa Ottawa Ontario K1N 6N5 Canada
| | - Eva Hemmer
- Department of Chemistry and Biomolecular Sciences University of Ottawa Ottawa Ontario K1N 6N5 Canada
| | - Fernando A. Sigoli
- Institute of Chemistry University of Campinas UNICAMP, P.O. Box 6154 Campinas Sao Paulo 13083-970 Brazil
| | - Jani O. Moilanen
- Department of Chemistry, Nanoscience Centre University of Jyväskylä, P.O. Box 35 40014 Jyväskylä Finland
| | - Muralee Murugesu
- Department of Chemistry and Biomolecular Sciences University of Ottawa Ottawa Ontario K1N 6N5 Canada
| |
Collapse
|
14
|
Chiral mononuclear lanthanide complexes derived from chiral Schiff bases: Structural and magnetic studies. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.05.051] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
15
|
Briganti M, Garcia GF, Jung J, Sessoli R, Le Guennic B, Totti F. Covalency and magnetic anisotropy in lanthanide single molecule magnets: the DyDOTA archetype. Chem Sci 2019; 10:7233-7245. [PMID: 31588292 PMCID: PMC6685353 DOI: 10.1039/c9sc01743g] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 06/08/2019] [Indexed: 01/19/2023] Open
Abstract
Lanthanide ions when complexed by polyamino-polycarboxylate chelators form a class of compounds of paramount importance in several research and technological areas, particularly in the fields of magnetic resonance and molecular magnetism. Indeed, the gadolinium derivative is one of the most employed contrast agents for magnetic resonance imaging while the dysprosium one belongs to a new generation of contrast agents for T2-weighted MRI. In molecular magnetism, Single Molecule Magnets (SMMs) containing lanthanide ions have become readily popular in the chemistry and physics communities since record energy barriers to the reversal of magnetization were reported. The success of lanthanide complexes lies in their large anisotropy due to the contribution of the unquenched orbital angular momentum. However, only a few efforts have been made so far to understand how the f-orbitals can be influenced by the surrounding ligands. The outcomes have been rationalized using mere electrostatic perturbation models. In the archetype compound [Na{Dy(DOTA) (H2O)}]·4H2O (Na{DyDOTA}·4H2O) an unexpected easy axis of magnetization perpendicular to the pseudo-tetragonal axis of the molecule was found. Interestingly, a dependency of the orientation of the principal magnetization axis on the simple rotation of the coordinating apical water molecule (AWM) - highly relevant for MRI contrast - around the Dy-OAWM bond was predicted by ab initio calculations, too. However, such a behaviour has been contested in a subsequent paper justifying their conclusions on pure electrostatic assumptions. In this paper, we want to shed some light on the nature of the subtle effects induced by the water molecule on the magnetic properties of the DyDOTA archetype complex. Therefore, we have critically reviewed the structural models already published in the literature along with new ones, showing how the easy axis orientation can dangerously depend on the chosen model. The different computed behaviors of the orientation of the easy axis of magnetization have been rationalized as a function of the energy gap between the ground and the first excited doublet. Magneto-structural correlations together with a mapping of the electrostatic potential generated by the ligands around the Dy(iii) ion through a multipolar expansion have also been used to evidence and quantify the covalent contribution of the AWM orbitals.
Collapse
Affiliation(s)
- Matteo Briganti
- Dipartimento di Chimica "U. Schiff" and UdR INSTM , Università degli Studi di Firenze , Via della Lastruccia 3-13 , 50019 Sesto Fiorentino , Italy .
- Universidade Federal Fluminense , Instituto de Física , Niterói , Rio de Janeiro , Brazil
| | - Guglielmo Fernandez Garcia
- Dipartimento di Chimica "U. Schiff" and UdR INSTM , Università degli Studi di Firenze , Via della Lastruccia 3-13 , 50019 Sesto Fiorentino , Italy .
- Univ Rennes , CNRS , ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226 , F-35000 Rennes , France .
| | - Julie Jung
- Univ Rennes , CNRS , ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226 , F-35000 Rennes , France .
| | - Roberta Sessoli
- Dipartimento di Chimica "U. Schiff" and UdR INSTM , Università degli Studi di Firenze , Via della Lastruccia 3-13 , 50019 Sesto Fiorentino , Italy .
| | - Boris Le Guennic
- Univ Rennes , CNRS , ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226 , F-35000 Rennes , France .
| | - Federico Totti
- Dipartimento di Chimica "U. Schiff" and UdR INSTM , Università degli Studi di Firenze , Via della Lastruccia 3-13 , 50019 Sesto Fiorentino , Italy .
| |
Collapse
|
16
|
Roy S, Hari N, Mohanta S. Synthesis, Crystal Structures, Magnetic Properties, and Fluorescence of Two Heptanuclear Co
III
4
Ln
III
3
Compounds (Ln = Gd
III
, Dy
III
): Multiple Relaxation Dynamics in the Dy
III
Analogue. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900383] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Shuvayan Roy
- Department of Chemistry Inorganic Chemistry Section University of Calcutta 92 A. P. C Road 700 009 Kolkata India
| | - Nairita Hari
- Department of Chemistry Inorganic Chemistry Section University of Calcutta 92 A. P. C Road 700 009 Kolkata India
| | - Sasankasekhar Mohanta
- Department of Chemistry Inorganic Chemistry Section University of Calcutta 92 A. P. C Road 700 009 Kolkata India
| |
Collapse
|
17
|
Cai LZ, Zhang W, Zhu ZX, Ru J, Yao MX. Synthesis, structures and magnetic properties of cyano- and amide-bridged FeIII-LnIII tetranuclear heterometallic clusters. J COORD CHEM 2019. [DOI: 10.1080/00958972.2019.1581923] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Li-Zheng Cai
- School of Chemistry & Molecular Engineering, Nanjing Tech University, Nanjing, P. R. China
| | - Wei Zhang
- School of Chemistry & Molecular Engineering, Nanjing Tech University, Nanjing, P. R. China
| | - Zhao-Xia Zhu
- School of Chemistry & Molecular Engineering, Nanjing Tech University, Nanjing, P. R. China
| | - Jing Ru
- School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, P. R. China
| | - Min-Xia Yao
- School of Chemistry & Molecular Engineering, Nanjing Tech University, Nanjing, P. R. China
| |
Collapse
|
18
|
Bazhina ES, Aleksandrov GG, Kiskin MA, Korlyukov AA, Efimov NN, Bogomyakov AS, Starikova AA, Mironov VS, Ugolkova EA, Minin VV, Sidorov AA, Eremenko IL. The First Series of Heterometallic Ln
III
‐V
IV
Complexes Based on Substituted Malonic Acid Anions: Synthesis, Structure and Magnetic Properties. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201801034] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Evgeniya S. Bazhina
- N.S. Kurnakov Institute of General and Inorganic Chemistry the Russian Academy of Sciences Leninsky Ave. 31 119991 Moscow Russian Federation
| | - Grigory G. Aleksandrov
- N.S. Kurnakov Institute of General and Inorganic Chemistry the Russian Academy of Sciences Leninsky Ave. 31 119991 Moscow Russian Federation
| | - Mikhail A. Kiskin
- N.S. Kurnakov Institute of General and Inorganic Chemistry the Russian Academy of Sciences Leninsky Ave. 31 119991 Moscow Russian Federation
| | - Alexander A. Korlyukov
- A.N. Nesmeyanov Institute of Organoelement Compounds the Russian Academy of Sciences Vavilova St. 28 119991 Moscow Russian Federation
| | - Nikolay N. Efimov
- N.S. Kurnakov Institute of General and Inorganic Chemistry the Russian Academy of Sciences Leninsky Ave. 31 119991 Moscow Russian Federation
| | - Artem S. Bogomyakov
- International Tomography Center Siberian Branch of the Russian Academy of Sciences Institutskaya St. 3a 630090 Novosibirsk Russian Federation
| | - Alyona A. Starikova
- Institute of Physical and Organic Chemistry Southern Federal University Stachka Ave. 194/2 344090 Rostov‐on‐Don Russian Federation
| | - Vladimir S. Mironov
- Shubnikov Institute of Crystallography of Federal Scientific Research Centre “Crystallography and Photonics” the Russian Academy of Sciences Leninsky Ave. 59 119333 Moscow Russian Federation
| | - Elena A. Ugolkova
- N.S. Kurnakov Institute of General and Inorganic Chemistry the Russian Academy of Sciences Leninsky Ave. 31 119991 Moscow Russian Federation
| | - Vadim V. Minin
- N.S. Kurnakov Institute of General and Inorganic Chemistry the Russian Academy of Sciences Leninsky Ave. 31 119991 Moscow Russian Federation
| | - Alexey A. Sidorov
- N.S. Kurnakov Institute of General and Inorganic Chemistry the Russian Academy of Sciences Leninsky Ave. 31 119991 Moscow Russian Federation
| | - Igor L. Eremenko
- N.S. Kurnakov Institute of General and Inorganic Chemistry the Russian Academy of Sciences Leninsky Ave. 31 119991 Moscow Russian Federation
| |
Collapse
|
19
|
Aravena D. Ab Initio Prediction of Tunneling Relaxation Times and Effective Demagnetization Barriers in Kramers Lanthanide Single-Molecule Magnets. J Phys Chem Lett 2018; 9:5327-5333. [PMID: 30149712 DOI: 10.1021/acs.jpclett.8b02359] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Single-molecule magnets (SMMs) are promising candidates for molecule-based quantum information devices. Their main limitation is their cryogenic operative temperature. To achieve devices performing at higher temperatures, demagnetization mechanisms must be suppressed by chemical tuning. Electronic structure calculations can provide useful information to rationalize SMM behavior, but they do not provide a direct prediction for the key experimental parameters describing magnetic relaxation (i.e., tunneling relaxation time (τQT) and effective demagnetization barrier ( Ueff)). In this Letter, a first-principles model is proposed to predict τQT and Ueff for mononuclear, half-integer spin SMMs, allowing direct comparison with experiment. Model accuracy was assessed against experimental data for 18 mononuclear LnIII complexes (15 DyIII and 3 ErIII) and applied to 3 of the current best-performing SMMs, correctly predicting nontrivial relaxation pathways. The model shows that the combination of single-ion anisotropy and spin-spin dipolar coupling can account for the major part of tunneling demagnetization for the studied systems.
Collapse
Affiliation(s)
- Daniel Aravena
- Departamento de Química de los Materiales , Facultad de Química y Biología, Universidad de Santiago de Chile , Casilla 40, Correo 33 , Santiago , Chile
| |
Collapse
|
20
|
Rousset E, Piccardo M, Boulon M, Gable RW, Soncini A, Sorace L, Boskovic C. Slow Magnetic Relaxation in Lanthanoid Crown Ether Complexes: Interplay of Raman and Anomalous Phonon Bottleneck Processes. Chemistry 2018; 24:14768-14785. [DOI: 10.1002/chem.201802779] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Indexed: 11/12/2022]
Affiliation(s)
- Elodie Rousset
- School of Chemistry University of Melbourne Victoria 3010 Australia
| | - Matteo Piccardo
- School of Chemistry University of Melbourne Victoria 3010 Australia
| | - Marie‐Emmanuelle Boulon
- UdR INSTM and Department of Chemistry “U. Schiff” University of Florence 50019 Sesto Fiorentino (FI) Italy
| | - Robert W. Gable
- School of Chemistry University of Melbourne Victoria 3010 Australia
| | | | - Lorenzo Sorace
- UdR INSTM and Department of Chemistry “U. Schiff” University of Florence 50019 Sesto Fiorentino (FI) Italy
| | - Colette Boskovic
- School of Chemistry University of Melbourne Victoria 3010 Australia
| |
Collapse
|
21
|
Wei J, Hsu T, Wang C, Kuo C, Lin P. Alternate Synthetic Pathway Leading to Isolation of a Dinuclear Single‐Molecule Magnet. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800327] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jun‐Yu Wei
- Department of Chemistry National Chung Hsing University 250 Kuo Kuang Rd. 402 Taichung Taiwan
| | - Ting‐Jung Hsu
- Department of Chemistry National Chung Hsing University 250 Kuo Kuang Rd. 402 Taichung Taiwan
| | - Chia‐Wei Wang
- Department of Chemistry National Chung Hsing University 250 Kuo Kuang Rd. 402 Taichung Taiwan
| | - Che‐Jung Kuo
- Department of Chemistry National Chung Hsing University 250 Kuo Kuang Rd. 402 Taichung Taiwan
| | - Po‐Heng Lin
- Department of Chemistry National Chung Hsing University 250 Kuo Kuang Rd. 402 Taichung Taiwan
| |
Collapse
|
22
|
Yang JW, Tian YM, Tao J, Chen P, Li HF, Zhang YQ, Yan PF, Sun WB. Modulation of the Coordination Environment around the Magnetic Easy Axis Leads to Significant Magnetic Relaxations in a Series of 3d-4f Schiff Complexes. Inorg Chem 2018; 57:8065-8077. [PMID: 29965732 DOI: 10.1021/acs.inorgchem.8b00056] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A series of Salen-type Zn(II)-Dy(III) complexes [L1Zn(II)ClDy(III)(acac)2]·H2O (1), [L1Zn(II)BrDy(III)(acac)2]·H2O (2), [L1Zn(II)(H2O)Dy(III)(acac)2]·CH2Cl2·PF6 (3), [L2Zn(II)(H2O)Dy(III)(acac)2]·PF6 (4), and Co(III)-Dy(III) complexes [L1Co(III)Br2Dy(III)(acac)2]·CH2Cl2 (5), [L2Co(III)Cl2Dy(III)(acac)Cl(MeO)] (6), [L2Co(III)Cl2Dy(III)(acac)Cl(H2O)] (7), and [L2Co(III)Cl2Dy(III)(NO3)2(MeO)] (8) heterobinuclear single-molecule magnets (SMMs) were synthesized and magnetically characterized. These complexes were constructed by incorporating diamagnetic Zn(II) and Co(III) ions with acetylacetone (acac) and compartmental Schiff-base ligands (H2L1 = N, N'-bis(2-oxy-3-methoxybenzylidene)-1,2-phenylenediamine; H2L2 = N, N'-bis(2-oxy-3-methoxybenzylidene)-1,2-diaminocyclohexane). In the Zn(II)-Dy(III) (1-4) system, the coordination environments of the Dy(III) ions are nearly identical, but the apical coordination atom to the Zn(II) ion is different. Complexes 1, 2, and 4 displayed no magnetic relaxation in the absence of external magnetic field, but complex 3 displayed more pronounced SMM behavior with a relaxation energy barrier Ueff/ kB 38 K and magnetic hysteresis at 1.8 K. The SMM performances of 5, 6, and 7 were enhanced significantly by incorporating an octahedral Co(III) instead of square-pyramidal Zn(II) and replacing one of acac- group around Dy(III) ion by a neutral O atom, displaying Ueff of 167, 118, and 75 K as well as magnetic hysteresis up to 3.5 K. These studies indicated that the remote diamagnetic Zn(II) and Co(III) ions played a key role, and the SMM properties were very strongly related to the special coordination atoms configuration around Dy(III) ion. When this coordination configuration around was broken as 8 exhibited, however, it resulted in a dramatically decreased SMM performance. From this work, the key factors that significantly affect the SMM performance of these heteronuclear Zn(II)/Co(III)-Dy(III) SMMs are unambiguously presented.
Collapse
Affiliation(s)
- Jing-Wei Yang
- Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education, School of Chemistry and Material Science , Heilongjiang University , 74 Xuefu Road , Harbin 150080 , P. R. China
| | - Yong-Mei Tian
- Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education, School of Chemistry and Material Science , Heilongjiang University , 74 Xuefu Road , Harbin 150080 , P. R. China
| | - Jin Tao
- Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology , Nanjing Normal University , Nanjing 210023 , China
| | - Peng Chen
- Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education, School of Chemistry and Material Science , Heilongjiang University , 74 Xuefu Road , Harbin 150080 , P. R. China
| | - Hong-Feng Li
- Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education, School of Chemistry and Material Science , Heilongjiang University , 74 Xuefu Road , Harbin 150080 , P. R. China
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology , Nanjing Normal University , Nanjing 210023 , China
| | - Peng-Fei Yan
- Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education, School of Chemistry and Material Science , Heilongjiang University , 74 Xuefu Road , Harbin 150080 , P. R. China
| | - Wen-Bin Sun
- Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education, School of Chemistry and Material Science , Heilongjiang University , 74 Xuefu Road , Harbin 150080 , P. R. China.,Key Laboratory of Chemical Engineering Process & Technology for High-Efficiency Conversion , 74 Xuefu Road , Harbin 150080 , P. R. China
| |
Collapse
|
23
|
Bar AK, Kalita P, Singh MK, Rajaraman G, Chandrasekhar V. Low-coordinate mononuclear lanthanide complexes as molecular nanomagnets. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.03.022] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
24
|
Bazhina ES, Bovkunova AA, Medved'ko AV, Varaksina EA, Taidakov IV, Efimov NN, Kiskin MA, Eremenko IL. Lanthanide(III) (Eu, Gd, Tb, Dy) Complexes Derived from 4-(Pyridin-2-yl)methyleneamino-1,2,4-triazole: Crystal Structure, Magnetic Properties, and Photoluminescence. Chem Asian J 2018; 13:2060-2068. [PMID: 29799672 DOI: 10.1002/asia.201800511] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 05/24/2018] [Indexed: 11/11/2022]
Abstract
The reaction of lanthanide(III) nitrates with 4-(pyridin-2-yl)methyleneamino-1,2,4-triazole (L) was studied. The compounds [Ln(NO3 )3 (H2 O)3 ]⋅2 L, in which Ln=Eu (1), Gd (2), Tb (3), or Dy (4), obtained in a mixture of MeCN/EtOH have the same structure, as shown by XRD. In the crystals of these compounds, the mononuclear complex units [Ln(NO3 )3 (H2 O)3 ] are linked to L molecules through intermolecular hydrogen-bonding interactions to form a 2D polymeric supramolecular architecture. An investigation into the optical characteristics of the Eu3+ -, Tb3+ -, and Dy3+ -containing compounds (1, 3, and 4) showed that these complexes displayed metal-centered luminescence. According to magnetic measurements, compound 4 exhibits single-ion magnet behavior, with ΔEeff /kB =86 K in a field of 1500 Oe.
Collapse
Affiliation(s)
- Evgeniya S Bazhina
- N. S. Kurnakov Institute of General and Inorganic Chemistry, of the Russian Academy of Sciences, Leninsky prosp. 31, 119991, Moscow, Russia
| | - Anna A Bovkunova
- N. S. Kurnakov Institute of General and Inorganic Chemistry, of the Russian Academy of Sciences, Leninsky prosp. 31, 119991, Moscow, Russia
| | - Alexey V Medved'ko
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory 1/3, 119991, Moscow, Russia
| | - Evgeniya A Varaksina
- A. N. Nesmeyanov Institute of Organoelement Compounds, of the Russian Academy of Sciences, Vavilov St. 28, 119991, Moscow, Russia
- P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Leninsky prosp. 53, 119991, Moscow, Russia
- Moscow Institute of Physics and Technology, Institutsky Lane 9, 141701, Dolgoprudny, Moscow Region, Russia
| | - Ilya V Taidakov
- P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Leninsky prosp. 53, 119991, Moscow, Russia
| | - Nikolay N Efimov
- N. S. Kurnakov Institute of General and Inorganic Chemistry, of the Russian Academy of Sciences, Leninsky prosp. 31, 119991, Moscow, Russia
| | - Mikhail A Kiskin
- N. S. Kurnakov Institute of General and Inorganic Chemistry, of the Russian Academy of Sciences, Leninsky prosp. 31, 119991, Moscow, Russia
| | - Igor L Eremenko
- N. S. Kurnakov Institute of General and Inorganic Chemistry, of the Russian Academy of Sciences, Leninsky prosp. 31, 119991, Moscow, Russia
- A. N. Nesmeyanov Institute of Organoelement Compounds, of the Russian Academy of Sciences, Vavilov St. 28, 119991, Moscow, Russia
| |
Collapse
|
25
|
Buvaylo EA, Kokozay VN, Makhankova VG, Melnyk AK, Korabik M, Witwicki M, Skelton BW, Vassilyeva OY. Synthesis, Characterization, and Magnetic Properties of a Series of Copper(II) Chloride Complexes of Pyridyliminebenzoic Acids. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201701391] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Elena A. Buvaylo
- Department of Chemistry Taras Shevchenko National University of Kyiv 64/13 Volodymyrska str. 01601 Kyiv Ukraine
| | - Vladimir N. Kokozay
- Department of Chemistry Taras Shevchenko National University of Kyiv 64/13 Volodymyrska str. 01601 Kyiv Ukraine
| | - Valeriya G. Makhankova
- Department of Chemistry Taras Shevchenko National University of Kyiv 64/13 Volodymyrska str. 01601 Kyiv Ukraine
| | - Andrii K. Melnyk
- Institute for Sorption and Problems of Endoecology The National Academy of Sciences of Ukraine 13 Generala Naumova str. 03164 Kyiv Ukraine
| | - Maria Korabik
- Faculty of Chemistry University of Wroclaw F. Joliot‐Curie 14 50‐383 Wroclaw Poland
| | - Maciej Witwicki
- Faculty of Chemistry University of Wroclaw F. Joliot‐Curie 14 50‐383 Wroclaw Poland
| | - Brian W. Skelton
- School of Molecular Sciences, M310 University of Western Australia 6009 Perth WA Australia
| | - Olga Yu. Vassilyeva
- Department of Chemistry Taras Shevchenko National University of Kyiv 64/13 Volodymyrska str. 01601 Kyiv Ukraine
| |
Collapse
|
26
|
Huang G, Fernandez-Garcia G, Badiane I, Camarra M, Freslon S, Guillou O, Daiguebonne C, Totti F, Cador O, Guizouarn T, Le Guennic B, Bernot K. Magnetic Slow Relaxation in a Metal-Organic Framework Made of Chains of Ferromagnetically Coupled Single-Molecule Magnets. Chemistry 2018; 24:6983-6991. [DOI: 10.1002/chem.201800095] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Gang Huang
- Univ. Rennes, INSA Rennes, CNRS; ISCR (Institut des Sciences Chimiques de Rennes) UMR 6226; 35000 Rennes France
| | - Guglielmo Fernandez-Garcia
- Univ. Rennes, CNRS; ISCR (Institut des Sciences Chimiques de Rennes) UMR 6226; 35000 Rennes France
- Laboratory of Molecular Magnetism (LaMM); Università degli studi di Firenze, INSTM unit; Via della lastruccia 3 50019 Sesto Fiorentino Italy
| | - Insa Badiane
- Univ. Rennes, INSA Rennes, CNRS; ISCR (Institut des Sciences Chimiques de Rennes) UMR 6226; 35000 Rennes France
- LCPM-Groupe “Matériaux Inorganiques: Chimie Douce et Cristallographie”; Université Assane Seck de Ziguinchor; BP 523 Ziguinchor Sénégal
| | - Magatte Camarra
- Univ. Rennes, INSA Rennes, CNRS; ISCR (Institut des Sciences Chimiques de Rennes) UMR 6226; 35000 Rennes France
- LCPM-Groupe “Matériaux Inorganiques: Chimie Douce et Cristallographie”; Université Assane Seck de Ziguinchor; BP 523 Ziguinchor Sénégal
| | - Stéphane Freslon
- Univ. Rennes, INSA Rennes, CNRS; ISCR (Institut des Sciences Chimiques de Rennes) UMR 6226; 35000 Rennes France
| | - Olivier Guillou
- Univ. Rennes, INSA Rennes, CNRS; ISCR (Institut des Sciences Chimiques de Rennes) UMR 6226; 35000 Rennes France
| | - Carole Daiguebonne
- Univ. Rennes, INSA Rennes, CNRS; ISCR (Institut des Sciences Chimiques de Rennes) UMR 6226; 35000 Rennes France
| | - Federico Totti
- Laboratory of Molecular Magnetism (LaMM); Università degli studi di Firenze, INSTM unit; Via della lastruccia 3 50019 Sesto Fiorentino Italy
| | - Olivier Cador
- 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
| | - Boris Le Guennic
- Univ. Rennes, CNRS; ISCR (Institut des Sciences Chimiques de Rennes) UMR 6226; 35000 Rennes France
| | - Kevin Bernot
- Univ. Rennes, INSA Rennes, CNRS; ISCR (Institut des Sciences Chimiques de Rennes) UMR 6226; 35000 Rennes France
| |
Collapse
|
27
|
Liu MJ, Yuan J, Tao J, Zhang YQ, Liu CM, Kou HZ. Rhodamine Salicylaldehyde Hydrazone Dy(III) Complexes: Fluorescence and Magnetism. Inorg Chem 2018; 57:4061-4069. [DOI: 10.1021/acs.inorgchem.8b00219] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mei-Jiao Liu
- Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Juan Yuan
- Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Jin Tao
- Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, P. R. China
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, P. R. China
| | - Cai-Ming Liu
- Beijing National Laboratory for Molecular Sciences, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Hui-Zhong Kou
- Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| |
Collapse
|
28
|
Gupta T, Singh MK, Rajaraman G. Role of Ab Initio Calculations in the Design and Development of Lanthanide Based Single Molecule Magnets. TOP ORGANOMETAL CHEM 2018. [DOI: 10.1007/3418_2018_5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
|
29
|
Perfetti M. Cantilever torque magnetometry on coordination compounds: from theory to experiments. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.08.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
30
|
Molecular magnetism, quo vadis? A historical perspective from a coordination chemist viewpoint☆. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.03.004] [Citation(s) in RCA: 240] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
31
|
Dong HM, Li HY, Zhang YQ, Yang EC, Zhao XJ. Magnetic Relaxation Dynamics of a Centrosymmetric Dy2 Single-Molecule Magnet Triggered by Magnetic-Site Dilution and External Magnetic Field. Inorg Chem 2017; 56:5611-5622. [DOI: 10.1021/acs.inorgchem.6b03089] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hui-Ming Dong
- Department of Chemistry,
Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, People’s Republic of China
- College of Chemistry, Key
Laboratory of Inorganic−Organic Hybrid Functional Material
Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure
and Performance for Functional Molecules, Tianjin Normal University, Tianjin 300387, People’s Republic of China
| | - Hai-Yan Li
- College of Chemistry, Key
Laboratory of Inorganic−Organic Hybrid Functional Material
Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure
and Performance for Functional Molecules, Tianjin Normal University, Tianjin 300387, People’s Republic of China
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for
NSLSCS, School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, People’s Republic of China
| | - En-Cui Yang
- College of Chemistry, Key
Laboratory of Inorganic−Organic Hybrid Functional Material
Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure
and Performance for Functional Molecules, Tianjin Normal University, Tianjin 300387, People’s Republic of China
| | - Xiao-Jun Zhao
- Department of Chemistry,
Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, People’s Republic of China
- College of Chemistry, Key
Laboratory of Inorganic−Organic Hybrid Functional Material
Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure
and Performance for Functional Molecules, Tianjin Normal University, Tianjin 300387, People’s Republic of China
| |
Collapse
|
32
|
Lucaccini E, Baldoví JJ, Chelazzi L, Barra AL, Grepioni F, Costes JP, Sorace L. Electronic Structure and Magnetic Anisotropy in Lanthanoid Single-Ion Magnets with C3 Symmetry: The Ln(trenovan) Series. Inorg Chem 2017; 56:4729-4739. [DOI: 10.1021/acs.inorgchem.7b00413] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Eva Lucaccini
- Department of Chemistry
“U.Schiff” and UdR INSTM, Università degli Studi di Firenze, Via della Lastruccia 3-13, 50019 Sesto Fiorentino (FI), Italy
| | - José J. Baldoví
- Nano-Bio Spectroscopy Group and European Theoretical Spectroscopy Facility (ETSF), Universidad del País Vasco CFM CSIC-UPV/EHU-MPC & DIPC, Avenida Tolosa 72, 20018 San Sebastián, Spain
| | - Laura Chelazzi
- Department of Chemistry “G. Ciamician”, Università degli Studi di Bologna, Via Selmi 2, 40196 Bologna, Italy
| | - Anne-Laure Barra
- LNCMI-CNRS, 25 Rue des
Martyrs, BP 166, 38042 Grenoble Cedex 9, France
| | - Fabrizia Grepioni
- Department of Chemistry “G. Ciamician”, Università degli Studi di Bologna, Via Selmi 2, 40196 Bologna, Italy
| | - Jean-Pierre Costes
- Laboratoire de Chimie de Coordination du CNRS, 205, Route de Narbonne, BP 44099, 31077 Toulouse Cedex 4, France
| | - Lorenzo Sorace
- Department of Chemistry
“U.Schiff” and UdR INSTM, Università degli Studi di Firenze, Via della Lastruccia 3-13, 50019 Sesto Fiorentino (FI), Italy
| |
Collapse
|
33
|
Upadhyay A, Das C, Vaidya S, Singh SK, Gupta T, Mondol R, Langley SK, Murray KS, Rajaraman G, Shanmugam M. Role of the Diamagnetic Zinc(II) Ion in Determining the Electronic Structure of Lanthanide Single-Ion Magnets. Chemistry 2017; 23:4903-4916. [DOI: 10.1002/chem.201700399] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Apoorva Upadhyay
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai, Maharashtra 400076 India
| | - Chinmoy Das
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai, Maharashtra 400076 India
| | - Shefali Vaidya
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai, Maharashtra 400076 India
| | - Saurabh Kumar Singh
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai, Maharashtra 400076 India
| | - Tulika Gupta
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai, Maharashtra 400076 India
| | - Ranajit Mondol
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai, Maharashtra 400076 India
| | - Stuart K. Langley
- School of Science and the Environment; Division of Chemistry; Manchester Metropolitan University; Manchester M15 6BH UK
| | - Keith S. Murray
- School of Chemistry; Monash University; Clayton 3800 Victoria Australia
| | - Gopalan Rajaraman
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai, Maharashtra 400076 India
| | - Maheswaran Shanmugam
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai, Maharashtra 400076 India
| |
Collapse
|
34
|
Amjad A, Figuerola A, Sorace L. Tm(iii) complexes undergoing slow relaxation of magnetization: exchange coupling and aging effects. Dalton Trans 2017; 46:3848-3856. [PMID: 28322380 DOI: 10.1039/c6dt04691f] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The present study focuses on the dynamic magnetic behaviour of exchange coupled 3d-4f complexes containing the scarcely investigated non-Kramers Tm3+ center, the 3d metal ions being either the low-spin Fe3+ (1) or the diamagnetic Co3+ (2) ion. Both complexes display field-induced slow relaxation of magnetization. The field and temperature dependences of the relaxation rate provided indication of relevant contributions from quantum tunnelling, direct, Orbach and Raman processes, with only minor effects from exchange coupling interactions. Furthermore, the aged sample of 2 exhibited an additional relaxation process, possibly due to structural modifications accompanied by solvent loss, highlighting the importance of a careful consideration of this factor when analysing the magnetization dynamics in solvated systems.
Collapse
Affiliation(s)
- A Amjad
- INSTM Research unit & Dipartimento di Chimica "U. Schiff", Università degli Studi di Firenze, Via della Lastruccia 3, 50019 Sesto Fiorentino, Fl, Italy.
| | - A Figuerola
- Departament de Química Inorgànica i Orgànica, Secció de Química Inorgànica, i Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, Martí i Franquès 1-11, E-08028 Barcelona, Spain
| | - L Sorace
- INSTM Research unit & Dipartimento di Chimica "U. Schiff", Università degli Studi di Firenze, Via della Lastruccia 3, 50019 Sesto Fiorentino, Fl, Italy.
| |
Collapse
|
35
|
Vignesh KR, Langley SK, Murray KS, Rajaraman G. Exploring the Influence of Diamagnetic Ions on the Mechanism of Magnetization Relaxation in {Co III2Ln III2} (Ln = Dy, Tb, Ho) "Butterfly" Complexes. Inorg Chem 2017; 56:2518-2532. [PMID: 28211682 DOI: 10.1021/acs.inorgchem.6b02720] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis and magnetic and theoretical studies of three isostructural heterometallic [CoIII2LnIII2(μ3-OH)2(o-tol)4(mdea)2(NO3)2] (Ln = Dy (1), Tb (2), Ho (3)) "butterfly" complexes are reported (o-tol = o-toluate, (mdea)2- = doubly deprotonated N-methyldiethanolamine). The CoIII ions are diamagnetic in these complexes. Analysis of the dc magnetic susceptibility measurements reveal antiferromagnetic exchange coupling between the two LnIII ions for all three complexes. ac magnetic susceptibility measurements reveal single-molecule magnet (SMM) behavior for complex 1, in the absence of an external magnetic field, with an anisotropy barrier Ueff of 81.2 cm-1, while complexes 2 and 3 exhibit field induced SMM behavior, with a Ueff value of 34.2 cm-1 for 2. The barrier height for 3 could not be quantified. To understand the experimental observations, we performed DFT and ab initio CASSCF+RASSI-SO calculations to probe the single-ion properties and the nature and magnitude of the LnIII-LnIII magnetic coupling and to develop an understanding of the role the diamagnetic CoIII ion plays in the magnetization relaxation. The calculations were able to rationalize the experimental relaxation data for all complexes and strongly suggest that the CoIII ion is integral to the observation of SMM behavior in these systems. Thus, we explored further the effect that the diamagnetic CoIII ions have on the magnetization blocking of 1. We did this by modeling a dinuclear {DyIII2} complex (1a), with the removal of the diamagnetic ions, and three complexes of the types {KI2DyIII2} (1b), {ZnII2DyIII2} (1c), and {TiIV2DyIII2} (1d), each containing a different diamagnetic ion. We found that the presence of the diamagnetic ions results in larger negative charges on the bridging hydroxides (1b > 1c > 1 > 1d), in comparison to 1a (no diamagnetic ion), which reduces quantum tunneling of magnetization effects, allowing for more desirable SMM characteristics. The results indicate very strong dependence of diamagnetic ions in the magnetization blocking and the magnitude of the energy barriers. Here we propose a synthetic strategy to enhance the energy barrier in lanthanide-based SMMs by incorporating s- and d-block diamagnetic ions. The presented strategy is likely to have implications beyond the single-molecule magnets studied here.
Collapse
Affiliation(s)
- Kuduva R Vignesh
- IITB-Monash Research Academy, Indian Institute of Technology Bombay , Powai, Mumbai 400076, India
| | - Stuart K Langley
- School of Science and the Environment, Division of Chemistry, Manchester Metropolitan University , Manchester M15 6HB, U. K
| | - Keith S Murray
- School of Chemistry, Monash University , Clayton, Victoria 3800, Australia
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology Bombay , Powai, Mumbai 400076, India
| |
Collapse
|
36
|
A family of 2p-4f complexes based on indazole radical: Syntheses, structures and magnetic properties. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2016.11.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
37
|
Dunstan MA, Rousset E, Boulon ME, Gable RW, Sorace L, Boskovic C. Slow magnetisation relaxation in tetraoxolene-bridged rare earth complexes. Dalton Trans 2017; 46:13756-13767. [DOI: 10.1039/c7dt02932b] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two tetraoxolene-bridged dinuclear Dy(iii) complexes exhibit slow relaxation in ac magnetic susceptibility studies with zero-field quantum tunnelling of the magnetisation that is suppressed by the application of a dc magnetic field.
Collapse
Affiliation(s)
- Maja A. Dunstan
- School of Chemistry
- University of Melbourne
- Parkville
- Australia
| | - Elodie Rousset
- School of Chemistry
- University of Melbourne
- Parkville
- Australia
| | - Marie-Emmanuelle Boulon
- UdR INSTM and Department of Chemistry “U. Schiff”
- University of Florence
- 50019 Sesto Fiorentino
- Italy
| | - Robert W. Gable
- School of Chemistry
- University of Melbourne
- Parkville
- Australia
| | - Lorenzo Sorace
- UdR INSTM and Department of Chemistry “U. Schiff”
- University of Florence
- 50019 Sesto Fiorentino
- Italy
| | | |
Collapse
|
38
|
Konstantatos A, Sørensen MA, Bendix J, Weihe H. Lanthanide coordination complexes framed by sodium ions: slow relaxation of the magnetization in the Dy(III) derivative. Dalton Trans 2017; 46:6024-6030. [DOI: 10.1039/c7dt00863e] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Three tetranuclear lanthanide complexes framed by sodium ions were isolated and characterised and the Dy(iii) complex exhibited SMM behaviour.
Collapse
Affiliation(s)
| | | | - Jesper Bendix
- Department of Chemistry
- University of Copenhagen
- Copenhagen
- Denmark
| | - Høgni Weihe
- Department of Chemistry
- University of Copenhagen
- Copenhagen
- Denmark
| |
Collapse
|
39
|
Gavrikov AV, Koroteev PS, Efimov NN, Dobrokhotova ZV, Ilyukhin AB, Kostopoulos AK, Ariciu AM, Novotortsev VM. Novel mononuclear and 1D-polymeric derivatives of lanthanides and (η6-benzoic acid)tricarbonylchromium: synthesis, structure and magnetism. Dalton Trans 2017; 46:3369-3380. [DOI: 10.1039/c6dt04895a] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Novel derivatives of lanthanides and (η6-benzoic acid)tricarbonylchromium were synthesized and characterized; complexes of Tb, Dy, Er and Yb exhibit SMM behavior.
Collapse
Affiliation(s)
- Andrey V. Gavrikov
- N.S. Kurnakov Institute of General and Inorganic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| | - Pavel S. Koroteev
- N.S. Kurnakov Institute of General and Inorganic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| | - Nikolay N. Efimov
- N.S. Kurnakov Institute of General and Inorganic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| | - Zhanna V. Dobrokhotova
- N.S. Kurnakov Institute of General and Inorganic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| | - Andrey B. Ilyukhin
- N.S. Kurnakov Institute of General and Inorganic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| | - Andreas K. Kostopoulos
- School of Chemistry and Photon Science Institute
- The University of Manchester
- Manchester
- UK
| | - Ana-Maria Ariciu
- School of Chemistry and Photon Science Institute
- The University of Manchester
- Manchester
- UK
| | - Vladimir M. Novotortsev
- N.S. Kurnakov Institute of General and Inorganic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| |
Collapse
|
40
|
Slow Magnetic Relaxation in Chiral Helicene-Based Coordination Complex of Dysprosium. MAGNETOCHEMISTRY 2016. [DOI: 10.3390/magnetochemistry3010002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
|
41
|
Biswas S, Das S, Hossain S, Bar AK, Sutter JP, Chandrasekhar V. Tetranuclear Lanthanide(III) Complexes Containing a Square-Grid Core: Synthesis, Structure, and Magnetism. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600744] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Sourav Biswas
- Department of Chemistry; Indian Institute of Technology Kanpur; 208016 Kanpur India
| | - Sourav Das
- Department of Chemistry; Institute of Infrastructure Technology Research and Management; Near Khokhara Circle 380026 Maninagar East, Ahmedabad India
| | - Sakiat Hossain
- Department of Chemistry; Indian Institute of Technology Kanpur; 208016 Kanpur India
| | - Arun Kumar Bar
- CNRS, LCC (Laboratoire de Chimie de Coordination); 205 route de Narbonne 31077 Toulouse France
- Université de Toulouse; UPS; INPT; LCC; 31077 Toulouse Cedex 4 France
| | - Jean-Pascal Sutter
- CNRS, LCC (Laboratoire de Chimie de Coordination); 205 route de Narbonne 31077 Toulouse France
- Université de Toulouse; UPS; INPT; LCC; 31077 Toulouse Cedex 4 France
| | - Vadapalli Chandrasekhar
- Department of Chemistry; Indian Institute of Technology Kanpur; 208016 Kanpur India
- National Institute of Science Education and Research; Jatni Campus, PO: Bhimpur-Padanpur 752050 Bhubaneswar Orissa India
| |
Collapse
|
42
|
Ungur L, Chibotaru LF. Strategies toward High-Temperature Lanthanide-Based Single-Molecule Magnets. Inorg Chem 2016; 55:10043-10056. [PMID: 27508399 DOI: 10.1021/acs.inorgchem.6b01353] [Citation(s) in RCA: 282] [Impact Index Per Article: 35.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Lanthanide-based single-molecule magnets are leading materials for achieving magnetization blocking at the level of one molecule. In this paper, we examine the physical requirements for efficient magnetization blocking in single-ion complexes and identify the design principles for achieving very high magnetization blocking barriers in lanthanide-based compounds. The key condition is the preponderant covalent binding of the Ln ion to one of the ligand atoms, tremendously enhancing the axial crystal field. We also make an overview of practical schemes for the implementation of this principle. These are (1) the effective lowering of the coordination number via displacement of the Ln ion to one of the atoms in the coordination polyhedron, (2) the design of two-coordinated complexes, and (3) the stabilization of diatomic compounds in cages and on surfaces. The last proposal is appealing in connection to spintronics applications, especially via the exploration of robust and highly anisotropic [LnX] units displaying multilevel blocking barriers of thousands of Kelvin and prospects for room-temperature magnetization blocking.
Collapse
Affiliation(s)
- Liviu Ungur
- Theory of Nanomaterials Group, Chemistry Department, Katholieke Universiteit Leuven , Celestijnenlaan 200F, 3001 Leuven, Belgium.,Chemistry Department, Lund University , Getingevagen 60, 22201 Lund, Sweden
| | - Liviu F Chibotaru
- Theory of Nanomaterials Group, Chemistry Department, Katholieke Universiteit Leuven , Celestijnenlaan 200F, 3001 Leuven, Belgium
| |
Collapse
|
43
|
Amjad A, Madalan AM, Andruh M, Caneschi A, Sorace L. Slow Relaxation of Magnetization in an Isostructural Series of Zinc-Lanthanide Complexes: An Integrated EPR and AC Susceptibility Study. Chemistry 2016; 22:12849-58. [DOI: 10.1002/chem.201601996] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Indexed: 11/05/2022]
Affiliation(s)
- Asma Amjad
- INSTM Research Unit - LAMM; Dipartimento di Chimica “U-Schiff”; Università di Firenze; via della Lastruccia, 3-13 Sesto Fiorentino (FI) 50019 Italy
| | - Augustin M. Madalan
- Inorganic Chemistry Laboratory; Faculty of Chemistry; University of Bucharest; Str. Dumbrava Rosie nr. 23 020464- Bucharest Romania
| | - Marius Andruh
- Inorganic Chemistry Laboratory; Faculty of Chemistry; University of Bucharest; Str. Dumbrava Rosie nr. 23 020464- Bucharest Romania
| | - Andrea Caneschi
- INSTM Research Unit - LAMM; Dipartimento di Chimica “U-Schiff”; Università di Firenze; via della Lastruccia, 3-13 Sesto Fiorentino (FI) 50019 Italy
| | - Lorenzo Sorace
- INSTM Research Unit - LAMM; Dipartimento di Chimica “U-Schiff”; Università di Firenze; via della Lastruccia, 3-13 Sesto Fiorentino (FI) 50019 Italy
| |
Collapse
|
44
|
Mihalcea I, Perfetti M, Pineider F, Tesi L, Mereacre V, Wilhelm F, Rogalev A, Anson CE, Powell AK, Sessoli R. Spin Helicity in Chiral Lanthanide Chains. Inorg Chem 2016; 55:10068-10074. [DOI: 10.1021/acs.inorgchem.6b01010] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ionut Mihalcea
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
| | - Mauro Perfetti
- Department of Chemistry, “U. Schiff” Università di Firenze and INSTM RU Firenze via della Lastruccia 3-13, 50019 Sesto Fiorentino, Italy
| | - Francesco Pineider
- Department of Chemistry, “U. Schiff” Università di Firenze and INSTM RU Firenze via della Lastruccia 3-13, 50019 Sesto Fiorentino, Italy
- Department of Chemistry and Industrial Chemistry, University of Pisa, via Moruzzi 3, 56124 Pisa, Italy
| | - Lorenzo Tesi
- Department of Chemistry, “U. Schiff” Università di Firenze and INSTM RU Firenze via della Lastruccia 3-13, 50019 Sesto Fiorentino, Italy
| | - Valeriu Mereacre
- Institute of Inorganic
Chemistry, Karlsruhe Institute of Technology, Engesserstrasse 15, D-76131 Karlsruhe, Germany
| | - Fabrice Wilhelm
- European Synchrotron Radiation Facility (ESRF), 38043 Grenoble, France
| | - Andrei Rogalev
- European Synchrotron Radiation Facility (ESRF), 38043 Grenoble, France
| | - Christopher E. Anson
- Institute of Inorganic
Chemistry, Karlsruhe Institute of Technology, Engesserstrasse 15, D-76131 Karlsruhe, Germany
| | - Annie K. Powell
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
- Institute of Inorganic
Chemistry, Karlsruhe Institute of Technology, Engesserstrasse 15, D-76131 Karlsruhe, Germany
| | - Roberta Sessoli
- Department of Chemistry, “U. Schiff” Università di Firenze and INSTM RU Firenze via della Lastruccia 3-13, 50019 Sesto Fiorentino, Italy
| |
Collapse
|
45
|
Rigamonti L, Cotton C, Nava A, Lang H, Rüffer T, Perfetti M, Sorace L, Barra AL, Lan Y, Wernsdorfer W, Sessoli R, Cornia A. Diamondoid Structure in a Metal-Organic Framework of Fe4Single-Molecule Magnets. Chemistry 2016; 22:13705-14. [DOI: 10.1002/chem.201601383] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 05/11/2016] [Indexed: 12/20/2022]
Affiliation(s)
- Luca Rigamonti
- Dipartimento di Scienze Chimiche e Geologiche; Università degli Studi di Modena e Reggio Emilia & INSTM RU of Modena and Reggio Emilia; via G. Campi 103 41125 Modena Italy
| | - Carri Cotton
- Dipartimento di Scienze Chimiche e Geologiche; Università degli Studi di Modena e Reggio Emilia & INSTM RU of Modena and Reggio Emilia; via G. Campi 103 41125 Modena Italy
- Department of Chemistry; University of Warwick, Gibbet Hill; Coventry CV4 7AL UK
| | - Andrea Nava
- Dipartimento di Scienze Chimiche e Geologiche; Università degli Studi di Modena e Reggio Emilia & INSTM RU of Modena and Reggio Emilia; via G. Campi 103 41125 Modena Italy
- Dipartimento di Scienze Fisiche, Informatiche e Matematiche; Università degli Studi di Modena e Reggio Emilia; via G. Campi 213/a 41125 Modena Italy
| | - Heinrich Lang
- TU Chemnitz; Fakultät für Naturwissenschaften; Institut für Chemie, Anorganische Chemie; Chemnitz 09107 Germany
| | - Tobias Rüffer
- TU Chemnitz; Fakultät für Naturwissenschaften; Institut für Chemie, Anorganische Chemie; Chemnitz 09107 Germany
| | - Mauro Perfetti
- Laboratory of Molecular Magnetism (LAMM); Dipartimento di Chimica ‘Ugo Schiff'; Università degli Studi di Firenze & INSTM RU of Firenze; via della Lastruccia 3-13 50019 Sesto Fiorentino (FI) Italy
| | - Lorenzo Sorace
- Laboratory of Molecular Magnetism (LAMM); Dipartimento di Chimica ‘Ugo Schiff'; Università degli Studi di Firenze & INSTM RU of Firenze; via della Lastruccia 3-13 50019 Sesto Fiorentino (FI) Italy
| | - Anne-Laure Barra
- Laboratoire National des Champs Magnétiques Intenses (LNCMI); CNRS; 25 Avenue des Martyrs, BP 166 38042 Grenoble CEDEX 9 France
| | - Yanhua Lan
- Institut Néel; CNRS; 25 Avenue des Martyrs, BP 166 38042 Grenoble Cedex 9 France
| | - Wolfgang Wernsdorfer
- Institut Néel; CNRS; 25 Avenue des Martyrs, BP 166 38042 Grenoble Cedex 9 France
| | - Roberta Sessoli
- Laboratory of Molecular Magnetism (LAMM); Dipartimento di Chimica ‘Ugo Schiff'; Università degli Studi di Firenze & INSTM RU of Firenze; via della Lastruccia 3-13 50019 Sesto Fiorentino (FI) Italy
| | - Andrea Cornia
- Dipartimento di Scienze Chimiche e Geologiche; Università degli Studi di Modena e Reggio Emilia & INSTM RU of Modena and Reggio Emilia; via G. Campi 103 41125 Modena Italy
| |
Collapse
|
46
|
Multiple Magnetization Reversal Channels Observed in a 3d-4f Single Molecule Magnet. MAGNETOCHEMISTRY 2016. [DOI: 10.3390/magnetochemistry2020027] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
47
|
Magnetic Bistability in Lanthanide-Based Molecular Systems: The Role of Anisotropy and Exchange Interactions. INCLUDING ACTINIDES 2016. [DOI: 10.1016/bs.hpcre.2016.09.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
48
|
Li XL, Wu J, Tang J, Le Guennic B, Shi W, Cheng P. A planar triangular Dy3 + Dy3 single-molecule magnet with a toroidal magnetic moment. Chem Commun (Camb) 2016; 52:9570-3. [DOI: 10.1039/c6cc05326b] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The modification of the axial coordination ligands of the Dy3 + Dy3 triangles results in a unique Dy6 complex, in which single-molecule magnet behavior and meanwhile a toroidal magnetic moment in the ground state have been observed.
Collapse
Affiliation(s)
- Xiao-Lei Li
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Jianfeng Wu
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Jinkui Tang
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Boris Le Guennic
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS-Université de Rennes 1
- 35042 Rennes Cedex
- France
| | - Wei Shi
- Department of Chemistry
- Key Laboratory of Advanced Energy Materials Chemistry (MOE), and Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
- Tianjin 300071
- P. R. China
| | - Peng Cheng
- Department of Chemistry
- Key Laboratory of Advanced Energy Materials Chemistry (MOE), and Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
- Tianjin 300071
- P. R. China
| |
Collapse
|
49
|
Al Hareri M, Gavey EL, Regier J, Ras Ali Z, Carlos LD, Ferreira RAS, Pilkington M. Encapsulation of a [Dy(OH2)8]3+ cation: magneto-optical and theoretical studies of a caged, emissive SMM. Chem Commun (Camb) 2016; 52:11335-8. [DOI: 10.1039/c6cc03578g] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The magnetization dynamics of an emissive [Dy(OH2)8]3+ complex with local pseudo D4d symmetry encapsulated within a supramolecular cage have been unraveled by magneto-optical and ab initio studies.
Collapse
Affiliation(s)
- M. Al Hareri
- Department of Chemistry
- Brock University
- St Catharines
- Canada
| | - E. L. Gavey
- Department of Chemistry
- Brock University
- St Catharines
- Canada
| | - J. Regier
- Department of Chemistry
- Brock University
- St Catharines
- Canada
| | - Z. Ras Ali
- Department of Chemistry
- Brock University
- St Catharines
- Canada
| | - L. D. Carlos
- Physics Department and CICECO – Aveiro Institute of Materials
- University of Aveiro
- Aveiro
- Portugal
| | - R. A. S. Ferreira
- Physics Department and CICECO – Aveiro Institute of Materials
- University of Aveiro
- Aveiro
- Portugal
| | - M. Pilkington
- Department of Chemistry
- Brock University
- St Catharines
- Canada
| |
Collapse
|