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Tubau À, Zinna F, Di Bari L, Font-Bardía M, Vicente R. Dinuclear enantiopure Ln 3+ complexes with ( S-) and ( R-) 2-phenylbutyrate ligands. Luminescence, CPL and magnetic properties. Dalton Trans 2024. [PMID: 39078094 DOI: 10.1039/d4dt01295j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/31/2024]
Abstract
The reaction of Ln(NO3)2·6H2O (Ln = Nd, Sm, Eu, Tb, Dy, Tm and Yb) with the respective enantiopure (R)-(-)-2-phenylbutyric or (S)-(+)-2-phenylbutyric acid (R/S-2-HPhBut) and 4,7-diphenyl-1,10-phenanthroline (Bphen) allows the isolation of chiral dinuclear compounds of the formula [Ln2(μ-R/S-2-PhBut)4(R/S-2PhBut)2(Bphen)2] where Ln = Nd3+ (R/S-Nd-a), Sm3+ (R/S-Sm-a), Eu3+ (R/S-Eu-a), Tb3+ (R/S-Tb-a and R/S-Tb-b), Dy3+ (R/S-Dy-a and R/S-Dy-b), Tm3+ (R/S-Tm-b) and Yb3+ (R/S-Yb-b). Single crystal X-ray diffraction was performed for compounds S-Eu-a and S-Tm-b. Powder crystal X-ray diffraction was performed for all complexes. From the crystallographic data two different structural motifs were found which are referred to as structure type a and structure type b. In structure type a, the Ln3+ atoms are bridged through four R or S-2-PhBut ligands with two different kinds of coordination modes whereas in structure type b the two Ln3+ atoms are bridged through four R or S-2-PhBut ligands showing only one kind of coordination mode. For those lanthanide ions exhibiting both structure types, Tb3+ and Dy3+, a difference in the luminescence and magnetism behavior is observed. All compounds (except R/S-Tm-b) exhibit sensitized luminescence, notably the Eu3+ and Tb3+ analogues. Circular Dichroism (CD) and Circular Polarized Luminescence (CPL) in the solid state and in 1 mM dichloromethane (DCM) solutions are reported, leading to improved chiroptical properties for the DCM solutions. The asymmetry factor (glum) in 1 mM DCM is ±0.02 (+ for R-Eu-a) for the magnetically allowed transition 5D0 → 7F1 and ±0.03 (+ for R-Tb-a and R-Tb-b) for the 5D4 → 7F5 transition. Magnetic properties of all compounds were studied and the Dy3+ compound with the structural motif b (R-Dy-b) shows Single Molecular Magnet (SMM) behavior under a 0 T magnetic field. However, R-Dy-a is a field-induced SMM.
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Affiliation(s)
- Ànnia Tubau
- Departament de Química Inorgànica i Orgànica, Secció de Química Inorgànica, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain.
| | - Francesco Zinna
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via Moruzzi 13, I 56124 Pisa, Italy.
| | - Lorenzo Di Bari
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via Moruzzi 13, I 56124 Pisa, Italy.
| | - Mercè Font-Bardía
- Departament de Mineralogia, Cristal·lografia i Dipòsits Minerals and Unitat de Difracció de Raigs X, Centres Científics i Tecnològics de la Universitat de Barcelona (CCiTUB), Universitat de Barcelona, Solé i Sabarís 1-3, 08028 Barcelona, Spain
| | - Ramon Vicente
- Departament de Química Inorgànica i Orgànica, Secció de Química Inorgànica, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain.
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2
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Wang JL, Chen JT, Yan H, Wang TT, Zhang YQ, Sun WB. Constructing high axiality mononuclear dysprosium molecular magnets via a regulation-of-co-ligands strategy. Dalton Trans 2024; 53:10982-10990. [PMID: 38874222 DOI: 10.1039/d4dt00040d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2024]
Abstract
Two lanthanide complexes with formulae [DyIII(LN5)(pentafluoro-PhO)3] (1) and [DyIII(LN5)(2,6-difluoro-PhO)2](BPh4) (2) (LN5 = 2,14-dimethyl-3,6,10,13,19-pentaazabicyclo[13.3.1]nonadecal (19),2,13,15,17-pentaene) were structurally and magnetically characterized. DyIII ions lie in the cavity of a five coordinate nitrogen macrocycle, and in combination with the introduction of multi-fluorinated monodentate phenoxyl coligands a high axiality coordination symmetry is built. Using the pentafluorophenol co-ligand, complex 1 with a D2d coordination environment, is obtained and displays moderate single-molecule magnets (SMMs) behavior. When difluorophenol co-ligands were used, a higher local axisymmetric pentagonal bipyramidal coordination geometry was observed in complex 2, which displays apparent slow magnetic relaxation behavior with a hysteresis temperature of up to 5 K. Further magnetic studies of diluted samples combined with ab initio calculations indicate that the high axiality plays a crucial role in suppressing quantum tunneling of magnetization (QTM) and consequently results in good slow magnetic relaxation behavior. Different fluoro-substituted phenoxyl co-ligands have phenoloxy oxygen atoms with different electrostatic potentials as well as a different number of phenoloxy coligands along the magnetic axis, resulting in different ligand field strengths and coordination symmetries.
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Affiliation(s)
- Jia-Ling Wang
- 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.
| | - Ji-Tun 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.
| | - Han 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.
| | - Tian-Tian Wang
- 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, 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.
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3
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Borah A, Dey S, Siddiqui K, Gupta SK, Rajaraman G, Murugavel R. Magnetic anisotropy in octahedral Dy(III) and Yb(III) complexes. Dalton Trans 2024; 53:7263-7267. [PMID: 38618749 DOI: 10.1039/d3dt04352e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
New organophosphate complexes [Ln(dippH)3(dippH2)3]·(H2O)6, (Ln = Dy, Yb and Y; dippH2 = 2,6-diisopropylphenyl phosphate), displaying octahedral coordination geometry around the metal ion, exhibit unusual slow relaxation of magnetisation, which is investigated through experimental studies and ab initio CASSCF calculations.
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Affiliation(s)
- Aditya Borah
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra, 400076, India.
- Department of Chemistry, Jengraimukh College, Majuli, Assam, 785105, India
| | - Sourav Dey
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra, 400076, India.
| | - Kehkasha Siddiqui
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra, 400076, India.
| | - Sandeep K Gupta
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, Delhi, 110016, India
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra, 400076, India.
| | - Ramaswamy Murugavel
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra, 400076, India.
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4
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Gavrikov AV, Ilyukhin AB, Taydakov IV, Metlin MT, Datskevich NP, Buzoverov ME, Babeshkin KA, Efimov NN. Novel stable ytterbium acetylacetonate-quinaldinate complexes as single-molecule magnets and surprisingly efficient luminophores. Dalton Trans 2023; 52:17911-17927. [PMID: 37982138 DOI: 10.1039/d3dt03253a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2023]
Abstract
The first Yb complexes comprising a quinoline-2-carboxylate (quinaldinate, Q-) ligand, namely 1D-polymeric [Yb(acac)2(Q)]n (1, acac- is the acetylacetonate (pentane-2,4-dionate) anion) and mononuclear [Yb(acac)2(Q)(Phen)] (2, Phen is 1,10-phenanthroline), are reported. The bifunctionality of both complexes as field-induced single-molecule magnets (SMMs) and near IR luminophores has been revealed. The SMM properties of 1 and 2 have been discussed in terms of the geometry and composition of the coordination environment. Also, 1 is the first example of 1D-polymeric SMMs with the capped octahedral surrounding of Yb3+. The photoluminescence quantum yields (PLQYs) of 1 and 2 are 2 and 4%, respectively. The origins of this difference are discussed. Surprisingly, the PLQY value of 2 is high for compounds comprising a lot of C-H vibrational quenchers, being the highest one for reliably characterized Yb β-diketonate complexes, and surpassing those for complexes with a broad range of anionic ligands. In this respect, the role of the Phen ligand is to tune the coordination mode of Q- thereby decreasing the energy of coordinating C-O oscillators rather than to act as a typical antenna ligand. These results can give rise to an alternative route to elaborate efficient Yb-based luminophores via the substitution of the β-diketonate ligands controlled by the introduction of appropriate neutral ligands.
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Affiliation(s)
- Andrey V Gavrikov
- N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky prosp. 31, 119991 Moscow, Russian Federation.
| | - Andrey B Ilyukhin
- N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky prosp. 31, 119991 Moscow, Russian Federation.
| | - Ilya V Taydakov
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, 53 Leninsky Prospect, 119991, Moscow, Russian Federation
| | - Mikhail T Metlin
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, 53 Leninsky Prospect, 119991, Moscow, Russian Federation
- N.E. Bauman Moscow State Technical University, 2-ya Baumanskaya str. 5/1, 105005, Moscow, Russia
| | - Nikolay P Datskevich
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, 53 Leninsky Prospect, 119991, Moscow, Russian Federation
| | - Mikhail E Buzoverov
- N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky prosp. 31, 119991 Moscow, Russian Federation.
| | - Konstantin A Babeshkin
- N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky prosp. 31, 119991 Moscow, Russian Federation.
| | - Nikolay N Efimov
- N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky prosp. 31, 119991 Moscow, Russian Federation.
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5
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Borah A, Dey S, Gupta SK, Rajaraman G, Murugavel R. Field-induced SIM behaviour in early lanthanide(III) organophosphates containing 18-crown-6. Dalton Trans 2023. [PMID: 37317701 DOI: 10.1039/d3dt01206a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Single-ion magnets (SIMs) have attracted wide attention in recent years. Despite tremendous progress in late lanthanide SIMs, reports on early lanthanides exhibiting SIM characteristics are scarce. A series of five novel 18-crown-6 encapsulated mononuclear early lanthanide(III) organophosphates, [{(18-crown-6)Ln(dippH)3}{(18-crown-6)Ln(dippH)2(dippH2)}]·[I3] [Ln = Ce (1), Pr (2), Nd (3)] and [{Ln(18-crown-6)(dippH)2(H2O)}·{I3}] [Ln = Sm (4) and Eu (5)], have been synthesised in the present study. 18-crown-6 coordinates to Ln(III) ions in an equatorial position while the axial positions are occupied by either three phosphate moieties as in 1-3 or two phosphate moieties and one water molecule as in 4 and 5, resulting in a muffin-shaped coordination geometry around the Ln(III) centres. Magnetic susceptibility measurements reveal that Ce and Nd complexes are field-induced single-ion magnets with significant barrier heights. Furthermore, the ab initio CASSCF/RASSI-SO/SINGLE_ANISO calculations on complexes 1 and 3 reveal significant QTM in the ground state rationalising the field-induced single-ion magnetism behaviour of these complexes.
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Affiliation(s)
- Aditya Borah
- Department of Chemistry, Indian Institute of Technology, Powai, Mumbai, India.
| | - Sourav Dey
- Department of Chemistry, Indian Institute of Technology, Powai, Mumbai, India.
| | - Sandeep K Gupta
- Department of Chemistry, Indian Institute of Technology, Powai, Mumbai, India.
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology, Powai, Mumbai, India.
| | - Ramaswamy Murugavel
- Department of Chemistry, Indian Institute of Technology, Powai, Mumbai, India.
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6
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Zhang B, Guo X, Tan P, Lv W, Bai X, Zhou Y, Yuan A, Chen L, Liu D, Cui HH, Wang R, Chen XT. Axial Ligand as a Critical Factor for High-Performance Pentagonal Bipyramidal Dy(III) Single-Ion Magnets. Inorg Chem 2022; 61:19726-19734. [PMID: 36417790 DOI: 10.1021/acs.inorgchem.2c02476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The choice of axial ligands is of great importance for the construction of high-performance Dy-based single-molecule magnets (SMMs). Here, combining axial ligands Ph3SiO- (anion of triphenylsilanol) and 2,6-dichloro-4-nitro-PhO- (the anion of 2,6-dichloro-4-nitrophenol) with a neutral macrocyclic ligand 2,14-dimethyl-3,6,10,13,19-pentaazabicyclo[13.3.1]nonadeca-1(19),2,13,15,17-pentaene (L2N5) generates two new pentagonal bipyramidal Dy(III) complexes [DyIII(L2N5) (X)2](BPh4) (X = Ph3SiO-, 1; 2,6-dichloro-4-nitro-PhO-, 2) with strong axial ligand fields. Magnetic characterizations show that 1 possesses a large energy barrier above 1000 K and a magnetic hysteresis up to 9 K, whereas 2 only displays field-induced peaks of alternating-current susceptibilities without the hysteresis loop, even though 2 has a similar coordination geometry with 1. Detailed Ab initio calculations indicate an apparent difference in the axial negative charge between both complexes, which is caused by the diverse electron-donating properties of the axial ligands. The present work provides an efficient strategy to enhance the SMMs' properties, which highlights that the electron-donating property of the axial ligands is especially important for constructing the high-performance Dy-based SMMs.
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Affiliation(s)
- Ben Zhang
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, P. R. China
| | - Xuefeng Guo
- Institute of Flexible Electronics, Northwestern Polytechnical University, Xi'an 710072, P. R. China
| | - Pengfei Tan
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, P. R. China
| | - Wei Lv
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China
| | - Xiaoye Bai
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, P. R. China
| | - Yang Zhou
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, P. R. China
| | - Aihua Yuan
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, P. R. China
| | - Lei Chen
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, P. R. China
| | - Dan Liu
- Institute of Flexible Electronics, Northwestern Polytechnical University, Xi'an 710072, P. R. China
| | - Hui-Hui Cui
- School of Chemistry and Chemical Engineering, Nantong University, Jiangsu 226019, P. R. China
| | - Ruosong Wang
- Queen Mary University of London Engineering School, Northwestern Polytechnical University, Xi'an 710072, P. R. China
| | - Xue-Tai Chen
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China
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7
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Singh V, Das D, Anga S, Sutter JP, Chandrasekhar V, Bar AK. Rigid N 3O 2-Pentadentate Ligand-Assisted Octacoordinate Mononuclear Ln(III) Complexes: Syntheses, Characterization, and Slow Magnetization Relaxation. ACS OMEGA 2022; 7:25881-25890. [PMID: 35910178 PMCID: PMC9330846 DOI: 10.1021/acsomega.2c03631] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A series of air-stable mononuclear octacoordinate Ln(III) complexes, [(L)Ln(TPPO)3]OTf (Ln = Y (1·Y); Gd (1·Gd); Tb (1·Tb); Dy (1·Dy); Ho (1·Ho); and Er (1·Er)) and [(L)Ln(TPPO)(NO3)] (Ln = Y (2·Y) and Dy (2·Dy)), are synthesized employing a rigid N3O2-pentadentate chelating ligand as the basis ligand and meridional ancillary ligands (where H2L = 2,6-diacetylpyridine bis-benzoylhydrazone, TPPO = triphenylphosphine oxide, and OTf- = trifluoromethanesulfonate). All the complexes are synthesized under aerobic conditions and characterized comprehensively by spectroscopic and X-ray crystallographic techniques. Magnetic property investigation on the polycrystalline solid samples of 1·Ln (Ln = Gd, Tb, Dy, Ho, and Er) and 2·Dy are reported. A field-induced single-molecule magnet behavior was observed for the Dy derivatives. 1·Dy exhibits the highest effective energy barrier of magnetization reversal, U eff/k B = 47 K under H dc = 1 kOe among the complexes presented herein.
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Affiliation(s)
- Vaibhav Singh
- Indian
Institute of Science Education and Research Tirupati, Tirupati 517507 AP, India
| | - Dhiraj Das
- Indian
Institute of Science Education and Research Tirupati, Tirupati 517507 AP, India
| | - Srinivas Anga
- Tata
Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad 500107, India
| | - Jean-Pascal Sutter
- Laboratoire
de Chimie de Coordination Du CNRS (LCC-CNRS), Université de Toulouse, CNRS, Toulouse 31062, France
| | | | - Arun Kumar Bar
- Indian
Institute of Science Education and Research Tirupati, Tirupati 517507 AP, India
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8
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Liu M, Yang Y, Jing R, Zheng S, Yuan A, Wang Z, Luo SC, Liu X, Cui HH, Ouyang ZW, Chen L. Slow magnetic relaxation in dinuclear Co(III)-Co(II) complexes containing a five-coordinated Co(II) centre with easy-axis anisotropy. Dalton Trans 2022; 51:8382-8389. [PMID: 35587605 DOI: 10.1039/d2dt00857b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Two air-stable Co(III)-Co(II) mixed-valence complexes of molecular formulas [CoIICoIII(L)(DMAP)3(CH3COO)]·H2O·CH3OH (1) and [CoIICoIII(L)(4-Pyrrol)3 (CH3COO)]·0.5CH2Cl2 (2) (H4L = 1,3-bis-(5-methyl pyrazole-3-carboxamide) propane; DMAP = 4-dimethylaminopyridine; and 4-Pyrrol = 4-pyrrolidinopyridine) were synthesized and characterized by single-crystal X-ray crystallography, high-field electron paramagnetic resonance (HFEPR) spectroscopy, and magnetic measurements. Both complexes possess one five-coordinated paramagnetic Co(II) ion and one six-coordinated Co(III) ion with octahedral geometry. Direct-current magnetic susceptibility and magnetization measurements show the easy-axis magnetic anisotropy that is also confirmed by low-temperature HFEPR measurements and theoretical calculations. Frequency- and temperature-dependent alternating-current magnetic susceptibility measurements reveal their field-assisted slow magnetic relaxation, which is a characteristic behavior of single-molecule magnets (SMMs), caused by the individual Co(II) ion. The effective energy barrier of complex 1 (49.2 cm-1) is significantly higher than those of the other dinuclear Co(III)-Co(II) SMMs. This work hence presents the first instance of the dinuclear Co(III)-Co(II) single-molecule magnets with a five-coordinated environment around the Co(II) ion.
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Affiliation(s)
- Mengyao Liu
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, P. R. China.
| | - Yimou Yang
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, P. R. China.
| | - Rong Jing
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, P. R. China.
| | - Shaojun Zheng
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, P. R. China.
| | - Aihua Yuan
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, P. R. China.
| | - Zhenxing Wang
- Wuhan National High Magnetic Field Center & School of Physics, Huazhong University of Science and Technology, Wuhan 430074, P. R. China.
| | - Shu-Chang Luo
- School of Chemical Engineering, Guizhou University of Engineering Science, Bijie 551700, P. R. China.
| | - Xiangyu Liu
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, P. R. China.
| | - Hui-Hui Cui
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, P. R. China
| | - Zhong-Wen Ouyang
- Wuhan National High Magnetic Field Center & School of Physics, Huazhong University of Science and Technology, Wuhan 430074, P. R. China.
| | - Lei Chen
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, P. R. China.
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9
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Cai X, Cheng Z, Wu Y, Jing R, Tian SQ, Chen L, Li ZY, Zhang YQ, Cui HH, Yuan A. Tuning the Equatorial Negative Charge in Hexagonal Bipyramidal Dysprosium(III) Single-Ion Magnets to Improve the Magnetic Behavior. Inorg Chem 2022; 61:3664-3673. [PMID: 35171611 DOI: 10.1021/acs.inorgchem.1c03775] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Taking advantage of the pentaethylene glycol (EO5) and deprotonation of EO5, a family of new structurally hexagonal bipyramidal Dy(III) complexes, [Dy(EO5)(2,6-dichloro-4-nitro-PhO)2](2,6-dichloro-4-nitro-PhO) (1), [Dy(EO5-BPh2)(2,6-dichloro-4-nitro-PhO)2] (2), and [Dy(EO5-BPh2)(2,6-dichloro-4-nitro-PhO)Cl] (3), were controbllably synthesized and structurally characterized. Magnetic measurements show that complex 1 is a zero-field SIM and has an observable hysteresis opening up to 4 K. Conversely, only under extra magnetic field is slow magnetic relaxation observed in 2 and 3. This considerable difference in the magnetic behavior is mainly caused by the change of the equatorial negative charge. Detailed ab initio calculations further elucidate that the quantum tunneling is induced by the presence of equatorial negative charge, and the magnetic anisotropy depends on the axial ligands. This work demonstrates that the absence of the equatorial negative charge should also be considered in the rational design of promising single molecular magnets based on the oblate ions.
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Affiliation(s)
- Xingwei Cai
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, P. R. China
| | - Zhijie Cheng
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, P. R. China
| | - Yingying Wu
- School of Materials Science and Engineering, Nankai University, 38 Tongyan Road, Haihe Educational Park, Tianjin 300350, P. R. China
| | - Rong Jing
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, P. R. China
| | - Shuang-Qin Tian
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, P. R. China
| | - Lei Chen
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, P. R. China
| | - Zhao-Yang Li
- School of Materials Science and Engineering, Nankai University, 38 Tongyan Road, Haihe Educational Park, Tianjin 300350, 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
| | - Hui-Hui Cui
- School of Chemistry and Chemical Engineering, Nantong University, Jiangsu 226019, P. R. China
| | - Aihua Yuan
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, P. R. China
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10
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Borah A, Murugavel R. Magnetic relaxation in single-ion magnets formed by less-studied lanthanide ions Ce(III), Nd(III), Gd(III), Ho(III), Tm(II/III) and Yb(III). Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214288] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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11
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Tan P, Yang Y, Lv W, Jing R, Cui H, Zheng SJ, Chen L, Yuan A, Chen XT, Zhao Y. A cyanometallate- and carbonate-bridged dysprosium chain complex with a pentadentate macrocyclic ligand: synthesis, structure, and magnetism. NEW J CHEM 2022. [DOI: 10.1039/d2nj00784c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A novel one-dimensional polymeric cyanometallate- and carbonate-bridged dysprosium(iii) chain with a pentadentate macrocyclic ligand exhibits field-induced multiple-relaxation processes.
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Affiliation(s)
- Pengfei Tan
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, P. R. China
| | - Yimou Yang
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, P. R. China
| | - Wei Lv
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China
| | - Rong Jing
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, P. R. China
| | - Huihui Cui
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, P. R. China
| | - Shao-Jun Zheng
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, P. R. China
| | - Lei Chen
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, P. R. China
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China
| | - Aihua Yuan
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, P. R. China
| | - Xue-Tai Chen
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China
| | - Yuyuan Zhao
- School of Medical Technology, Zhenjiang College, Zhenjiang 212003, P. R. China
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12
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Zhang B, Cheng Z, Wu Y, Chen L, Jing R, Cai X, Jiang C, Zhang YQ, Yuan A, Cui HH, Li ZY. Pseudo-mono-axial ligand fields that support high energy barriers in triangular dodecahedral Dy( iii) single-ion magnets. Chem Sci 2022; 13:13231-13240. [DOI: 10.1039/d2sc03182e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 10/30/2022] [Indexed: 11/05/2022] Open
Abstract
Air-stable triangular dodecahedral Dy(iii) single-ion magnets with pseudo-mono-axial linear ligand fields exhibit high energy barrier exceeding 600 K, which represent the highest energy barrier for mononuclear SMMs with triangular dodecahedron.
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Affiliation(s)
- Ben Zhang
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, PR China
| | - Zhijie Cheng
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, PR China
| | - Yingying Wu
- School of Materials Science and Engineering, Nankai University, 38 Tongyan Road, Haihe Educational Park, Tianjin 300350, PR China
| | - Lei Chen
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, PR China
| | - Rong Jing
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, PR China
| | - Xingwei Cai
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, PR China
| | - Chunhui Jiang
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, PR China
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, PR China
| | - Aihua Yuan
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, PR China
| | - Hui-Hui Cui
- School of Chemistry and Chemical Engineering, Nantong University, Jiangsu 226019, PR China
| | - Zhao-Yang Li
- School of Materials Science and Engineering, Nankai University, 38 Tongyan Road, Haihe Educational Park, Tianjin 300350, PR China
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13
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Zhang C, Cheng Z, Tan P, Lv W, Cui H, Chen L, Cai X, Zhao Y, Yuan A. Tuning the ligand field in seven-coordinate Dy( iii) complexes to perturb single-ion magnet behavior. NEW J CHEM 2021. [DOI: 10.1039/d1nj00734c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two mononuclear seven-coordinate Dy(iii) complexes with different strengths of ligand fields exhibit different slow magnetic relaxations.
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Affiliation(s)
- Chunyang Zhang
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- P. R. China
| | - Zhijie Cheng
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- P. R. China
| | - Pengfei Tan
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- P. R. China
| | - Wei Lv
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
- P. R. China
| | - Huihui Cui
- School of Chemistry and Chemical Engineering
- Nantong University
- Nantong 226019
- P. R. China
| | - Lei Chen
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- P. R. China
| | - Xingwei Cai
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- P. R. China
| | - Yuyuan Zhao
- School of Medical Technology
- Zhenjiang College
- Zhenjiang 212003
- P. R. China
| | - Aihua Yuan
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- P. R. China
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14
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Zhang C, Liu M, Cai X, Chen L, Liu YZ, Cui H, Zhang SL, Yuan A. Observation of field-induced single-ion magnet behavior in an octahedral dysprosium complex with a strong ligand field. NEW J CHEM 2021. [DOI: 10.1039/d0nj05398h] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A mononuclear six-coordinate DyIII complex exhibiting slow magnetic relaxation provides a rare case for octahedral lanthanide complexes with SMM behavior.
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Affiliation(s)
- Chunyang Zhang
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- P. R. China
| | - Mengyao Liu
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- P. R. China
| | - Xingwei Cai
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- P. R. China
| | - Lei Chen
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- P. R. China
| | - Yuan-Zhong Liu
- Suzhou Institute of Biomedical Engineering and Technology
- Chinese Academy of Sciences
- Suzhou 215163
- P. R. China
- Jinan Guoke Medical Technology Development Co., Ltd
| | - Huihui Cui
- School of Chemistry and Chemical Engineering
- Nantong University
- Jiangsu 226019
- P. R. China
| | - Shao-Liang Zhang
- Institution of Functional Organic Molecules and Materials
- School of Chemistry and Chemical Engineering, Liaocheng University
- Liaocheng 252059
- P. R. China
| | - Aihua Yuan
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- P. R. China
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15
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Shi T, Xu Y, Li MX, Liu CM, Nfor EN, Wang ZX. A 10-coordinate cerium(III) complex with a ferrocene-based terpyridine ligand exhibiting field-induced slow magnetic relaxation. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114695] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Canaj AB, Dey S, Wilson C, Céspedes O, Rajaraman G, Murrie M. Engineering macrocyclic high performance pentagonal bipyramidal Dy(iii) single-ion magnets. Chem Commun (Camb) 2020; 56:12037-12040. [DOI: 10.1039/d0cc04559d] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
We highlight the vast synthetic scope for macrocyclic engineering of magnetic anisotropy, generating a high performance pentagonal bipyramidal Dy(iii) single-ion magnet where the weak equatorial ligand field is created entirely by using a macrocycle.
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Affiliation(s)
- Angelos B. Canaj
- School of Chemistry
- University of Glasgow
- University Avenue
- Glasgow
- UK
| | - Sourav Dey
- Department of Chemistry
- Indian Institute of Technology Bombay
- Powai
- Mumbai
- India
| | - Claire Wilson
- School of Chemistry
- University of Glasgow
- University Avenue
- Glasgow
- UK
| | - Oscar Céspedes
- School of Physics and Astronomy
- University of Leeds
- Leeds LS2 9JT
- UK
| | - Gopalan Rajaraman
- Department of Chemistry
- Indian Institute of Technology Bombay
- Powai
- Mumbai
- India
| | - Mark Murrie
- School of Chemistry
- University of Glasgow
- University Avenue
- Glasgow
- UK
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17
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Zhang SL, Li SS, Zeng SY, Shi Y, Wang DQ, Chen L. Slow magnetic relaxation in O–Se–O bridged manganese(iii) Schiff base complexes. NEW J CHEM 2020. [DOI: 10.1039/c9nj05837k] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Two new chain complexes consisting of a Mn(salen) building block bridged by O–Se–O units, [Mn2(salen)2(L)](ClO4) (1) and {[Mn(salen)]2(L)2}·Y (2) (salen = N,N′-bis(salicylidene)-ethylenediamine, L = 3,4,5-trifluorobenzeneseleninic acid, Y = salicylaldehyde) have been synthesized and characterized structurally and magnetically.
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Affiliation(s)
- Shao-Liang Zhang
- Institution of Functional Organic Molecules and Materials
- School of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng
- China
| | - Shan-Shan Li
- School of Environment and Planning
- Liaocheng University
- Liaocheng
- China
| | - Su-Yuan Zeng
- Institution of Functional Organic Molecules and Materials
- School of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng
- China
| | - Yang Shi
- Institution of Functional Organic Molecules and Materials
- School of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng
- China
| | - Da-Qi Wang
- Institution of Functional Organic Molecules and Materials
- School of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng
- China
| | - Lei Chen
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang
- China
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18
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Yi G, Cui H, Zhang C, Zhao W, Chen L, Zhang YQ, Chen XT, Song Y, Yuan A. A capped trigonal prismatic cobalt(ii) complex as a structural archetype for single-ion magnets. Dalton Trans 2020; 49:2063-2067. [DOI: 10.1039/c9dt04881b] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Mononuclear, seven-coordinate complex [CoII(BPA-TPA)](BF4)2 (BPA-TPA = pentapyidyldiamine) display field-induce slow magnetic relaxation, thereby presenting the first report of SIMs based on 3d metal ions with a capped trigonal prismatic geometry.
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Affiliation(s)
- Gangji Yi
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- P. R. China
| | - Huihui Cui
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
- P. R. China
| | - Chunyang Zhang
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- P. R. China
| | - Wen Zhao
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- P. R. China
| | - Lei Chen
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- P. R. China
| | - Yi-Quan Zhang
- Jiangsu Key Lab for NSLSCS
- School of Physical Science and Technology
- Nanjing Normal University
- Nanjing 210023
- P. R. China
| | - Xue-Tai Chen
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
- P. R. China
| | - You Song
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
- P. R. China
| | - Aihua Yuan
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- P. R. China
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19
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Fondo M, Corredoira-Vázquez J, García-Deibe AM, Sanmartín-Matalobos J, Amoza M, Botas AMP, Ferreira RAS, Carlos LD, Colacio E. Field-induced slow magnetic relaxation and luminescence thermometry in a mononuclear ytterbium complex. Inorg Chem Front 2020. [DOI: 10.1039/d0qi00637h] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A mononuclear pentagonal bipyramidal YbIII complex functions as a field-induced SIM luminescent thermometer.
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Affiliation(s)
- Matilde Fondo
- Departamento de Química Inorgánica
- Facultade de Química
- Universidade de Santiago de Compostela
- Spain
| | - Julio Corredoira-Vázquez
- Departamento de Química Inorgánica
- Facultade de Química
- Universidade de Santiago de Compostela
- Spain
| | - Ana M. García-Deibe
- Departamento de Química Inorgánica
- Facultade de Química
- Universidade de Santiago de Compostela
- Spain
| | | | - Martín Amoza
- Departamento de Química Inorgánica
- Facultade de Química
- Universidade de Santiago de Compostela
- Spain
| | - Alexandre M. P. Botas
- Phantom-g
- CICECO – Aveiro Institute of Materials
- Department of Physics
- University of Aveiro
- 3810-193 – Aveiro
| | - Rute A. S. Ferreira
- Phantom-g
- CICECO – Aveiro Institute of Materials
- Department of Physics
- University of Aveiro
- 3810-193 – Aveiro
| | - Luís D. Carlos
- Phantom-g
- CICECO – Aveiro Institute of Materials
- Department of Physics
- University of Aveiro
- 3810-193 – Aveiro
| | - Enrique Colacio
- Departamento de Química Inorgánica
- Facultad de Ciencias
- Universidad de Granada
- 18071 Granada
- Spain
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20
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Yi G, Zhang C, Zhao W, Cui H, Chen L, Wang Z, Chen XT, Yuan A, Liu YZ, Ouyang ZW. Structure, magnetic anisotropy and relaxation behavior of seven-coordinate Co(ii) single-ion magnets perturbed by counter-anions. Dalton Trans 2020; 49:7620-7627. [DOI: 10.1039/d0dt01232g] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A series of mononuclear seven-coordinate complexes with the same coordination unit [Co(BPA-TPA)]2+ (BPA-TPA = pentapyidyldiamine) display the different slow magnetic relaxation processes perturbed by the variation of the counter anions.
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Affiliation(s)
- Gangji Yi
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- P. R. China
| | - Chunyang Zhang
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- P. R. China
| | - Wen Zhao
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- P. R. China
| | - Huihui Cui
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
- P. R. China
| | - Lei Chen
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- P. R. China
| | - Zhenxing Wang
- Wuhan National High Magnetic Field Center& School of Physics
- Huazhong University of Science and Technology
- Wuhan 430074
- P. R. China
| | - Xue-Tai Chen
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
- P. R. China
| | - Aihua Yuan
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- P. R. China
| | - Yuan-Zhong Liu
- Suzhou Institute of Biomedical Engineering and Technology
- Chinese Academy of Sciences
- Suzhou 215163
- P. R. China
- Jinan Guoke Medical Technology Development Co
| | - Zhong-Wen Ouyang
- Wuhan National High Magnetic Field Center& School of Physics
- Huazhong University of Science and Technology
- Wuhan 430074
- P. R. China
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21
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Cen P, Wang M, Ma X, Chen L, Zhang YQ, Li Y, Tian D, Liu X. Coordination microenvironment perturbed single-ion magnet behavior in a β-diketone Dy( iii) complex. CrystEngComm 2020. [DOI: 10.1039/d0ce00935k] [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
Employing mixed β-diketonate and bpy ligands leads to a mononuclear Dy(iii) SIM, of which the magneto-structural correlation is elucidated by the magnetic and theoretical studies, as well as a comparative study of reported analogues.
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Affiliation(s)
- Peipei Cen
- College of Public Health and Management
- Ningxia Medical University
- Yinchuan 750021
- China
| | - Meilin Wang
- College of Public Health and Management
- Ningxia Medical University
- Yinchuan 750021
- China
| | - Xiufang Ma
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering
- National Demonstration Center for Experimental Chemistry Education
- College of Chemistry and Chemical Engineering
- Ningxia University
- Yinchuan 750021
| | - Lei Chen
- School of Material Science and Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- China
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS
- School of Physical Science and Technology
- Nanjing Normal University
- Nanjing 210023
- China
| | - Yonghong Li
- College of Public Health and Management
- Ningxia Medical University
- Yinchuan 750021
- China
| | - Danian Tian
- College of Public Health and Management
- Ningxia Medical University
- Yinchuan 750021
- China
| | - Xiangyu Liu
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering
- National Demonstration Center for Experimental Chemistry Education
- College of Chemistry and Chemical Engineering
- Ningxia University
- Yinchuan 750021
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22
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Li Z, Zhai Y, Chen W, Ding Y, Zheng Y. Air‐Stable Hexagonal Bipyramidal Dysprosium(III) Single‐Ion Magnets with Nearly Perfect
D
6
h
Local Symmetry. Chemistry 2019; 25:16219-16224. [DOI: 10.1002/chem.201904325] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 10/17/2019] [Indexed: 11/10/2022]
Affiliation(s)
- Zi‐Han Li
- Frontier Institute of Science and Technology (FIST)Shenzhen Research SchoolState Key Laboratory for, Mechanical Behaviour of MaterialsMOE Key Laboratory for, Nonequilibrium Synthesis of Condensed MatterXi'an Key Laboratory of, Sustainable Energy and Materials Chemistry and School of ScienceXi'an Jiaotong University 99 Yanxiang Road Xi'an Shaanxi 710054 P. R. China
| | - Yuan‐Qi Zhai
- Frontier Institute of Science and Technology (FIST)Shenzhen Research SchoolState Key Laboratory for, Mechanical Behaviour of MaterialsMOE Key Laboratory for, Nonequilibrium Synthesis of Condensed MatterXi'an Key Laboratory of, Sustainable Energy and Materials Chemistry and School of ScienceXi'an Jiaotong University 99 Yanxiang Road Xi'an Shaanxi 710054 P. R. China
| | - Wei‐Peng Chen
- Frontier Institute of Science and Technology (FIST)Shenzhen Research SchoolState Key Laboratory for, Mechanical Behaviour of MaterialsMOE Key Laboratory for, Nonequilibrium Synthesis of Condensed MatterXi'an Key Laboratory of, Sustainable Energy and Materials Chemistry and School of ScienceXi'an Jiaotong University 99 Yanxiang Road Xi'an Shaanxi 710054 P. R. China
| | - You‐Song Ding
- Frontier Institute of Science and Technology (FIST)Shenzhen Research SchoolState Key Laboratory for, Mechanical Behaviour of MaterialsMOE Key Laboratory for, Nonequilibrium Synthesis of Condensed MatterXi'an Key Laboratory of, Sustainable Energy and Materials Chemistry and School of ScienceXi'an Jiaotong University 99 Yanxiang Road Xi'an Shaanxi 710054 P. R. China
| | - Yan‐Zhen Zheng
- Frontier Institute of Science and Technology (FIST)Shenzhen Research SchoolState Key Laboratory for, Mechanical Behaviour of MaterialsMOE Key Laboratory for, Nonequilibrium Synthesis of Condensed MatterXi'an Key Laboratory of, Sustainable Energy and Materials Chemistry and School of ScienceXi'an Jiaotong University 99 Yanxiang Road Xi'an Shaanxi 710054 P. R. China
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23
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Canaj AB, Dey S, Martí ER, Wilson C, Rajaraman G, Murrie M. Insight into D 6h Symmetry: Targeting Strong Axiality in Stable Dysprosium(III) Hexagonal Bipyramidal Single-Ion Magnets. Angew Chem Int Ed Engl 2019; 58:14146-14151. [PMID: 31343095 PMCID: PMC6790654 DOI: 10.1002/anie.201907686] [Citation(s) in RCA: 129] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Indexed: 11/24/2022]
Abstract
Following a novel synthetic strategy where the strong uniaxial ligand field generated by the Ph3 SiO- (Ph3 SiO- =anion of triphenylsilanol) and the 2,4-di-t Bu-PhO- (2,4-di-t Bu-PhO- =anion of 2,4-di-tertbutylphenol) ligands combined with the weak equatorial field of the ligand LN6 , leads to [DyIII (LN6 )(2,4-di-t Bu-PhO)2 ](PF6 ) (1), [DyIII (LN6 )(Ph3 SiO)2 ](PF6 ) (2) and [DyIII (LN6 )(Ph3 SiO)2 ](BPh4 ) (3) hexagonal bipyramidal dysprosium(III) single-molecule magnets (SMMs) with high anisotropy barriers of Ueff =973 K for 1, Ueff =1080 K for 2 and Ueff =1124 K for 3 under zero applied dc field. Ab initio calculations predict that the dominant magnetization reversal barrier of these complexes expands up to the 3rd Kramers doublet, thus revealing for the first time the exceptional uniaxial magnetic anisotropy that even the six equatorial donor atoms fail to negate, opening up the possibility to other higher-order symmetry SMMs.
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Affiliation(s)
- Angelos B. Canaj
- WestCHEMSchool of ChemistryUniversity of GlasgowUniversity AvenueGlasgowG12 8QQUK
| | - Sourav Dey
- Department of ChemistryIndian Institute of Technology Bombay, PowaiMumbaiMaharashtra400076India
| | - Emma Regincós Martí
- WestCHEMSchool of ChemistryUniversity of GlasgowUniversity AvenueGlasgowG12 8QQUK
| | - Claire Wilson
- WestCHEMSchool of ChemistryUniversity of GlasgowUniversity AvenueGlasgowG12 8QQUK
| | - Gopalan Rajaraman
- Department of ChemistryIndian Institute of Technology Bombay, PowaiMumbaiMaharashtra400076India
| | - Mark Murrie
- WestCHEMSchool of ChemistryUniversity of GlasgowUniversity AvenueGlasgowG12 8QQUK
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24
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Canaj AB, Dey S, Martí ER, Wilson C, Rajaraman G, Murrie M. Insight into
D
6
h
Symmetry: Targeting Strong Axiality in Stable Dysprosium(III) Hexagonal Bipyramidal Single‐Ion Magnets. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201907686] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Angelos B. Canaj
- WestCHEM School of Chemistry University of Glasgow University Avenue Glasgow G12 8QQ UK
| | - Sourav Dey
- Department of Chemistry Indian Institute of Technology Bombay, Powai Mumbai Maharashtra 400076 India
| | - Emma Regincós Martí
- WestCHEM School of Chemistry University of Glasgow University Avenue Glasgow G12 8QQ UK
| | - Claire Wilson
- WestCHEM School of Chemistry University of Glasgow University Avenue Glasgow G12 8QQ UK
| | - Gopalan Rajaraman
- Department of Chemistry Indian Institute of Technology Bombay, Powai Mumbai Maharashtra 400076 India
| | - Mark Murrie
- WestCHEM School of Chemistry University of Glasgow University Avenue Glasgow G12 8QQ UK
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25
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Guégan F, Jung J, Le Guennic B, Riobé F, Maury O, Gillon B, Jacquot JF, Guyot Y, Morell C, Luneau D. Evidencing under-barrier phenomena in a Yb(iii) SMM: a joint luminescence/neutron diffraction/SQUID study. Inorg Chem Front 2019. [DOI: 10.1039/c9qi00726a] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The synthesis, spectroscopic and magnetic characterisation and ab initio investigation of a new Yb based complex, [YbTp2NO3], are reported and exploited to rationalise its field-induced SMM behaviour.
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Affiliation(s)
- Frédéric Guégan
- Université de Lyon
- Laboratoire des Multimatériaux et Interfaces (UMR 5615 CNRS
- Université Lyon 1)
- 69622 Villeurbanne
- France
| | - Julie Jung
- 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
| | | | - Olivier Maury
- Université de Lyon
- Ens de Lyon
- CNRS UMR 5182
- Lyon
- France
| | - Béatrice Gillon
- CEA Saclay
- Laboratoire Léon Brillouin (UMR 12 CNRS
- CEA)
- 91191 Gif-sur-Yvette
- France
| | | | - Yannick Guyot
- Université Claude Bernard Lyon 1
- Institut Lumière Matière (UMR 5306 CNRS - Université Lyon 1)
- 69622 Villeurbanne
- France
| | - Christophe Morell
- Université de Lyon
- Institut des Sciences Analytiques
- UMR 5280
- CNRS
- F-69100 Villeurbanne
| | - Dominique Luneau
- Université de Lyon
- Laboratoire des Multimatériaux et Interfaces (UMR 5615 CNRS
- Université Lyon 1)
- 69622 Villeurbanne
- France
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