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Gupta A, Kapurwan S, Prasad Bera S, Jyoti Mondal D, Shome S, Konar S. Heterometallic Hexanuclear [Cu 2 Ln 4 ] Complexes Showing Zero-field SMM Behaviour and Magnetocaloric Effect. Chem Asian J 2022; 17:e202200622. [PMID: 35726858 DOI: 10.1002/asia.202200622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Indexed: 11/10/2022]
Abstract
Three heterometallic hexanuclear 3d-4f complexes bearing the formula [Cu2 (L)2 Ln4 (L)4 (o-van)2 ] [L=2-((E)-((2-hydroxyphenyl)imino]methyl)phenol; o-van=ortho-vanillin] (LnIII =GdIII (1), DyIII (2), and TbIII (3)) have been synthesized and characterized. DC magnetic susceptibility measurements reveal overall antiferromagnetic interactions in 1 and 3, whereas co-existence of ferro- as well as antiferromagnetic interactions were observed in 2. The magnetocaloric effect has been observed for 1 with an entropy change (-ΔSm ) of 22.3 J kg-1 K-1 at 3 K and 7 T. Zero-field single molecule magnet (SMM) behaviour has been observed for 2, where Raman relaxation and quantum tunneling of magnetization (QTM) played a role in magnetization relaxation. The Cu-O-Ln angle well explains the magnetic exchange coupling occurring in the complexes. BS-DFT calculation for the complexes provides an estimate of the exchange interactions between the paramagnetic centres. Ab initio calculations performed for complex 2 established a good correlation to the experimental relaxation dynamics.
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Affiliation(s)
- Arindam Gupta
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal Bhopal By-pass road, Bhauri, Madhya Pradesh, 462066, India
| | - Sandhya Kapurwan
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal Bhopal By-pass road, Bhauri, Madhya Pradesh, 462066, India
| | - Siba Prasad Bera
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal Bhopal By-pass road, Bhauri, Madhya Pradesh, 462066, India
| | - Dibya Jyoti Mondal
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal Bhopal By-pass road, Bhauri, Madhya Pradesh, 462066, India
| | - Shraoshee Shome
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal Bhopal By-pass road, Bhauri, Madhya Pradesh, 462066, India
| | - Sanjit Konar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal Bhopal By-pass road, Bhauri, Madhya Pradesh, 462066, India
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2
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Peng G, Yang Q, Chen Y, Dong XT, Zhang Z, Ren X. Single molecule magnet behavior and luminescence of {Ln4} and {LnZn} complexes. Dalton Trans 2022; 51:12484-12493. [DOI: 10.1039/d2dt01365g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A serials of tetranuclear coordination clusters [Ln4L2(HL)2(μ3-OH)2(NO3)2](NO3)2 [Ln = Dy (1•3CH3CN•5H2O), Gd (2•4CH3CN•5H2O), H2L = 6,6'-dimethoxy-2,2'-[2,2-dimethylpropane-1,3-diylbis-(nitrilomethylidyne)] diphenol] and dinuclear complexes [LnZnL(NO3)3(H2O)]•2CH3CN [Ln = Dy (3), Er (4), Yb (5), Lu...
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3
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Douib H, Flores Gonzalez J, Speed S, Montigaud V, Lefeuvre B, Dorcet V, Riobé F, Maury O, Gouasmia A, Le Guennic B, Cador O, Pointillart F. Modulation of the magnetic and photophysical properties in 3d–4f and 4f–4f′ heterobimetallic complexes involving a tetrathiafulvalene-based ligand. Dalton Trans 2022; 51:16486-16496. [DOI: 10.1039/d2dt02375j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
3d4f and 4f4f′ heterobimetallic complexes were designed thank to metal selective coordination with a redox-active tetrathiafulvalene-based ligand. Both magnetic and photophysical properties were investigated.
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Affiliation(s)
- Haiet Douib
- Institut des Sciences Chimiques de Rennes UMR 6226 CNRS-UR1, Université de Rennes 1, 35042 Rennes Cedex, France
- Laboratoire des Matériaux Organiques et Hétérochimie (LMOH), Département des sciences de la matière, Université Larbi Tébessi de Tébessa, Route de Constantine 12002, Tébessa, Algeria
| | - Jessica Flores Gonzalez
- Institut des Sciences Chimiques de Rennes UMR 6226 CNRS-UR1, Université de Rennes 1, 35042 Rennes Cedex, France
| | - Saskia Speed
- ENSL, CNRS, Laboratoire de Chimie UMR 5182, 46 allée d'Italie, 69364 Lyon, France
- Departament de Química Inorgànica i Orgànica, Secció de Química Inorgànica, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
| | - Vincent Montigaud
- Institut des Sciences Chimiques de Rennes UMR 6226 CNRS-UR1, Université de Rennes 1, 35042 Rennes Cedex, France
| | - Bertrand Lefeuvre
- Institut des Sciences Chimiques de Rennes UMR 6226 CNRS-UR1, Université de Rennes 1, 35042 Rennes Cedex, France
| | - Vincent Dorcet
- Institut des Sciences Chimiques de Rennes UMR 6226 CNRS-UR1, Université de Rennes 1, 35042 Rennes Cedex, France
| | - François Riobé
- ENSL, CNRS, Laboratoire de Chimie UMR 5182, 46 allée d'Italie, 69364 Lyon, France
| | - Olivier Maury
- ENSL, CNRS, Laboratoire de Chimie UMR 5182, 46 allée d'Italie, 69364 Lyon, France
| | - Abdelkrim Gouasmia
- Laboratoire des Matériaux Organiques et Hétérochimie (LMOH), Département des sciences de la matière, Université Larbi Tébessi de Tébessa, Route de Constantine 12002, Tébessa, Algeria
| | - Boris Le Guennic
- Institut des Sciences Chimiques de Rennes UMR 6226 CNRS-UR1, Université de Rennes 1, 35042 Rennes Cedex, France
| | - Olivier Cador
- Institut des Sciences Chimiques de Rennes UMR 6226 CNRS-UR1, Université de Rennes 1, 35042 Rennes Cedex, France
| | - Fabrice Pointillart
- Institut des Sciences Chimiques de Rennes UMR 6226 CNRS-UR1, Université de Rennes 1, 35042 Rennes Cedex, France
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4
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Razquin-Bobillo L, Pajuelo-Corral O, Zabala-Lekuona A, Rodríguez-Diéguez A, Cepeda J. An experimental and theoretical study of the magnetic relaxation in heterometallic coordination polymers based on 6-methyl-2-oxonicotinate and lanthanide( iii) ions with square antriprismatic environment. Dalton Trans 2022; 51:16243-16255. [DOI: 10.1039/d2dt02401b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two isostructural lanthanide(iii)-based coordination polymers with square antiprismatic environment are described. Magnetic properties are studied from experimental and theoretical viewpoints to analyze their SIM behavior.
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Affiliation(s)
- Laura Razquin-Bobillo
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), 20018 Donostia-San Sebastián, Spain
| | - Oier Pajuelo-Corral
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), 20018 Donostia-San Sebastián, Spain
| | - Andoni Zabala-Lekuona
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), 20018 Donostia-San Sebastián, Spain
| | - Antonio Rodríguez-Diéguez
- Departamento de Química Inorgánica, UEQ, Universidad de Granada, C/ Severo Ochoa s/n, 18071, Granada, Spain
| | - Javier Cepeda
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), 20018 Donostia-San Sebastián, Spain
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5
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Spillecke L, Tripathi S, Koo C, Ansari M, Vaidya S, Rasamsetty A, Mallah T, Rajaraman G, Shanmugam M, Klingeler R. A high-frequency EPR study of magnetic anisotropy and intermolecular interactions of Co(II) ions. Polyhedron 2021; 208:115389. [DOI: 10.1016/j.poly.2021.115389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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6
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Ji XQ, Xiong J, Sun R, Ma F, Sun HL, Zhang YQ, Gao S. Enhancing the magnetic performance of pyrazine-N-oxide bridged dysprosium chains through controlled variation of ligand coordination modes. Dalton Trans 2021; 50:7048-7055. [PMID: 33949544 DOI: 10.1039/d1dt00635e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
While assembling superparamagnetic units in a controlled manner is crucial for future applications of molecular nanomagnets, optimizing their magnetic properties while achieving directional assembly of these units still remains a formidable challenge. Herein, we demonstrate how the assembly of two dysprosium chain complexes, namely, [Dy2(L)2Cl2(CH3OH)3]n·nCH3OH (1) and [Dy(L)Cl(DMF)]n (2) (H2L = N'-(5-bromo-2-hydroxybenzylidene)pyrazine-N-oxide-carbohydrazide), can be successfully manipulated using an appropriate bridging ligand design. Both complexes contain similar dimeric units bridged by two alkoxido oxygens from an L2- ligand, but extended by its pyrazine-N-oxide group exhibiting two distinct coordination modes, namely, single and double pyrazine-N-oxide bridges, respectively. Magnetic studies reveal that both complexes display typical slow magnetic relaxation under zero direct-current field; however, the anisotropy barrier and the coercive field at 2 K for complex 2 are twice as much as that of 1. A further theoretical study indicates that switching the coordination mode from a single pyrazine-N-oxide bridge to double bridges can enhance both the magnetic anisotropy of dysprosium ions and magnetic coupling within the dimeric cores. The synergistic effect between the magnetic anisotropy of dysprosium ions and magnetic interactions among them directly contributes to the overall better performance of complex 2.
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Affiliation(s)
- Xiao-Qin Ji
- Department of Chemistry and Beijing Key Laboratory of Energy Conversion and Storage Materials, Beijing Normal University, Beijing 100875, P. R. China.
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7
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García-Valdivia AA, Zabala-Lekuona A, Goñi-Cárdenas A, Fernández B, García JA, Quílez del Moral JF, Cepeda J, Rodríguez-Diéguez A. Dilution effect on the slow relaxation of a luminescent dysprosium Metal-Organic Framework based on 2,5-dihydroxyterephthalic acid. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119687] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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8
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Long J, Basalov IV, Lyssenko KA, Cherkasov AV, Mamontova E, Guari Y, Larionova J, Trifonov AA. Synthesis, Structure, Magnetic and Photoluminescent Properties of Dysprosium(III) Schiff Base Single-Molecule Magnets: Investigation of the Relaxation of the Magnetization. Chem Asian J 2020; 15:2706-2715. [PMID: 32633054 DOI: 10.1002/asia.202000658] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 07/03/2020] [Indexed: 12/15/2022]
Abstract
We report here the synthesis, structure, magnetic and photoluminescent properties of three new bifunctional Schiff-base complexes [Dy(L1 )2 (py)2 ][B(Ph)4 ]⋅py (1), [Dy(L1 )2 Cl(DME)] ⋅ 0.5DME (2) and [Dy(L2 )2 Cl] ⋅ 2.5(C7 H8 ) (3) (HL1 =Phenol, 2,4-bis(1,1-dimethylethyl)-6-[[(2-methoxy-5-methylphenyl)imino]methyl]; HL2 =Phenol, 2,4-bis(1,1-dimethylethyl)-6-[[(2-methoxyphenyl)imino]methyl]). The coordination environment of the Dy3+ ion and the direction of the anisotropic axis may be controlled by the combination of the substituent groups of the Schiff bases, the nature of the counter-ions (Cl- vs. BPh4 - ) and the coordinative solvent molecules. A zero-field slow relaxation of the magnetization is evidenced for all complexes but strong differences in the relaxation dynamics are observed depending on the Dy3+ site geometry. In this sense, complex 1 exhibits an anisotropy barrier of 472 cm-1 , which may be favourably compared to other related examples due to the shortening of the Dy-O bond in the axial direction. Besides, the three complexes exhibit a ligand-based luminescence making them as bifunctional magneto-luminescent systems.
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Affiliation(s)
- Jérôme Long
- ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier, France
| | - Ivan V Basalov
- Institute of Organometallic Chemistry of Russian Academy of Sciences, 49 Tropinina str., GSP-445, 630950, Nizhny Novgorod, Russia
| | - Konstantin A Lyssenko
- Institute of Organoelement Compounds of Russian Academy of Sciences, 28 Vavilova str., 119334, Moscow, Russia.,Lomonosov Moscow State Univ., Dept. Chem, Leninskie Gory 1, Build 3, Moscow, 119991, Russia
| | - Anton V Cherkasov
- Institute of Organometallic Chemistry of Russian Academy of Sciences, 49 Tropinina str., GSP-445, 630950, Nizhny Novgorod, Russia
| | | | - Yannick Guari
- ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier, France
| | | | - Alexander A Trifonov
- Institute of Organometallic Chemistry of Russian Academy of Sciences, 49 Tropinina str., GSP-445, 630950, Nizhny Novgorod, Russia.,Institute of Organoelement Compounds of Russian Academy of Sciences, 28 Vavilova str., 119334, Moscow, Russia
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9
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García-garcía A, Zabala-lekuona A, Goñi-cárdenas A, Cepeda J, Seco JM, Salinas-castillo A, Choquesillo-lazarte D, Rodríguez-diéguez A. Magnetic and Luminescent Properties of Isostructural 2D Coordination Polymers Based on 2-Pyrimidinecarboxylate and Lanthanide Ions. Crystals 2020; 10:571. [DOI: 10.3390/cryst10070571] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A couple of isostructural coordination polymers with the general formula [Ln4(pymca)4(AcO)8]n have been obtained from reactions between pyrimidine-2-carboxylate (pymca) ligand and rare-earth ions (Ln = Dy (1), Nd (2)). These two-dimensional compounds have been characterized and the crystal structures have been solved by single-crystal X-ray diffraction technique, resulting in layers along the bc plane based on pymca and acetate anions that act as bridging ligands between metal atoms. Given that pymca and acetate anions possess carboxylate and hetero-nitrogen groups, it is possible to build a coordination polymer whose metal centers have a nine coordination. Furthermore, static and dynamic magnetic measurements of compound 1 reveal the lack of single molecule-magnet (SMM) behavior in this system due to the following two effects: (i) the ligand field does not stabilize magnetic ground states well separated from excited states, and (ii) anisotropy axes are not collinear, according to results with Magellan software. On another level, luminescent properties of compounds 1 and 2 are attributed to singlet π-π* transitions centered on pymca ligand as corroborated by time-dependent density functional theory (TD-DFT) calculations.
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10
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Díaz-Ortega IF, Herrera JM, Dey S, Nojiri H, Rajaraman G, Colacio E. The effect of the electronic structure and flexibility of the counteranions on magnetization relaxation in [Dy(L)2(H2O)5]3+ (L = phosphine oxide derivative) pentagonal bipyramidal SIMs. Inorg Chem Front 2020. [DOI: 10.1039/c9qi01412h] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The effects of the electronic structure and flexibility of triflate anions in a new high-Ueff TBPY-7 SMM, [Dy(OPCy3)2(H2O)5](CF3SO3)3·2OPCy3, have been analyzed.
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Affiliation(s)
- Ismael F. Díaz-Ortega
- Departamento de Química Inorgánica
- Facultad de Ciencias
- Universidad de Granada
- Granada
- Spain
| | - Juan Manuel Herrera
- Departamento de Química Inorgánica
- Facultad de Ciencias
- Universidad de Granada
- Granada
- Spain
| | - Sourav Dey
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - Hiroyuki Nojiri
- Institute for Materials Research
- Tohoku University
- Sendai
- Japan
| | - Gopalan Rajaraman
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - Enrique Colacio
- Departamento de Química Inorgánica
- Facultad de Ciencias
- Universidad de Granada
- Granada
- Spain
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11
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Shukla P, Ansari KU, Gao C, Vaidya S, Tripathi S, Kumar P, Butcher RJ, Overgaard J, Shanmugam M. Influence of anion induced geometry change in Zn(ii) on the magnetization relaxation dynamics of Dy(iii) in Zn–Dy–Zn complexes. Dalton Trans 2020; 49:10580-10593. [DOI: 10.1039/d0dt00949k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of [Zn2Dy(L1)2(OAc)4](X) where X = (NO3)0.92(Br)0.08 (1), ClO4 (2), Cl (3) and PF6 (4) complexes were synthesized and their dc and ac magnetic data investigated. Experimental results are validated through MOLCAS calculations.
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Affiliation(s)
- Pragya Shukla
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai
- India
| | | | - Chen Gao
- Department of Chemistry and CMC
- Aarhus University
- Aarhus C
- Denmark
| | - Shefali Vaidya
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai
- India
| | - Shalini Tripathi
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai
- India
| | - Pardeep Kumar
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai
- India
| | | | - Jacob Overgaard
- Department of Chemistry and CMC
- Aarhus University
- Aarhus C
- Denmark
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12
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Gómez-Núñez A, Alonso-Gil S, López C, Roura-Grabulosa P, Vilà A. From Ethanolamine Precursor Towards ZnO-How N Is Released from the Experimental and Theoretical Points of View. Nanomaterials (Basel) 2019; 9:E1415. [PMID: 31623410 PMCID: PMC6835746 DOI: 10.3390/nano9101415] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 09/26/2019] [Accepted: 09/29/2019] [Indexed: 11/16/2022]
Abstract
This work presents experimental and computational studies on ZnO formation after decomposition of a sol-gel precursor containing ethanolamine and Zn(II) acetate. The structural modifications suffered during decomposition of the monomeric and dimeric Zn(II) complexes formed, containing bidentate deprotonated ethanolamine and acetato ligands, have been described experimentally and explained via Car-Parrinello Molecular Dynamics. Additional metadynamics simulations provide an overview of the dimer evolution by the cleavage of the Zn-N bond, the structural changes produced and their effects on the Zn(II) environment. The results provide conclusive evidence of the relevance of ethanolamine used as a stabilizer in the formation of ZnO.
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Affiliation(s)
- Alberto Gómez-Núñez
- Department of Electronic and Biomedical Engineering, University of Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain.
- Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, Joan XXIII s/n, 08028 Barcelona, Spain.
- FAE Francisco Albero S.A.U., Rafael Barradas 19, Granvia L'Hospitalet Economic District, 08908 L'Hospitalet de Llobregat, Spain.
| | - Santiago Alonso-Gil
- Department of Inorganic and Organic Chemistry, University of Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain.
- J. Heyrovský Institute of Physical Chemistry, Czech Academy of Sciences, Dolejškova 2155/3, 18223 Prague 8, Czech Republic.
| | - Concepción López
- Department of Inorganic and Organic Chemistry, University of Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain.
| | - Pere Roura-Grabulosa
- Department of Physics, Campus Montilivi, University of Girona, Edif. PII, 17003 Girona, Spain.
| | - Anna Vilà
- Department of Electronic and Biomedical Engineering, University of Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain.
- Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, Joan XXIII s/n, 08028 Barcelona, Spain.
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13
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Boulkedid AL, Beghidja A, Beghidja C, Guari Y, Larionova J, Long J. Synthesis, structure and magnetic properties of a series of dinuclear heteroleptic Zn 2+/Ln 3+ Schiff base complexes: effect of lanthanide ions on the slow relaxation of magnetization. Dalton Trans 2019; 48:11637-11641. [PMID: 31304952 DOI: 10.1039/c9dt02228g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report an investigation on the synthesis, structure and magnetic properties of a series of heteroleptic Zn2+/Ln3+ complexes of the general formula [ZnLClLn(o-van)(H2O)(NO3)]·H2O (H2L = N,N'-bis(3-methoxysalicylidene)-1,2-diaminoethane; o-van = o-vanillinate; Ln = Tb (1), Dy (2), Er (3)). All the compounds exhibit a slow relaxation of their magnetization and the dysprosium analogue shows one of the highest anisotropic barriers for ZnDy complexes.
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Affiliation(s)
- Ahlem-Linda Boulkedid
- Unité de Recherche de Chimie de l'Environnement et Moléculaire Structurale (CHEMS), Université frères Mentouri Constantine, Route Aïn elbey, 25000 Constantine, Algeria and Institut Charles Gerhardt Montpellier, UMR 5253, Ingénierie Moléculaire et Nano-Objets, Université de Montpellier, ENSCM, CNRS, Place E. Bataillon, 34095 Montpellier Cedex 5, France.
| | - Adel Beghidja
- Unité de Recherche de Chimie de l'Environnement et Moléculaire Structurale (CHEMS), Université frères Mentouri Constantine, Route Aïn elbey, 25000 Constantine, Algeria
| | - Chahrazed Beghidja
- Unité de Recherche de Chimie de l'Environnement et Moléculaire Structurale (CHEMS), Université frères Mentouri Constantine, Route Aïn elbey, 25000 Constantine, Algeria
| | - Yannick Guari
- Institut Charles Gerhardt Montpellier, UMR 5253, Ingénierie Moléculaire et Nano-Objets, Université de Montpellier, ENSCM, CNRS, Place E. Bataillon, 34095 Montpellier Cedex 5, France.
| | - Joulia Larionova
- Institut Charles Gerhardt Montpellier, UMR 5253, Ingénierie Moléculaire et Nano-Objets, Université de Montpellier, ENSCM, CNRS, Place E. Bataillon, 34095 Montpellier Cedex 5, France.
| | - Jérôme Long
- Institut Charles Gerhardt Montpellier, UMR 5253, Ingénierie Moléculaire et Nano-Objets, Université de Montpellier, ENSCM, CNRS, Place E. Bataillon, 34095 Montpellier Cedex 5, France.
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14
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Long J. Luminescent Schiff-Base Lanthanide Single-Molecule Magnets: The Association Between Optical and Magnetic Properties. Front Chem 2019; 7:63. [PMID: 30788341 PMCID: PMC6373491 DOI: 10.3389/fchem.2019.00063] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Accepted: 01/23/2019] [Indexed: 12/03/2022] Open
Abstract
Luminescent Single-Molecule Magnets (SMM) belong to a new class of multifunctional molecule-materials that associate luminescence and slow relaxation of their magnetization within a single crystalline phase. We present in this mini-review the major advances that have been achieved in this new field over the last few years. More particularly, we will focus on the use of Schiff-base complexes in order to correlate magnetism and luminescence, as well as discussing the future outlooks of the field.
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Affiliation(s)
- Jérôme Long
- Institut Charles Gerhardt, Equipe Ingénierie Moléculaire et Nano-Objets, Université de Montpellier, ENSCM, CNRS, Montpellier, France
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15
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Wen HR, Zhang JL, Liang FY, Yang K, Liu SJ, Liao JS, Liu CM. TbIII/3d–TbIII clusters derived from a 1,4,7-triazacyclononane-based hexadentate ligand with field-induced slow magnetic relaxation and oxygen-sensitive luminescence. NEW J CHEM 2019. [DOI: 10.1039/c8nj05777j] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A family of new TbIII/3d–TbIII cluster complexes based on N,N′,N′′-tris(3,5-dimethyl-2-hydroxybenzyl)-1,4,7-triazacyclononane have been synthesized and they exhibit interesting magnetic and luminescent properties.
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Affiliation(s)
- He-Rui Wen
- School of Metallurgy and Chemical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- P. R. China
| | - Jia-Li Zhang
- School of Metallurgy and Chemical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- P. R. China
| | - Fu-Yong Liang
- School of Metallurgy and Chemical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- P. R. China
| | - Kai Yang
- School of Metallurgy and Chemical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- P. R. China
| | - Sui-Jun Liu
- School of Metallurgy and Chemical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- P. R. China
| | - Jin-Sheng Liao
- School of Metallurgy and Chemical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- 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
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16
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Athanasopoulou AA, Baldoví JJ, Carrella LM, Rentschler E. Field-induced slow magnetic relaxation in the first Dy(iii)-centered 12-metallacrown-4 double-decker. Dalton Trans 2019; 48:15381-15385. [DOI: 10.1039/c9dt02432h] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The first double-decker Ga(iii)/Dy(iii) 12-MC-4 complex has been isolated and magnetic studies revealed its SMM properties.
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Affiliation(s)
- Angeliki A. Athanasopoulou
- Institute of Inorganic and Analytical Chemistry
- Johannes Gutenberg University Mainz
- D-55128 Mainz
- Germany
- Graduate School Materials Science in Mainz
| | - José J. Baldoví
- Max Planck Institute for the Structure and Dynamics of Matter
- D-22761 Hamburg
- Germany
| | - Luca M. Carrella
- Institute of Inorganic and Analytical Chemistry
- Johannes Gutenberg University Mainz
- D-55128 Mainz
- Germany
| | - Eva Rentschler
- Institute of Inorganic and Analytical Chemistry
- Johannes Gutenberg University Mainz
- D-55128 Mainz
- Germany
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17
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Ke H, Wei W, Yang Y, Zhang J, Zhang YQ, Xie G, Chen S. Effect of coordination anion substitutions on relaxation dynamics of defect dicubane Zn2Dy2 tetranuclear clusters. Dalton Trans 2019; 48:7844-7852. [DOI: 10.1039/c9dt01074b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
We showcase the coordination anion substitution effect on the relaxation dynamics of defect dicubane Zn2Dy2 tetranuclear clusters.
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Affiliation(s)
- Hongshan Ke
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- P. R. China
| | - Wen Wei
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- P. R. China
| | - Yongsheng Yang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- P. R. China
| | - Jun Zhang
- School of Materials and Chemical Engineering
- Anhui Jianzhu University
- Hefei
- 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
| | - Gang Xie
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- P. R. China
| | - Sanping Chen
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- P. R. China
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18
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Liu CM, Zhang DQ, Zhang YQ, Li M, Zhu DB. Both magnetic relaxation and luminescence of Zn2Dy2 cluster complexes regulated by the bis-imine chain in Schiff base ligands. NEW J CHEM 2019. [DOI: 10.1039/c9nj03659h] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The bis-imine bridge in Schiff base ligands has effects on the magnetic relaxation and luminescence of two Zn2Dy2 cluster complexes.
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Affiliation(s)
- Cai-Ming Liu
- Beijing National Laboratory for Molecular Sciences
- Center for Molecular Science
- Key Laboratory of Organic Solids
- Institute of Chemistry
- Chinese Academy of Sciences
| | - De-Qing Zhang
- Beijing National Laboratory for Molecular Sciences
- Center for Molecular Science
- Key Laboratory of Organic Solids
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS
- School of Physical Science and Technology
- Nanjing Normal University
- Nanjing
- China
| | - Miao Li
- Jiangsu Key Laboratory for NSLSCS
- School of Physical Science and Technology
- Nanjing Normal University
- Nanjing
- China
| | - Dao-Ben Zhu
- Beijing National Laboratory for Molecular Sciences
- Center for Molecular Science
- Key Laboratory of Organic Solids
- Institute of Chemistry
- Chinese Academy of Sciences
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19
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Echenique-Errandonea E, Zabala-Lekuona A, Cepeda J, Rodríguez-Diéguez A, Seco JM, Oyarzabal I, Colacio E. Effect of the change of the ancillary carboxylate bridging ligand on the SMM and luminescence properties of a series of carboxylate-diphenoxido triply bridged dinuclear ZnLn and tetranuclear Zn 2Ln 2 complexes (Ln = Dy, Er). Dalton Trans 2018; 48:190-201. [PMID: 30516203 DOI: 10.1039/c8dt03800g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Eleven new dinuclear and tetranuclear compounds of general formulae [Zn(μ-L)(μ-X)Ln(NO3)2]·nS, [Zn2Dy2(μ3-L')2(μ-sal)2(NO3)(CH3OH)](NO3)·5CH3OH and [Zn2Er2(μ3-L')2(μ-sal)2(CH3OH)2](NO3)2·4CH3OH (X = benzoate, anthracenate, diclofenac, salicylate, 2,6-dihydroxybenzoate; Ln = Dy, Er; S = water, acetonitrile, methanol) were prepared from the N,N'-dimethyl-N,N'-bis(2-hydroxy-3-formyl-5-bromobenzyl)ethylenediamine compartmental ligand (H2L). Complexes 1-6 and 9-11 consist of diphenoxido-carboxylate triply bridged compounds, which differ mainly in the carboxylate bridging ligand. It should be noted that the acidic character of the salicylic acid promotes, in the presence of methanol, the methoxylation of the H2L ligand thereby yielding a hemiacetal H3L', which is able to connect the Ln(iii) ions of two ZnLn dinuclear units forming the Zn2Ln2 tetranuclear complexes 7 and 8. All compounds display SMM behaviour in the presence of an external field with effective energy barriers (Ueff) as high as 61 K. Magneto-structural data for these complexes reveal that their SMM behaviour is not only significantly affected by the type of Ln(iii) ion but also by the carboxylate bridging ligand connecting the Zn(ii) and Ln(iii) ions. Photoluminescence properties have also been accomplished, showing that the ligands are able to sensitize lanthanide centred emissions in the visible and near-infrared regions with variable capacity. Moreover, the analysis of the luminescence decay curves reveals emission lifetimes in the range of few microsecond or hundreds of nanoseconds for Dy(iii)-based or Er(iii)-based luminophores, respectively.
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Affiliation(s)
- E Echenique-Errandonea
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco UPV/EHU, Paseo Manuel Lardizabal, no 3, 20018, Donostia-San Sebastián, Spain
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20
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Long J, Basalov IV, Forosenko NV, Lyssenko KA, Mamontova E, Cherkasov AV, Damjanović M, Chibotaru LF, Guari Y, Larionova J, Trifonov AA. Dysprosium Single-Molecule Magnets with Bulky Schiff Base Ligands: Modification of the Slow Relaxation of the Magnetization by Substituent Change. Chemistry 2018; 25:474-478. [DOI: 10.1002/chem.201804429] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Jérôme Long
- Institut Charles Gerhardt Montpellier, UMR 5253; Ingénierie Moléculaire et Nano-Objets; ENSCM/CNRS/UM; Place E. Bataillon 34095 Montpellier Cedex 5 France
| | - Ivan V. Basalov
- Institute of Organometallic Chemistry of Russian Academy of Sciences; 49 Tropinina str 630950 Nizhny Novgorod GSP-445 Russia
| | - Natalia V. Forosenko
- Institute of Organometallic Chemistry of Russian Academy of Sciences; 49 Tropinina str 630950 Nizhny Novgorod GSP-445 Russia
| | - Konstantin A. Lyssenko
- Institute of Organoelement Compounds of Russian Academy of Sciences; 28 Vavilova str. 119334 Moscow Russia
| | - Ekaterina Mamontova
- Institut Charles Gerhardt Montpellier, UMR 5253; Ingénierie Moléculaire et Nano-Objets; ENSCM/CNRS/UM; Place E. Bataillon 34095 Montpellier Cedex 5 France
| | - Anton V. Cherkasov
- Institute of Organometallic Chemistry of Russian Academy of Sciences; 49 Tropinina str 630950 Nizhny Novgorod GSP-445 Russia
| | - Marko Damjanović
- Physikalisches Institut and Institute of Nanotechnology; Karlsruhe Institute of Technology; Wolfgang-Gaede-Strasse 1 76131 Karlsruhe Germany
| | - Liviu F. Chibotaru
- Theory of Nanomaterials Group and INPAC; Katholieke Universiteit Leuven; Celesijnenlaan, 200F Heverlee B-3001 Belgium
| | - Yannick Guari
- Institut Charles Gerhardt Montpellier, UMR 5253; Ingénierie Moléculaire et Nano-Objets; ENSCM/CNRS/UM; Place E. Bataillon 34095 Montpellier Cedex 5 France
| | - Joulia Larionova
- Institut Charles Gerhardt Montpellier, UMR 5253; Ingénierie Moléculaire et Nano-Objets; ENSCM/CNRS/UM; Place E. Bataillon 34095 Montpellier Cedex 5 France
| | - Alexander A. Trifonov
- Institute of Organometallic Chemistry of Russian Academy of Sciences; 49 Tropinina str 630950 Nizhny Novgorod GSP-445 Russia
- Institute of Organoelement Compounds of Russian Academy of Sciences; 28 Vavilova str. 119334 Moscow Russia
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21
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Díaz-Ortega IF, Herrera JM, Reyes Carmona Á, Galán-Mascarós JR, Dey S, Nojiri H, Rajaraman G, Colacio E. A Chiral Bipyrimidine-Bridged Dy 2 SMM: A Comparative Experimental and Theoretical Study of the Correlation Between the Distortion of the DyO6N2 Coordination Sphere and the Anisotropy Barrier. Front Chem 2018; 6:537. [PMID: 30467538 PMCID: PMC6236069 DOI: 10.3389/fchem.2018.00537] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 10/16/2018] [Indexed: 11/18/2022] Open
Abstract
Chiral bipyrimidine-bridged dinuclear LnIII complexes of general formula [(μ-bipym){((+)-tfacam)3Ln}2] and [(μ-bipym){((-)-tfacam)3Ln}2], have been prepared from the assembly of Ln(AcO)3·nH2O (LnIII = Dy, Gd), (+)/(−)-3-(trifluoroacetyl)camphor enantiopure ligands ((+)/(-)-Htfacam) and bipyrimidine (bipym). The structure and chirality of these complexes have been supported by single-crystal X-Ray diffraction and circular dichroism. The study of the magnetic properties of the GdIII complexes revealed a very weak antiferromagnetic interaction between the GdIII ions through the bipyrimidine bridging ligand. Ab initio CASSCF calculations indicated that the ground Kramers doublet (KD) of both DyIII centers is almost purely axial with the anisotropy axis located close to the two tfacam−ligands at opposite sides of each DyIIIatom, which create an axial crystal field. In keeping with this, ac dynamic measurements indicated slow relaxation of the magnetization at zero field with Ueff = 55.1 K, a pre-exponential factor of τo = 2.17·10−6 s and τQTM = 8 μs. When an optimal dc field of 0.1 T is applied, QTM is quenched and Ueff increases to 75.9 K with τo = 6.16 × 10−7 s. The DyN2O8 coordination spheres and SMM properties of [(μ-bipym){((+)-tfacam)3Ln}2] and their achiral [(Dy(β-diketonate)3)2(μ-bpym)]analogous have been compared and a magneto-structural correlation has been established, which has been supported by theoretical calculations. In contrast to the GdIII compounds, the magnetic exchange interaction between the DyIII ions has been calculated to be very weak and, generally, ferromagnetic in nature. Relaxation mechanisms for [(μ-bipym){((+)-tfacam)3Ln}2] and previously reported analogous have been proposed from ab initio calculations. As the magnetic exchange interaction found to be very weak, the observed magnetization blockade in these systems are primarily dictated by the single ion anisotropy of DyIII ions.
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Affiliation(s)
- Ismael F Díaz-Ortega
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, Granada, Spain
| | - Juan Manuel Herrera
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, Granada, Spain
| | - Álvaro Reyes Carmona
- Institute of Chemical Research of Catalonia, The Barcelona Institute of Science and Technology, Tarragona, Spain
| | - José Ramón Galán-Mascarós
- Institute of Chemical Research of Catalonia, The Barcelona Institute of Science and Technology, Tarragona, Spain.,Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain
| | - Sourav Dey
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, India
| | - Hiroyuki Nojiri
- Institute for Materials Research, Tohoku University, Sendai, Japan
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, India
| | - Enrique Colacio
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, Granada, Spain
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22
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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] [What about the content of this article? (0)] [Affiliation(s)] [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.
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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
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23
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Liu CM, Zhang DQ, Su JB, Zhang YQ, Zhu DB. Single-Molecule Magnet Behavior of 1D Coordination Polymers Based on DyZn2(salen)2 Units and Pyridin-N-Oxide-4-Carboxylate: Structural Divergence and Magnetic Regulation. Inorg Chem 2018; 57:11077-11086. [DOI: 10.1021/acs.inorgchem.8b01653] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Cai-Ming Liu
- Beijing National Laboratory for Molecular Sciences, Center for Molecular Science, Key Laboratory of Organic Solids, Institute of Chemistry, CAS Research/Education Center for Excellence in Molecular Science, Chinese Academy of Sciences, Beijing 100190, China
| | - De-Qing Zhang
- Beijing National Laboratory for Molecular Sciences, Center for Molecular Science, Key Laboratory of Organic Solids, Institute of Chemistry, CAS Research/Education Center for Excellence in Molecular Science, Chinese Academy of Sciences, Beijing 100190, China
| | - Jing-Bu Su
- Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, China
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, China
| | - Dao-Ben Zhu
- Beijing National Laboratory for Molecular Sciences, Center for Molecular Science, Key Laboratory of Organic Solids, Institute of Chemistry, CAS Research/Education Center for Excellence in Molecular Science, Chinese Academy of Sciences, Beijing 100190, China
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24
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Gupta T, Rajaraman G. Magnetic Anisotropy, Magneto-Structural Correlations and Mechanism of Magnetic Relaxation in {DyIII
N8
} Complexes: A Theoretical Perspective. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800350] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Tulika Gupta
- Department of Chemistry; Indian Institute of Technology Bombay; 400076 Powai, Mumbai India
| | - Gopalan Rajaraman
- Department of Chemistry; Indian Institute of Technology Bombay; 400076 Powai, Mumbai India
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25
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Li M, Wu H, Wei Q, Ke H, Yin B, Zhang S, Lv X, Xie G, Chen S. Two {ZnDy III} complexes supported by monophenoxido/dicarboxylate bridges with multiple relaxation processes: carboxylato ancillary ligand-controlled magnetic anisotropy in square antiprismatic Dy III species. Dalton Trans 2018; 47:9482-9491. [PMID: 29961800 DOI: 10.1039/c8dt01842a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two linear-shaped heterometallic trinuclear {ZnII2DyIII} clusters were prepared with a compartmental Schiff-base ligand and carboxylate as the co-ligand. The central DyIII ion is sandwiched by two [ZnHhms(RCOO)2] (H2hms = (2-hydroxy-3-methoxybenzylidene)-semicarbazide) units to form a distorted square antiprismatic (SAP) geometry with D4d symmetry. The DyIII and ZnII ions are triply bridged by one unique monophenoxido/dicarboxylate group, where one of the carboxylates shows a severe angular distortion. The magnetic analysis revealed a field-dependent change with two relaxation processes in 1 and 2, which originated from the molecular magnetic center and dipolar-dipolar coupling. The dipole-induced slow relaxation disappeared upon magnetic-site dilution, while another faster relaxation appeared in the high frequency region associated with the different distortions of the antiprismatic sites for 1 and disordered structures for 2. Ab initio calculations revealed that two {ZnII2DyIII}-carboxylate complexes are axial in nature, but the remarkable quantum tunnelling of the magnetization exists in the ground state, which lowers the anisotropic barrier and prohibits zero-field single-molecule magnet behavior. The crystal field of the carboxylato ancillary ligands produces a competitive effect with the phenoxido bridging ligands on the magnetic anisotropy of the lanthanide ions, which greatly affects the electrostatic distribution of this type of {ZnII2DyIII} single-ion magnets (SIMs). The results offer a model for further investigating structural factors in the relaxation mechanism of SIM systems.
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Affiliation(s)
- Min Li
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, 710127, China.
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26
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Chen S, Mereacre V, Zhao Z, Zhang W, Zhang M, He Z. Targeted replacement: systematic studies of dodecanuclear {MLn} coordination clusters (M = Cr, Co; Ln = Dy, Y). Dalton Trans 2018; 47:7456-7462. [PMID: 29785423 DOI: 10.1039/c8dt01289j] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three dodecanuclear 3d-4f coordination clusters, [CrIII6LnIII6(μ3-OH)8(tbdea)6(C6H5COO)16]·2H2O (Ln = Dy (1), Y (2)) and [CoIII6DyIII6(μ3-OH)8(nbdea)6(m-CH3C6H4COO)16]·2H2O·2CH3CN (3), have been synthesized under solvothermal conditions and characterized. Single-crystal X-ray diffraction analysis revealed that all three compounds possess an analogous {MIII6LnIII6} core (M = Cr, Co; Ln = Dy, Y) and dc magnetic susceptibility studies indicated that the magnetic exchange couplings between DyIII ions are dominant antiferromagnetic, while the CrIII-DyIII interactions are weakly ferromagnetic. Furthermore, the ac magnetic susceptibility measurements showed that both CrIII6DyIII6 compound 1 and CoIIi6DyIII6 compound 3 containing highly anisotropic DyIII ions displayed single-molecule magnetic (SMM) behavior with the energy barrier Ueff increasing from 12.8 K (for 1) to 20.8 K (for 3), indicating that weak 3d-4f exchange couplings enhance the QTM and reduce the energy barrier.
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Affiliation(s)
- Sihuai Chen
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China.
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27
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28
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Oyarzabal I, Rodríguez-Diéguez A, Barquín M, Seco JM, Colacio E. The effect of the disposition of coordinated oxygen atoms on the magnitude of the energy barrier for magnetization reversal in a family of linear trinuclear Zn-Dy-Zn complexes with a square-antiprism DyO 8 coordination sphere. Dalton Trans 2018; 46:4278-4286. [PMID: 28280808 DOI: 10.1039/c7dt00138j] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of trimetallic Zn-Dy-Zn complexes of the general formula [ZnX(μ-L)Dy(μ-L)XZn]Y·nS, where H2L is the compartmental ligand N,N'-dimethyl-N,N'-bis(2-hydroxy-3-formyl-5-bromobenzyl)ethylenediamine, X is the coligand (X = Cl, Br, I and N3), Y is the counteranion and S are the crystallization solvent molecules have been synthesized and magnetically characterized. In all these complexes, the Dy(iii) ions exhibit DyO8 coordination environments with a slightly distorted square-antiprism D4d symmetry. Due to the disposition of the oxygen atoms around the Dy(iii) ions, large easy-axis anisotropy is expected, which is responsible for the high thermal energy barriers for the reversal of the magnetization observed at zero field (in the 144-170 K range for all complexes). A preliminary correlation between the disposition of the oxygen atoms of the ligand (phenoxo and aldehyde) in the DyO8 coordination sphere and the value of Ueff has been established.
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Affiliation(s)
- Itziar Oyarzabal
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco UPV/EHU, Paseo Manuel de Lardizabal, no. 3, 20018, Donostia-San Sebastián, Spain.
| | - Antonio Rodríguez-Diéguez
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, Av. Fuentenueva S/N, 18071 Granada, Spain.
| | - Montserrat Barquín
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco UPV/EHU, Paseo Manuel de Lardizabal, no. 3, 20018, Donostia-San Sebastián, Spain.
| | - José M Seco
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco UPV/EHU, Paseo Manuel de Lardizabal, no. 3, 20018, Donostia-San Sebastián, Spain.
| | - Enrique Colacio
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, Av. Fuentenueva S/N, 18071 Granada, Spain.
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29
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Abstract
Molecular nanomagnets encompass a wide range of coordination complexes possessing several potential applications. A formidable challenge in realizing these potential applications lies in controlling the magnetic properties of these clusters. Microscopic spin Hamiltonian (SH) parameters describe the magnetic properties of these clusters, and viable ways to control these SH parameters are highly desirable. Computational tools play a proactive role in this area, where SH parameters such as isotropic exchange interaction (J), anisotropic exchange interaction (Jx, Jy, Jz), double exchange interaction (B), zero-field splitting parameters (D, E) and g-tensors can be computed reliably using X-ray structures. In this feature article, we have attempted to provide a holistic view of the modelling of these SH parameters of molecular magnets. The determination of J includes various class of molecules, from di- and polynuclear Mn complexes to the {3d-Gd}, {Gd-Gd} and {Gd-2p} class of complexes. The estimation of anisotropic exchange coupling includes the exchange between an isotropic metal ion and an orbitally degenerate 3d/4d/5d metal ion. The double-exchange section contains some illustrative examples of mixed valance systems, and the section on the estimation of zfs parameters covers some mononuclear transition metal complexes possessing very large axial zfs parameters. The section on the computation of g-anisotropy exclusively covers studies on mononuclear Dy(III) and Er(III) single-ion magnets. The examples depicted in this article clearly illustrate that computational tools not only aid in interpreting and rationalizing the observed magnetic properties but possess the potential to predict new generation MNMs.
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Affiliation(s)
- Tulika Gupta
- Department of Chemistry, IIT Powai, Mumbai-400076, India.
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30
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Ke H, Wei W, Zhang YQ, Zhang J, Xie G, Chen S. Influence of alcoholic solvent and acetate anion coordination mode variations on structures and magnetic properties of heterometallic Zn2Dy2 tetranuclear clusters. Dalton Trans 2018; 47:16616-16626. [DOI: 10.1039/c8dt03983f] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We clarify that slight modifications of the synthetic conditions generate two Zn2Dy2 clusters with acetate anion coordination mode variation and different magnetic behaviors.
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Affiliation(s)
- Hongshan Ke
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- P. R. China
| | - Wen Wei
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- 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
| | - Jun Zhang
- School of Materials and Chemical Engineering
- Anhui Jianzhu University
- Hefei
- P. R. China
| | - Gang Xie
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- P. R. China
| | - Sanping Chen
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- P. R. China
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31
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Boulkedid AL, Long J, Beghidja C, Guari Y, Beghidja A, Larionova J. A luminescent Schiff-base heterotrinuclear Zn2Dy single-molecule magnet with an axial crystal field. Dalton Trans 2018; 47:1402-1406. [DOI: 10.1039/c7dt03842a] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A luminescent Zn2Dy single-molecule magnet.
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Affiliation(s)
- Ahlem-Linda Boulkedid
- Unité de Recherche de Chimie de l'Environnement et Moléculaire Structurale (CHEMS)
- Université frères Mentouri Constantine
- 25000 Constantine
- Algeria
- Institut Charles Gerhardt
| | - Jérôme Long
- Institut Charles Gerhardt
- Equipe Ingénierie Moléculaire et Nano-Objets
- Université de Montpellier
- ENSCM
- CNRS. Place Eugène Bataillon
| | - Chahrazed Beghidja
- Unité de Recherche de Chimie de l'Environnement et Moléculaire Structurale (CHEMS)
- Université frères Mentouri Constantine
- 25000 Constantine
- Algeria
| | - Yannick Guari
- Institut Charles Gerhardt
- Equipe Ingénierie Moléculaire et Nano-Objets
- Université de Montpellier
- ENSCM
- CNRS. Place Eugène Bataillon
| | - Adel Beghidja
- Unité de Recherche de Chimie de l'Environnement et Moléculaire Structurale (CHEMS)
- Université frères Mentouri Constantine
- 25000 Constantine
- Algeria
| | - Joulia Larionova
- Institut Charles Gerhardt
- Equipe Ingénierie Moléculaire et Nano-Objets
- Université de Montpellier
- ENSCM
- CNRS. Place Eugène Bataillon
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32
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Chakraborty A, Goura J, Kalita P, Swain A, Rajaraman G, Chandrasekhar V. Heterometallic 3d–4f single molecule magnets containing diamagnetic metal ions. Dalton Trans 2018; 47:8841-8864. [DOI: 10.1039/c8dt01883a] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This perspective deals with the synthesis and study of SMM properties of heterometallic 3d–4f complexes containing diamagnetic 3d metal ions.
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Affiliation(s)
- Amit Chakraborty
- School of Chemical Sciences
- National Institute of Science Education and Research Bhubaneswar
- Khurda – 752050
- India
- Department of Chemistry
| | - Joydeb Goura
- School of Chemical Sciences
- National Institute of Science Education and Research Bhubaneswar
- Khurda – 752050
- India
- Department of Chemistry
| | - Pankaj Kalita
- School of Chemical Sciences
- National Institute of Science Education and Research Bhubaneswar
- Khurda – 752050
- India
| | - Abinash Swain
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai-400 076
- India
| | - Gopalan Rajaraman
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai-400 076
- India
| | - Vadapalli Chandrasekhar
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur-208016
- India
- Tata Institute of Fundamental Research Hyderabad
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33
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Colacio E. Mannich Base Ligands as Versatile Platforms for SMMs. TOP ORGANOMETAL CHEM 2018. [DOI: 10.1007/3418_2018_4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Goura J, Colacio E, Herrera JM, Suturina EA, Kuprov I, Lan Y, Wernsdorfer W, Chandrasekhar V. Heterometallic Zn3
Ln3
Ensembles Containing (μ6
-CO3
) Ligand and Triangular Disposition of Ln3+
ions: Analysis of Single-Molecule Toroic (SMT) and Single-Molecule Magnet (SMM) Behavior. Chemistry 2017; 23:16621-16636. [DOI: 10.1002/chem.201703842] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Indexed: 02/03/2023]
Affiliation(s)
- Joydeb Goura
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur 208016 India
| | - Enrique Colacio
- Departamento de Química Inorgánica, Facultad de Ciencias; Universidad de Granada; Avenida de Fuentenueva s/n 18071 Granada Spain
| | - Juan Manuel Herrera
- Departamento de Química Inorgánica, Facultad de Ciencias; Universidad de Granada; Avenida de Fuentenueva s/n 18071 Granada Spain
| | - Elizaveta A. Suturina
- School of Chemistry; University of Southampton; University Road Southampton SO17 1BJ UK
| | - Ilya Kuprov
- School of Chemistry; University of Southampton; University Road Southampton SO17 1BJ UK
| | - Yanhua Lan
- Institut Néel; CNRS & Université Grenoble Alpes; BP 166, 25 avenue des Martyrs 38042 Grenoble Cedex 9 France
| | | | - Vadapalli Chandrasekhar
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur 208016 India
- Tata Institute of Fundamental Research Hyderabad; Gopanpally Hyderabad 500 107 India
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35
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Wu J, Cador O, Li XL, Zhao L, Le Guennic B, Tang J. Axial Ligand Field in D 4d Coordination Symmetry: Magnetic Relaxation of Dy SMMs Perturbed by Counteranions. Inorg Chem 2017; 56:11211-11219. [PMID: 28853556 DOI: 10.1021/acs.inorgchem.7b01582] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A series of mononuclear DyIII complexes with the general formula [DyLz2(salicylaldehyde)2]·X·solvent (Lz = 6-pyridin-2-yl[1,3,5]triazine-2,4-diamine; X = OH- (1·OH), Cl- (2·Cl), Br- (3·Br)) have been synthesized using mixed salicylaldehyde/pyridinyl-triazine ligands and discriminative counteranions. The DyIII ion in these three complexes resides in a similar D4d coordination geometry with counteranions perturbing the coordination environment and bond lengths and angles in the lattice. Magnetostructural studies reveal that the asymmetric distribution of salicylaldehyde/pyridinyl-triazine ligands and the presence of discriminative counteranions result in the coexistence of large anisotropy and quantum tunneling of magnetization. The magnetic anisotropy is dominated by the axial ligand field with short Dy-Osali distances and large ∠Osali-Dy-Osali angles, while the quantum tunneling relaxation is probably dictated by the π-π stacking of the Lz ligands, which induces an axial constriction of the coordinating plane. Ab initio calculations substantiate the diversity of the magnetic behaviors in these complexes and highlight the importance of axial ligand field with short Dy-Osali distances, large ∠Osali-Dy-Osali angles and less ligand stacking in these pseudo-D4d-symmetrical single-molecule magnets.
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Affiliation(s)
- Jianfeng Wu
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, People's Republic of China
| | - Olivier Cador
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1 , 263 Avenue du General Leclerc, 35042 Rennes Cedex, France
| | - Xiao-Lei Li
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, People's Republic of China
| | - Lang Zhao
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, People's Republic of China
| | - Boris Le Guennic
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1 , 263 Avenue du General Leclerc, 35042 Rennes Cedex, France
| | - Jinkui Tang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, People's Republic of China
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36
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Raya-Barón Á, Oyarzabal I, Arrabal-Campos FM, Seco JM, Rodríguez-Diéguez A, Fernández I. Dinuclear Coordination Compounds Based on a 5-Nitropicolinic Carboxylate Ligand with Single-Molecule Magnet Behavior. Inorg Chem 2017; 56:8768-8775. [DOI: 10.1021/acs.inorgchem.7b00388] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Álvaro Raya-Barón
- Department of Chemistry
and Physics, University of Almería, Ctra. Sacramento s/n, 04120 Almería, Spain
| | - Itziar Oyarzabal
- Department of Applied Chemistry, University of The Basque Country (UPV/EHU), 20018 San Sebastián, Spain
| | | | - José Manuel Seco
- Department of Applied Chemistry, University of The Basque Country (UPV/EHU), 20018 San Sebastián, Spain
| | | | - Ignacio Fernández
- Department of Chemistry
and Physics, University of Almería, Ctra. Sacramento s/n, 04120 Almería, Spain
- BITAL, Research Centre for Agricultural and Food Biotechnology, Ctra. Sacramento, s/n, E-04120, Almería, Spain
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37
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Díaz-Ortega IF, Herrera JM, Gupta T, Rajaraman G, Nojiri H, Colacio E. Design of a Family of Ln3 Triangles with the HAT Ligand (1,4,5,8,9,12-Hexaazatriphenylene): Single-Molecule Magnetism. Inorg Chem 2017; 56:5594-5610. [DOI: 10.1021/acs.inorgchem.6b03031] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Ismael F. Díaz-Ortega
- Departamento de Química Inorgánica, Facultad
de Ciencias, Universidad de Granada, Avda. Fuentenueva s/n, 18071 Granada, Spain
| | - Juan Manuel Herrera
- Departamento de Química Inorgánica, Facultad
de Ciencias, Universidad de Granada, Avda. Fuentenueva s/n, 18071 Granada, Spain
| | - Tulika Gupta
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Hiroyuki Nojiri
- Institute for Materials Research, Tohoku University, Katahira, Sendai 980-8577, Japan
| | - Enrique Colacio
- Departamento de Química Inorgánica, Facultad
de Ciencias, Universidad de Granada, Avda. Fuentenueva s/n, 18071 Granada, Spain
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38
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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] [What about the content of this article? (0)] [Affiliation(s)] [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
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39
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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] [What about the content of this article? (0)] [Affiliation(s)] [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.
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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
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40
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Vignesh KR, Langley SK, Murray KS, Rajaraman G. Quenching the Quantum Tunneling of Magnetization in Heterometallic Octanuclear {TM III4 Dy III4 } (TM=Co and Cr) Single-Molecule Magnets by Modification of the Bridging Ligands and Enhancing the Magnetic Exchange Coupling. Chemistry 2017; 23:1654-1666. [PMID: 27859837 DOI: 10.1002/chem.201604835] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Indexed: 02/03/2023]
Abstract
We report the synthesis, structural characterisation, magnetic properties and provide an ab initio analysis of the magnetic behaviour of two new heterometallic octanuclear coordination complexes containing CoIII and DyIII ions. Single-crystal X-ray diffraction studies revealed molecular formulae of [CoIII4 DyIII4 (μ-OH)4 (μ3 -OMe)4 {O2 CC(CH3 )3 }4 (tea)4 (H2 O)4 ]⋅4 H2 O (1) and [CoIII4 DyIII4 (μ-F)4 (μ3 -OH)4 (o-tol)8 (mdea)4 ]⋅ 3 H2 O⋅EtOH⋅MeOH (2; tea3- =triply deprotonated triethanolamine; mdea2- =doubly deprotonated N-methyldiethanolamine; o-tol=o-toluate), and both complexes display an identical metallic core topology. Furthermore, the theoretical, magnetic and SMM properties of the isostructural complex, [CrIII4 DyIII4 (μ-F4 )(μ3 -OMe)1.25 (μ3 -OH)2.75 (O2 CPh)8 (mdea)4 ] (3), are discussed and compared with a structurally similar complex, [CrIII4 DyIII4 (μ3 -OH)4 (μ-N3 )4 (mdea)4 (O2 CC(CH3 )3 )4 ] (4). DC and AC magnetic susceptibility data revealed single-molecule magnet (SMM) behaviour for 1-4. Each complex displays dynamic behaviour, highlighting the effect of ligand and transition metal ion replacement on SMM properties. Complexes 2, 3 and 4 exhibited slow magnetic relaxation with barrier heights (Ueff ) of 39.0, 55.0 and 10.4 cm-1 respectively. Complex 1, conversely, did not exhibit slow relaxation of magnetisation above 2 K. To probe the variance in the observed Ueff values, calculations by using CASSCF, RASSI-SO and POLY_ANISO routine were performed on these complexes to estimate the nature of the magnetic coupling and elucidate the mechanism of magnetic relaxation. Calculations gave values of JDy-Dy as -1.6, 1.6 and 2.8 cm-1 for complexes 1, 2 and 3, respectively, whereas the JDy-Cr interaction was estimated to be -1.8 cm-1 for complex 3. The developed mechanism for magnetic relaxation revealed that replacement of the hydroxide ion by fluoride quenched the quantum tunnelling of magnetisation (QTM) significantly, and led to improved SMM properties for complex 2 compared with 1. However, the tunnelling of magnetisation at low-lying excited states was still operational for 2, which led to low-temperature QTM relaxation. Replacement of the diamagnetic CoIII ions with paramagnetic CrIII led to CrIII ⋅⋅⋅DyIII coupling, which resulted in quenching of QTM at low temperatures for complexes 3 and 4. The best example was found if both CrIII and fluoride were present, as seen for complex 3, for which both factors additively quenched QTM and led to the observation of highly coercive magnetic hysteresis loops above 2 K. Herein, we propose a synthetic strategy to quench the QTM effects in lanthanide-based SMMs. Our strategy differs from existing methods, in which parameters such as magnetic coupling are difficult to control, and it is likely to have implications beyond the DyIII SMMs studied herein.
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Affiliation(s)
| | - Stuart K Langley
- School of Science and the Environment, Division of chemistry, Manchester Metropolitan University, Manchester, UK
| | - Keith S Murray
- School of Chemistry, Monash University Clayton, Victoria, 3800, Australia
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra, 400076, India), Fax: (+91) 22-2576-7152
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41
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Wen HR, Dong PP, Liu SJ, Liao JS, Liang FY, Liu CM. 3d–4f heterometallic trinuclear complexes derived from amine-phenol tripodal ligands exhibiting magnetic and luminescent properties. Dalton Trans 2017; 46:1153-1162. [DOI: 10.1039/c6dt04027f] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The syntheses, crystal structures, and magnetic properties of a family of new 3d–4f heterometallic trinuclear complexes were investigated. Slow magnetic relaxation was observed for the Zn–Dy–Zn complex besides stronger fluorescent emissions.
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Affiliation(s)
- He-Rui Wen
- School of Metallurgical and Chemical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- P.R. China
| | - Piao-Ping Dong
- School of Metallurgical and Chemical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- P.R. China
| | - Sui-Jun Liu
- School of Metallurgical and Chemical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- P.R. China
| | - Jin-Sheng Liao
- School of Metallurgical and Chemical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- P.R. China
| | - Fu-Yong Liang
- School of Metallurgical and Chemical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- 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
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42
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Chen L, Cui HH, Stavretis SE, Hunter SC, Zhang YQ, Chen XT, Sun YC, Wang Z, Song Y, Podlesnyak AA, Ouyang ZW, Xue ZL. Slow Magnetic Relaxations in Cobalt(II) Tetranitrate Complexes. Studies of Magnetic Anisotropy by Inelastic Neutron Scattering and High-Frequency and High-Field EPR Spectroscopy. Inorg Chem 2016; 55:12603-12617. [PMID: 27989182 DOI: 10.1021/acs.inorgchem.6b01544] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Three mononuclear cobalt(II) tetranitrate complexes (A)2[Co(NO3)4] with different countercations, Ph4P+ (1), MePh3P+ (2), and Ph4As+ (3), have been synthesized and studied by X-ray single-crystal diffraction, magnetic measurements, inelastic neutron scattering (INS), high-frequency and high-field EPR (HF-EPR) spectroscopy, and theoretical calculations. The X-ray diffraction studies reveal that the structure of the tetranitrate cobalt anion varies with the countercation. 1 and 2 exhibit highly irregular seven-coordinate geometries, while the central Co(II) ion of 3 is in a distorted-dodecahedral configuration. The sole magnetic transition observed in the INS spectroscopy of 1-3 corresponds to the zero-field splitting (2(D2 + 3E2)1/2) from 22.5(2) cm-1 in 1 to 26.6(3) cm-1 in 2 and 11.1(5) cm-1 in 3. The positive sign of the D value, and hence the easy-plane magnetic anisotropy, was demonstrated for 1 by INS studies under magnetic fields and HF-EPR spectroscopy. The combined analyses of INS and HF-EPR data yield the D values as +10.90(3), +12.74(3), and +4.50(3) cm-1 for 1-3, respectively. Frequency- and temperature-dependent alternating-current magnetic susceptibility measurements reveal the slow magnetization relaxation in 1 and 2 at an applied dc field of 600 Oe, which is a characteristic of field-induced single-molecule magnets (SMMs). The electronic structures and the origin of magnetic anisotropy of 1-3 were revealed by calculations at the CASPT2/NEVPT2 level.
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Affiliation(s)
- Lei Chen
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University , Nanjing 210023, People's Republic of China
| | - Hui-Hui Cui
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University , Nanjing 210023, People's Republic of China
| | - Shelby E Stavretis
- Department of Chemistry, University of Tennessee , Knoxville, Tennessee 37996, United States
| | - Seth C Hunter
- Department of Chemistry, University of Tennessee , Knoxville, Tennessee 37996, United States
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology, Nanjing Normal University , Nanjing 210023, People's Republic of China
| | - Xue-Tai Chen
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University , Nanjing 210023, People's Republic of China
| | - Yi-Chen Sun
- Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology , Wuhan 430074, People's Republic of China
| | - Zhenxing Wang
- Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology , Wuhan 430074, People's Republic of China
| | - You Song
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University , Nanjing 210023, People's Republic of China
| | - Andrey A Podlesnyak
- Quantum Condensed Matter Division, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States
| | - Zhong-Wen Ouyang
- Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology , Wuhan 430074, People's Republic of China
| | - Zi-Ling Xue
- Department of Chemistry, University of Tennessee , Knoxville, Tennessee 37996, United States
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Pugh T, Chilton NF, Layfield RA. Antimony-ligated dysprosium single-molecule magnets as catalysts for stibine dehydrocoupling. Chem Sci 2016; 8:2073-2080. [PMID: 28451326 PMCID: PMC5399632 DOI: 10.1039/c6sc04465d] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Accepted: 11/21/2016] [Indexed: 11/29/2022] Open
Abstract
The synthesis of antimony-ligated dysprosium SMMs is described in addition to the unexpected reactivity of the SMMs in stibine dehydrocoupling catalysis.
Single-molecule magnets (SMMs) are coordination compounds that exhibit magnetic bistability below a characteristic blocking temperature. Research in this field continues to evolve from its fundamental foundations towards applications of SMMs in information storage and spintronic devices. Synthetic chemistry plays a crucial role in targeting the properties that could ultimately produce SMMs with technological potential. The ligands in SMMs are invariably based on non-metals; we now report a series of dysprosium SMMs (in addition to their magnetically dilute analogues embedded in yttrium matrices) that contain ligands with the metalloid element antimony as the donor atom, i.e. [(η5-Cp′2Dy){μ-Sb(H)Mes}]3 (1-Dy) and [(η5-Cp′2Dy)3{μ-(SbMes)3Sb}] (2-Dy), which contain the stibinide ligand [Mes(H)Sb]– and the unusual Zintl-like ligand [Sb4Mes3]3–, respectively (Cp′ = methylcyclopentadienyl; Mes = mesityl). The zero-field anisotropy barriers in 1-Dy and 2-Dy are Ueff = 345 cm–1 and 270 cm–1, respectively. Stabilization of the antimony-ligated SMMs is contingent upon careful control of reaction time and temperature. With longer reaction times and higher temperatures, the stibine pro-ligands are catalytically dehydrocoupled by the rare-earth precursor complexes. NMR spectroscopic studies of the yttrium-catalysed dehydrocoupling reactions reveal that 1-Y and 2-Y are formed during the catalytic cycle. By implication, 1-Dy and 2-Dy should also be catalytic intermediates, hence the nature of these complexes as SMMs in the solid-state and as catalysts in solution introduces a strategy whereby new molecular magnets can be identified by intercepting species formed during catalytic reactions.
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Affiliation(s)
- Thomas Pugh
- School of Chemistry , The University of Manchester , Oxford Road , Manchester , M13 9PL , UK . ;
| | - Nicholas F Chilton
- School of Chemistry , The University of Manchester , Oxford Road , Manchester , M13 9PL , UK . ;
| | - Richard A Layfield
- School of Chemistry , The University of Manchester , Oxford Road , Manchester , M13 9PL , UK . ;
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Béreau V, Bolvin H, Duhayon C, Sutter JP. Bi-Compartmental Schiff-Base with Peripheral Ester Functionalization: Synthesis and Magnetic Behavior of Bimetallic Zn-Ln Complexes (Ln = Dy, Tb, Gd). Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600924] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Virginie Béreau
- CNRS; LCC (Laboratoire de Chimie de Coordination); 205 route de Narbonne 31077 Toulouse France
- Université de Toulouse; UPS; INPT; 31077 Toulouse France
| | - Hélène Bolvin
- Laboratoire de Chimie et de Physique Quantiques; Université Toulouse 3; 118 Route de Narbonne 31062 Toulouse France
| | - Carine Duhayon
- CNRS; LCC (Laboratoire de Chimie de Coordination); 205 route de Narbonne 31077 Toulouse France
- Université de Toulouse; UPS; INPT; 31077 Toulouse France
| | - Jean-Pascal Sutter
- CNRS; LCC (Laboratoire de Chimie de Coordination); 205 route de Narbonne 31077 Toulouse France
- Université de Toulouse; UPS; INPT; 31077 Toulouse France
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GUPTA TULIKA, VELMURUGAN GUNASEKARAN, RAJESHKUMAR THAYALAN, RAJARAMAN GOPALAN. Role of Lanthanide-Ligand bonding in the magnetization relaxation of mononuclear single-ion magnets: A case study on Pyrazole and Carbene ligated Ln I I I (Ln=Tb, Dy, Ho, Er) complexes. J CHEM SCI 2016. [DOI: 10.1007/s12039-016-1147-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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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] [What about the content of this article? (0)] [Affiliation(s)] [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
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47
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Pugh T, Chilton NF, Layfield RA. A Low-Symmetry Dysprosium Metallocene Single-Molecule Magnet with a High Anisotropy Barrier. Angew Chem Int Ed Engl 2016; 55:11082-5. [PMID: 27460170 DOI: 10.1002/anie.201604346] [Citation(s) in RCA: 142] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 06/07/2016] [Indexed: 11/10/2022]
Abstract
The single-molecule magnet (SMM) properties of the isocarbonyl-ligated dysprosium metallocene [Cp*2 Dy{μ-(OC)2 FeCp}]2 (1Dy ), which contains a rhombus-shaped Dy2 Fe2 core, are described. Combining a strong axial [Cp*](-) ligand field with a weak equatorial field consisting of the isocarbonyl ligands leads to an anisotropy barrier of 662 cm(-1) in zero applied field. The dominant thermal relaxation pathways in 1Dy involves at least the fourth-excited Kramers doublet, thus demonstrating that prominent SMM behavior can be observed for dysprosium in low-symmetry environments.
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Affiliation(s)
- Thomas Pugh
- School of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, U.K
| | - Nicholas F Chilton
- School of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, U.K
| | - Richard A Layfield
- School of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, U.K..
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48
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Affiliation(s)
- Thomas Pugh
- School of Chemistry; The University of Manchester; Oxford Road Manchester M13 9PL U.K
| | - Nicholas F. Chilton
- School of Chemistry; The University of Manchester; Oxford Road Manchester M13 9PL U.K
| | - Richard A. Layfield
- School of Chemistry; The University of Manchester; Oxford Road Manchester M13 9PL U.K
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Jiménez JR, Díaz-Ortega IF, Ruiz E, Aravena D, Pope SJA, Colacio E, Herrera JM. Lanthanide Tetrazolate Complexes Combining Single-Molecule Magnet and Luminescence Properties: The Effect of the Replacement of Tetrazolate N3by β-Diketonate Ligands on the Anisotropy Energy Barrier. Chemistry 2016; 22:14548-59. [DOI: 10.1002/chem.201601457] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Juan-Ramón Jiménez
- Departamento de Química Inorgánica; Facultad de Ciencias; Universidad de Granada; Avda. Fuentenueva s/n 18071 Granada Spain
| | - Ismael F. Díaz-Ortega
- Departamento de Química Inorgánica; Facultad de Ciencias; Universidad de Granada; Avda. Fuentenueva s/n 18071 Granada Spain
| | - Eliseo Ruiz
- Departament de Química Inorgànica and Institut de Recerca de Química Teòrica i Computacional; Universitat de Barcelona; Diagonal 645 08028 Barcelona Spain
| | - Daniel Aravena
- Departamento de Química de los Materiales; Facultad de Química y Biología; Universidad de Santiago de Chile (USACH); Casilla 40, Correo 33 Santiago Chile
| | - Simon J. A. Pope
- Cardiff School of Chemistry; Cardiff University Cardiff CF10 3AT UK
| | - Enrique Colacio
- Departamento de Química Inorgánica; Facultad de Ciencias; Universidad de Granada; Avda. Fuentenueva s/n 18071 Granada Spain
| | - Juan Manuel Herrera
- Departamento de Química Inorgánica; Facultad de Ciencias; Universidad de Granada; Avda. Fuentenueva s/n 18071 Granada Spain
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Wang Y, Guo M, Wu J, Li XL, Li YH, Gao Y, Tang J. Two 1,8-naphthalenediol-based dysprosium complexes: syntheses, structures, and magnetic properties. J COORD CHEM 2016. [DOI: 10.1080/00958972.2016.1190837] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Yue Wang
- School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun, China
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China
| | - Mei Guo
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China
| | - Jianfeng Wu
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China
| | - Xiao-Lei Li
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China
| | - Yun-Hui Li
- School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun, China
| | - Ying Gao
- School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun, China
| | - Jinkui Tang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China
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