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Kumar P, Kalita P, Palacios MA, Kumar V, Acharya J, Colacio E, Chandrasekhar V. Synthesis, structures and magnetic studies of hexanuclear lanthanide complexes: SMM behavior of the Dy III analogue and MCE properties of the Gd III analogue. Dalton Trans 2023; 52:10594-10608. [PMID: 37462111 DOI: 10.1039/d3dt01489d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2023]
Abstract
The synthesis, structure and magnetic properties of homometallic hexanuclear lanthanide complexes [Ln6(HL)4(tfa)4(S)2]·2NO3·x H2O·yMeOH (1, Ln = Gd, S = MeOH, x = 0, y = 0; 2, Ln = Tb, S = H2O, x = 2, y = 2; 3, Ln = Dy, S = MeOH, x = 0, y = 2; 4, Ln = Er, S = MeOH, x = 0, y = 2). [(H4L) = 6-((bis(2-hydroxyethyl)amino)-N'-(2-hydroxybenzylidene)picolinohydrazide) (tfa = trifloroacetylacetone)] are reported. These hexanuclear assemblies are made up of two trinuclear triangular sub-units linked through the oxygen atoms of two phenoxide bridging groups in a corner sharing arrangement. Magnetic studies reveal that 1 displays a magnetocaloric effect with a maximum value of -ΔSm = 21.03 J kg-1 K-1 at T = 3 K and under an applied field change ΔB = 5 T. Complex 3 shows slow relaxation of magnetization even under zero applied field although a clear maximum in the ac susceptibility plots cannot be seen. However, under an optimal applied field of 0.2 T, clear maxima are observed in the out-of-phase (χ''M) component of the ac susceptibility in the temperature range 3.5 K (2 kHz) to 10.5 K (10 kHz). The temperature dependence of the relaxation times could be fitted to the sum of Orbach, Raman and QTM relaxation processes affording the following parameters: τo = 3.4(9) × 10-8 s, Ueff = 94(2) K, BRaman = 16.43(1) K-n s-1, n = 3.2(3) and τQTM = 0.0044(3) s. 4, under an applied magnetic field of 0.2 T, shows slow relaxation of magnetization through a thermally activated Orbach process with Ueff = 18.2(9) K and τo = 3.5(3) × 10-8 s.
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Affiliation(s)
- Pawan Kumar
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India.
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad-500107, India
| | - Pankaj Kalita
- Department of Chemistry, Nowgong Girls' College, Nagaon, Assam-782002, India
| | - María A Palacios
- Department of Inorganic Chemistry, University of Granada, 18071-Granada, Spain.
| | - Vierandra Kumar
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India.
| | - Joydev Acharya
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India.
| | - Enrique Colacio
- Department of Inorganic Chemistry, University of Granada, 18071-Granada, Spain.
| | - Vadapalli Chandrasekhar
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India.
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad-500107, India
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2
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Bhanja A, Herchel R, Moreno-Pineda E, Khara A, Wernsdorfer W, Ray D. Synthesis, characterization, magnetism and theoretical analysis of hetero-metallic [Ni 2Ln 2] partial di-cubane assemblies. Dalton Trans 2021; 50:12517-12527. [PMID: 34374397 DOI: 10.1039/d1dt00510c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A family of four isostructural [Ln2Ni2(L)2(μ3-OCH3)2(μ1,3-PhCO2)2(PhCO2)2(CH3OH)4]·2CH3OH [where Ln = Gd (1), Tb (2), Dy (3) and Ho (4)] complexes has been synthesized using Schiff base ligand 2-[{(2-hydroxybenzyl)imino}methyl]-6-methoxyphenol (H2L). All the complexes possess a partial di-cubane core structure where the growth of the core is contingent upon the ligand anions and solvent generated μ3-OCH3 groups. DC magnetic analysis revealed dominating ferromagnetic interactions between the metal ions, however, we find no slow relaxation characteristics in the AC susceptibility. Further insight into the magnetic behavior of the reported complexes was achieved using DFT and CASSCF theoretical calculations, leading to the comprehension of the fast relaxation characteristics observed by magnetometry.
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Affiliation(s)
- Avik Bhanja
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India.
| | - Radovan Herchel
- Department of Inorganic Chemistry, Faculty of Science, Palacky University, 17. listopadu12, CZ-771 46 Olomouc, Czech Republic
| | - Eufemio Moreno-Pineda
- Depto. de Química-Física, Escuela de Química, Facultad de Ciencias Naturales, Exactas y Tecnología, Universidad de Panamá, Panamá, Panamá
| | - Anjan Khara
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India.
| | - Wolfgang Wernsdorfer
- Institute for Quantum Materials and Technology (IQMT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany.,Physikalisches Institut, Karlsruhe Institute of Technology, D-76131 Karlsruhe, Germany
| | - Debashis Ray
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India.
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3
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Wang Y, Yuan Z, Ren H, Xu W, Xu J, Zhang H, Sha J, Zhang H. Structures and magnetic properties of two hexanuclear [Co2Ln4]complexes. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119786] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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4
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Ge J, Qiu Y, Wang H, Su J, Wang P, Chen Z. Magnetic Relaxation Dynamics of a Binuclear Diluted Er(III)/Y(III) Compound Influenced by Lattice Solvent. Chem Asian J 2020; 15:3013-3019. [DOI: 10.1002/asia.202000655] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 07/17/2020] [Indexed: 11/10/2022]
Affiliation(s)
- Jing‐Yuan Ge
- College of Chemistry and Materials Engineering Wenzhou University Wenzhou 325035 China
| | - Ya‐Ru Qiu
- State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China
| | - Hai‐Ying Wang
- State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China
| | - Jian Su
- State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China
| | - Peng Wang
- College of Chemical and Environmental Engineering Shandong University of Science and Technology Qingdao 266590 China
| | - Zhongyan Chen
- College of Chemistry and Materials Engineering Wenzhou University Wenzhou 325035 China
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5
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Wang Y, Yuan Z, Guo Y, Ma X, Meng Z, Sha J, Zhang H. Single‐Molecule Magnetism in Dy
2
Cluster Based on a Schiff Base Ligand. Z Anorg Allg Chem 2020. [DOI: 10.1002/zaac.202000089] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Yingying Wang
- Department of Chemistry and Chemical Engineering Key Laboratory of Inorganic Chemistry in Universities of Shandong Jining University 273155 Qufu P. R. China
| | - Zhuangdong Yuan
- Department of Chemistry and Chemical Engineering Key Laboratory of Inorganic Chemistry in Universities of Shandong Jining University 273155 Qufu P. R. China
| | - Yunjie Guo
- Department of Chemistry and Chemical Engineering Key Laboratory of Inorganic Chemistry in Universities of Shandong Jining University 273155 Qufu P. R. China
| | - Xuxiao Ma
- Department of Chemistry and Chemical Engineering Key Laboratory of Inorganic Chemistry in Universities of Shandong Jining University 273155 Qufu P. R. China
| | - Zitong Meng
- Department of Chemistry and Chemical Engineering Key Laboratory of Inorganic Chemistry in Universities of Shandong Jining University 273155 Qufu P. R. China
| | - Jingquan Sha
- Department of Chemistry and Chemical Engineering Key Laboratory of Inorganic Chemistry in Universities of Shandong Jining University 273155 Qufu P. R. China
| | - Haifeng Zhang
- Department of Chemistry and Chemical Engineering Key Laboratory of Inorganic Chemistry in Universities of Shandong Jining University 273155 Qufu P. R. China
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Wang Y, Du C, Zhao L, Zhang X, Wang D, Sha J, Zhang H. Two hexanuclear [Co2III-Ln4III] clusters including a [Co2III-Dy4III] single molecule magnet. INORG CHEM COMMUN 2020. [DOI: 10.1016/j.inoche.2020.107913] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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7
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Huang Y, Qin Y, Ge Y, Cui Y, Zhang X, Li Y, Yao J. Rationally assembled nonanuclear lanthanide clusters: Dy9 displays slow relaxation of magnetization and Tb9 serves as luminescent sensor for Fe3+, CrO42− and Cr2O72−. NEW J CHEM 2019. [DOI: 10.1039/c9nj04893f] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The utilization of a Schiff base ligand 2-((2-hydroxy-4-methoxy-benzylideneamino)methyl)phenol (H2L) afforded five nonanuclear lanthanide(iii) clusters. Dy9 displays slow relaxation of magnetization and Tb9 serves as luminescent sensor for Fe3+, CrO42− and Cr2O72−.
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Affiliation(s)
- Yuan Huang
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou
- China
| | - Yaru Qin
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou
- China
| | - Yu Ge
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou
- China
| | - Yanfeng Cui
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou
- China
| | - Xiamei Zhang
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou
- China
| | - Yahong Li
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou
- China
| | - Jinlei Yao
- Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application
- School of Mathematics and Physics
- Suzhou University of Science and Technology
- Suzhou
- China
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8
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Ge Y, Qin Y, Cui Y, Pan Y, Huang Y, Li Y, Liu W, Zhang YQ. Dinuclear Lanthanide Complexes Based on a Schiff-base Ligand: Free Lattice Solvent Inducing the Single Molecule Magnet Behavior of Dy2
Compound. Chem Asian J 2018; 13:3753-3761. [DOI: 10.1002/asia.201801336] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Yu Ge
- College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 China
| | - Yaru Qin
- College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 China
| | - Yanfeng Cui
- College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 China
| | - Yangdan Pan
- College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 China
| | - Yuan Huang
- College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 China
| | - Yahong Li
- College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 China
| | - Wei Liu
- College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 China
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology; Nanjing Normal University; Nanjing 210023 China
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9
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Chen PY, Wu MZ, Li T, Shi XJ, Tian L, Liu ZY. Lanthanide Tetranuclear Cage and Mononuclear Cocrystalline Nitronyl Nitroxide Complex with Single-Molecule-Magnet Behavior. Inorg Chem 2018; 57:12466-12470. [DOI: 10.1021/acs.inorgchem.8b01923] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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10
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Qin Y, Ge Y, Zhang S, Sun H, Jing Y, Li Y, Liu W. A series of Ln4III clusters: Dy4 single molecule magnet and Tb4 multi-responsive luminescent sensor for Fe3+, CrO42−/Cr2O72− and 4-nitroaniline. RSC Adv 2018; 8:12641-12652. [PMID: 35541266 PMCID: PMC9079637 DOI: 10.1039/c8ra01485j] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2018] [Accepted: 03/26/2018] [Indexed: 12/31/2022] Open
Abstract
Five tetranuclear lanthanide clusters were synthesized. Dy4 complex exhibits single molecule magnet (SMM) behavior and Tb4 compound shows sensing properties towards Fe3+, CrO42−, Cr2O72− and 4-nitroaniline (4-NA).
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Affiliation(s)
- Yaru Qin
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Yu Ge
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Shasha Zhang
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Hao Sun
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Yu Jing
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Yahong Li
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Wei Liu
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
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11
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Mistry S, Sutter JP, Natarajan S. Syntheses, Structures, and Magnetic Behavior of New Azide Linked Compounds with One- and Two-Dimensional Structures. Z Anorg Allg Chem 2017. [DOI: 10.1002/zaac.201700286] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Subhradeep Mistry
- Framework Solids Laboratory; Solid State and Structural Chemistry Unit; Indian Institute of Science; 560012 Bangalore India
| | - Jean-Pascal Sutter
- CNRS, LCC (Laboratoire de Chimie de Coordination); 31077 Toulouse France
- UPS, INPT, LCC; Université de Toulouse; 31077 Toulouse France
| | - Srinivasan Natarajan
- Framework Solids Laboratory; Solid State and Structural Chemistry Unit; Indian Institute of Science; 560012 Bangalore India
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12
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Qin Y, Zhang H, Sun H, Pan Y, Ge Y, Li Y, Zhang YQ. Two Series of Homodinuclear Lanthanide Complexes: Greatly Enhancing Energy Barriers through Tuning Terminal Solvent Ligands in Dy 2 Single-Molecule Magnets. Chem Asian J 2017; 12:2834-2844. [PMID: 28840651 DOI: 10.1002/asia.201701065] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Revised: 08/23/2017] [Indexed: 11/10/2022]
Abstract
The utilization of 2-ethoxy-6-{[(2-hydroxy-3-methoxybenzyl)imino]methyl}phenol (H2 L) as a chelating ligand, in combination with the employment of alcohols (EtOH and MeOH) as auxiliary ligands, in 4 f-metal chemistry afforded two series of dinuclear lanthanide complexes of compositions [Ln2 L2 (NO3 )2 (EtOH)2 ] (Ln=Sm (1), Eu (2), Gd (3), Tb (4), Dy (5), Ho (6), Er (7)) and [Ln2 L2 (NO3 )2 (MeOH)2 ] (Ln=Sm (8), Eu (9), Gd (10), Tb (11), Dy (12), Ho (13), Er (14)). The structures of 1-14 were determined by single-crystal X-ray crystallography. Complexes 1-7 are isomorphous. The two lanthanide(III) ions in 1-7 are doubly bridged by two deprotonated aminophenoxide oxygen atoms of two μ2 :η0 :η1 :η2 :η1 :η1 :η0 -L2- ligands. One nitrogen atom, two oxygen atoms of the NO3- anion, two methoxide oxygen atoms of two ligand sets, and one oxygen atom of the terminally coordinated EtOH molecule complete the distorted dodecahedron geometry of each lanthanide(III) ion. Compounds 8-14 are isomorphous and their structures are similar to those of 1-7. The slight difference between 1-7 and 8-14 stems from purposefully replacing the EtOH ligands in 1-7 with MeOH in 8-14. Direct-current magnetic susceptibility studies in the 2-300 K range reveal weak antiferromagnetic interactions for 3, 4, 7, 10, 11, and 14, and ferromagnetic interactions at low temperature for 5, 6, 12, and 13. Complexes 5 and 12 exhibit single-molecule magnet (SMM) behavior with energy barriers of 131.3 K for 5 and 198.8 K for 12. The energy barrier is significantly enhanced by dexterously regulating the terminal ligands. To rationalize the observed difference in the magnetic behavior, complete-active-space self-consistent field (CASSCF) calculations were performed on two Dy2 complexes. Subtle variation in the angle between the magnetic axes and the vector connecting two dysprosium(III) ions results in a weaker influence on the tunneling gap of individual dysprosium(III) ions by the dipolar field in 12. This work proposes an efficient strategy for synthesizing Dy2 SMMs with high energy barriers.
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Affiliation(s)
- Yaru Qin
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P.R. China
| | - Haifeng Zhang
- Department of Chemistry and Chemical Engineering, Jining University, Qufu, 273155, P.R. China
| | - Hao Sun
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P.R. China
| | - Yangdan Pan
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P.R. China
| | - Yu Ge
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P.R. China
| | - Yahong Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, 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
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13
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Bartolomé E, Arauzo A, Luzón J, Bartolomé J, Bartolomé F. Magnetic Relaxation of Lanthanide-Based Molecular Magnets. HANDBOOK OF MAGNETIC MATERIALS 2017. [DOI: 10.1016/bs.hmm.2017.09.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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