1
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Bhunia P, Maity S, Ghosh TK, Mondal A, Mayans J, Ghosh A. Cu(II)-Ln(III) (Ln = Gd, Tb and Dy) complexes of an unsymmetrical N 2O 3 donor ligand: field induced SMM behaviour of Cu(II)-Tb(III) complexes. Dalton Trans 2024; 53:9171-9182. [PMID: 38742576 DOI: 10.1039/d4dt00304g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
Three new hetero-metallic CuII-LnIII complexes [(CuL)Gd(NO3)3(CH3OH)]n (1), [(CuL)Tb(NO3)3(H2O)]·[CuL] (2) and [(CuL)Dy(NO3)3(H2O)]·[CuL] (3) have been synthesized using a mono-nuclear Cu(II) complex, [CuL], of an unsymmetrically di-condensed N2O3 donor Schiff base ligand, N-(3-methoxysalicylidene)-N-(salicylidene)-1,2-ethylenediamine (H2L). Single crystal X-ray crystallography revealed that complex 1 is a nitrate bridged 1D chain of dinuclear Cu(II)-Gd(III) units whereas in 2 and 3, the dinuclear Cu(II)-Ln(III) units are co-crystallized with a [CuL] unit. The Ln(III) centers are nine coordinated with the geometry of a spherical capped square antiprism for Gd and spherical tricapped trigonal prism for Tb and Dy. The geometry of the Cu(II) center is distorted octahedral for complex 1 and distorted square planar for complexes 2 and 3. Temperature-dependent molar magnetic susceptibility measurements in 1-3 revealed the presence of overall ferromagnetic coupling between the Cu(II) and Ln(III) centers. Notably, field induced single-molecule magnet behavior was witnessed in the Tb(III) derivative (2). The ab initio calculations indicated that upon application of an external magnetic field, the tunneling in the ground state of complex 2 gets reduced and thereby field-induced SMM behaviour is observed. Besides, in the case of complex 1, BS-DFT calculations were carried out to gain further insights into the magnetic exchange coupling interactions between the Cu(II) and Gd(III) centers.
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Affiliation(s)
- Pradip Bhunia
- Department of Chemistry, University College of Science, University of Calcutta, 92, A.P.C. Road, Kolkata-700009, India.
| | - Souvik Maity
- Department of Chemistry, University College of Science, University of Calcutta, 92, A.P.C. Road, Kolkata-700009, India.
| | - Tanmoy Kumar Ghosh
- Department of Chemistry, University College of Science, University of Calcutta, 92, A.P.C. Road, Kolkata-700009, India.
| | - Arpan Mondal
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal by-pass road, Bhauri, Bhopal 462066, MP, India
| | - Júlia Mayans
- Departament de Química Inorgànica I Orgànica, SeccióInorgànica and Institut de Nanosciència and Nanotecnologia (IN2UB), MartíiFranqués 1-11, 08028 Barcelona, Spain
| | - Ashutosh Ghosh
- Department of Chemistry, University College of Science, University of Calcutta, 92, A.P.C. Road, Kolkata-700009, India.
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2
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Li XL, Ma Z, Tang J. Recent Developments of Nontraditional Single-Molecule Toroics. Chemistry 2024; 30:e202304369. [PMID: 38414107 DOI: 10.1002/chem.202304369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 02/27/2024] [Accepted: 02/27/2024] [Indexed: 02/29/2024]
Abstract
Single-molecule toroics (SMTs), defined as a type of molecules with toroidal arrangement of magnetic moment associated with bi-stable non-magnetic ground states, are promising candidates for high-density information storage and the development of molecule based multiferroic materials with linear magneto-electric coupling and multiferroic behavior. The design and synthesis of SMTs by arranging the magnetic anisotropy axis in a circular pattern at the molecular level have been of great interest to scientists for last two decades since the first detection of the SMT behavior in the seminal Dy3 molecules. DyIII ion has long been the ideal candidate for constructing SMTs due to its Kramer ion nature as well as high anisotropy. Nevertheless, other LnIII ions such as TbIII and HoIII ions, as well as some paramagnetic transition metal ions, have also been used to construct many nontraditional SMTs. Therefore, we review the progress in the studies of SMTs based on the nontraditional perspective, ranging from the 3D topological to 1D&2D&3D polymeric SMTs, and 3d-4f to non Dy-based SMTs. We hope the understanding we provide about nontraditional SMTs will be helpful in designing novel SMTs.
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Affiliation(s)
- Xiao-Lei Li
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Zhifang Ma
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Jinkui Tang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, P. R. China
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3
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Feng L, Yang Y, Wang YX, Zhao Y, Liu ZY, Cong J, Zhang YQ, Cheng P. Reversible single-crystal to single-crystal transformation between triangular single-molecule toroics. Dalton Trans 2023; 52:16596-16600. [PMID: 37955190 DOI: 10.1039/d3dt03191h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2023]
Abstract
We report a method for synthesizing single-molecule magnets through a single-crystal to single-crystal transformation. This process yields two single-molecule magnets with similar triangular Dy3 cores but distinct solvents and space groups achieved via solvent exchange. Magnetic properties reveal that both Dy3 molecules exhibit similar toroidal moments but manifest diverse multiple magnetization dynamic behaviors owing to the spin-lattice coupling influence from different solvent molecules.
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Affiliation(s)
- Lixi Feng
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, Renewable Energy Conversion and Storage Center and Frontiers Science Center for New Organic Matter, and Haihe Laboratory of Sustainable Chemical transformations (Tianjin), College of Chemistry, Nankai University, Tianjin 300071, China.
| | - Yue Yang
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, Renewable Energy Conversion and Storage Center and Frontiers Science Center for New Organic Matter, and Haihe Laboratory of Sustainable Chemical transformations (Tianjin), College of Chemistry, Nankai University, Tianjin 300071, China.
| | - Yu-Xia Wang
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, Renewable Energy Conversion and Storage Center and Frontiers Science Center for New Organic Matter, and Haihe Laboratory of Sustainable Chemical transformations (Tianjin), College of Chemistry, Nankai University, Tianjin 300071, China.
- College of Chemistry, Tianjin Normal University, Tianjin, 300387, China
| | - Yizhen Zhao
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, Renewable Energy Conversion and Storage Center and Frontiers Science Center for New Organic Matter, and Haihe Laboratory of Sustainable Chemical transformations (Tianjin), College of Chemistry, Nankai University, Tianjin 300071, China.
| | - Zhong-Yi Liu
- College of Chemistry, Tianjin Normal University, Tianjin, 300387, China
| | - Junzhuang Cong
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Yi-Quan Zhang
- Jiangsu Key Lab for NSLSCS, School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, P. R. China
| | - Peng Cheng
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, Renewable Energy Conversion and Storage Center and Frontiers Science Center for New Organic Matter, and Haihe Laboratory of Sustainable Chemical transformations (Tianjin), College of Chemistry, Nankai University, Tianjin 300071, China.
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4
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Wang H, Zhu Z, La Droitte L, Liao W, Cador O, Le Guennic B, Tang J. Toroidal moment and dynamical control in luminescent 1D and 3D terbium calixarene compounds. Chem Sci 2023; 14:7208-7214. [PMID: 37416717 PMCID: PMC10321477 DOI: 10.1039/d3sc00541k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 06/05/2023] [Indexed: 07/08/2023] Open
Abstract
A toroidal moment can be generated spontaneously in inorganic (atom-based) ferrotoroidic materials that breaks both time-reversal and space-inversion symmetries, attracting great attention in solid-state chemistry and physics. In the field of molecular magnetism, it can also be achieved in lanthanide (Ln) involved metal-organic complexes usually with a wheel-shaped topological structure. Such complexes are called single-molecule toroics (SMTs), presenting unique advantages in spin chirality qubits and magnetoelectric coupling. However, to date, the synthetic strategies of SMTs have remained elusive, and the covalently bonded three-dimensional (3D) extended SMT has not hitherto been synthesized. Here, two luminescent Tb(iii)-calixarene aggregates with architectures of 1D chain (1) and 3D network (2) both containing the square Tb4 unit have been prepared. Their SMT characteristics deriving from the toroidal arrangement of the local magnetic anisotropy axes of Tb(iii) ions in the Tb4 unit have been investigated experimentally with the support of ab initio calculations. To the best of our knowledge, 2 is the first covalently bonded 3D SMT polymer. Remarkably, solvato-switching of SMT behavior has also been achieved for the first time by desolvation and solvation processes of 1.
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Affiliation(s)
- Hao Wang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun 130022 China
- School of Applied Chemistry and Engineering, University of Science and Technology of China Hefei 230026 China
| | - Zhenhua Zhu
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun 130022 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Léo La Droitte
- Univ. Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226 Rennes F-35000 France
| | - Wuping Liao
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun 130022 China
- School of Applied Chemistry and Engineering, University of Science and Technology of China Hefei 230026 China
- Ganjiang Innovation Academy, Chinese Academy of Sciences Ganzhou 341000 China
| | - Olivier Cador
- Univ. Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226 Rennes F-35000 France
| | - Boris Le Guennic
- Univ. Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226 Rennes F-35000 France
| | - Jinkui Tang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun 130022 China
- School of Applied Chemistry and Engineering, University of Science and Technology of China Hefei 230026 China
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5
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Yang ZX, Liang XW, Lin D, Zheng Q, Huo Y. Heteroatom-Modulated Assembly of Hexalanthanoid-Containing Polyoxometalate-Based Coordination Networks. Inorg Chem 2023; 62:1466-1475. [PMID: 36656113 DOI: 10.1021/acs.inorgchem.2c03561] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Two series of lanthanoid (Ln)-containing polyoxometalates (POMs) {[Ln6(ampH)4(H2O)24-n(ampH2)n(PW11O39)2]·21H2O (Ln = Tb, n = 0 (1), Ln = Er, n = 1 (2)) and K2[Ln6(ampH)4(H2O)22(SiW11O39)2]·23H2O (Ln = Tb (3), Er (4)) (ampH2 = (aminomethyl) phosphonic acid)} have been synthesized with tri-lacunary Keggin-type POMs containing different types of heteroatoms. Compounds 1 and 2 display neutral organic-inorganic hybrid POM molecules containing {Ln6(ampH)4} ({Ln6}) cores sandwiched by two {PW11O39} units. By changing the heteroatoms from PV to SiIV, the extended 2D networks of 3 and 4 were successfully isolated where the adjacent {Ln6} clusters were connected by {SiW11O39} moieties. Luminescence performances and magnetic properties of 1-4 have been systematically surveyed. The solid-state fluorescence spectra of 1-4 display characteristic emissions of Ln components resulting from the 4f-4f transitions, and energy transfer from the POM segments to Ln3+ centers in 1 and 3 has been observed based on the lifetime decay behaviors. Furthermore, all compounds can be utilized as electrocatalysts toward reduction of nitrite with high stability.
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Affiliation(s)
- Zeng-Xi Yang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, P. R. China
| | - Xue-Wei Liang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, P. R. China
| | - Dunmin Lin
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, P. R. China
| | - Qiaoji Zheng
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, P. R. China
| | - Yu Huo
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, P. R. China
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6
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Mandal S, Pramanik A, Dey S, Carrella LM, Rajaraman G, Rentschler E, Mohanta S. Experimental and theoretical investigations on three Dy III4 single molecule magnets: structural and magneto-structural correlations. Dalton Trans 2022; 51:14753-14766. [PMID: 36106563 DOI: 10.1039/d2dt02348b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The work in this report describes the syntheses, crystal structures, dc/ac magnetic behaviour, and theoretical calculations (both ab initio CASSCF and DFT) of three defect dicubane/planar butterfly type tetradysprosium(III) compounds of compositions [DyIII4L4(μ3-OH)2(carboxylate)2(dmf)2] (carboxylate = formate (1), acetate (2), propionate (3)), where H2L = 2-(2-hydroxy-3-ethoxybenzylideneamino)phenol. In the butterfly type structures, two DyIII centres (Dyb) occupy the body positions while two other (Dyw) units occupy the wing positions. SHAPE analyses reveal that the coordination geometries of the Dyb and Dyw centres, both octacoordinated, are triangular dodecahedron (TDD) and square antiprism (SAPR), respectively. Variable-temperature magnetic susceptibility measurements give an indication of weak antiferromagnetic interactions and variable-field magnetization measurements reveal strong anisotropy in all the three compounds. The variable-temperature/frequency in-phase/out-of-phase AC susceptibility data reveal that all these three compounds are SMMs with two relaxation channels under zero dc field; slow relaxation (SR) and fast relaxation (FR) processes could be assigned to the SAPR (Dyw) and TDD (Dyb) metal centres, respectively. The simulated Ueff and τ0 values are: 49.0 cm-1 and 1.76 × 10-7 s for 1, 30.3 cm-1 and 1.51 × 10-8 s for 2 and 23.4 cm-1 and 9.64 × 10-7 s for 3. Furthermore, ab initio CASSCF/RASSI-SO/SINGLE_ANISO calculations reveal that the ground state of DyIII centres are axial in nature with a dominating contribution from mJ = |±15/2>. The magnetization relaxation occurs via the first excited KD resulting in the large computed blocking barrier of Dyw (SAPR) centres compared to that of the Dyb (TDD) centres which corroborates the experimental measurements. The exchange parameters obtained from DFT calculations are generally in line with those obtained from the fitting of χMT vs. T in POLY_ANISO calculations. Interesting structural and magneto-structural correlations have been found, which are the major outcomes of this investigation.
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Affiliation(s)
- Shuvankar Mandal
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700 009, India.
| | - Abhishek Pramanik
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700 009, India.
| | - Sourav Dey
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Luca M Carrella
- Department of Chemistry, Johannes-Gutenberg University Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany.
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Eva Rentschler
- Department of Chemistry, Johannes-Gutenberg University Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany.
| | - Sasankasekhar Mohanta
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700 009, India.
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7
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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] [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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8
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Mahato S, Mondal A, Das M, Joshi M, Ray PP, Roy Choudhury A, Reddy CM, Biswas B. De novo synthesis of hybrid d-f block metal complex salts for electronic charge transport applications. Dalton Trans 2022; 51:1561-1570. [PMID: 34989731 DOI: 10.1039/d1dt02722k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The advent of d-d type complex salts for designing smart functional materials with versatile utility inspired us to develop a novel type of M(II)-Ce(IV) complex salts [M(II) = Cu and Zn ions]. In this study, we present for the first time a holistic approach to design and prepare metal complex salts of the novel hybrid d-f block type, [Cu(bpy)2]2[Ce(NO3)6]2 (1), [Cu(phen)2(NO3)]2[Ce(NO3)6](HNO3) (2), [Zn(bpy)2(NO3)][ClO4] (3), and [Zn(phen)2(NO3)]2 [Ce(NO3)6] (4); [bpy = 2,2'-bipyridine; phen = 1,10-phenanthroline]. The intrinsic structural and morphological properties of the compounds have been revealed by employing a suite of analytical and spectroscopic methods. X-ray structural analysis reveals that the copper(II) centres in the cationic complex units of 1 and 2 adopt a highly distorted tetrahedral and a rare bicapped square pyramidal coordination geometry, respectively. The zinc(II) ions in both 3 and 4 adopt the rare bicapped square pyramidal geometry while the cerium(IV) ions in 1, 2 and 4 exist in a dodecahedral geometry. Investigation of supramolecular interactions reveals that intermolecular O⋯H and O⋯π short contacts bind the complex units in 1, while predominant π⋯π interactions, along with O⋯H and O⋯π short contacts, produce the binding force among the complex units in 2. We further employed the complex salts (1-4) to construct Schottky devices to reveal the role of these new complex salts in the charge-transport phenomenon. The carrier mobilities (μ) for salts 1-4 were determined to be 1.76 × 10-6, 9.02 × 10-6, 1.86 × 10-8, and 4.31 × 10-8 m2 V-1 s-1, with respective transit times (τ) of 439, 85, 4.17 × 103, and 1.79 × 103 ns, which suggest that complex salt 2 is the best candidate with the highest transport properties among all the complex salts. A crystal engineering perspective sheds light on the charge-transport properties of the complex salts, emphasizing the attribution of the best performance of 2 to its predominant π⋯π interactions. The synthesis of this new type of complex salts, their physicochemical properties and their charge-transport applications envisage great promise for the development of novel crystalline materials with smart functionalities.
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Affiliation(s)
- Shreya Mahato
- Department of Chemistry, University of North Bengal, Darjeeling 734013, India.
| | - Amit Mondal
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Nadia 741246, India
| | - Mainak Das
- Department of Physics, Jadavpur University, Kolkata 700032, India
| | - Mayank Joshi
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli PO, Mohali, Punjab 140306, India
| | | | - Angshuman Roy Choudhury
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli PO, Mohali, Punjab 140306, India
| | - C Malla Reddy
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Nadia 741246, India
| | - Bhaskar Biswas
- Department of Chemistry, University of North Bengal, Darjeeling 734013, India.
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9
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Yang Q, Ungur L, Wernsdorfer W, Tang J. Toroidal magnetic moments in Tb4 squares. Inorg Chem Front 2022. [DOI: 10.1039/d1qi01459e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of Tb4 complexes isolated from reduced or dimerized Schiff base ligand share a similar µ4-O bridged Tb4 square core with the magnetic moments of the TbIII ions in...
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10
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Wu J, Demeshko S, Dechert S, Meyer F. Macrocycle based dinuclear dysprosium(III) single molecule magnets with local D5h coordination geometry. Dalton Trans 2021; 50:17573-17582. [PMID: 34806736 DOI: 10.1039/d1dt02815d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Targeted approaches for manipulating the coordination geometry of lanthanide ions are a promising way to synthesize high-performance single-molecule magnets (SMMs), but most of the successful examples reported to date focus on mononuclear complexes. Herein, we describe a strategy to assemble dinuclear SMMs with DyIII ions in approximate D5h coordination geometry based on pyrazolate-based macrocyclic ligands with two binding sites. A Dy4 complex with a rhomb-like arrangement of four DyIII as well as two dinuclear complexes having axial chlorido ligands (Dy2·Cl and Dy2*·Cl) were obtained; in the latter case, substituting Cl- by SCN- gave Dy2·SCN. Magneto-structural studies revealed that the μ-OH bridges with short Dy-O bonds dominate the magnetic anisotropy of the DyIII ions in centrosymmetric Dy4 to give a vortex type diamagnetic ground state. Dynamic magnetic studies of Dy4 identified two relaxation processes under zero field, one of which is suppressed after applying a dc field. For complexes Dy2·Cl and Dy2*·Cl, the DyIII ions feature almost perfect D5h environment, but both complexes only behave as field-induced SMMs (Ueff = 19 and 25 K) due to the weak axial Cl- donors. In Dy2·SCN additional MeOH coordination leads to a distorted D2d geometry of the DyIII ions, yet SMMs properties at zero field are observed due to the relatively strong axial ligand field provided by SCN- (Ueff = 43 K). Further elaboration of preorganizing macrocyclic ligands appears to be a promising strategy for imposing a desired coordination geometry with parallel orientation of the anisotropy axes of proximate DyIII ions in a targeted approach.
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Affiliation(s)
- Jianfeng Wu
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstr. 4, D-37077 Göttingen, Germany. .,School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, P. R. China
| | - Serhiy Demeshko
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstr. 4, D-37077 Göttingen, Germany.
| | - Sebastian Dechert
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstr. 4, D-37077 Göttingen, Germany.
| | - Franc Meyer
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstr. 4, D-37077 Göttingen, Germany.
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11
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Vignesh KR, Rajaraman G. Strategies to Design Single-Molecule Toroics Using Triangular {Ln 3} n Motifs. ACS OMEGA 2021; 6:32349-32364. [PMID: 34901588 PMCID: PMC8655769 DOI: 10.1021/acsomega.1c05310] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 11/12/2021] [Indexed: 06/14/2023]
Abstract
In this mini-review, we highlight the research advanced in the field of single-molecule toroics (SMTs) with a specific focus on the triangular Ln3-based SMTs. SMTs are molecules with a toroidal magnetic state and are insensitive to homogeneous magnetic fields but cooperate with charge and spin currents. The rapid growth in the area of SMTs witnessed in recent years is correlated not only to the interest to understand the fundamental physics of these molecules but also to the intriguing potential applications proposed, as the SMTs have several advantages compared to other classes of molecules such as single-molecule magnets (SMMs). The important chemico-structural strategy in SMT chemistry is to choose and design ligand and bridging species that will help to attain toroidal behavior. Considering this primarily, all the Dy3 SMTs reported so far are summarized, showing how utilizing different peripheral ligands influences the toroidal nature beyond the role of the symmetry of the molecule and stronger dipolar interactions. Likewise, linking Dy3 toroidal units through 3d ions with suitable peripheral/bridging ligands enhances the toroidal magnetic moment and leads to fascinating physics of ferrotoroidal/antiferrotoridal behavior. Further, we have also summarized the recently reported non-Dy triangular SMTs.
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12
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Wang HS, Zhang K, Song Y, Pan ZQ. Recent advances in 3d-4f magnetic complexes with several types of non-carboxylate organic ligands. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120318] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Yin JJ, Lu TQ, Chen C, Shi HY, Zhuang GL, Zheng J, Fang X, Zheng XY. A new family of decanuclear Ln 7Cr 3 clusters exhibiting a magnetocaloric effect. RSC Adv 2021; 11:17346-17351. [PMID: 35479672 PMCID: PMC9033162 DOI: 10.1039/d1ra02734d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 05/05/2021] [Indexed: 01/16/2023] Open
Abstract
Two dimeric Ln–Cr clusters with formula {Ln(H2O)8[Ln6Cr3(L)6(CH3COO)6(μ3-OH)12(H2O)12]}·(ClO4)6·xH2O (Ln = Gd, x = 35 for 1 and Ln = Dy, x = 45 for 2, HL = 2-pyrazinecarboxylic acid) were obtained by a ligand-controlled hydrolytic method with a mixed ligand system (2-pyrazinecarboxylic acid and acetate). Single crystal structure analysis showed that two trigonal bipyramids of [Gd3Cr2(μ3-OH)6]9+ worked as building blocks in constructing the metal-oxo cluster core of [Gd6Cr3(μ3-OH)12]15+ by sharing a common top – a Cr3+ ion. Additionally, compound 1 forms a three-dimensional framework with a one-dimensional nanopore channel along the a-axis through a hydrogen-bond interaction between the cationic cluster core and the free mononuclear cation [Gd(H2O)8]3+ and the π-bond interactions of the pyrazine groups on the two cationic cluster cores. Magnetic calculations indicated a weak ferromagnetic coupling interaction for Gd⋯Gd and Gd⋯Cr in compound 1, with its magnetic entropy change (−ΔSm) reaching 21.1 J kg−1 K−1 at 5 K, 7 T, while compound 2 displayed an obvious frequency-dependency at Hdc = 2000 Oe. Two decanuclear Ln–Cr clusters Ln7Cr3 were obtained, which formed a three-dimensional framework with one-dimensional nanopore channel through hydrogen-bond and π-bond interactions. Gd7Cr3 had a magnetic entropy change of 21.1 J kg−1 K−1 at 5 K, 7 T.![]()
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Affiliation(s)
- Jia-Jia Yin
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Photoelectric Conversion Energy Materials and Devices Key Laboratory of Anhui Province, Anhui University Hefei 230601 China
| | - Tian-Qi Lu
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Photoelectric Conversion Energy Materials and Devices Key Laboratory of Anhui Province, Anhui University Hefei 230601 China
| | - Cheng Chen
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Photoelectric Conversion Energy Materials and Devices Key Laboratory of Anhui Province, Anhui University Hefei 230601 China
| | - Hai-Yan Shi
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University Xiamen 361005 China
| | - Gui-Lin Zhuang
- College of Chemical Engineering, Zhejiang University of Technology Hangzhou 310032 China
| | - Jun Zheng
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Photoelectric Conversion Energy Materials and Devices Key Laboratory of Anhui Province, Anhui University Hefei 230601 China
| | - Xiaolong Fang
- College of Materials and Chemical Engineering, Anhui Jianzhu University Hefei 230601 China
| | - Xiu-Ying Zheng
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Photoelectric Conversion Energy Materials and Devices Key Laboratory of Anhui Province, Anhui University Hefei 230601 China .,State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University Xiamen 361005 China
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14
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A potential ferromagnetic lanthanide‒transition heterometallic molecular‒based bacteriostatic agent. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129783] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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15
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Ashtree JM, Borilović I, Vignesh KR, Swain A, Hamilton SH, Whyatt YL, Benjamin SL, Phonsri W, Forsyth CM, Wernsdorfer W, Soncini A, Rajaraman G, Langley SK, Murray KS. Tuning the Ferrotoroidic Coupling and Magnetic Hysteresis in Double‐Triangle Complexes {Dy
3
M
III
Dy
3
} via the M
III
‐linker. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202001082] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Jared M. Ashtree
- School of Chemistry University of Melbourne Parkville VIC 3010 Australia
| | - Ivana Borilović
- School of Chemistry Monash University, Building 23 17 Rainforest Walk Clayton VIC 3800 Australia
| | - Kuduva R. Vignesh
- Department of Chemistry Indian Institute of Technology Bombay, Powai Mumbai Maharashtra 400 076 India
| | - Abinash Swain
- Department of Chemistry Indian Institute of Technology Bombay, Powai Mumbai Maharashtra 400 076 India
| | - Sarah H. Hamilton
- School of Science and the Environment Division of Chemistry Manchester Metropolitan University Manchester UK
| | - Yasmin L. Whyatt
- School of Science and the Environment Division of Chemistry Manchester Metropolitan University Manchester UK
| | - Sophie L. Benjamin
- School of Science and Technology Nottingham Trent University Nottingham NG11 8NS UK
| | - Wasinee Phonsri
- School of Chemistry Monash University, Building 23 17 Rainforest Walk Clayton VIC 3800 Australia
| | - Craig M. Forsyth
- School of Chemistry Monash University, Building 23 17 Rainforest Walk Clayton VIC 3800 Australia
| | - Wolfgang Wernsdorfer
- Institute of Quantum Materials and Technologies Karlsruhe Institute of Technology 76344 Eggenstein-Leopoldshafen Germany
| | - Alessandro Soncini
- School of Chemistry University of Melbourne Parkville VIC 3010 Australia
| | - Gopalan Rajaraman
- Department of Chemistry Indian Institute of Technology Bombay, Powai Mumbai Maharashtra 400 076 India
| | - 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, Building 23 17 Rainforest Walk Clayton VIC 3800 Australia
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16
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Caporale C, Sobolev AN, Phonsri W, Murray KS, Swain A, Rajaraman G, Ogden MI, Massi M, Fuller RO. Lanthanoid pyridyl-β-diketonate 'triangles'. New examples of single molecule toroics. Dalton Trans 2020; 49:17421-17432. [PMID: 33220677 DOI: 10.1039/d0dt02855j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Trinuclear lanthanoid clusters have been synthesised and investigated as toroidal spin systems. A pyridyl functionalised β-diketonate, 1,3-bis(pyridin-2-yl)propane-1,3-dione (o-dppdH) has been used to synthesise a family of clusters of the form [Dy3(OH)2(o-dppd)3Cl2(H2O)4]Cl2·7H2O (1), [Tb3(o-dppd)3(μ3-OH)2(CH3CH2OH)3Cl3][Tb3(o-dppd)3(μ3-OH)2(H2O)(CH3CH2OH)2Cl3]Cl2·H2O (2), [Ho3(OH)2(o-dppd)3Cl(H2O)5]Cl3·3H2O (3) and [Er3(OH)2(o-dppd)3Cl2(H2O)3(CH3OH)]Cl2·3H2O·CH3OH (4). Despite the previous occurrence of this structural motif in the literature, these systems have not been widely investigated in terms of torodic behaviour. Magnetic studies were used to further characterise the complexes. DC susceptibility studies support weak antiferromagnetic exchange in the complexes. Slow magnetic relaxation behaviour is observed in the dynamic AC magnetic studies for complex 1. Theoretical studies predict that complex 1 and 3 have a non-magnetic ground state based on a toroidal arrangement of spins. Changes to the coordination environment in 2 do not support a toroic spin state. The prolate nature of the ErIII centres in complex 4 and large transverse anisotropy do not support the toroidal arrangement of lanthanoid spins in the complex.
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Affiliation(s)
- Chiara Caporale
- School of Molecular and Life Sciences, Curtin University, Bentley, WA 6102, Australia
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17
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Bazhina ES, Kiskin MA, Korlyukov AA, Babeshkin KA, Efimov NN, Shmelev MA, Kottsov SY, Khoroshilov AV, Ugolkova EA, Starikova AA, Korchagin DV, Minin VV, Eremenko IL. Barium(II)–Chromium(III) Coordination Polymers Based on Dimethylmalonate Anions: Synthesis, Crystal Structure, Magnetic Properties, and EPR Spectra. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000630] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Evgeniya S. Bazhina
- Kurnakov Institute of General and Inorganic Chemistry the Russian Academy of Sciences Leninskiy prosp. 31 119991 Moscow Russian Federation
| | - Mikhail A. Kiskin
- Kurnakov Institute of General and Inorganic Chemistry the Russian Academy of Sciences Leninskiy prosp. 31 119991 Moscow Russian Federation
| | - Alexander A. Korlyukov
- Nesmeyanov Institute of Organoelement Compounds the Russian Academy of Sciences Vavilova st. 28 119991 Moscow Russian Federation
| | - Konstantin A. Babeshkin
- Kurnakov Institute of General and Inorganic Chemistry the Russian Academy of Sciences Leninskiy prosp. 31 119991 Moscow Russian Federation
| | - Nikolay N. Efimov
- Kurnakov Institute of General and Inorganic Chemistry the Russian Academy of Sciences Leninskiy prosp. 31 119991 Moscow Russian Federation
| | - Maxim A. Shmelev
- Kurnakov Institute of General and Inorganic Chemistry the Russian Academy of Sciences Leninskiy prosp. 31 119991 Moscow Russian Federation
| | - Sergey Yu. Kottsov
- Kurnakov Institute of General and Inorganic Chemistry the Russian Academy of Sciences Leninskiy prosp. 31 119991 Moscow Russian Federation
| | - Andrey V. Khoroshilov
- Kurnakov Institute of General and Inorganic Chemistry the Russian Academy of Sciences Leninskiy prosp. 31 119991 Moscow Russian Federation
| | - Elena A. Ugolkova
- Kurnakov Institute of General and Inorganic Chemistry the Russian Academy of Sciences Leninskiy prosp. 31 119991 Moscow Russian Federation
| | - Alyona A. Starikova
- Institute of Physical and Organic Chemistry Southern Federal University prosp. Stachki 194/2 344090 Rostov‐on‐Don Russian Federation
| | - Denis V. Korchagin
- Institute of Problems of Chemical Physics the Russian Academy of Sciences Ac. Semenov prosp. 1 142432 Chernogolovka Moscow region Russian Federation
| | - Vadim V. Minin
- Kurnakov Institute of General and Inorganic Chemistry the Russian Academy of Sciences Leninskiy prosp. 31 119991 Moscow Russian Federation
| | - Igor L. Eremenko
- Kurnakov Institute of General and Inorganic Chemistry the Russian Academy of Sciences Leninskiy prosp. 31 119991 Moscow Russian Federation
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18
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Zhu ZH, Wang HF, Yu S, Zou HH, Wang HL, Yin B, Liang FP. Substitution Effects Regulate the Formation of Butterfly-Shaped Tetranuclear Dy(III) Cluster and Dy-Based Hydrogen-Bonded Helix Frameworks: Structure and Magnetic Properties. Inorg Chem 2020; 59:11640-11650. [PMID: 32799502 DOI: 10.1021/acs.inorgchem.0c01496] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The generation of two types of complexes with different topological connections and completely different structural types merely via the substitution effect is extremely rare, especially for -CH3 and -C2H5 substituents with similar physical and chemical properties. Herein, we used 3-methoxysalicylaldehyde, 1,2-cyclohexanediamine, and Dy(NO3)3·6H2O to react under solvothermal conditions (CH3OH:CH3CN = 1:1) at 80 °C to obtain the butterfly-shaped tetranuclear DyIII cluster [Dy4(L1)4(μ3-O)2(NO3)2] (Dy4, H2L1 = 6,6'-((1E,1'E)-(cyclohexane-1,3-diylbis(azanylylidene))bis(methanylylidene))bis(2-methoxyphenol)). The ligand H2L1 was obtained by the Schiff base in situ reaction of 3-methoxysalicylaldehyde and 1,2-cyclohexanediamine. In the Dy4 structure, (L1)2- has two different coordination modes: μ2-η1:η2:η1:η1 and μ4-η1:η2:η1:η1:η2:η1. The four DyIII ions are in two coordination environments: N2O6 (Dy1) and O9 (Dy2). The magnetic testing of cluster Dy4 without the addition of an external field revealed that it exhibited a clear frequency-dependent behavior. We changed 3-methoxysalicylaldehyde to 3-ethoxysalicylaldehyde and obtained one case of a hydrogen-bonded helix framework, [DyL2(NO3)3]n·2CH3CN (Dy-HHFs, H2L2 = 6,6'-((1E,1'E)-(cyclohexane-1,3-diylbis(azanylylidene))bis(methanylylidene))bis(2-ethoxyphenol)), under the same reaction conditions. The ligand H2L2 was formed by the Schiff base in situ reaction of 3-ethoxysalicylaldehyde and 1,2-cyclohexanediamine. All DyIII ions in the Dy-HHFs structure are in the same coordination environment (O9). The twisted S-shaped (L2)2- ligand is linked by a Dy(III) ion to form a spiral chain. The spiral chain is one of the independent units that is interconnected to form Dy-HHFs through three strong hydrogen-bonding interactions. Magnetic studies show that Dy-HHFs exhibits single-ion-magnet behavior (Ueff = 68.59 K and τ0 = 1.10 × 10-7 s, 0 Oe DC field; Ueff = 131.5 K and τ0 = 1.22 × 10-7 s, 800 Oe DC field). Ab initio calculations were performed to interpret the dynamic magnetic performance of Dy-HHFs, and a satisfactory consistency between theory and experiment exists.
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Affiliation(s)
- Zhong-Hong Zhu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Science, Guangxi Normal University, Guilin 541004, People's Republic of China
| | - Hui-Feng Wang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Science, Guangxi Normal University, Guilin 541004, People's Republic of China
| | - Shui Yu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Science, Guangxi Normal University, Guilin 541004, People's Republic of China
| | - Hua-Hong Zou
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Science, Guangxi Normal University, Guilin 541004, People's Republic of China
| | - Hai-Ling Wang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Science, Guangxi Normal University, Guilin 541004, People's Republic of China
| | - Bing Yin
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xian 710069 People's Republic of China
| | - Fu-Pei Liang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Science, Guangxi Normal University, Guilin 541004, People's Republic of China.,Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, People's Republic of China
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19
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García-Valdivia AA, Cepeda J, Fernández B, Medina-O'donnell M, Oyarzabal I, Parra J, Jannus F, Choquesillo-Lazarte D, García JA, Lupiáñez JA, Gómez-Ruiz S, Reyes-Zurita F, Rodríguez-Diéguez A. 5-Aminopyridine-2-carboxylic acid as appropriate ligand for constructing coordination polymers with luminescence, slow magnetic relaxation and anti-cancer properties. J Inorg Biochem 2020; 207:111051. [PMID: 32371293 DOI: 10.1016/j.jinorgbio.2020.111051] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 02/23/2020] [Accepted: 03/02/2020] [Indexed: 11/27/2022]
Abstract
Five new coordination polymers (CPs) constructed of aminopyridine-2-carboxylate (ampy) ligand have been synthesized and fully characterized. Three of them correspond to metal-organic chains built from the coordination of ampy to sodium and lanthanides with formulae [MNa(ampy)4]n (M = terbium (2), erbium (1) and ytterbium (3)) resembling a previously reported dysprosium material which shows anticancer activity. On another level, the reaction of Hampy with cobalt and copper ions ({[CoK(ampy)3(H2O)3](H2O)3}n (4) and [Cu(ampy)2]n (5)) lead to CPs with variable dimensionalities, which gives the opportunity of analyzing the structural properties of this new family. Lanthanide materials display solid state intense photoluminescent emissions in both the visible and near-infrared region and exhibit slow relaxation of magnetization with frequency dependence of the out-of-phase susceptibility. More interestingly, in our search for multifunctional materials, we have carried out antitumor measurements of these compounds. These multidisciplinary studies of metal complexes open up the possibility for further exploring the applications in the fields of metal-based drugs.
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Affiliation(s)
| | - Javier Cepeda
- Department of Applied Chemistry, Faculty of Chemistry, University of The Basque Country UPV/EHU, Paseo Manuel Lardizabal 3, 20018 Donostia-San Sebastián, Spain
| | - Belén Fernández
- Institute of Parasitology and Biomedicine "López-Neyra", CSIC, Av. Conocimiento s/n, 18600 Granada, Spain.
| | | | - Itziar Oyarzabal
- Department of Applied Chemistry, Faculty of Chemistry, University of The Basque Country UPV/EHU, Paseo Manuel Lardizabal 3, 20018 Donostia-San Sebastián, Spain
| | - Jerónimo Parra
- Department of Inorganic Chemistry, University of Granada, 18071 Granada, Spain
| | - Fatin Jannus
- Dept. of Biochemistry and Molecular Biology I, Severo Ochoa s/n, University of Granada, 18071 Granada, Spain
| | - Duane Choquesillo-Lazarte
- Laboratorio de Estudios Cristalográficos, IACT (CSIC-UGR), Avda. de las Palmeras 4, 18100 Armilla, Granada, Spain
| | - José A García
- Departmento de Física Aplicada II, Facultad de Ciencia y Tecnología, Universidad del País Vasco (UPV/EHU), 48940 Leioa, Spain
| | - José Antonio Lupiáñez
- Dept. of Biochemistry and Molecular Biology I, Severo Ochoa s/n, University of Granada, 18071 Granada, Spain
| | - Santiago Gómez-Ruiz
- Department of Biology and Geology, Physics and Inorganic Chemistry, E.S.C.E.T., Rey Juan Carlos University, c/ Tulipán s/n, 28933 Móstoles, Spain
| | - Fernando Reyes-Zurita
- Dept. of Biochemistry and Molecular Biology I, Severo Ochoa s/n, University of Granada, 18071 Granada, Spain.
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20
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Wang HS, Chen Y, Hu ZB, Zhang K, Zhang Z, Song Y, Pan ZQ. Modulating the structural topologies and magnetic relaxation behaviour of the Mn–Dy compounds by using different auxiliary organic ligands. NEW J CHEM 2020. [DOI: 10.1039/d0nj03838e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A MnIII4DyIII complex and a one-dimensional chain containing MnIII2DyIII units have been obtained by using different combinations of organic ligands, and a slow magnetic relaxation behavior was observed for both complexes.
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Affiliation(s)
- Hui-Sheng Wang
- School of Chemistry and Environmental Engineering
- Key Laboratory of Green Chemical Process of Ministry of Education
- Key Laboratory of Novel Reactor and Green Chemical Technology of Hubei Province
- Wuhan Institute of Technology
- Wuhan 430074
| | - Yong Chen
- School of Chemistry and Environmental Engineering
- Key Laboratory of Green Chemical Process of Ministry of Education
- Key Laboratory of Novel Reactor and Green Chemical Technology of Hubei Province
- Wuhan Institute of Technology
- Wuhan 430074
| | - Zhao-Bo Hu
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Advanced Microstructures
- Nanjing University
- Nanjing 210046
| | - Ke Zhang
- School of Chemistry and Environmental Engineering
- Key Laboratory of Green Chemical Process of Ministry of Education
- Key Laboratory of Novel Reactor and Green Chemical Technology of Hubei Province
- Wuhan Institute of Technology
- Wuhan 430074
| | - Zaichao Zhang
- Jiangsu Key Laboratory for the Chemistry of Low-dimensional Materials
- College of Chemistry and Chemical Engineering
- Huaiyin Normal University
- Huai’an 223300
- P. R. China
| | - You Song
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Advanced Microstructures
- Nanjing University
- Nanjing 210046
| | - Zhi-Quan Pan
- School of Chemistry and Environmental Engineering
- Key Laboratory of Green Chemical Process of Ministry of Education
- Key Laboratory of Novel Reactor and Green Chemical Technology of Hubei Province
- Wuhan Institute of Technology
- Wuhan 430074
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21
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Mo KQ, Zhu ZH, Wang HL, Ma XF, Peng JM, Zou HH, Bai J, Liang FP. Substituents lead to differences in the formation of two different butterfly-shaped NiDy clusters: structures and multistep assembly mechanisms. Dalton Trans 2019; 48:16641-16649. [PMID: 31660548 DOI: 10.1039/c9dt03795k] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The most effective way to understand reaction mechanisms and kinetics is to identify the reaction intermediates and determine the possible reaction patterns. The influencing factors that must be considered in the self-assembly of clusters are the type of ligand, metal ion, coordination anion and the pH of the solution. However, changes in ligand substituents resulting in different self-assembly processes to obtain different types of structures are still very rare, especially with -H and -CH3 substituents, which do not exert significant steric hindrance effects. In this study, planar mononuclear Ni(L1)2 (L1 = 2-ethoxy-6-(iminomethyl)phenol) was dissolved in methanol and combined with Dy(NO3)3·6H2O for 48 h at room temperature to obtain a butterfly-like Ni2Dy2 cluster ([Dy2Ni2(L1)4(CH3O)2(NO3)4], 1). The Dy(iii) ions in cluster 1 are in an O8N coordination environment, and the Ni(ii) ions are in an O5N coordination environment. High-resolution electrospray ionization mass spectrometry (HRESI-MS) was used to track species changes during the formation of cluster 1. Six key intermediate fragments were screened, and the self-assembly mechanism was proposed as Ni(L1)2→ HL1 + NiL1→ DyL1/Ni(L1)2'→ DyNi(L1)2→ Dy2Ni2(L1)4. Through this assembly mechanism, we found that Ni(L1)2 was first cleaved into HL1 + NiL1 and then further assembled to obtain 1. Another butterfly-like tetranuclear heterometallic cluster ([Dy2Ni2(L2)4(CH3O)2(NO3)4], 2) was obtained using planar mononuclear Ni(L2)2 (L2 = (E)-2-ethoxy-6-((methylimino)methyl)phenol) with -CH3 substitution on the nitrogen atom under the same reaction conditions. The structural analysis of cluster 2 showed that the Dy(iii) ions are in an O9 coordination environment, and the Ni(ii) ions are in an O4N2 coordination environment. HRESI-MS was used to trace species changes during the formation of 2, and the assembly mechanism was proposed as Ni(L2)2→ DyNi(L2)2→ Dy2Ni(L2)2→ Dy2Ni2(L2)4. Analysis of the assembly mechanism of 2 showed that Ni(L2)2 was twisted during the reaction, and its coordination point was exposed to capture the Dy(iii) ions. Finally, Dy(NO3)3·6H2O was replaced with NaN3 to obtain a [Ni2Na2(L2)4(N3)4] cluster (3) under the same reaction conditions and verify the above-mentioned torsion step. HRESI-MS was also used to trace the assembly process, and the assembly mechanism was proposed as Ni(L2)2→ NiNa(L2)2→ NiNa2(L2)2→ Ni2Na2(L2)4. Herein, the effect of interference from substitution and the regulation self-assembly process were discovered in the formation of 3d-4f heterometallic clusters, and different types of coordination clusters were obtained.
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Affiliation(s)
- Kai-Qiang Mo
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Pharmacy of Guangxi Normal University, Guilin 541004, P. R. China.
| | - Zhong-Hong Zhu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Pharmacy of Guangxi Normal University, Guilin 541004, P. R. China.
| | - Hai-Ling Wang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Pharmacy of Guangxi Normal University, Guilin 541004, P. R. China.
| | - Xiong-Feng Ma
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Pharmacy of Guangxi Normal University, Guilin 541004, P. R. China.
| | - Jin-Mei Peng
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Pharmacy of Guangxi Normal University, Guilin 541004, P. R. China.
| | - Hua-Hong Zou
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Pharmacy of Guangxi Normal University, Guilin 541004, P. R. China.
| | - Juan Bai
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Pharmacy of Guangxi Normal University, Guilin 541004, P. R. China.
| | - Fu-Pei Liang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Pharmacy of Guangxi Normal University, Guilin 541004, P. R. China.
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22
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Langley SK, Vignesh KR, Gupta T, Gartshore CJ, Rajaraman G, Forsyth CM, Murray KS. New examples of triangular terbium(iii) and holmium(iii) and hexagonal dysprosium(iii) single molecule toroics. Dalton Trans 2019; 48:15657-15667. [PMID: 31482898 DOI: 10.1039/c9dt02419k] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The structural, magnetic and theoretical aspects are described for three triangular lanthanide complexes, [Tb(OH)(teaH2)3(paa)3]Cl2 (1), [Dy(OH)(teaH2)3(paa)3]Cl2 (2) and [Ho(OH)(teaH2)3(paa)3]Cl2 (3), and a hexanuclear wheel of formula [Dy(pdeaH)6(NO3)6] (4) [teaH3 = triethanolamine, paaH = N-(2-pyridyl)-acetoacetamide and pdeaH3 = 3-[bis(2-hydroxyethyl)amino]propan-1-ol]. Each complex displays single molecule toroidal behaviour as rationalised using high-level ab initio calculations. Complexes 2 and 3 are the first examples of mixed moment single molecule toroidal complexes featuring non-Kramers ions.
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Affiliation(s)
- Stuart K Langley
- School of science and the environment, Division of Chemistry, Manchester Metropolitan University, Manchester, M15 6BH, UK.
| | - Kuduva R Vignesh
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai-400076, India.
| | - Tulika Gupta
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai-400076, India.
| | | | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai-400076, India.
| | - Craig M Forsyth
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia.
| | - Keith S Murray
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia.
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23
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Roy S, Hari N, Mohanta S. Synthesis, Crystal Structures, Magnetic Properties, and Fluorescence of Two Heptanuclear Co
III
4
Ln
III
3
Compounds (Ln = Gd
III
, Dy
III
): Multiple Relaxation Dynamics in the Dy
III
Analogue. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900383] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Shuvayan Roy
- Department of Chemistry Inorganic Chemistry Section University of Calcutta 92 A. P. C Road 700 009 Kolkata India
| | - Nairita Hari
- Department of Chemistry Inorganic Chemistry Section University of Calcutta 92 A. P. C Road 700 009 Kolkata India
| | - Sasankasekhar Mohanta
- Department of Chemistry Inorganic Chemistry Section University of Calcutta 92 A. P. C Road 700 009 Kolkata India
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24
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Yoshida T, Izuogu DC, Zhang HT, Cosquer G, Abe H, Wernsdorfer W, Breedlove BK, Yamashita M. Ln-Pt electron polarization effects on the magnetic relaxation of heterometallic Ho- and Er-Pt complexes. Dalton Trans 2019; 48:7144-7149. [PMID: 30265262 DOI: 10.1039/c8dt03338b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Heterometallic Ln-Pt complexes, with the formula [Ln2Pt3(H2O)2(SAc)12] (Ln = Ho(1), Er(2); SAc = thioacetate), were synthesized. From natural bond orbital (NBO) and local orbital locator (LOL) analyses and X-ray absorption fine structure (XAFS) measurements, it was clear that the Ln-Pt interactions or electron polarization occurred. Butterfly-type hysteresis was observed for both 1 and 2. 1 and 2 underwent field-induced slow magnetic relaxation up to 4 K. These magnetic properties were induced by Ln-Pt electron polarization.
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Affiliation(s)
- Takefumi Yoshida
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aza-Aoba, Aramaki, Sendai 980-8578, Japan.
| | - David C Izuogu
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aza-Aoba, Aramaki, Sendai 980-8578, Japan. and Department of Pure & Industrial Chemistry, University of Nigeria, 410001, Nsukka, Nigeria
| | - Hai-Tao Zhang
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aza-Aoba, Aramaki, Sendai 980-8578, Japan.
| | - Goulven Cosquer
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aza-Aoba, Aramaki, Sendai 980-8578, Japan.
| | - Hitoshi Abe
- Institute of Materials Structure Science High Energy Accelerator Research Organization (KEK) 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan and Department of Materials Structure Science, School of High Energy Accelerator Science, SOKENDAI(the Graduate University for Advanced Studies) 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - Wolfgang Wernsdorfer
- Physikalisches Institut, Karlsruher Institut für Technologie Wolfgang-Gaede-Str. 1, D-76131 Karlsruhe, Germany and CNRS and Université Grenoble Alpes, Institut Néel, 38042 Grenoble, France
| | - Brian K Breedlove
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aza-Aoba, Aramaki, Sendai 980-8578, Japan.
| | - Masahiro Yamashita
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aza-Aoba, Aramaki, Sendai 980-8578, Japan. and WPI-Advanced Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Sendai 980-8577, Japan and School of Materials Science and Engineering, Nankai University, Tianjin 300350, China
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25
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Biswas S, Kumar P, Swain A, Gupta T, Kalita P, Kundu S, Rajaraman G, Chandrasekhar V. Phosphonate-assisted tetranuclear lanthanide assemblies: observation of the toroidic ground state in the Tb III analogue. Dalton Trans 2019; 48:6421-6434. [PMID: 30993275 DOI: 10.1039/c9dt00592g] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The reaction of LnCl3·6H2O with a multidentate flexible Schiff base ligand (LH4), H2O3PtBu and trifluoroacetic acid (tfaH) afforded a series of homometallic tetranuclear complexes, [Ln4(LH2)2(O3PtBu)2(μ2-η1η1tfa)2][2Cl] (Ln = DyIII (1), TbIII (2) and GdIII (3)). The tetranuclear lanthanide core contains two structurally different lanthanide centres, one being in a distorted trigonal dodecahedron geometry and the other in a distorted trigonal prism. Complexes 1-3 were investigated via direct and alternating current (DC and AC) magnetic susceptibility measurements. Only 1 revealed a weak single-molecule magnet (SMM) behaviour. Alternating current (ac) magnetic susceptibility measurements on 1 reveal a frequency-dependent out-of-phase signal. However, the absence of distinct maxima in the χ'' peak (within the temperature/frequency range of our experiments) prevented deduction of the experimental energy barrier for magnetization reversal (Ueff) and the relaxation time. We have carried out extensive ab initio (CASSCF + RASSI-SO + SINGLE_ANISO + POLY_ANISO) calculations on complexes 1-2 to gain deeper insights into the nature of magnetic anisotropy. Our calculations yielded only one exchange coupling parameter between the two LnIII centres bridged by the ligand (neglecting the exchange between the LnIII centres that are not proximal wrt each other). All the extracted J values indicate a weakly antiferromagnetic coupling between the metal centres (J = -0.025 cm-1 for 1 and J = -0.015 cm-1 for 2). Calculated exchange coupled Ucal values of ∼5 and ∼1 cm-1 in 1 and 2 respectively nicely corroborated the experimental observations regarding weak and no SMM characteristics. Our calculations indicated the presence of a net single-molecule toroidal (SMT) behaviour in complex 2. On the other hand, fitting the magnetic data (susceptibility and magnetization) in the isotropic cluster 3 revealed weak AFM exchange couplings of J1 = 0.025 cm-1 and J2 = -0.020 cm-1 which are consistent with those for GdIII ions.
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Affiliation(s)
- Sourav Biswas
- Department of Geo-Chemistry, Keshav Deva Malaviya Institute of Petroleum Exploration, Dehradun-248915, India
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26
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Zhou H, Dong R, Wang Z, Wu L, Liu Y, Shen X. The Influence of d‐f Coupling on Slow Magnetic Relaxation in Ni
II
Ln
III
M
III
(Ln = Gd, Tb, Dy; M = Cr, Fe, Co) Clusters. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900263] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Hongbo Zhou
- School of Chemistry and Chemical Engineering Jiangsu University 212013 Zhenjiang China
| | - Rongyao Dong
- School of Chemistry and Chemical Engineering Jiangsu University 212013 Zhenjiang China
| | - Zhuowei Wang
- School of Chemistry and Chemical Engineering Jiangsu University 212013 Zhenjiang China
| | - Lei Wu
- School of Chemistry and Chemical Engineering Jiangsu University 212013 Zhenjiang China
| | - Yashu Liu
- School of Environmental and Chemical Engineering Jiangsu University of Science and Technology 212003 Zhenjiang China
| | - Xiaoping Shen
- School of Chemistry and Chemical Engineering Jiangsu University 212013 Zhenjiang China
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27
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28
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Bereta T, Mondal A, Ślepokura K, Peng Y, Powell AK, Lisowski J. Trinuclear and Hexanuclear Lanthanide(III) Complexes of the Chiral 3+3 Macrocycle: X-ray Crystal Structures and Magnetic Properties. Inorg Chem 2019; 58:4201-4213. [DOI: 10.1021/acs.inorgchem.8b03266] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tomasz Bereta
- Department of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland
| | - Abhishake Mondal
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131 Karlsruhe, Germany
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Katarzyna Ślepokura
- Department of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland
| | - Yan Peng
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131 Karlsruhe, Germany
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Annie K. Powell
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131 Karlsruhe, Germany
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Jerzy Lisowski
- Department of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland
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29
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Langley SK, Vignesh KR, Moubaraki B, Rajaraman G, Murray KS. Oblate versus Prolate Electron Density of Lanthanide Ions: A Design Criterion for Engineering Toroidal Moments? A Case Study on {LnIII6} (Ln=Tb, Dy, Ho and Er) Wheels. Chemistry 2019; 25:4156-4165. [DOI: 10.1002/chem.201805765] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 01/30/2019] [Indexed: 11/11/2022]
Affiliation(s)
- Stuart K. Langley
- School of Science and the Environment, Division of chemistryManchester Metropolitan University Manchester UK
| | | | | | - Gopalan Rajaraman
- Department of ChemistryIndian Institute of Technology Bombay, Powai Mumbai Maharashtra 400 076 India
| | - Keith S. Murray
- School of ChemistryMonash University Clayton Victoria 3800 Australia
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30
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Abstract
An update overview of emerging single-molecule toroics (SMTs) is expounded to elucidate the strategy to design SMTs and ultimately inspire the seeking of SMTs with enhanced toroidal moment.
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Affiliation(s)
- Xiao-Lei Li
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
| | - Jinkui Tang
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
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31
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Maity S, Mondal A, Konar S, Ghosh A. The role of 3d–4f exchange interaction in SMM behaviour and magnetic refrigeration of carbonato bridged CuII2LnIII2 (Ln = Dy, Tb and Gd) complexes of an unsymmetrical N2O4 donor ligand. Dalton Trans 2019; 48:15170-15183. [DOI: 10.1039/c9dt02627d] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The role of exchange interaction between Cu(ii) and Ln(iii) ions in SMM behaviour and magnetocaloric effects has been extensively investigated by both experimental and theoretical CASSCF/RASSI-SO/SINGLE_ANISO methods.
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Affiliation(s)
- Souvik Maity
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata 700009
- India
| | - Arpan Mondal
- Department of Chemistry
- Indian Institute of Science Education and Research Bhopal
- Bhopal 462066
- India
| | - Sanjit Konar
- Department of Chemistry
- Indian Institute of Science Education and Research Bhopal
- Bhopal 462066
- India
| | - Ashutosh Ghosh
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata 700009
- India
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32
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Mahapatra P, Koizumi N, Kanetomo T, Ishida T, Ghosh A. A series of CuII–LnIII complexes of an N2O3 donor asymmetric ligand and a possible CuII–TbIII SMM candidate in no bias field. NEW J CHEM 2019. [DOI: 10.1039/c8nj03512a] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Among four isostructural heterometallic CuII–LnIII complexes (Ln = Tb, Dy, Ho or Er) of an N2O3 donor asymmetric ligand, only the CuII–TbIII complex shows SMM behavior at zero bias field but at applied bias field both the CuII–TbIII and CuII–DyIII complexes show SMM behavior.
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Affiliation(s)
- Prithwish Mahapatra
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata 700009
- India
| | - Naoki Koizumi
- Department of Engineering Science
- The University of Electro-Communications
- Tokyo
- Japan
| | - Takuya Kanetomo
- Department of Engineering Science
- The University of Electro-Communications
- Tokyo
- Japan
| | - Takayuki Ishida
- Department of Engineering Science
- The University of Electro-Communications
- Tokyo
- Japan
| | - Ashutosh Ghosh
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata 700009
- India
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33
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Roy S, Ghosh S, Martins DOTA, Tuna F, Mohanta S. Synthesis, Crystal Structures, and Magnetic Properties of New Hexanuclear Mn
III
2
Ln
III
4
Complexes: SMM Behavior of the Terbium(III) Analogue. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800792] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Shuvayan Roy
- Department of Chemistry Inorganic Chemistry Section University of Calcutta 92 A. P. C Road 700009 Kolkata India
| | - Sagar Ghosh
- Department of Chemistry Inorganic Chemistry Section University of Calcutta 92 A. P. C Road 700009 Kolkata India
| | - Daniel O. T. A. Martins
- National EPR Facility Photon Science Institute University of Manchester Oxford Road M13 9PL Manchester United Kingdom
| | - Floriana Tuna
- National EPR Facility Photon Science Institute University of Manchester Oxford Road M13 9PL Manchester United Kingdom
| | - Sasankasekhar Mohanta
- Department of Chemistry Inorganic Chemistry Section University of Calcutta 92 A. P. C Road 700009 Kolkata India
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34
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Das C, Upadhyay A, Shanmugam M. Influence of Radicals on Magnetization Relaxation Dynamics of Pseudo-Octahedral Lanthanide Iminopyridyl Complexes. Inorg Chem 2018; 57:9002-9011. [DOI: 10.1021/acs.inorgchem.8b00979] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chinmoy Das
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, Maharashtra, India
| | - Apoorva Upadhyay
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, Maharashtra, India
| | - Maheswaran Shanmugam
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, Maharashtra, India
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35
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Ghosh S, Mandal S, Singh MK, Liu CM, Rajaraman G, Mohanta S. Experimental and theoretical exploration of magnetic exchange interactions and single-molecule magnetic behaviour of bis(η1:η2:μ2-carboxylate)GdIII2/DyIII2 systems. Dalton Trans 2018; 47:11455-11469. [DOI: 10.1039/c8dt02008f] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
This investigation demonstrates differences in SMM properties and nature of magnetic exchange in closely related DyIII2/GdIII2 compounds.
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Affiliation(s)
- Sagar Ghosh
- Department of Chemistry
- University of Calcutta
- Kolkata 700009
- India
| | - Shuvankar Mandal
- Department of Chemistry
- University of Calcutta
- Kolkata 700009
- India
| | - Mukesh Kumar Singh
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - Cai-Ming Liu
- Beijing National Laboratory for Molecular Sciences
- Centre for Molecular Science
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Gopalan Rajaraman
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
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36
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Ghosh S, Hari N, Pinkowicz D, Fitta M, Mohanta S. Syntheses, crystal structures and magnetic properties of a series of ZnII2LnIII2 compounds (Ln = Gd, Tb, Dy, Ho and Er): contrasting structural and magnetic features. NEW J CHEM 2018. [DOI: 10.1039/c8nj02532k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the five ZnII2LnIII2 compounds – (i) the TbIII and ErIII analogues show slow relaxation of the magnetization, while the HoIII system and, surprisingly, the DyIII analogue don’t; (ii) the GdIII system shows the MCE; and (iii) interestingly, the Ln–O bond length increases with the increase of atomic number.
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Affiliation(s)
- Sagar Ghosh
- Department of Chemistry
- University of Calcutta
- Kolkata 700 009
- India
| | - Nairita Hari
- Department of Chemistry
- University of Calcutta
- Kolkata 700 009
- India
| | - Dawid Pinkowicz
- Faculty of Chemistry
- Jagiellonian University
- 30-387 Kraków
- Poland
| | - Magdalena Fitta
- Institute of Nuclear Physics
- Polish Academy of Sciences
- 31-342 Krakow
- Poland
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37
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Wu J, Li XL, Guo M, Zhao L, Zhang YQ, Tang J. Realization of toroidal magnetic moments in heterometallic 3d–4f metallocycles. Chem Commun (Camb) 2018; 54:1065-1068. [DOI: 10.1039/c7cc09391h] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Toroidal arrangements of magnetic moments are realized in TbIII and DyIII based heterometallic macrocycles thanks to the magnetic coupling between lanthanide and 3d metal ions.
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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
- P. R. China
| | - Xiao-Lei Li
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Mei Guo
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Lang Zhao
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS
- School of Physical Science and Technology
- Nanjing Normal University
- Nanjing
- P. R. China
| | - Jinkui Tang
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
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