1
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da Silveira COC, Oliveira WXC, da Silva Júnior EN, Alvarenga ME, Martins FT, Gatto CC, Pinheiro CB, Pedroso EF, Silva JPO, Marques LF, Santos MV, Torres FR, Euclides R, Freire RO, Nunes WC, de Almeida AA, Knobel M, Pereira CLM. Photoluminescence and magnetic properties of isostructural europium(III), gadolinium(III) and terbium(III) oxamate-based coordination polymers. Dalton Trans 2024. [PMID: 39076042 DOI: 10.1039/d4dt01290a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/31/2024]
Abstract
Developing and investigating advanced multifunctional materials with magnetic properties as candidates for assembling spin qubits for quantum computing is imperative. A new polytopic ligand based on oxamate and aniline was used to promote the synthesis of three neutral homometallic lanthanide-coordinated polymers. New complexes with the formula {Ln(phox)3(DMSO)2(H2O)}n, where Ln = Eu3+ (1), Gd3+ (2), and Tb3+ (3) [phox = N-(phenyl)oxamate and DMSO = dimethylsulfoxide], were synthesized and well characterized by spectroscopic methods as well as X-ray crystallographic analysis. All crystalline structures comprise neutral zigzag chains. The lanthanide ions are linked by three phox ligands, in which two oxygen atoms from two different ligands are responsible for connecting the trivalent lanthanide ions, and one phox ligand completes the coordination sphere in a bis-bidentate mode, together with two DMSO molecules and one water coordination molecule. The coordination sphere of lanthanide ions consisted of spherical capped square antiprism (CSAPR-9) symmetry. The magnetic properties of 1-3 were investigated in the 2-300 K temperature range. The dynamic (ac) magnetic properties of 2 reveal a frequency dependence involving the phonon bottleneck mechanism below 33 K under nonzero applied dc magnetic fields, resulting in an example of a field-induced single-molecule magnet. Solid-state photophysical measurements for Eu3+ (1) and Tb3+ (3) complexes indicate that the N-(phenyl)oxamate ligands are very efficient in sensitizing the lanthanide(III) ions in the visible region of the electromagnetic spectrum. Compounds 1 and 3 exhibited an emission in the red and green regions, respectively. Experimental results and theoretical calculations using the Sparkle/RM1 method support a quantum efficiency of ∼72% for 1, suggesting its potential as a candidate for light conversion molecular devices (LCMDs).
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Affiliation(s)
- Cleverton O C da Silveira
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Pampulha, Belo Horizonte, Minas Gerais, 31270-901, Brazil.
| | - Willian X C Oliveira
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Pampulha, Belo Horizonte, Minas Gerais, 31270-901, Brazil.
| | - Eufrânio N da Silva Júnior
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Pampulha, Belo Horizonte, Minas Gerais, 31270-901, Brazil.
| | - Meiry E Alvarenga
- Instituto de Química, Universidade Federal de Goiás, Campus Samambaia, Setor Itatiaia, Caixa Postal 131, Goiânia, Goiás, 74001970, Brazil
| | - Felipe T Martins
- Instituto de Química, Universidade Federal de Goiás, Campus Samambaia, Setor Itatiaia, Caixa Postal 131, Goiânia, Goiás, 74001970, Brazil
| | - Claudia C Gatto
- Instituto de Química, Universidade de Brasília, Asa Norte, Brasília, Distrito Federal, 70904970, Brazil
| | - Carlos B Pinheiro
- Departamento de Física, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Pampulha, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Emerson F Pedroso
- Departamento de Química, Centro Federal de Educação Tecnológica de Minas Gerais, Av. Amazonas, 5253, Belo Horizonte, MG, 30421-169, Brazil
| | - Júlia P O Silva
- Grupo de Química de Coordenação e Espectroscopia de Lantanídeos (GQCEL), Universidade do Estado do Rio de Janeiro, Centro de Tecnologia de Ciências, Instituto de Química, Maracanã, Rio de Janeiro, 20550-900, Brazil
| | - Lippy F Marques
- Grupo de Química de Coordenação e Espectroscopia de Lantanídeos (GQCEL), Universidade do Estado do Rio de Janeiro, Centro de Tecnologia de Ciências, Instituto de Química, Maracanã, Rio de Janeiro, 20550-900, Brazil
| | - Moliria V Santos
- Biosmart Nanotechnology Ltda, Avenida Jorge Fernandes de São Mattos, 311, Box 4, Araraquara, 14808-162, SP, Brazil
| | - Francisco R Torres
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, 14040901 - Ribeirão Preto, SP, Brazil
| | - Rividy Euclides
- Pople Computational Chemistry Laboratory, Departamento de Química, Universidade Federal de Sergipe, São Cristóvão-SE, 49100-000, Brazil
| | - Ricardo O Freire
- Pople Computational Chemistry Laboratory, Departamento de Química, Universidade Federal de Sergipe, São Cristóvão-SE, 49100-000, Brazil
| | - Wallace C Nunes
- Instituto de Física, Universidade Federal Fluminense, Av. Gal. Milton Tavares de Souza, s/n°, Niterói 24210-346, RJ, Brazil
| | - Adriele A de Almeida
- Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas, Rua Sérgio Buarque de Holanda, 777, Cidade Universitária Zeferino Vaz, Barão Geraldo, Campinas, SP, 13083-859, Brazil
| | - Marcelo Knobel
- Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas, Rua Sérgio Buarque de Holanda, 777, Cidade Universitária Zeferino Vaz, Barão Geraldo, Campinas, SP, 13083-859, Brazil
| | - Cynthia L M Pereira
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Pampulha, Belo Horizonte, Minas Gerais, 31270-901, Brazil.
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2
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Li Z, Arauzo A, Giner Planas J, Bartolomé E. Magnetic properties and magnetocaloric effect of Ln = Dy, Tb carborane-based metal-organic frameworks. Dalton Trans 2024; 53:8969-8979. [PMID: 38651660 DOI: 10.1039/d4dt00626g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
We present the synthesis and magneto-thermal properties of carborane-based lanthanide metal-organic frameworks (MOFs) with the formula {[(Ln)3(mCB-L)4(NO3)(DMF)n]·Solv}, where Ln = Dy or Tb, characterized by dc and ac susceptibility, X-ray absorption spectroscopy (XAS), X-ray magnetic circular dichroism (XMCD) and heat capacity measurements. The MOF structure is formed by polymeric 1D chains of Ln ions with three different coordination environments (Ln1, Ln2, Ln3) running along the b-axis, linked by carborane-based linkers thus to provide a 3D structure. Static magnetic measurements reveal that these MOFs behave at low temperature as a system of S* = 1/2 Ising spins, weakly interacting ferromagnetically along the 1D polymeric chain (J*/kB = +0.45 K (+0.5 K) interaction constant estimated for Dy-MOF (Tb-MOF)) and coupled to Ln ions in adjacent chains through dipolar antiferromagnetic interactions. The Dy MOF exhibits slow relaxation of magnetization through a thermally activated process, transitioning to quantum tunneling of the magnetization at low temperatures, while both compounds exhibit field-induced relaxation through a very slow, direct process. The maximum magnetic entropy changes (-ΔSmaxm) for an applied magnetic field change of 2-0 T are 5.71 J kg-1 K-1 and 4.78 J kg-1 K-1, for Dy and Tb MOFs, respectively, while the magnetocaloric effect (MCE) peak for both occurs at T ∼ 1.6 K, approximately double that for the Gd counterpart.
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Affiliation(s)
- Zhen Li
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Spain.
- Shandong Provincial Key Laboratory of Monocrystalline Silicon Semiconductor Materials and Technology, College of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, China
| | - Ana Arauzo
- Instituto de Nanociencia y Materiales de Aragón (INMA), Departamento de Física de la Materia Condensada, CSIC-Universidad de Zaragoza, Zaragoza 50009, Spain
| | - José Giner Planas
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Spain.
| | - Elena Bartolomé
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Spain.
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3
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Zabala-Lekuona A, Lopez de Pariza X, Díaz-Ortega IF, Cepeda J, Nojiri H, Gritsan NP, Dmitriev AA, López-Ortega A, Rodríguez-Diéguez A, Seco JM, Colacio E. From field-induced to zero-field SMMs associated with open/closed structures of bis(ZnDy) tetranuclear complexes: a combined magnetic, theoretical and optical study. Dalton Trans 2024; 53:7971-7984. [PMID: 38647324 DOI: 10.1039/d4dt00148f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
We have prepared a bis(compartmental) Mannich base ligand H4L (1,4,8,11-tetraaza-1,4,8,11-tetrakis(2-hydroxy-3-methoxy-5-methylbenzyl)cyclotetradecane) specifically designed to obtain bis(TMIILnIII) tetranuclear complexes (TM = transition metal). In this regard, we have succeeded in obtaining three new complexes of the formula [Zn2(μ-L)(μ-OAc)Dy2(NO3)2]·[Zn2(μ-L)(μ-OAc)Dy2(NO3)(OAc)]·4CHCl3·2MeOH (1) and [TM2(μ-H2L)2(μ-succinate)Ln2(NO3)2] (NO3)2·2H2O·6MeOH (TMII = Zn, LnIII = Dy (2); TMII = Co, LnIII = Dy (3)). Compound 1 contains two different bis(ZnDy) tetranuclear molecules that cocrystallize in the structure, in which acetato bridging ligands connect the ZnII and DyIII ions within each ZnDy subunit. This compound does not exhibit slow magnetic relaxation at zero field, but it is activated in the presence of an applied dc magnetic field and/or by Dy/Y magnetic dilution, showing two relaxation processes corresponding to each of the two different bis(ZnDy) units found in the structure. As revealed by the theoretical calculations, magnetic relaxation in 1 is single-ion in origin and takes place through the first excited state of each DyIII ion. When using the succinato dicarboxylate bridging ligand instead of acetate, compounds 2 and 3 were serendipitously formed, which have a closed structure with the succinate anion bridging two ZnDy subunits belonging to two different ligands. It should be noted that only compound 2 exhibits slow relaxation of magnetization in the absence of an external magnetic field. According to experimental and theoretical data, 2 relaxes through the second excited Kramers doublet (Ueff = 342 K). In contrast, 3 displays field-induced SMM behaviour (Ueff = 203 K). However, the Co/Zn diluted version of this compound 3Zn shows slow relaxation at zero field (Ueff = 347 K). Ab initio theoretical calculations clearly show that the weak ferromagnetic coupling between CoII and DyIII ions is at the origin of the lack of slow relaxation of this compound at zero field. Compound 2 and its diluted analogues 2Y and 3Zn show hysteresis loops at very low temperature, thus confirming their SMM behaviour. Finally, compounds 1 and 2 show DyIII based emission even at room temperature that, in the case of 2, allows us to extract the splitting of the ground 6H15/2 term, which matches reasonably well with theoretical calculations.
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Affiliation(s)
- Andoni Zabala-Lekuona
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco (UPV/EHU), 20018 Donostia-San Sebastián, Spain.
| | - Xabier Lopez de Pariza
- POLYMAT and Department of Polymers and Advanced Materials: Physics, Chemistry and Technology, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizabal 3, Donostia-San Sebastián 20018, Spain
| | - Ismael F Díaz-Ortega
- Departamento de Química y Física-CIESOL, Universidad de Almería, Ctra. Sacramento s/n, 04120 Almería, Spain
- Institute for Materials Research, Tohoku University, Katahira, Sendai, 980-8577, Japan
| | - Javier Cepeda
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco (UPV/EHU), 20018 Donostia-San Sebastián, Spain.
| | - Hiroyuki Nojiri
- Institute for Materials Research, Tohoku University, Katahira, Sendai, 980-8577, Japan
| | - Nina P Gritsan
- Institute of Chemical Kinetics and Combustion, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - Alexey A Dmitriev
- Institute of Chemical Kinetics and Combustion, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - Alberto López-Ortega
- Departamento de Ciencias, Universidad Pública de Navarra, E-31006 Pamplona, Spain
- Institute for Advanced Materials and Mathematics (INAMAT2), Universidad Pública de Navarra, E-31006 Pamplona, Spain
- CIC nanoGUNE BRTA, Tolosa Hiribidea 76, Donostia-San Sebastian, 20018, Spain
| | - Antonio Rodríguez-Diéguez
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain.
| | - José M Seco
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco (UPV/EHU), 20018 Donostia-San Sebastián, Spain.
| | - Enrique Colacio
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain.
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Errulat D, Harriman KLM, Gálico DA, Salerno EV, van Tol J, Mansikkamäki A, Rouzières M, Hill S, Clérac R, Murugesu M. Slow magnetic relaxation in a europium(II) complex. Nat Commun 2024; 15:3010. [PMID: 38589348 PMCID: PMC11001981 DOI: 10.1038/s41467-024-46196-w] [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: 08/09/2023] [Accepted: 02/14/2024] [Indexed: 04/10/2024] Open
Abstract
Single-ion anisotropy is vital for the observation of Single-Molecule Magnet (SMM) properties (i.e., a slow dynamics of the magnetization) in lanthanide-based systems. In the case of europium, the occurrence of this phenomenon has been inhibited by the spin and orbital quantum numbers that give way to J = 0 in the trivalent state and the half-filled population of the 4f orbitals in the divalent state. Herein, by optimizing the local crystal field of a quasi-linear bis(silylamido) EuII complex, the [EuII(N{SiMePh2}2)2] SMM is described, providing an example of a europium complex exhibiting slow relaxation of its magnetization. This behavior is dominated by a thermally activated (Orbach-like) mechanism, with an effective energy barrier of approximately 8 K, determined by bulk magnetometry and electron paramagnetic resonance. Ab initio calculations confirm second-order spin-orbit coupling effects lead to non-negligible axial magnetic anisotropy, splitting the ground state multiplet into four Kramers doublets, thereby allowing for the observation of an Orbach-like relaxation at low temperatures.
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Affiliation(s)
- Dylan Errulat
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
| | - Katie L M Harriman
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
| | - Diogo A Gálico
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
| | - Elvin V Salerno
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL, 32310, USA
| | - Johan van Tol
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL, 32310, USA
| | | | | | - Stephen Hill
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL, 32310, USA.
- Department of Physics, Florida State University, Tallahassee, FL, 32306, USA.
| | - Rodolphe Clérac
- Univ. Bordeaux, CNRS, CRPP, UMR 5031, F-33600, Pessac, France.
| | - Muralee Murugesu
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada.
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5
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Wang LX, Wu XF, Jin XX, Li JY, Wang BW, Liu JY, Xiang J, Gao S. Slow magnetic relaxation in 8-coordinate Mn(II) compounds. Dalton Trans 2023; 52:14797-14806. [PMID: 37812439 DOI: 10.1039/d3dt02307a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
The design and synthesis of high-spin Mn(II)-based single-molecule magnets (SMMs) have not been well developed to a great extent, as compared with a large number of SMMs based on the other first row transition metal complexes. In light of our success in designing Fe(II), Co(II) and Fe(III)-based SMMs with a high coordination number of 8, it is of great interest to design Mn(II) analogues with such a strategy. In this contribution, four Mn(II) compounds, [MnII(Ln)2](ClO4)2 (1-4) were obtained from reactions of neutral tetradentate ligands, L1-L4, with hydrated MnII(ClO4)2 (L1 = 2,9-bis(carbomethoxy)-1,10-phenanthroline, L2 = 2,9-bis(carbomethoxy)-2,2'-dipyridine, L3 = N2,N9-dibutyl-1,10-phenanthroline-2,9-dicarboxamide, L4 = 6,6'-bis(2-(tert-butyl)-2H-tetrazol-5-yl)-2,2'-bipyridine). Their crystal structures have been determined by X-ray crystallography and it clearly shows that the Mn(II) centers in these compounds have an oversaturated coordination number of 8. Their magnetic properties have been investigated in detail; to our surprise, all of these Mn(II) compounds show interesting slow magnetic relaxation behaviors under an applied direct current field, although they have very small negative D values.
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Affiliation(s)
- Li-Xin Wang
- Key Laboratory of Optoelectronic Chemical Materials and Devices (Ministry of Education), School of Optoelectronic Materials and Technology, Jianghan University, Wuhan, 430056, China.
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434020, Hubei, P. R. China
| | - Xiao-Fan Wu
- State Key Laboratory of Rare Earth Materials Chemistry and Applications and PKU-HKU Joint Laboratory on Rare Earth Materials and Bioinorganic Chemistry, Peking University, Beijing 100871, P. R. China.
| | - Xin-Xin Jin
- State Key Laboratory of Rare Earth Materials Chemistry and Applications and PKU-HKU Joint Laboratory on Rare Earth Materials and Bioinorganic Chemistry, Peking University, Beijing 100871, P. R. China.
| | - Jia-Yi Li
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434020, Hubei, P. R. China
| | - Bing-Wu Wang
- State Key Laboratory of Rare Earth Materials Chemistry and Applications and PKU-HKU Joint Laboratory on Rare Earth Materials and Bioinorganic Chemistry, Peking University, Beijing 100871, P. R. China.
| | - Ji-Yan Liu
- Key Laboratory of Optoelectronic Chemical Materials and Devices (Ministry of Education), School of Optoelectronic Materials and Technology, Jianghan University, Wuhan, 430056, China.
| | - Jing Xiang
- Key Laboratory of Optoelectronic Chemical Materials and Devices (Ministry of Education), School of Optoelectronic Materials and Technology, Jianghan University, Wuhan, 430056, China.
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434020, Hubei, P. R. China
| | - Song Gao
- State Key Laboratory of Rare Earth Materials Chemistry and Applications and PKU-HKU Joint Laboratory on Rare Earth Materials and Bioinorganic Chemistry, Peking University, Beijing 100871, P. R. China.
- School of Chemistry, Sun Yat-Sen University, Guangzhou, China
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Nakajima H, Uchida K, Yoshida T, Horii Y, Sato T, Luming Z, Yamashita S, Nakazawa Y, Agulto VC, Nakajima M, Breedlove BK, Yamashita M, Iguchi H, Takaishi S. Porous Mn 2+ Magnet with a Pt-Cl Framework: Correlation between Water Vapor Adsorption/Desorption and Slow Magnetic Relaxation. Chemphyschem 2023; 24:e202200618. [PMID: 36287210 DOI: 10.1002/cphc.202200618] [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: 08/18/2022] [Revised: 10/26/2022] [Indexed: 11/08/2022]
Abstract
We report the water adsorption/desorption behavior and dynamic magnetic properties of the Pt-Cl chain complex [{[Pt(en)2 ][PtCl2 (en)2 ]}3 ][{(MnCl5 )Cl3 }2 ] ⋅ 12H2 O (1). Upon heating 1 in a vacuum, we obtained the dehydrated form [{[Pt(en)2 ][PtCl2 (en)2 ]}3 ][{(MnCl5 )Cl3 }2 ] (1DH). The framework structures of 1 and 1DH are identical, and both complexes underwent slow magnetic relaxation. However, the magnetic relaxation times for 1DH were shorter than those for 1, meaning that the dynamic magnetic properties were controlled upon water vapor adsorption/desorption. From detailed analyses of the dynamic magnetic behavior, a phonon-bottleneck effect contributes to the magnetic relaxation processes. We discuss the mechanism for the changes in the magnetic relaxation processes upon dehydration in terms of the heat capacity and thermal conductivity.
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Affiliation(s)
- Hirotaka Nakajima
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Sendai, 980-8578, Japan
| | - Kaiji Uchida
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Sendai, 980-8578, Japan
| | - Takefumi Yoshida
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Sendai, 980-8578, Japan
| | - Yoji Horii
- Department of Chemistry, Nara Women's University, Kitauoyanishimachi, Nara, 630-8503, Japan
| | - Tetsu Sato
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Sendai, 980-8578, Japan
| | - Zhang Luming
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043, Japan
| | - Satoshi Yamashita
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043, Japan
| | - Yasuhiro Nakazawa
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043, Japan
| | - Verdad C Agulto
- Institute of Laser Engineering, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Makoto Nakajima
- Institute of Laser Engineering, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Brian K Breedlove
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Sendai, 980-8578, Japan
| | - Masahiro Yamashita
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Sendai, 980-8578, Japan.,School of Materials Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Hiroaki Iguchi
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Sendai, 980-8578, Japan
| | - Shinya Takaishi
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Sendai, 980-8578, Japan
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7
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Tubau À, Zinna F, Di Bari L, Font-Bardía M, Vicente R. Luminescence, CPL and magnetic properties of 1D enantiopure Ln 3+ complexes with ( S-) and ( R-) α-methoxyphenylacetate ligand. Dalton Trans 2023; 52:1122-1132. [PMID: 36606358 DOI: 10.1039/d2dt03356a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The reaction of Ln(NO3)2·6H2O (Ln = Eu, Tb, Dy and Sm) with (R)-(-)-α-methoxyphenylacetic acid (R-HMPA) and 1,10-phenanthroline (phen) in EtOH/H2O allows the isolation of 1D chiral compounds of formula [Ln(μ-R-MPA)(R-MPA)2(phen)]n in which Ln = Eu (R-Eu), Tb (R-Tb), Dy (R-Dy) and Sm (R-Sm). The same synthesis by using (S)-(+)-α-methoxyphenylacetic acid (S-HMPA) instead of (R)-(-)-α-methoxyphenylacetic acid allows the isolation of the enantiomeric compounds with formula [Ln(μ-S-MPA)(S-MPA)2(phen)]n where Ln = Eu (S-Eu), Tb (S-Tb), Dy (S-Dy) and Sm (S-Sm). Single crystal X-Ray diffraction measurements were performed for compounds R/S-Eu, R/S-Tb, S-Dy and S-Sm. The luminescence and the circular dichroism measured in the solid state are reported. All compounds show sensitized luminescence, notably the Eu3+ and Tb3+ ones, whose emission color can be perceived by the naked eye. For the Eu3+ and Tb3+ derivatives the quantum yield and the circular polarized luminescence have been measured. For the magnetic allowed transition 5D0 → 7F1 of the Eu3+ compound, the anisotropy factor glum is ±0.013 (+for S-Eu). Also, magnetic properties of all compounds were studied with the Dy3+ analogue showing slow relaxation of the magnetization under a direct current magnetic field of 1000 Oe.
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Affiliation(s)
- Ànnia Tubau
- Departament de Química Inorgànica i Orgànica, Secció de Química Inorgànica, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain.
| | - Francesco Zinna
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via Moruzzi 13, I 56124 Pisa, Italy.
| | - Lorenzo Di Bari
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via Moruzzi 13, I 56124 Pisa, Italy.
| | - Mercè Font-Bardía
- Departament de Mineralogia, Cristal lografia i Dipòsits Minerals and Unitat de Difracció de Raigs X. Centres Científics i Tecnològics de la Universitat de Barcelona (CCiTUB). Universitat de Barcelona, Solé i Sabarís 1-3, 08028 Barcelona, Spain
| | - Ramon Vicente
- Departament de Química Inorgànica i Orgànica, Secció de Química Inorgànica, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain.
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8
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Chen H, Sun L, Zheng K, Zhang J, Ma P, Wang J, Niu J. Oxalate-bridging Nd III-based arsenotungstate with multifunctional NIR-luminescence and magnetic properties. Dalton Trans 2022; 51:10257-10265. [PMID: 35748588 DOI: 10.1039/d2dt01066f] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Oxalate bridged Nd-based arsenotungstate, K14Na6H4[{(As2W19O67(H2O))Nd(H2O)2}2(C2O4)]·64H2O (1), was obtained from the reaction of K14[As2W19O67(H2O)], oxalic acid, and NdCl3·6H2O in mildly acidic aqueous solution. The polyanion exhibits a dimeric structure in which the fully deprotonated oxalate ligands bridge two NdIII cations and the arsenotungstate anions act as blocking ligands. The photoluminescence (PL) spectrum of 1 shows the characteristic emission peak of NdIII in the near-infrared (NIR) region. However, the O → W charge-transfer transitions of arsenotungstate cannot effectively sensitize the emission of NdIII cations as confirmed by the emission spectrum, due to the mismatch of the energy gap between 3T1u → 1A1g (21.57 × 103 cm-1) of arsenotungstate components and 4F3/2 → 4I9/2 (11.43 × 103 cm-1) of NdIII cations. Magnetic studies of 1 demonstrate its field-induced single-molecule magnet (SMM) behavior. Direct current magnetic susceptibility studies imply the weak ferromagnetic couplings present between the two neighboring NdIII cations. In addition, the synergy between the coordination configuration of NdIII cations and the intramolecular magnetic interaction was discussed.
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Affiliation(s)
- Hanhan Chen
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Lin Sun
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Kangting Zheng
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Jinpeng Zhang
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Pengtao Ma
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Jingping Wang
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Jingyang Niu
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China.
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9
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One-Dimensional Gadolinium (III) Complexes Based on Alpha- and Beta-Amino Acids Exhibiting Field-Induced Slow Relaxation of Magnetization. INORGANICS 2022. [DOI: 10.3390/inorganics10030032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Gadolinium (III) complexes exhibiting slow relaxation of magnetization are uncommon and have been much less studied than other compounds based on anisotropic lanthanide (III) ions. We prepared two one-dimensional gadolinium (III) complexes based on α-glycine (gly) and β-alanine (β-ala) amino acids, with the formula {[Gd2(gly)6(H2O)4](ClO4)6·5H2O}n (1) and {[Gd2(β-ala)6(H2O)4](ClO4)6·H2O}n (2), which were magneto-structurally characterized. Compounds 1 and 2 crystallize in the triclinic system (space group Pī). In complex 1, two Gd (III) ions are eight-coordinate and bound to six oxygen atoms from six gly ligands and two oxygen atoms from two water molecules, the metal ions showing different geometries (bicapped trigonal prism and square antiprism). In complex 2, two Gd (III) ions are nine-coordinate and bound to seven oxygen atoms from six β-ala ligands and two oxygen atoms from two water molecules in the same geometry (capped square antiprism). Variable-temperature dc magnetic susceptibility measurements performed on microcrystalline samples of 1 and 2 show similar magnetic behavior for both compounds, with antiferromagnetic coupling between the Gd (III) ions connected through carboxylate groups. Ac magnetic susceptibility measurements reveal slow relaxation of magnetization in the presence of an external dc field in both compounds, hence indicating the occurrence of the field-induced single-molecule magnet (SMM) phenomenon in both 1 and 2.
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10
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Borah A, Murugavel R. Magnetic relaxation in single-ion magnets formed by less-studied lanthanide ions Ce(III), Nd(III), Gd(III), Ho(III), Tm(II/III) and Yb(III). Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214288] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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11
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Ruiz-Bilbao E, Pardo-Almanza M, Oyarzabal I, Artetxe B, Felices LS, García JA, Seco JM, Colacio E, Lezama L, Gutiérrez-Zorrilla JM. Slow Magnetic Relaxation and Luminescent Properties of Mononuclear Lanthanide-Substituted Keggin-Type Polyoxotungstates with Compartmental Organic Ligands. Inorg Chem 2022; 61:2428-2443. [PMID: 35084833 PMCID: PMC8826278 DOI: 10.1021/acs.inorgchem.1c03214] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
![]()
The
reaction of mid to late lanthanide ions with the N,N′-dimethyl-N,N′-bis(2-hydroxy-3-formyl-5-bromobenzyl)ethylene-diamine organic
ligand and monolacunary Keggin type [α-SiW11O39]8– anion affords a series of isostructural
compounds, namely, K5[LnIII(α-SiW11O39)(C20H22Br2N2O4)]·14H2O (1-Ln, Ln = Sm to Lu). The molecular structure of these sandwich-type
complexes is formed by the LnIII ion in a biaugmented trigonal
prismatic geometry, which occupies the external O4 site
of the organic ligand and the vacant site of the lacunary polyoxometalate
(POM) unit. The empty N2O2 coordination site
of the organic ligand allows its unprecedented folding, which displays
a relative perpendicular arrangement of aromatic groups. Weak Br···Br
and π–π interactions established between adjacent
molecular units govern the crystal packing, which results in the formation
of assemblies containing six hybrid species assembled in a chairlike
conformation. 1-Gd and 1-Yb display slow
relaxation of the magnetization after the application of an external
magnetic field with maxima in the out-of-phase magnetic susceptibility
plots below ∼5–6 K, which is ascribed to the presence
of various relaxation mechanisms. Moreover, photoluminescent emission
is sensitized for 1-Sm and 1-Eu in the visible
region and 1-Er and 1-Yb in the NIR. In
contrast, the quenching of metal-centered luminescence in the 1-Tb derivative has been attributed to the out-of-pocket coordination
mode of the lanthanide center within the POM fragment. It is demonstrated
that the 1-Yb dual magneto-luminescent material represents
the first lanthanide-containing POM reported to date with simultaneous
slow magnetic relaxation and NIR emission. Solution stability of the
hybrid molecular species in water is also confirmed by ESI-mass spectrometry
experiments carried out for 1-Tb and 1-Tm. A series of solution stable, molecular
polyoxometalate hybrids,
namely, [α-SiW11O39LnIII(C20H22N2Br2O4)]5− (LnIII = Sm to Lu) have been synthesized
from the combination of mid-to-late lanthanides, lacunary Keggin-type
anions, and a compartmental organic ligand. Metal-centered luminescence
in both the visible and NIR region as well as slow relaxation of magnetization
was found for different members of this family, including the Yb derivative,
which represents the first POM-based system with slow magnetic relaxation
and sensitized emission in the NIR region.
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Affiliation(s)
- Estibaliz Ruiz-Bilbao
- Departamento de Química Inorgánica, Facultad de Ciencia y Tecnología, Universidad del País Vasco UPV/EHU, P.O. Box 644, 48080 Bilbao, Spain
| | - Markel Pardo-Almanza
- Departamento de Química Inorgánica, Facultad de Ciencia y Tecnología, Universidad del País Vasco UPV/EHU, P.O. Box 644, 48080 Bilbao, Spain.,Quantum Materials Science Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna, Okinawa 904-0495, Japan
| | - Itziar Oyarzabal
- BCMaterials, Basque Center for Materials, Applications, and Nanostructures, UPV/EHU Science Park, Leioa 48940, Spain.,IKERBASQUE, Basque Foundation for Science, Bilbao 48009, Spain
| | - Beñat Artetxe
- Departamento de Química Inorgánica, Facultad de Ciencia y Tecnología, Universidad del País Vasco UPV/EHU, P.O. Box 644, 48080 Bilbao, Spain
| | - Leire San Felices
- Servicios Generales de Investigación SGIker, Facultad de Ciencia y Tecnología, Universidad del País Vasco UPV/EHU, P.O. Box 644, Bilbao 48080, Spain
| | - José A García
- BCMaterials, Basque Center for Materials, Applications, and Nanostructures, UPV/EHU Science Park, Leioa 48940, Spain.,Departamento de Física Aplicada II, Facultad de Ciencia y Tecnología, Universidad del País Vasco UPV/EHU, P.O. Box 644, Bilbao 48080, Spain
| | - José Manuel Seco
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco UPV/EHU, 20018 San Sebastián, Spain
| | - Enrique Colacio
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain
| | - Luis Lezama
- Departamento de Química Inorgánica, Facultad de Ciencia y Tecnología, Universidad del País Vasco UPV/EHU, P.O. Box 644, 48080 Bilbao, Spain
| | - Juan M Gutiérrez-Zorrilla
- Departamento de Química Inorgánica, Facultad de Ciencia y Tecnología, Universidad del País Vasco UPV/EHU, P.O. Box 644, 48080 Bilbao, Spain.,BCMaterials, Basque Center for Materials, Applications, and Nanostructures, UPV/EHU Science Park, Leioa 48940, Spain
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12
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Pilichos E, Bhunia P, Font-Bardia M, Ghosh A, Mayans J, Escuer A. Quasi-isotropic SMMs: slow relaxation of the magnetization in polynuclear Cu II/Mn II complexes. Dalton Trans 2022; 51:1779-1783. [PMID: 35076050 DOI: 10.1039/d1dt04074j] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three field induced SMMs built from quasi-isotropic cations like CuII and MnII have been characterized, showing that relatively large clusters with quasi-negligible D and different ground spin states, S = 3/2, 2 or 4, can also exhibit field-induced slow relaxation of magnetization.
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Affiliation(s)
- Evangelos Pilichos
- Departament de Química Inorgànica i Orgànica, Secció Inorgànica and Institute of Nanoscience and Nanotechnology (IN2UB), Universitat de Barcelona, Martí i Franquès 1-11, Barcelona-08028, Spain.
| | - Pradip Bhunia
- Department of Chemistry, University College of Science, University of Calcutta, Kolkata 700009, India
| | - Mercè Font-Bardia
- Departament de Mineralogia, Cristal lografia i Dipòsits Minerals, Universitat de Barcelona, Martí Franqués s/n, 08028 Barcelona (Spain) and Unitat de Difracció de R-X. Centre Científic i Tecnològic de la Universitat de Barcelona (CCiTUB), Solé i Sabarís 1-3, 08028 Barcelona, Spain
| | - Ashutosh Ghosh
- Department of Chemistry, University College of Science, University of Calcutta, Kolkata 700009, India.,Rani Rashmoni Green University, Hooghly 712410, West Bengal, India
| | - Júlia Mayans
- Departament de Química Inorgànica i Orgànica, Secció Inorgànica and Institute of Nanoscience and Nanotechnology (IN2UB), Universitat de Barcelona, Martí i Franquès 1-11, Barcelona-08028, Spain.
| | - Albert Escuer
- Departament de Química Inorgànica i Orgànica, Secció Inorgànica and Institute of Nanoscience and Nanotechnology (IN2UB), Universitat de Barcelona, Martí i Franquès 1-11, Barcelona-08028, Spain.
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13
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Cerdeira AC, Leal JP, Avó J, Viola C, Casimiro MH, Ferreira LM, Paz FAA, Pereira LCJ, Pereira CCL, Monteiro B. Multifunctionality of the [C 2mim][Ln(fod) 4] series (Ln = Nd–Tm except Pm): magnetic, luminescence and thermochemical studies. NEW J CHEM 2022. [DOI: 10.1039/d2nj01415g] [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 [C2mim][Ln(fod)4] series presents a rare and reversible polymorphism, NIR and visible emission as well as SMM behavior. The varieties of physical behaviors make these compounds suitable for potential technological and/or biomedical applications.
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Affiliation(s)
- Ana C. Cerdeira
- Centro de Ciências e Tecnologias Nucleares (C2TN), DECN, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, 2695-066 Bobadela, Portugal
| | - João P. Leal
- Centro de Química Estrutural (CQE), Institute of Molecular Sciences, DECN, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, 2695-066 Bobadela, Portugal
| | - João Avó
- Associate Laboratory i4HB–Institute for Health and Bioeconomy and Institute for Bioengineering and Biosciences (IBB), Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lis-boa, Portugal
| | - Catarina Viola
- LAQV-REQUIMTE, Dep. de Química, Universidade Nova de Lisboa, 2829-516, Monte de Caparica, Portugal
| | - Maria H. Casimiro
- Centro de Ciências e Tecnologias Nucleares (C2TN), Instituto Superior Técnico, Universidade de Lis-boa, Campus Tecnológico e Nuclear, Estrada Nacional 10, 2695-066 Bobadela, Portugal
| | - Luis M. Ferreira
- Centro de Ciências e Tecnologias Nucleares (C2TN), DECN, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, 2695-066 Bobadela, Portugal
| | - Filipe A. A. Paz
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Laura C. J. Pereira
- Centro de Ciências e Tecnologias Nucleares (C2TN), DECN, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, 2695-066 Bobadela, Portugal
| | - Cláudia C. L. Pereira
- LAQV-REQUIMTE, Dep. de Química, Universidade Nova de Lisboa, 2829-516, Monte de Caparica, Portugal
| | - Bernardo Monteiro
- Centro de Química Estrutural (CQE), Institute of Molecular Sciences, DEQ, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, 2695-066 Bobadela, Portugal
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14
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Landart Gereka A, Quesada-Moreno MM, Díaz-Ortega IF, Nojiri H, Ozerov M, Krzystek J, Palacios MA, Colacio E. Large easy-axis magnetic anisotropy in a series of trigonal prismatic mononuclear cobalt (II) complexes with zero-field hidden single-molecule magnet behaviour: The important role of the distortion of the coordination sphere and intermolecular interactions on the slow relaxation. Inorg Chem Front 2022. [DOI: 10.1039/d2qi00275b] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The complexes [Co(L)]X·S (X = CoCl42- , S = CH3CN (1); X = ZnCl42- , S = CH3OH (2)), [Co(L)]X2·S (X = ClO4-, S = 2CH3OH (3) and X =...
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15
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16
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de Oliveira Maciel JW, Lemes MA, Valdo AK, Rabelo R, Martins FT, Queiroz Maia LJ, de Santana RC, Lloret F, Julve M, Cangussu D. Europium(III), Terbium(III), and Gadolinium(III) Oxamato-Based Coordination Polymers: Visible Luminescence and Slow Magnetic Relaxation. Inorg Chem 2021; 60:6176-6190. [PMID: 33861078 DOI: 10.1021/acs.inorgchem.0c03226] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reaction of aqueous solutions of EuIII, TbIII, and GdIII ions with Na2Hpcpa [H3pcpa = N-(4-carboxyphenyl)oxamic acid] afforded three new isostructural oxamate-containing lanthanide(III) coordination polymers of general formula {LnIII2(Hpcpa)3(H2O)5·H2O}n [Ln = Eu (1),Tb (2), and Gd(3)]. Their structure is made up of neutral zigzag chains running parallel to the [101] direction where double syn-syn carboxylate(oxamate)-bridged dilanthanide(III) pairs (Ln1 and Ln2) are linked by three Hpcpa2- ligands, one of them with the μ-κ2O,O':κO″ coordination mode and the other two with the μ3-κ2O,O':κO″:κO'''. Additionally, two of those chains are interlinked through hydrogen bonding and π-π type interactions, resulting in a porous structure with channels where water molecules are hosted. The emission properties of 1 and 2 are evaluated as a function of the temperature, exhibiting an emission in red and green, respectively. The external quantum yield for 2 is approximately 7 times that obtained for 1, indicating that the oxamate ligand is a better sensitizer for TbIII ions. The temperature dependence of the dc magnetic properties of 1-3 reveals a different magnetic behavior depending on the nature of the LnIII ion. A continuous decrease of χMT occurs for 1 upon cooling, and finally χMT tends to vanish, as expected for the thermal depopulation of the six magnetic 7FJ excited states (J = 1-6) of the EuIII ion with a nonmagnetic 7F0 ground state. χMT for 2 decreases sharply with decreasing the temperature due to the depopulation of the splitted mJ levels of the 7F7 ground state of the magnetically anisotropic TbIII ion. A very weak antiferromagnetic interaction between the magnetically isotropic GdIII ions across the double carboxylate(oxamate) bridge is responsible for the small decrease of χMT at low temperatures for 3. The dynamic (ac) magnetic properties of 2 and 3 reveal a slow magnetic relaxation with very incipient frequency-dependent χM″ signals below 6.0 K (2) and frequency-dependent χM″ peaks below 10.0 K (3) under nonzero applied dc magnetic fields, being thus new examples of field-induced single molecule magnets (SMMs).
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Affiliation(s)
| | - Maykon Alves Lemes
- Instituto de Química, Universidade Federal de Goiás, Goiânia, Goiás, Brazil, 74690-900
| | - Ana Karoline Valdo
- Instituto de Química, Universidade Federal de Goiás, Goiânia, Goiás, Brazil, 74690-900.,Instituto Federal de Educação, Ciência e Tecnologia Goiano, Iporá, Goiás, Brazil, 76200-000
| | - Renato Rabelo
- Departament de Química Inorgànica/Instituto de Ciencia Molecular (ICMol), Facultat de Química de la Universitat de València, València, Paterna, Spain, 46980
| | - Felipe Terra Martins
- Instituto de Química, Universidade Federal de Goiás, Goiânia, Goiás, Brazil, 74690-900
| | | | | | - Francesc Lloret
- Departament de Química Inorgànica/Instituto de Ciencia Molecular (ICMol), Facultat de Química de la Universitat de València, València, Paterna, Spain, 46980
| | - Miguel Julve
- Departament de Química Inorgànica/Instituto de Ciencia Molecular (ICMol), Facultat de Química de la Universitat de València, València, Paterna, Spain, 46980
| | - Danielle Cangussu
- Instituto de Química, Universidade Federal de Goiás, Goiânia, Goiás, Brazil, 74690-900
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17
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Ivanin SN, Buzko VY, Goryachko AI, Panyushkin VT. Optical and Magnetic Properties of a Heteroligand Complex of Gadolinium Stearate with Acetyl Acetone. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2021. [DOI: 10.1134/s0036024421020114] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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18
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Mayans J, Escuer A. Correlating the axial Zero Field Splitting with the slow magnetic relaxation in Gd III SIMs. Chem Commun (Camb) 2021; 57:721-724. [PMID: 33496705 DOI: 10.1039/d0cc07474h] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The field-induced out-of-phase magnetic response of a GdIII complex, selected by its good isolation in the network, has been analyzed and the behaviour of this quasi-isotropic cation has been related to its weak axial zero field splitting ∼0.1 cm-1.
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Affiliation(s)
- Júlia Mayans
- Instituto de Ciencia Molecular (ICMol), Universitat de València, Paterna, València 46980, Spain.
| | - Albert Escuer
- Departament de Química Inorgànica i Orgànica, Secció Inorgànica and Institute of Nanoscience (IN2UB) and Nanotecnology, Universitat de Barcelona, Martí i Franquès 1-11, Barcelona-08028, Spain
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19
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Ghosh TK, Maity S, Mayans J, Ghosh A. Family of Isomeric Cu II-Ln III (Ln = Gd, Tb, and Dy) Complexes Presenting Field-Induced Slow Relaxation of Magnetization Only for the Members Containing Gd III. Inorg Chem 2021; 60:438-448. [PMID: 33351616 DOI: 10.1021/acs.inorgchem.0c03129] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The strategic design and synthesis of two isomeric CuII complexes, [CuLA] and [CuLB], of asymmetrically dicondensed N2O3-donor Schiff-base ligands (where H2LA and H2LB are N-salicylidene-N'-3-methoxysalicylidenepropane-1,2-diamine and N-3-methoxysalicylidene-N'-salicylidenepropane-1,2-diamine, respectively) have been accomplished via a convenient CuII template method. These two complexes have been used as metalloligands for the synthesis of three pairs of Cu-Ln isomeric complexes [CuL(μ-NO3)Ln(NO3)2(H2O)]·CH3CN (for complexes 1A-3A, L = LA, and for complexes 1B-3B, L = LB and Ln = Gd, Tb, and Dy, respectively), all of which have been characterized structurally. In all six isomorphous and isostructural complexes, the decacoordinated LnIII centers and pentacoordinated CuII centers possess sphenocorona and square-pyramidal geometries, respectively. The isomeric pair of Cu-Gd compounds shows field-induced slow relaxation of magnetization, although they present the typical isotropic behavior of GdIII complexes, indicating that slow relaxation is not due to the usual energy barrier originating from the magnetic anisotropy. The isostructural derivatives with the ion-anisotropic lanthanides TbIII and DyIII do not show slow magnetic relaxation with or without a direct-current bias field, demonstrating that the magnetic response of the isotropic system CuII-GdIII occurs through different mechanisms than the rest of the Ln cations.
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Affiliation(s)
- Tanmoy Kumar Ghosh
- Department of Chemistry, University College of Science, University of Calcutta, 92 APC Road, Kolkata 700009, India
| | - Souvik Maity
- Department of Chemistry, University College of Science, University of Calcutta, 92 APC Road, Kolkata 700009, India
| | - Júlia Mayans
- Instituto de Ciencia Molecular, Universitat de València, c/Catedrático José Beltrán 2, Paterna (València) 46980, Spain
| | - Ashutosh Ghosh
- Department of Chemistry, University College of Science, University of Calcutta, 92 APC Road, Kolkata 700009, India.,Rani Rashmoni Green University, Tarakeswar, Hooghly 712410, West Bengal, India
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Ivanin SN, Panyushkin VT, Buzko VY, Selivantev YM, Kostyrina TV. SYNTHESIS, INVESTIGATION, AND MOLECULAR SIMULATION OF POSSIBLE STRUCTURES OF A HETEROLIGAND COMPLEX OF GADOLINIUM STEARATE WITH ACETYLACETONE. J STRUCT CHEM+ 2021. [DOI: 10.1134/s0022476621010030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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21
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Tubau À, Rodríguez L, Lázaro A, Vicente R, Font-Bardía M. Improving the emission quantum yield in dinuclear Eu( iii) and Tb( iii) complexes with 2-fluorobenzoate. NEW J CHEM 2021. [DOI: 10.1039/d1nj04335h] [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
Luminescence studies performed on Ln(iii) compounds with the formula [Ln2(μ2-2FBz)4(2FBz)2(H-2FBz)2(H2O)2] for Ln = Eu (1) and Tb (2) indicate improved luminescence emission.
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Affiliation(s)
- Ànnia Tubau
- Departament de Química Inorgànica i Orgànica, Secció de Química Inorgànica, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
- Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, 08028 Barcelona, Spain
| | - Laura Rodríguez
- Departament de Química Inorgànica i Orgànica, Secció de Química Inorgànica, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
- Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, 08028 Barcelona, Spain
| | - Ariadna Lázaro
- Departament de Química Inorgànica i Orgànica, Secció de Química Inorgànica, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
- Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, 08028 Barcelona, Spain
| | - Ramon Vicente
- Departament de Química Inorgànica i Orgànica, Secció de Química Inorgànica, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
- Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, 08028 Barcelona, Spain
| | - Mercè Font-Bardía
- Departament de Mineralogia, Cristallografia i Dipòsits Minerals and Unitat de Difracció de R-X, Centre Científic i Tecnològic de la Universitat de Barcelona (CCiTUB), Universitat de Barcelona, Solé i Sabarís 1-3, 08028 Barcelona, Spain
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22
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Shmelev MA, Kiskin MA, Voronina JK, Babeshkin KA, Efimov NN, Varaksina EA, Korshunov VM, Taydakov IV, Gogoleva NV, Sidorov AA, Eremenko IL. Molecular and Polymer Ln 2M 2 (Ln = Eu, Gd, Tb, Dy; M = Zn, Cd) Complexes with Pentafluorobenzoate Anions: The Role of Temperature and Stacking Effects in the Structure; Magnetic and Luminescent Properties. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E5689. [PMID: 33322115 PMCID: PMC7763275 DOI: 10.3390/ma13245689] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 12/07/2020] [Accepted: 12/08/2020] [Indexed: 12/17/2022]
Abstract
Varying the temperature of the reaction of [{Cd(pfb)(H2O)4}+n·n(pfb)-], [Ln2(pfb)6(H2O)8]·H2O (Hpfb = pentafluorobenzoic acid), and 1,10-phenanthroline (phen) in MeCN followed by crystallization resulted in the isolation of two type of products: 1D-polymers [LnCd(pfb)5(phen)]n·1.5nMeCN (Ln = Eu (I), Gd (II), Tb (III), Dy (IV)) which were isolated at 25 °C, and molecular compounds [Tb2Cd2(pfb)10(phen)2] (V) formed at 75 °C. The transition from a molecular to a polymer structure becomes possible because of intra- and intermolecular interactions between the aromatic cycles of phen and pfb from neighboring tetranuclear Ln2Cd2 fragments. Replacement of cadmium with zinc in the reaction resulted in molecular compounds Ln2Zn2 [Ln2Zn2(pfb)10(phen)2]·4MeCN (Ln = Eu (VI), Tb (VIII), Dy (IX)) and [Gd2Zn2(pfb)10(H2O)2(phen)2]·4MeCN (VII). A new molecular EuCd complex [Eu2Cd2(pfb)10(phen)4]·4MeCN (X)] was isolated from a mixture of cadmium, zinc, and europium pentafluorobenzoates (Cd:Zn:Ln = 1:1:2). Complexes II-IV, VII and IX exhibit magnetic relaxation at liquid helium temperatures in nonzero magnetic fields. Luminescent studies revealed a bright luminescence of complexes with europium(III) and terbium(III) ions.
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Affiliation(s)
- Maxim A. Shmelev
- N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia; (M.A.S.); (J.K.V.); (K.A.B.); (N.N.E.); (N.V.G.); (A.A.S.); (I.L.E.)
| | - Mikhail A. Kiskin
- N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia; (M.A.S.); (J.K.V.); (K.A.B.); (N.N.E.); (N.V.G.); (A.A.S.); (I.L.E.)
| | - Julia K. Voronina
- N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia; (M.A.S.); (J.K.V.); (K.A.B.); (N.N.E.); (N.V.G.); (A.A.S.); (I.L.E.)
| | - Konstantin A. Babeshkin
- N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia; (M.A.S.); (J.K.V.); (K.A.B.); (N.N.E.); (N.V.G.); (A.A.S.); (I.L.E.)
| | - Nikolay N. Efimov
- N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia; (M.A.S.); (J.K.V.); (K.A.B.); (N.N.E.); (N.V.G.); (A.A.S.); (I.L.E.)
| | - Evgenia A. Varaksina
- P. N. Lebedev Physical Institute, Russian Academy of Sciences, 119991 Moscow, Russia; (E.A.V.); (V.M.K.); (I.V.T.)
| | - Vladislav M. Korshunov
- P. N. Lebedev Physical Institute, Russian Academy of Sciences, 119991 Moscow, Russia; (E.A.V.); (V.M.K.); (I.V.T.)
- Faculty of Fundamental Sciences, Bauman Moscow State Technical University, 105005 Moscow, Russia
| | - Ilya V. Taydakov
- P. N. Lebedev Physical Institute, Russian Academy of Sciences, 119991 Moscow, Russia; (E.A.V.); (V.M.K.); (I.V.T.)
- Academic Department of Innovational Materials and Technologies Chemistry, Plekhanov Russian University of Economics, 117997 Moscow, Russia
| | - Natalia V. Gogoleva
- N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia; (M.A.S.); (J.K.V.); (K.A.B.); (N.N.E.); (N.V.G.); (A.A.S.); (I.L.E.)
| | - Alexey A. Sidorov
- N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia; (M.A.S.); (J.K.V.); (K.A.B.); (N.N.E.); (N.V.G.); (A.A.S.); (I.L.E.)
| | - Igor L. Eremenko
- N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia; (M.A.S.); (J.K.V.); (K.A.B.); (N.N.E.); (N.V.G.); (A.A.S.); (I.L.E.)
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23
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Horii Y, Katoh K, Miyazaki Y, Damjanović M, Sato T, Ungur L, Chibotaru LF, Breedlove BK, Nakano M, Wernsdorfer W, Yamashita M. Coexistence of Spin-Lattice Relaxation and Phonon-Bottleneck Processes in Gd III -Phthlocyaninato Triple-Decker Complexes under Highly Diluted Conditions. Chemistry 2020; 26:8076-8082. [PMID: 32057140 DOI: 10.1002/chem.201905796] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Indexed: 11/06/2022]
Abstract
Gd3+ complexes have been shown to undergo unusual slow magnetic relaxation processes similar to those of single-molecule magnets (SMMs), even though Gd3+ does not exhibit strong magnetic anisotropy. To reveal the origin of the slow magnetic relaxation of Gd3+ complexes, we have investigated the magnetic properties and heat capacities of two Gd3+ -phthalocyaninato triple-decker complexes, one of which has intramolecular Gd3+ -Gd3+ interactions and the other does not. It was found that the Gd3+ -Gd3+ interactions accelerate the magnetic relaxation processes. In addition, magnetically diluted samples, prepared by doping a small amount of the Gd3+ complexes into a large amount of diamagnetic Y3+ complexes, underwent dual magnetic relaxation processes. A detailed dynamic magnetic analysis revealed that the coexistence of spin-lattice relaxation and phonon-bottleneck processes is the origin of the dual magnetic relaxation processes.
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Affiliation(s)
- Yoji Horii
- Advanced Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan
| | - Keiichi Katoh
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai, Miyagi, 980-8578, Japan
| | - Yuji Miyazaki
- Research Center for Thermal and Entropic Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka, 560-0043, Japan
| | - Marko Damjanović
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Tetsu Sato
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai, Miyagi, 980-8578, Japan
| | - Liviu Ungur
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore
| | - Liviu F Chibotaru
- Theory of Nanomaterials Group, Katholieke Universiteit Leuven, 3001, Leuven, Belgium
| | - Brian K Breedlove
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai, Miyagi, 980-8578, Japan
| | - Motohiro Nakano
- Research Center for Thermal and Entropic Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka, 560-0043, Japan
| | - Wolfgang Wernsdorfer
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Masahiro Yamashita
- Advanced Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan.,Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai, Miyagi, 980-8578, Japan.,School of Materials Science and Engineering, Nankai University, Tianjin, 300350, China
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24
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Rubín J, Badía-Romano L, Luis F, Mereacre V, Prodius D, Arauzo A, Bartolomé F, Bartolomé J. Magnetic chains of Fe 3 clusters in the {Fe 3YO 2} butterfly molecular compound. Dalton Trans 2020; 49:2979-2988. [PMID: 32077873 DOI: 10.1039/c9dt04816b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The "butterfly" molecule [Fe3Y(μ3-O)2(CCl3COO)8(H2O)(THF)3] (in brief {Fe3YO2}) includes three Fe3+ ions which build a robust Fe3 cluster with a strong intracluster antiferromagnetic exchange and a total spin S = 5/2. It represents the starting magnetic system to study further interactions with magnetic rare earths when Y is replaced with lanthanides. We present heat capacity and equilibrium susceptibility measurements below 2 K, which show that each cluster has a sizeable magnetic anisotropy pointing to the existence of intercluster interactions. However, no phase transition to a long-range magnetically ordered phase is observed down to 20 mK. The intercluster interaction is analysed in the framework of the one-dimensional Blume-Capel model with an antiferromagnetic chain interaction constant J/kB = -40(2) mK between Fe3 cluster spins, and a uniaxial anisotropy with parameter D/kB = -0.56(3) K. This is associated to single chains of Fe3 clusters oriented along the shortest intercluster distances displayed by the crystal structure of {Fe3YO2}. Ac susceptibility measurements reveal that the magnetic relaxation is dominated by a quantum tunnelling process below 0.2 K, and by thermally activated processes above this temperature. The experimental activation energy of this single chain magnet, Ea/kB = 3.4(6) K, can be accounted for by the combination of contributions arising from single-molecule magnetic anisotropy and spin-spin correlations along the chains.
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Affiliation(s)
- Javier Rubín
- Instituto de Ciencia de Materiales de Aragón, CSIC - Universidad de Zaragoza, E-50018 Zaragoza, Spain. and Dept. Ciencia y Tecnología de Materiales y Fluidos, Universidad de Zaragoza, E-50018 Zaragoza, Spain
| | - Laura Badía-Romano
- Instituto de Ciencia de Materiales de Aragón, CSIC - Universidad de Zaragoza, E-50018 Zaragoza, Spain. and Dept. Física de la Materia Condensada, Universidad de Zaragoza, E-50009 Zaragoza, Spain
| | - Fernando Luis
- Instituto de Ciencia de Materiales de Aragón, CSIC - Universidad de Zaragoza, E-50018 Zaragoza, Spain. and Dept. Física de la Materia Condensada, Universidad de Zaragoza, E-50009 Zaragoza, Spain
| | - Valeriu Mereacre
- Institute of Chemistry, Academy of Science of Moldova, MD-2028 Chisinau, Republic of Moldova
| | - Denis Prodius
- Institute of Chemistry, Academy of Science of Moldova, MD-2028 Chisinau, Republic of Moldova
| | - Ana Arauzo
- Dept. Física de la Materia Condensada, Universidad de Zaragoza, E-50009 Zaragoza, Spain and Servicio de Medidas Físicas, Universidad de Zaragoza, E-50009 Zaragoza, Spain
| | - Fernando Bartolomé
- Instituto de Ciencia de Materiales de Aragón, CSIC - Universidad de Zaragoza, E-50018 Zaragoza, Spain. and Dept. Física de la Materia Condensada, Universidad de Zaragoza, E-50009 Zaragoza, Spain
| | - Juan Bartolomé
- Instituto de Ciencia de Materiales de Aragón, CSIC - Universidad de Zaragoza, E-50018 Zaragoza, Spain. and Dept. Física de la Materia Condensada, Universidad de Zaragoza, E-50009 Zaragoza, Spain
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25
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Handzlik G, Magott M, Arczyński M, Sheveleva AM, Tuna F, Sarewicz M, Osyczka A, Rams M, Vieru V, Chibotaru LF, Pinkowicz D. Magnetization Dynamics and Coherent Spin Manipulation of a Propeller Gd(III) Complex with the Smallest Helicene Ligand. J Phys Chem Lett 2020; 11:1508-1515. [PMID: 31994400 PMCID: PMC7497647 DOI: 10.1021/acs.jpclett.9b03275] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 01/29/2020] [Indexed: 06/10/2023]
Abstract
A homoleptic gadolinium(III) complex with the smallest helicene-type ligand, 1,10-phenanthroline-N,N'-dioxide (phendo) [Gd(phendo)4](NO3)3·xMeOH (phendo = 1,10-phenanthroline-N,N'-dioxide, MeOH = methanol), shows slow relaxation of the magnetization characteristic for Single Ion Magnets (SIM), despite negligible magnetic anisotropy, confirmed by ab initio calculations. Solid state dilution magnetic and EPR studies reveal that the magnetization dynamics of the [Gd(phendo)4]3+ cation is controlled mainly by a Raman process. Pulsed EPR experiments demonstrate long phase memory times (up to 2.7 μs at 5 K), enabling the detection of Rabi oscillations at 20 K, which confirms coherent control of its spin state.
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Affiliation(s)
- Gabriela Handzlik
- Faculty
of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland
| | - Michał Magott
- Faculty
of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland
| | - Mirosław Arczyński
- Faculty
of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland
| | - Alena M. Sheveleva
- School
of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Floriana Tuna
- School
of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Marcin Sarewicz
- Department
of Molecular Biophysics, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Kraków, Poland
| | - Artur Osyczka
- Department
of Molecular Biophysics, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Kraków, Poland
| | - Michał Rams
- Marian
Smoluchowski Institute of Physics, Jagiellonian
University, Łojasiewicza
11, 30-348 Kraków, Poland
| | - Veacheslav Vieru
- Theory and
Nanomaterials Group, Katholieke Universiteit
Leuven, Celestijnenlaan
200F, 3001 Leuven, Belgium
| | - Liviu F. Chibotaru
- Theory and
Nanomaterials Group, Katholieke Universiteit
Leuven, Celestijnenlaan
200F, 3001 Leuven, Belgium
| | - Dawid Pinkowicz
- Faculty
of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland
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26
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Arauzo A, Gasque L, Fuertes S, Tenorio C, Bernès S, Bartolomé E. Coumarin-lanthanide based compounds with SMM behavior and high quantum yield luminescence. Dalton Trans 2020; 49:13671-13684. [PMID: 32996514 DOI: 10.1039/d0dt02614j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Coumarin-based lanthanide complexes of general formula [Ln(coum)3(phen)(H2O)x]·yH2O (Ln-phen, x = 0,1, 0 ≤ y ≤ 1.5; phen = 1,10-phenanthroline; coum = 3-acetyl-4-hydroxylato-coumarin; Ln = Eu, Tb, Dy, Tm) and [Ln(coum)3(batho)]·0.7EtOH (Ln-batho, batho = 4,7-diphenyl-1,10-phenanthroline; Ln = Eu, Tb, Dy, Tm) were synthesized. The magnetic relaxation and photoluminescence behavior of these complexes was compared with that of the related compounds [Ln(coum)3(EtOH)(H2O)]·EtOH (Ln-coum), so as to investigate the effects of incorporating a second chromophore, either the phen or batho ligand, to the original coordination scaffold, provided with three coumarin (coum) ligands. Slow relaxation of the magnetization under H = 0 with moderate activation energies was observed for the Dy-phen (U/kB = 99.1 K) and Dy-batho (U/kB = 67.1 K) compounds, whereas Tb analogues presented field-induced single molecule magnet (SMM) behavior, with U/kB = 11.7 K (16.6 K@3 kOe) for Tb-phen (Tb-batho), respectively. Luminescent emission in the visible range was observed for all the Ln-coumarin based compounds upon ligand sensitization, with high quantum yields of 45 (40%) for Eu-phen (Eu-batho) compounds and 65-76-58% for Tb-coum, phen, batho analogues. Sensitization is mainly provided by the coumarin ligand having the energy difference ΔE between its triplet state T1 and the lanthanide emitting level closest to the optimum, while the second ligand can play either a synergistic or competing sensitizing role. The Tb-phen/batho compounds presented simultaneously SMM and luminescent behavior, with excellent values of the bifunctional figure of merit (ηSMM-QY ∼ 1000% K). The reported compounds represent a new class of bifunctional materials with potential interesting application in various fields.
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Affiliation(s)
- A Arauzo
- Servicio de Medidas Físicas. Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain and Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza, Spain
| | - L Gasque
- Facultad de Química, Universidad Nacional Autónoma de México, Avenida Universidad 3000, CDMX 04510, Mexico.
| | - S Fuertes
- Instituto de Síntesis Química y Catálisis Homogénea CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - C Tenorio
- Facultad de Química, Universidad Nacional Autónoma de México, Avenida Universidad 3000, CDMX 04510, Mexico.
| | - S Bernès
- Instituto de Física Luis Rivera Terrazas, BUAP, Edificio IF2, Lab. 103/104, 72570 Puebla, Mexico
| | - E Bartolomé
- Escola Universitària Salesiana de Sarrià (EUSS), Passeig Sant Joan Bosco 74, 08017-Barcelona, Spain.
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27
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Palacios MA, Díaz-Ortega IF, Nojiri H, Suturina EA, Ozerov M, Krzystek J, Colacio E. Tuning magnetic anisotropy by the π-bonding features of the axial ligands and the electronic effects of gold( i) atoms in 2D {Co(L) 2[Au(CN) 2] 2} n metal–organic frameworks with field-induced single-ion magnet behaviour. Inorg Chem Front 2020. [DOI: 10.1039/d0qi00996b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
AuI atoms play an important role in determining the anisotropy of CoII nodes in 2D AuI–CoII field-induced SIMs.
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Affiliation(s)
- María A. Palacios
- Departamento de Química Inorgánica
- Facultad de Ciencias
- Universidad de Granada
- 18071 Granada
- Spain
| | - Ismael F. Díaz-Ortega
- Departamento de Química Inorgánica
- Facultad de Ciencias
- Universidad de Granada
- 18071 Granada
- Spain
| | - Hiroyuki Nojiri
- Institute for Materials Research
- Tohoku University
- Sendai
- Japan
| | - Elizaveta A. Suturina
- Department of Chemistry
- University of Bath
- Wessex House 1.28
- University of Bath
- Bath BA2 7AY
| | - Mykhaylo Ozerov
- National High Magnetic Field Laboratory
- Florida State University
- Tallahassee
- USA
| | - J. Krzystek
- National High Magnetic Field Laboratory
- Florida State University
- Tallahassee
- USA
| | - Enrique Colacio
- Departamento de Química Inorgánica
- Facultad de Ciencias
- Universidad de Granada
- 18071 Granada
- Spain
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28
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In silico design of pseudo D5h actinide based molecular magnets: role of covalency in magnetic anisotropy. J CHEM SCI 2019. [DOI: 10.1007/s12039-019-1705-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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29
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Bartolomé E, Arauzo A, Luzón J, Melnic S, Shova S, Prodius D, Nlebedim IC, Bartolomé F, Bartolomé J. High relaxation barrier in neodymium furoate-based field-induced SMMs. Dalton Trans 2019; 48:15386-15396. [PMID: 31257389 DOI: 10.1039/c9dt02047k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two new neodymium molecular magnets of formula {[Nd(α-fur)3(H2O)2]·DMF}n (1) and {[Nd0.065La0.935(α-fur)3(H2O)2]}n (2), α-fur = C4H3OCOO, have been synthesized. In (1) the furoate ligands, in bidentate bridging mode, consolidate zig-zag chains running along the a-direction. Compound (2) is a magnetically diluted complex of a polymeric chain along the b-axis. Heat capacity, dc magnetization and ac susceptibility measurements have been performed from 1.8 K up to room temperature. Ab initio calculations yielded the gyromagnetic factors gx* = 0.52, gy* = 1.03, gz* = 4.41 for (1) and gx* = 1.35, gy* = 1.98, gz* = 3.88 for (2), and predicted energy gaps of Δ/kB = 125.5 K (1) and Δ/kB = 58.8 K (2). Heat capacity and magnetometry measurements agree with these predictions, and confirm the non-negligible transversal anisotropy of the Kramers doublet ground state. A weak intrachain antiferromagnetic interaction J'/kB = -3.15 × 10-3 K was found for (1). No slow relaxation is observed at H = 0, attributed to the sizable transverse anisotropy component, and/or dipolar or exchange interactions enhancing the quantum tunnelling probability. Under an external applied field as small as 80 Oe, two slow relaxation processes appear: above 3 K the first relaxation mechanism is associated to a combination of Orbach process, with a sizeable activation energy U/kB = 121 K at 1.2 kOe for (1), Raman and direct processes; the second, slowest relaxation mechanism is associated to a direct process, affected by phonon-bottleneck effect. For complex (2) a smaller U/kB = 61 K at 1.2 kOe is found, together with larger g*-transversal terms, and the low-frequency process is quenched. The reported complexes represent rare polymeric Nd single-ion magnets exhibiting high activation energies among the scarce Nd(iii) family.
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Affiliation(s)
- E Bartolomé
- Escola Universitària Salesiana de Sarrià (EUSS), Passeig Sant Joan Bosco 74, 08017-Barcelona, Spain.
| | - A Arauzo
- Instituto de Ciencia de Materiales de Aragón, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain and Servicio de Medidas Físicas. Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - J Luzón
- Instituto de Ciencia de Materiales de Aragón, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain and Centro Universitario de la Defensa. Academia General Militar, Zaragoza, Spain
| | - S Melnic
- Institute of Chemistry, Academy of Sciences of Moldova, Academiei 3, MD-2028, Chisinau, Republic of Moldova
| | - S Shova
- "Petru Poni" Institute of Macromolecular Chemistry, Alea Gr. Ghica Voda 41A, 700487 Iasi, Romania
| | - D Prodius
- Ames Laboratory, US Department of Energy and Critical Materials Institute, Ames, IA-50011-3020, USA
| | - I C Nlebedim
- Ames Laboratory, US Department of Energy and Critical Materials Institute, Ames, IA-50011-3020, USA
| | - F Bartolomé
- Instituto de Ciencia de Materiales de Aragón, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - J Bartolomé
- Instituto de Ciencia de Materiales de Aragón, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
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30
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Petrosyants SP, Ilyukhin AB, Gavrikov AV, Mikhlina YA, Puntus LN, Varaksina EA, Efimov NN, Novotortsev VM. Luminescent and magnetic properties of mononuclear lanthanide thiocyanates with terpyridine as auxiliary ligand. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.11.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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31
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Masegosa A, Palacios MA, Ruiz E, Gómez-Coca S, Krzystek J, Moreno JM, Colacio E. Dinuclear CoIIYIIIvs. tetranuclear CoII2YIII2 complexes: the effect of increasing molecular size on magnetic anisotropy and relaxation dynamics. Dalton Trans 2019; 48:14873-14884. [DOI: 10.1039/c9dt02969a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The lower distortion of the CoII ions in the new tetranuclear CoII2YIII2 complex leads to a larger magnetic anisotropy than in its CoIIYIII counterparts, whereas its larger size and flexibility seem to promote a faster relaxation dynamic.
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Affiliation(s)
- Alberto Masegosa
- Departamento de Química Inorgánica
- Facultad de Ciencias
- Universidad de Granada
- 18071 Granada
- Spain
| | - María A. Palacios
- Departamento de Química Inorgánica
- Facultad de Ciencias
- Universidad de Granada
- 18071 Granada
- Spain
| | - Eliseo Ruiz
- Departament de Química Inorgànica and Institut de Recerca de Química Teòrica i Computacional
- Universitat de Barcelona
- Barcelona E-08028
- Spain
| | - Silvia Gómez-Coca
- Departament de Química Inorgànica and Institut de Recerca de Química Teòrica i Computacional
- Universitat de Barcelona
- Barcelona E-08028
- Spain
| | - J. Krzystek
- National High Magnetic Field Laboratory
- Florida State University
- Tallahassee
- USA
| | - José M. Moreno
- Departamento de Química Inorgánica
- Facultad de Ciencias
- Universidad de Granada
- 18071 Granada
- Spain
| | - Enrique Colacio
- Departamento de Química Inorgánica
- Facultad de Ciencias
- Universidad de Granada
- 18071 Granada
- Spain
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32
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Wang J, Ruan ZY, Li QW, Chen YC, Huang GZ, Liu JL, Reta D, Chilton NF, Wang ZX, Tong ML. Slow magnetic relaxation in a {EuCu5} metallacrown. Dalton Trans 2019; 48:1686-1692. [DOI: 10.1039/c8dt04814b] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A {EuIIICu5} metallacrown displays field-induced slow magnetic relaxation, in which the EuIII with diamagnetic ground state enhances the relaxation rates.
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Affiliation(s)
- Jin Wang
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- P. R. China
| | - Ze-Yu Ruan
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- P. R. China
| | - Quan-Wen Li
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- P. R. China
| | - Yan-Cong Chen
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- P. R. China
| | - Guo-Zhang Huang
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- P. R. China
| | - Jun-Liang Liu
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- P. R. China
| | - Daniel Reta
- School of Chemistry
- The University of Manchester
- Manchester M13 9PL
- UK
| | | | - Zhen-Xing Wang
- Wuhan National High Magnetic Center
- Huazhong University of Science and Technology
- Wuhan 430074
- P. R. China
| | - Ming-Liang Tong
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- P. R. China
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33
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Vráblová A, Tomás M, Falvello LR, Dlháň Ľ, Titiš J, Černák J, Boča R. Slow magnetic relaxation in Ni–Ln (Ln = Ce, Gd, Dy) dinuclear complexes. Dalton Trans 2019; 48:13943-13952. [DOI: 10.1039/c9dt02122a] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Unusual magnetic behaviour is observed in compounds with three Cl ligands in fac-mode coordination to dysprosium, cerium and even gadolinium.
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Affiliation(s)
- Anna Vráblová
- Department of Inorganic Chemistry
- Institute of Chemistry
- P. J. Šafárik University in Košice
- Košice
- Slovakia
| | - Milagros Tomás
- Centro de Quimica y Materiales de Aragón (CEQMA-ISQCH)
- Departamento de Química Inorgánica
- Pedro Cerbuna 12
- University of Zaragoza–CSIC
- E-50009 Zaragoza
| | - Larry R. Falvello
- Instituto de Ciencia de Materiales de Aragón (ICMA)
- Departamento de Química Inorgánica
- University of Zaragoza–CSIC
- E-50009 Zaragoza
- Spain
| | - Ľubor Dlháň
- Institute of Inorganic Chemistry
- Slovak University of Technology
- 812 37 Bratislava
- Slovakia
| | - Ján Titiš
- Department of Chemistry
- FPV
- University of SS Cyril and Methodius
- 917 01 Trnava
- Slovakia
| | - Juraj Černák
- Department of Inorganic Chemistry
- Institute of Chemistry
- P. J. Šafárik University in Košice
- Košice
- Slovakia
| | - Roman Boča
- Department of Chemistry
- FPV
- University of SS Cyril and Methodius
- 917 01 Trnava
- Slovakia
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34
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Echenique-Errandonea E, Zabala-Lekuona A, Cepeda J, Rodríguez-Diéguez A, Seco JM, Oyarzabal I, Colacio E. Effect of the change of the ancillary carboxylate bridging ligand on the SMM and luminescence properties of a series of carboxylate-diphenoxido triply bridged dinuclear ZnLn and tetranuclear Zn 2Ln 2 complexes (Ln = Dy, Er). Dalton Trans 2018; 48:190-201. [PMID: 30516203 DOI: 10.1039/c8dt03800g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Eleven new dinuclear and tetranuclear compounds of general formulae [Zn(μ-L)(μ-X)Ln(NO3)2]·nS, [Zn2Dy2(μ3-L')2(μ-sal)2(NO3)(CH3OH)](NO3)·5CH3OH and [Zn2Er2(μ3-L')2(μ-sal)2(CH3OH)2](NO3)2·4CH3OH (X = benzoate, anthracenate, diclofenac, salicylate, 2,6-dihydroxybenzoate; Ln = Dy, Er; S = water, acetonitrile, methanol) were prepared from the N,N'-dimethyl-N,N'-bis(2-hydroxy-3-formyl-5-bromobenzyl)ethylenediamine compartmental ligand (H2L). Complexes 1-6 and 9-11 consist of diphenoxido-carboxylate triply bridged compounds, which differ mainly in the carboxylate bridging ligand. It should be noted that the acidic character of the salicylic acid promotes, in the presence of methanol, the methoxylation of the H2L ligand thereby yielding a hemiacetal H3L', which is able to connect the Ln(iii) ions of two ZnLn dinuclear units forming the Zn2Ln2 tetranuclear complexes 7 and 8. All compounds display SMM behaviour in the presence of an external field with effective energy barriers (Ueff) as high as 61 K. Magneto-structural data for these complexes reveal that their SMM behaviour is not only significantly affected by the type of Ln(iii) ion but also by the carboxylate bridging ligand connecting the Zn(ii) and Ln(iii) ions. Photoluminescence properties have also been accomplished, showing that the ligands are able to sensitize lanthanide centred emissions in the visible and near-infrared regions with variable capacity. Moreover, the analysis of the luminescence decay curves reveals emission lifetimes in the range of few microsecond or hundreds of nanoseconds for Dy(iii)-based or Er(iii)-based luminophores, respectively.
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Affiliation(s)
- E Echenique-Errandonea
- Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco UPV/EHU, Paseo Manuel Lardizabal, no 3, 20018, Donostia-San Sebastián, Spain
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35
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Closing the Circle of the Lanthanide-Murexide Series: Single-Molecule Magnet Behavior and Near-Infrared Emission of the NdIII Derivative. MAGNETOCHEMISTRY 2018. [DOI: 10.3390/magnetochemistry4040044] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Up to now, even if murexide-based complexometric studies are performed with all 3d or 4f ions, the crystal structures of the light-lanthanide derivatives of the lanthanide-murexide series are unknown. In this work, we report the crystal structure of the NdIII derivative named NdMurex. Contrary to all known complexes of the 3d or 4f series, a dimeric compound was obtained. As for its already reported DyIII and YbIII parents, the NdIII complex responsible for the color-change behaves as a single-molecule magnet (SMM). This behavior was observed on both the crystalline (NdMurex: Ueff = 6.20(0.80) K, 4.31 cm−1; τ0 = 2.20(0.92) × 10−5 s, Hdc = 1200 Oe) and anhydrous form (NdMurexAnhy: Ueff = 6.25(0.90) K, 4.34 cm−1; τ0 = 4.85(0.40) × 10−5 s, Hdc = 1200 Oe). The SMM behavior is reported also for the anhydrous CeIII derivative (CeMurexAnhy: Ueff = 5.40(0.75) K, 3.75 cm−1; τ0 = 3.02(1.10) × 10−5 s, Hdc = 400 Oe). The Near-Infrared Emission NIR emission was observed for NdMurexAnhy and highlights its bifunctionality.
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36
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Rousset E, Piccardo M, Boulon M, Gable RW, Soncini A, Sorace L, Boskovic C. Slow Magnetic Relaxation in Lanthanoid Crown Ether Complexes: Interplay of Raman and Anomalous Phonon Bottleneck Processes. Chemistry 2018; 24:14768-14785. [DOI: 10.1002/chem.201802779] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Indexed: 11/12/2022]
Affiliation(s)
- Elodie Rousset
- School of Chemistry University of Melbourne Victoria 3010 Australia
| | - Matteo Piccardo
- School of Chemistry University of Melbourne Victoria 3010 Australia
| | - Marie‐Emmanuelle Boulon
- UdR INSTM and Department of Chemistry “U. Schiff” University of Florence 50019 Sesto Fiorentino (FI) Italy
| | - Robert W. Gable
- School of Chemistry University of Melbourne Victoria 3010 Australia
| | | | - Lorenzo Sorace
- UdR INSTM and Department of Chemistry “U. Schiff” University of Florence 50019 Sesto Fiorentino (FI) Italy
| | - Colette Boskovic
- School of Chemistry University of Melbourne Victoria 3010 Australia
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37
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Chen YC, Huang XS, Liu JL, Tong ML. Magnetic Dynamics of a Neodymium(III) Single-Ion Magnet. Inorg Chem 2018; 57:11782-11787. [DOI: 10.1021/acs.inorgchem.8b01957] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yan-Cong Chen
- Key Lab of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| | - Xin-Shuo Huang
- Key Lab of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| | - Jun-Liang Liu
- Key Lab of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| | - Ming-Liang Tong
- Key Lab of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
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38
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Izuogu DC, Yoshida T, Zhang H, Cosquer G, Katoh K, Ogata S, Hasegawa M, Nojiri H, Damjanović M, Wernsdorfer W, Uruga T, Ina T, Breedlove BK, Yamashita M. Slow Magnetic Relaxation in a Palladium-Gadolinium Complex Induced by Electron Density Donation from the Palladium Ion. Chemistry 2018; 24:9285-9294. [PMID: 29663534 DOI: 10.1002/chem.201800699] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2018] [Revised: 04/12/2018] [Indexed: 11/06/2022]
Abstract
Incorporating palladium in the first coordination sphere of acetato-bridged lanthanoid complexes, [Pd2 Ln2 (H2 O)2 (AcO)10 ]⋅2 AcOH (Ln=Gd (1), Y (2), Gd0.4 Y1.6 (3), Eu (4)), led to significant bonding interactions between the palladium and the lanthanoid ions, which were demonstrated by experimental and theoretical methods. We found that electron density was donated from the d8 Pd2+ ion to Gd3+ ion in 1 and 3, leading to the observed slow magnetic relaxation by using local orbital locator (LOL) and X-ray absorption near-edge structure (XANES) analysis. Field-induced dual slow magnetic relaxation was observed for 1 up to 20 K. Complex 3 and frozen aqueous and acetonitrile solutions of 1 showed only one relaxation peak, which confirms the role of intermolecular dipolar interactions in slowing the magnetic relaxation of 1. The slow magnetic relaxation occurred through a combination of Orbach and Direct processes with the highest pre-exponential factor (τo =0.06 s) reported so far for a gadolinium complex exhibiting slow magnetic relaxation. The results revealed that transition metal-lanthanoid (TM-Ln) axial interactions indeed could lead to new physical properties by affecting both the electronic and magnetic states of the compounds.
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Affiliation(s)
- David C Izuogu
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Sendai, 980-8578, Japan.,Department of Pure & Industrial Chemistry, University of Nigeria, Nsukka, 410001, Nigeria.,Department of Chemistry, University of Cambridge, Lensfield Rd., Cambridge, CB2 1EW, UK
| | - Takefumi Yoshida
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Sendai, 980-8578, Japan.,Electronic Functional Macromolecules Group, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Japan
| | - Haitao Zhang
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Sendai, 980-8578, Japan
| | - Goulven Cosquer
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Sendai, 980-8578, Japan
| | - Keiichi Katoh
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Sendai, 980-8578, Japan
| | - Shuhei Ogata
- Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama-Gakuin University, Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5258, Japan
| | - Miki Hasegawa
- Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama-Gakuin University, Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5258, Japan
| | - Hiroyuki Nojiri
- Institute for Materials Research, Tohoku University, Sendai, Miyagi, 980-8577, Japan
| | - Marko Damjanović
- Physikalisches Institut and Institute of Nanotechnology, Karlsruhe Institute of Technology, Wolfgang-Gaede-Strasse 1, 76131, Karlsruhe, Germany
| | - Wolfgang Wernsdorfer
- Physikalisches Institut and Institute of Nanotechnology, Karlsruhe Institute of Technology, Wolfgang-Gaede-Strasse 1, 76131, Karlsruhe, Germany.,CNRS and Université Grenoble Alpes, Institut Néel, 38042, Grenoble, France
| | - Tomoya Uruga
- Research & Utilization Division, Japan Synchrotron Radiation Research Institute (JASRI/SPring-8), 1-1-1 Kouto, Sayo, Hyogo, 679-5198, Japan
| | - Toshiaki Ina
- Research & Utilization Division, Japan Synchrotron Radiation Research Institute (JASRI/SPring-8), 1-1-1 Kouto, Sayo, Hyogo, 679-5198, Japan
| | - Brian K Breedlove
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Sendai, 980-8578, Japan
| | - Masahiro Yamashita
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Sendai, 980-8578, Japan.,WPI-Advanced Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Sendai, 980-8577, Japan.,School of Materials Science and Engineering, Nankai University, Tianjin, 300350, China
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39
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Bazhina ES, Bovkunova AA, Medved'ko AV, Varaksina EA, Taidakov IV, Efimov NN, Kiskin MA, Eremenko IL. Lanthanide(III) (Eu, Gd, Tb, Dy) Complexes Derived from 4-(Pyridin-2-yl)methyleneamino-1,2,4-triazole: Crystal Structure, Magnetic Properties, and Photoluminescence. Chem Asian J 2018; 13:2060-2068. [PMID: 29799672 DOI: 10.1002/asia.201800511] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 05/24/2018] [Indexed: 11/11/2022]
Abstract
The reaction of lanthanide(III) nitrates with 4-(pyridin-2-yl)methyleneamino-1,2,4-triazole (L) was studied. The compounds [Ln(NO3 )3 (H2 O)3 ]⋅2 L, in which Ln=Eu (1), Gd (2), Tb (3), or Dy (4), obtained in a mixture of MeCN/EtOH have the same structure, as shown by XRD. In the crystals of these compounds, the mononuclear complex units [Ln(NO3 )3 (H2 O)3 ] are linked to L molecules through intermolecular hydrogen-bonding interactions to form a 2D polymeric supramolecular architecture. An investigation into the optical characteristics of the Eu3+ -, Tb3+ -, and Dy3+ -containing compounds (1, 3, and 4) showed that these complexes displayed metal-centered luminescence. According to magnetic measurements, compound 4 exhibits single-ion magnet behavior, with ΔEeff /kB =86 K in a field of 1500 Oe.
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Affiliation(s)
- Evgeniya S Bazhina
- N. S. Kurnakov Institute of General and Inorganic Chemistry, of the Russian Academy of Sciences, Leninsky prosp. 31, 119991, Moscow, Russia
| | - Anna A Bovkunova
- N. S. Kurnakov Institute of General and Inorganic Chemistry, of the Russian Academy of Sciences, Leninsky prosp. 31, 119991, Moscow, Russia
| | - Alexey V Medved'ko
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory 1/3, 119991, Moscow, Russia
| | - Evgeniya A Varaksina
- A. N. Nesmeyanov Institute of Organoelement Compounds, of the Russian Academy of Sciences, Vavilov St. 28, 119991, Moscow, Russia
- P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Leninsky prosp. 53, 119991, Moscow, Russia
- Moscow Institute of Physics and Technology, Institutsky Lane 9, 141701, Dolgoprudny, Moscow Region, Russia
| | - Ilya V Taidakov
- P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Leninsky prosp. 53, 119991, Moscow, Russia
| | - Nikolay N Efimov
- N. S. Kurnakov Institute of General and Inorganic Chemistry, of the Russian Academy of Sciences, Leninsky prosp. 31, 119991, Moscow, Russia
| | - Mikhail A Kiskin
- N. S. Kurnakov Institute of General and Inorganic Chemistry, of the Russian Academy of Sciences, Leninsky prosp. 31, 119991, Moscow, Russia
| | - Igor L Eremenko
- N. S. Kurnakov Institute of General and Inorganic Chemistry, of the Russian Academy of Sciences, Leninsky prosp. 31, 119991, Moscow, Russia
- A. N. Nesmeyanov Institute of Organoelement Compounds, of the Russian Academy of Sciences, Vavilov St. 28, 119991, Moscow, Russia
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40
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Long J, Guari Y, Ferreira RA, Carlos LD, Larionova J. Recent advances in luminescent lanthanide based Single-Molecule Magnets. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.02.019] [Citation(s) in RCA: 150] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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41
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Jassal AK, Sran BS, Suffren Y, Bernot K, Pointillart F, Cador O, Hundal G. Structural diversity and photo-physical and magnetic properties of dimeric to 1D polymeric coordination polymers of lighter lanthanide(iii) dinitrobenzoates. Dalton Trans 2018. [PMID: 29537422 DOI: 10.1039/c7dt04596d] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Single crystal diffraction studies reveal the formation of the following 10 new complexes of lighter Ln(iii) ions with general formulas {[Ln(μ2-L1)3·(H2O)2]·H2O}n (Ln = Nd (1) and Eu (2)), [Nd(μ2-L2)2·(CH3COO)·(H2O)2]n (3), [Ln2(μ2-L2)5·(L2)·(H2O)4]n (Ln = Sm (4), Ce (5), and Pr (6)), [La2(μ2-L2)6·(H2O)3·(DMF)]n (7) (DMF = dimethylformamide), [Ln(μ2-L2)2·(L2)·(H2O)3]2 (Ln = Eu (8) and Gd (9)) and [Gd(L2)·(CH3COO)2·(H2O)2]2 (10), where L1 and L2 are anions of 3,5- and 2,4-dinitrobenzoic acid, respectively. Complexes 1-7 are 1D coordination polymers, while 8-10 are dinuclear complexes. The luminescence properties of Nd(iii) and Eu(iii) analogues displayed metal-centred emission with L1 exhibiting weak but more efficient sensitization than L2. A study of the magnetic properties of the compounds clearly demonstrated the field-induced single ion magnet behaviour of the Nd(iii) compounds 1 and 3. Their behaviour has been compared to previously reported analogous Nd(iii) complexes and the role of the lattice solvent and polymorphism on the magnetic behaviour has been evaluated.
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Affiliation(s)
- Amanpreet Kaur Jassal
- Department of Chemistry, UGC sponsored centre of advance studies-II, Guru Nanak Dev University, Amritsar-143005, Punjab, India.
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42
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Velkos G, Krylov DS, Kirkpatrick K, Liu X, Spree L, Wolter AUB, Büchner B, Dorn HC, Popov AA. Giant exchange coupling and field-induced slow relaxation of magnetization in Gd 2@C 79N with a single-electron Gd-Gd bond. Chem Commun (Camb) 2018; 54:2902-2905. [PMID: 29497728 PMCID: PMC5885278 DOI: 10.1039/c8cc00112j] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Accepted: 02/13/2018] [Indexed: 12/18/2022]
Abstract
Magnetic properties of the azafullerene Gd2@C79N are studied by SQUID magnetometry. The effective exchange coupling constant jGd,e between the Gd spins and the spin of unpaired electron residing on the single-electron Gd-Gd bond is determined to be 170 ± 10 cm-1. Low temperature AC measurements revealed field-induced millisecond-long relaxation of magnetization.
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Affiliation(s)
- G Velkos
- Leibniz Institute for Solid State and Materials Research, Dresden 01069, Germany.
| | - D S Krylov
- Leibniz Institute for Solid State and Materials Research, Dresden 01069, Germany.
| | - K Kirkpatrick
- Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA
| | - X Liu
- Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA
| | - L Spree
- Leibniz Institute for Solid State and Materials Research, Dresden 01069, Germany.
| | - A U B Wolter
- Leibniz Institute for Solid State and Materials Research, Dresden 01069, Germany.
| | - B Büchner
- Leibniz Institute for Solid State and Materials Research, Dresden 01069, Germany.
| | - H C Dorn
- Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA and Virginia Tech Carilion Research Institute, Roanoke, Virginia 24016, USA.
| | - A A Popov
- Leibniz Institute for Solid State and Materials Research, Dresden 01069, Germany.
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43
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Demir S, Meihaus KR, Long JR. Slow magnetic relaxation in a neodymium metallocene tetraphenylborate complex. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2017.10.035] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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44
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Huang WH, Li JZ, Gao LS, Wang YX, Liu SY, Jiang M, Liu T, Wang YY. The influence of structural isomerism on fluorescence and organic dye selective adsorption in two complexes based on flexible ligands. Dalton Trans 2018; 45:15060-15066. [PMID: 27711684 DOI: 10.1039/c6dt02090a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Based on Cd(NO3)2·4H2O and 4,4'-((5-carboxy-1,3-phenylene)bis(oxy))dibenzoic acid (H3cpbda), two isomeric coordination polymers, {[Cd1.5(cpbda)(bpa)(H2O)2]·1.5H2O}n (1), [Cd(H2cpbda)2(bpa)0.5(H2O)]n (2), were synthesized by using different solvent-systems. The complexes were characterized by single-crystal X-ray diffraction, IR spectroscopy, powder X-ray diffraction, and thermogravimetric analysis. Owing to the obvious structural difference between the two isomeric complexes, the further fluorescence sensing and dye selection and adsorption were investigated. The 3D tight stacking structure of 1 strengthened the fluorescence emission and the loose 2D layer structure of 2 generated the active selection and adsorption of the Malachite Green Oxalate (MGO) dye.
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Affiliation(s)
- Wen-Huan Huang
- College of Chemistry & Chemical Engineering, Shaanxi University of Science & Techology, Xi'an, Shaanxi 710021, China.
| | - Jia-Zhi Li
- College of Chemistry & Chemical Engineering, Shaanxi University of Science & Techology, Xi'an, Shaanxi 710021, China.
| | - Lu-Sha Gao
- College of Chemistry & Chemical Engineering, Shaanxi University of Science & Techology, Xi'an, Shaanxi 710021, China.
| | - Yan-Xin Wang
- College of Chemistry & Chemical Engineering, Shaanxi University of Science & Techology, Xi'an, Shaanxi 710021, China.
| | - Shu-Ya Liu
- College of Chemistry & Chemical Engineering, Shaanxi University of Science & Techology, Xi'an, Shaanxi 710021, China.
| | - Min Jiang
- College of Chemistry & Chemical Engineering, Shaanxi University of Science & Techology, Xi'an, Shaanxi 710021, China.
| | - Tong Liu
- College of Chemistry & Chemical Engineering, Shaanxi University of Science & Techology, Xi'an, Shaanxi 710021, China.
| | - Yao-Yu Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, China
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Pointillart F, Cador O, Le Guennic B, Ouahab L. Uncommon lanthanide ions in purely 4f Single Molecule Magnets. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2016.12.017] [Citation(s) in RCA: 211] [Impact Index Per Article: 30.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Wu SQ, Miyazaki Y, Nakano M, Su SQ, Yao ZS, Kou HZ, Sato O. Slow Magnetic Relaxation in a Mononuclear Ruthenium(III) Complex. Chemistry 2017; 23:10028-10033. [PMID: 28618082 DOI: 10.1002/chem.201702047] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Indexed: 11/10/2022]
Abstract
The development of magnetic molecules with long spin reversal/decoherence times highly depends on the understanding of relaxation behavior under different external conditions. Herein, a magnetic study on a RuIII complex (1) is presented. Detailed analysis of the relaxation time and the magneto-heat capacity data suggests that the resonant phonon trapping process dominates the magnetic relaxation in the crystalline sample of 1, slowing down the spin relaxation rate, as further confirmed by the measurements on a ground sample and frozen solution. Thus, it provides a rare example showing that 4d metal-centered mononuclear compounds without second-order anisotropy can display slow magnetic relaxation.
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Affiliation(s)
- Shu-Qi Wu
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka Nishi-ku, Fukuoka, 819-0395, Japan
| | - Yuji Miyazaki
- Research Center for Structural Thermodynamics, Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043, Japan
| | - Motohiro Nakano
- Research Center for Structural Thermodynamics, Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043, Japan
| | - Sheng-Qun Su
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka Nishi-ku, Fukuoka, 819-0395, Japan
| | - Zi-Shuo Yao
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka Nishi-ku, Fukuoka, 819-0395, Japan
| | - Hui-Zhong Kou
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Osamu Sato
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka Nishi-ku, Fukuoka, 819-0395, Japan
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Kanetomo T, Kihara T, Miyake A, Matsuo A, Tokunaga M, Kindo K, Nojiri H, Ishida T. Giant Exchange Coupling Evidenced with a Magnetization Jump at 52 T for a Gadolinium-Nitroxide Chelate. Inorg Chem 2017; 56:3310-3314. [PMID: 28281348 DOI: 10.1021/acs.inorgchem.6b02685] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The Gd-radical complex [GdIII(hfac)3(6bpyNO)] (6bpyNO = 2,2'-bipyridin-6-yl tert-butyl nitroxide; Hhfac = 1,1,1,5,5,5-hexafluoropentane-2,4-dione) showed a magnetization jump at 52 T observed in a pulsed-field facility, corresponding to an exchange coupling constant of -17.4 K. Furthermore, hysteretic behavior due to a relatively slow magnetization reversal was recorded around 2 T. From the high-frequency EPR study, the exchange coupling between Gd and radical spins accompanies an anisotropic character, which is responsible for both the broad jump and the slow magnetization reversal.
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Affiliation(s)
- Takuya Kanetomo
- Department of Engineering Science, The University of Electro-Communications , Chofu, Tokyo 182-8585, Japan
| | - Takumi Kihara
- Institute for Materials Research, Tohoku University , Sendai, Miyagi 980-8577, Japan
| | - Atsushi Miyake
- Institute for Solid State Physics, The University of Tokyo , Kashiwa, Chiba 277-8581, Japan
| | - Akira Matsuo
- Institute for Solid State Physics, The University of Tokyo , Kashiwa, Chiba 277-8581, Japan
| | - Masashi Tokunaga
- Institute for Solid State Physics, The University of Tokyo , Kashiwa, Chiba 277-8581, Japan
| | - Koichi Kindo
- Institute for Solid State Physics, The University of Tokyo , Kashiwa, Chiba 277-8581, Japan
| | - Hiroyuki Nojiri
- Institute for Materials Research, Tohoku University , Sendai, Miyagi 980-8577, Japan
| | - Takayuki Ishida
- Department of Engineering Science, The University of Electro-Communications , Chofu, Tokyo 182-8585, Japan
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Zabala-Lekuona A, Cepeda J, Oyarzabal I, Rodríguez-Diéguez A, García JA, Seco JM, Colacio E. Rational design of triple-bridged dinuclear ZnIILnIII-based complexes: a structural, magnetic and luminescence study. CrystEngComm 2017. [DOI: 10.1039/c6ce02240e] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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49
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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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50
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Gavrikov AV, Koroteev PS, Efimov NN, Dobrokhotova ZV, Ilyukhin AB, Kostopoulos AK, Ariciu AM, Novotortsev VM. Novel mononuclear and 1D-polymeric derivatives of lanthanides and (η6-benzoic acid)tricarbonylchromium: synthesis, structure and magnetism. Dalton Trans 2017; 46:3369-3380. [DOI: 10.1039/c6dt04895a] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Novel derivatives of lanthanides and (η6-benzoic acid)tricarbonylchromium were synthesized and characterized; complexes of Tb, Dy, Er and Yb exhibit SMM behavior.
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Affiliation(s)
- Andrey V. Gavrikov
- N.S. Kurnakov Institute of General and Inorganic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| | - Pavel S. Koroteev
- N.S. Kurnakov Institute of General and Inorganic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| | - Nikolay N. Efimov
- N.S. Kurnakov Institute of General and Inorganic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| | - Zhanna V. Dobrokhotova
- N.S. Kurnakov Institute of General and Inorganic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| | - Andrey B. Ilyukhin
- N.S. Kurnakov Institute of General and Inorganic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| | - Andreas K. Kostopoulos
- School of Chemistry and Photon Science Institute
- The University of Manchester
- Manchester
- UK
| | - Ana-Maria Ariciu
- School of Chemistry and Photon Science Institute
- The University of Manchester
- Manchester
- UK
| | - Vladimir M. Novotortsev
- N.S. Kurnakov Institute of General and Inorganic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
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