301
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Huang XC, Zhou C, Shao D, Wang XY. Field-Induced Slow Magnetic Relaxation in Cobalt(II) Compounds with Pentagonal Bipyramid Geometry. Inorg Chem 2014; 53:12671-3. [DOI: 10.1021/ic502006s] [Citation(s) in RCA: 137] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Xing-Cai Huang
- State Key Laboratory of Coordination Chemistry, School
of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Chun Zhou
- State Key Laboratory of Coordination Chemistry, School
of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Dong Shao
- State Key Laboratory of Coordination Chemistry, School
of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Xin-Yi Wang
- State Key Laboratory of Coordination Chemistry, School
of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
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302
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Nedelko N, Kornowicz A, Justyniak I, Aleshkevych P, Prochowicz D, Krupiński P, Dorosh O, Ślawska-Waniewska A, Lewiński J. Supramolecular Control over Molecular Magnetic Materials: γ-Cyclodextrin-Templated Grid of Cobalt(II) Single-Ion Magnets. Inorg Chem 2014; 53:12870-6. [DOI: 10.1021/ic501870h] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Natalia Nedelko
- Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland
| | - Arkadiusz Kornowicz
- Department of Chemistry, Warsaw University of Technology, Noakowskiego
3, 00−664 Warsaw, Poland
| | - Iwona Justyniak
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Pavlo Aleshkevych
- Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland
| | - Daniel Prochowicz
- Department of Chemistry, Warsaw University of Technology, Noakowskiego
3, 00−664 Warsaw, Poland
| | - Piotr Krupiński
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Orest Dorosh
- National Center for Nuclear Research, ul. Sołtana 7, 05-400 Otwock, Poland
| | - Anna Ślawska-Waniewska
- Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland
| | - Janusz Lewiński
- Department of Chemistry, Warsaw University of Technology, Noakowskiego
3, 00−664 Warsaw, Poland
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
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303
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Zhu YY, Yin TT, Liu CW, Gao C, Wu ZQ, Zhang YQ, Wang BW, Gao S. Field-induced slow magnetic relaxation in a hydrogen-bonding linked Co(II) 1D supramolecular coordination polymer. Supramol Chem 2014. [DOI: 10.1080/10610278.2014.975703] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Yuan-Yuan Zhu
- Key Laboratory of Advanced Functional Materials and Devices, Anhui Province, and School of Chemical Engineering, Hefei University of Technology, Hefei 230009, P.R. China
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P.R. China
| | - Ting-Ting Yin
- Key Laboratory of Advanced Functional Materials and Devices, Anhui Province, and School of Chemical Engineering, Hefei University of Technology, Hefei 230009, P.R. China
| | - Chang-Wei Liu
- Key Laboratory of Advanced Functional Materials and Devices, Anhui Province, and School of Chemical Engineering, Hefei University of Technology, Hefei 230009, P.R. China
| | - Chen Gao
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P.R. China
| | - Zong-Quan Wu
- Key Laboratory of Advanced Functional Materials and Devices, Anhui Province, and School of Chemical Engineering, Hefei University of Technology, Hefei 230009, P.R. China
| | - Yi-Quan Zhang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P.R. China
- Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, P.R. China
| | - Bing-Wu Wang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P.R. China
| | - Song Gao
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P.R. China
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304
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Cornia A, Rigamonti L, Boccedi S, Clérac R, Rouzières M, Sorace L. Magnetic blocking in extended metal atom chains: a pentachromium(ii) complex behaving as a single-molecule magnet. Chem Commun (Camb) 2014; 50:15191-4. [DOI: 10.1039/c4cc06693f] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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305
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Baldoví JJ, Clemente-Juan JM, Coronado E, Gaita-Ariño A. Molecular Anisotropy Analysis of Single-Ion Magnets Using an Effective Electrostatic Model. Inorg Chem 2014; 53:11323-7. [DOI: 10.1021/ic5020253] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- José J. Baldoví
- Instituto de Ciencia
Molecular (ICMol), Universidad de Valencia, C/Catedrático José
Beltrán, 2, E-46980 Paterna, Spain
| | - Juan M. Clemente-Juan
- Instituto de Ciencia
Molecular (ICMol), Universidad de Valencia, C/Catedrático José
Beltrán, 2, E-46980 Paterna, Spain
| | - Eugenio Coronado
- Instituto de Ciencia
Molecular (ICMol), Universidad de Valencia, C/Catedrático José
Beltrán, 2, E-46980 Paterna, Spain
| | - Alejandro Gaita-Ariño
- Instituto de Ciencia
Molecular (ICMol), Universidad de Valencia, C/Catedrático José
Beltrán, 2, E-46980 Paterna, Spain
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306
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Fataftah MS, Zadrozny JM, Rogers DM, Freedman DE. A Mononuclear Transition Metal Single-Molecule Magnet in a Nuclear Spin-Free Ligand Environment. Inorg Chem 2014; 53:10716-21. [DOI: 10.1021/ic501906z] [Citation(s) in RCA: 120] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Majed S. Fataftah
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Joseph M. Zadrozny
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Dylan M. Rogers
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Danna E. Freedman
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
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307
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Dreiser J, Westerström R, Zhang Y, Popov AA, Dunsch L, Krämer K, Liu S, Decurtins S, Greber T. The Metallofullerene Field‐Induced Single‐Ion Magnet HoSc
2
N@C
80. Chemistry 2014; 20:13536-40. [DOI: 10.1002/chem.201403042] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Revised: 06/11/2014] [Indexed: 11/05/2022]
Affiliation(s)
- Jan Dreiser
- Institute of Condensed Matter Physics, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne (Switzerland)
- Swiss Light Source, Paul Scherrer Institut, 5232 Villigen PSI (Switzerland)
| | - Rasmus Westerström
- Physik‐Institut, Universität Zürich, 8057 Zürich (Switzerland)
- Swiss Light Source, Paul Scherrer Institut, 5232 Villigen PSI (Switzerland)
- Department of Physics and Astronomy, Uppsala University, 751 20 Uppsala (Sweden)
| | - Yang Zhang
- Department of Electrochemistry and Conducting Polymers, Leibniz Institute of Solid State and Materials Research, 01069 Dresden (Germany)
| | - Alexey A. Popov
- Department of Electrochemistry and Conducting Polymers, Leibniz Institute of Solid State and Materials Research, 01069 Dresden (Germany)
| | - Lothar Dunsch
- Department of Electrochemistry and Conducting Polymers, Leibniz Institute of Solid State and Materials Research, 01069 Dresden (Germany)
| | - Karl Krämer
- Departement für Chemie und Biochemie, Universität Bern, 3012 Bern (Switzerland)
| | - Shi‐Xia Liu
- Departement für Chemie und Biochemie, Universität Bern, 3012 Bern (Switzerland)
| | - Silvio Decurtins
- Departement für Chemie und Biochemie, Universität Bern, 3012 Bern (Switzerland)
| | - Thomas Greber
- Physik‐Institut, Universität Zürich, 8057 Zürich (Switzerland)
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308
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Baldoví JJ, Clemente-Juan JM, Coronado E, Duan Y, Gaita-Ariño A, Giménez-Saiz C. Construction of a general library for the rational design of nanomagnets and spin qubits based on mononuclear f-block complexes. The polyoxometalate case. Inorg Chem 2014; 53:9976-80. [PMID: 25156530 DOI: 10.1021/ic501867d] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
This paper belongs to a series of contributions aiming at establishing a general library that helps in the description of the crystal field (CF) effect of any ligand on the splitting of the J ground states of mononuclear f-element complexes. Here, the effective parameters associated with the oxo ligands (effective charges and metal-ligand distances) are extracted from the study of the magnetic properties of the first two families of single-ion magnets based on lanthanoid polyoxometalates (POMs), formulated as [Ln(W5O18)2](9-) and [Ln(β2-SiW11O39)2](13-) (Ln = Tb, Dy, Ho, Er, Tm, Yb). This effective CF approach provides a good description of the lowest-lying magnetic levels and the associated wave functions of the studied systems, which is fully consistent with the observed magnetic behavior. In order to demonstrate the predictive character of this model, we have extended our model in a first step to calculate the properties of the POM complexes of the early 4f-block metals. In doing so, [Nd(W5O18)2](9-) has been identified as a suitable candidate to exhibit SMM behavior. Magnetic experiments have confirmed such a prediction, demonstrating the usefulness of this strategy for the directed synthesis of new nanomagnets. Thus, with an effective barrier of 51.4 cm(-1) under an applied dc field of 1000 Oe, this is the second example of a Nd(3+)-based single-ion magnet.
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Affiliation(s)
- José J Baldoví
- Instituto de Ciencia Molecular, Universidad de Valencia Catedrático José Beltrán no. 2, Paterna, Valencia 46980, Spain
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309
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Kazin PE, Zykin MA, Zubavichus YV, Magdysyuk OV, Dinnebier RE, Jansen M. Identification of the chromophore in the apatite pigment [Sr10(PO4)6(Cu(x)OH(1-x-y))2]: linear OCuO- featuring a resonance Raman effect, an extreme magnetic anisotropy, and slow spin relaxation. Chemistry 2014; 20:165-78. [PMID: 24516889 DOI: 10.1002/chem.201303136] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A new chromophore has been identified in copper-doped apatite pigments having the general composition [Sr(10)(PO(4))(6)(Cu(x)OH(1-x-y))(2)], in which x=0.1, 0.3 and y=0.01-0.42. By using X-ray absorption spectroscopy, low-temperature magnetization measurements, and synchrotron X-ray powder structure refinement, it has been shown that the oxygenated compounds contain simultaneously diamagnetic Cu(1+) and paramagnetic Cu(3+) with S=1. Cu(3+) is located at the same crystallographic position as Cu(1+), being linearly coordinated by two oxygen atoms and forming the OCuO(-) anion. The Raman spectroscopy study of [A(10)(PO(4))(6)(Cu(x)OH(1-x-y))(2)], in which A=Ca, Sr, Ba, reveals resonance bands at 651-656 cm(-1) assigned to the symmetric stretching vibration (ν(1)) of OCuO(-). The strontium apatite pigment exhibits a strong paramagnetic anisotropy with an unprecedentedly large negative zero-field splitting parameter (D) of ≈-400 cm(-1). The extreme magnetic anisotropy causes slow magnetization relaxation with relaxation times (τ) up to 0.3 s at T=2 K, which relates the compounds to single-ion magnets. At low temperature, τ is limited by a spin quantum-tunneling, whereas at high temperature a thermally activated relaxation prevails with U(eff)≈48 cm(-1). Strong dependence of τ on the paramagnetic center concentration at low temperature suggests that the spin-spin relaxation dominates in the spin quantum-tunneling process. The compound is the first example of a d-metal-based single-ion magnet with S=1, the smallest spin at which an energy barrier arises for the spin flipping.
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310
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Chen L, Wang J, Wei JM, Wernsdorfer W, Chen XT, Zhang YQ, Song Y, Xue ZL. Slow magnetic relaxation in a mononuclear eight-coordinate cobalt(II) complex. J Am Chem Soc 2014; 136:12213-6. [PMID: 25119268 DOI: 10.1021/ja5051605] [Citation(s) in RCA: 140] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The quest for the single-molecular magnets (SMMs) based on mononuclear transition-metal complexes is focused on the low-coordinate species. No transition-metal complex with a coordination number of eight has been shown to exhibit SMM properties. Here the magnetic studies have been carried out for a mononuclear, eight-coordinate cobalt(II)-12-crown-4 (12C4) complex [Co(II)(12C4)2](I3)2(12C4) (1) with a large axial zero-field splitting. Magnetic measurements show field-induced, slow magnetic relaxation under an applied field of 500 Oe at low temperature. The magnetic relaxation time τ was fitted by the Arrhenius model to afford an energy barrier of Ueff = 17.0 cm(-1) and a preexponential factor of τ0 = 1.5 × 10(-6) s. The work here presents the first example of the eight-coordinate, mononuclear, 3d metal complex exhibiting the slow magnetic relaxation.
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Affiliation(s)
- Lei Chen
- State Key Laboratory of Coordination Chemistry, Nanjing National Laboratory of Microstructures, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, China
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311
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Fukuda T, Shigeyoshi N, Yamamura T, Ishikawa N. Magnetic Relaxations Arising from Spin–Phonon Interactions in the Nonthermally Activated Temperature Range for a Double-Decker Terbium Phthalocyanine Single Molecule Magnet. Inorg Chem 2014; 53:9080-6. [DOI: 10.1021/ic501028f] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Takamitsu Fukuda
- Department of Chemistry,
Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Natsuko Shigeyoshi
- Department of Chemistry,
Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Tomoo Yamamura
- Laboratory
of Alpha-Ray Emitters, Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - Naoto Ishikawa
- Department of Chemistry,
Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
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312
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Rajnák C, Titiš J, Fuhr O, Ruben M, Boča R. Single-molecule magnetism in a pentacoordinate cobalt(II) complex supported by an antenna ligand. Inorg Chem 2014; 53:8200-2. [PMID: 25084067 DOI: 10.1021/ic501524a] [Citation(s) in RCA: 106] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Pentacoordinate complex [CoL(3)Cl2] with a tridentate antenna-like ligand L(3) forms a dimer held by short π-π stacking with head-to-head contacts at 3.4 Å. The direct-current (dc) magnetic susceptibility and magnetization data confirm weak ferromagnetic interaction and a large-magnetic anisotropy, D/hc = 150 cm(-1) and E/hc = 11.6 cm(-1). The system shows superparamagnetic behavior at low temperature that depends upon the applied magnetic field. At Bdc = 0.2 T, a low-frequency peak at the out-of-phase susceptibility is seen (ν ∼ 0.3 Hz), whereas the onset of the second peak appears at ν > 1500 Hz, indicating the existence of two slow relaxation processes.
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Affiliation(s)
- Cyril Rajnák
- Department of Chemistry, FPV, University of SS Cyril and Methodius , 917 01 Trnava, Slovakia
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313
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Chen Q, Meng YS, Zhang YQ, Jiang SD, Sun HL, Gao S. A 1D dysprosium chain with slow magnetic relaxation constructed from a pyridine-N-oxide ligand. Chem Commun (Camb) 2014; 50:10434-7. [DOI: 10.1039/c4cc03536d] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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314
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Singh SK, Gupta T, Badkur P, Rajaraman G. Magnetic anisotropy of mononuclear Ni(II) complexes: on the importance of structural diversity and the structural distortions. Chemistry 2014; 20:10305-13. [PMID: 25042299 DOI: 10.1002/chem.201402694] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Indexed: 11/06/2022]
Abstract
Mononuclear Ni(II) complexes are particularly attractive in the area of single-molecule magnets as the axial zero-field splitting (D) for the Ni(II) complexes is in the range of -200 to +200 cm(-1) . Despite this advantage, very little is known on the origin of anisotropy across various coordination ligands, coordination numbers, and particularly what factors influence the D parameter in these complexes. To answer some of these questions, herein we have undertaken a detailed study of a series of mononuclear Ni(II) complexes with ab initio calculations. Our results demonstrate that three prominent spin-conserved low-lying d-d transitions contribute significantly to the D value. Variation in the sign and the magnitude of D values are found to correlate to the specific structural distortions. Apart from the metal-ligand bond lengths, two different parameters, namely, Δα and Δβ, which are correlated to the cis angles present in the coordination environment, are found to significantly influence the axial D values. Developed magneto-structural D correlations suggest that the D values can be enhanced significantly by fine tuning the structural distortion in the coordination environment. Calculations performed on a series of Ni(II) models with coordination numbers two to six unfold an interesting observation-the D parameter increases significantly upon a reduction in coordination number compared with a reference octahedral coordination. Besides, if high symmetry is maintained, even larger coordination numbers yield large D values.
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Affiliation(s)
- Saurabh Kumar Singh
- Department of Chemistry, Indian Institute of Technology Bombay, Powai,Mumbai,Maharashtra,India-400 076, Fax: (+91) 22-2576-7152
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315
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Cucos P, Tuna F, Sorace L, Matei I, Maxim C, Shova S, Gheorghe R, Caneschi A, Hillebrand M, Andruh M. Magnetic and Luminescent Binuclear Double-Stranded Helicates. Inorg Chem 2014; 53:7738-47. [DOI: 10.1021/ic501051q] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Paula Cucos
- Faculty
of Chemistry, Inorganic Chemistry Laboratory, University of Bucharest, Str. Dumbrava Rosie no. 23, 020464 Bucharest, Romania
| | - Floriana Tuna
- National
EPR Research Facility, School of Chemistry and Photon Science Institute, University of Manchester, Oxford Road, Manchester, M13 9PL, U.K
| | - Lorenzo Sorace
- Department
of Chemistry “U. Schiff” and INSTM RU, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy
| | - Iulia Matei
- Department
of Physical Chemistry, University of Bucharest, Bd. Regina Elisabeta 4-12, 030018 Bucharest, Romania
| | - Catalin Maxim
- Faculty
of Chemistry, Inorganic Chemistry Laboratory, University of Bucharest, Str. Dumbrava Rosie no. 23, 020464 Bucharest, Romania
| | - Sergiu Shova
- “Petru Poni” Institute of Macromolecular Chemistry, Aleea Grigore Ghica Voda 41A, RO-700487 Iasi, Romania
| | - Ruxandra Gheorghe
- Faculty
of Chemistry, Inorganic Chemistry Laboratory, University of Bucharest, Str. Dumbrava Rosie no. 23, 020464 Bucharest, Romania
| | - Andrea Caneschi
- Department
of Chemistry “U. Schiff” and INSTM RU, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy
| | - Mihaela Hillebrand
- Department
of Physical Chemistry, University of Bucharest, Bd. Regina Elisabeta 4-12, 030018 Bucharest, Romania
| | - Marius Andruh
- Faculty
of Chemistry, Inorganic Chemistry Laboratory, University of Bucharest, Str. Dumbrava Rosie no. 23, 020464 Bucharest, Romania
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316
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Kuzmann E, Zoppellaro G, Pechousek J, Cuda J, Klencsár Z, Homonnay Z, Tucek J, Szalay R, Pápai M, Machala L, Zboril R. Ferromagnetic Coupling in an Fe[C(SiMe
3
)
3
]
2
/Ferrihydrite Hetero‐Mixture Molecular Magnet. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402033] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ernő Kuzmann
- Institute of Chemistry, Eötvös Loránd University, 1117 Budapest, Hungary, http://www.elte.hu
| | - Giorgio Zoppellaro
- Regional Centre of Advanced Technologies and Materials, Palacky University in Olomouc, 78371 Olomouc, Czech Republic, http://www.rcptm.com
| | - Jiri Pechousek
- Regional Centre of Advanced Technologies and Materials, Palacky University in Olomouc, 78371 Olomouc, Czech Republic, http://www.rcptm.com
| | - Jan Cuda
- Regional Centre of Advanced Technologies and Materials, Palacky University in Olomouc, 78371 Olomouc, Czech Republic, http://www.rcptm.com
| | - Zoltán Klencsár
- Institute of Molecular Pharmacology, Research Centre for Natural Sciences, HAS, 1117 Budapest, Hungary
| | - Zoltán Homonnay
- Institute of Chemistry, Eötvös Loránd University, 1117 Budapest, Hungary, http://www.elte.hu
| | - Jiri Tucek
- Regional Centre of Advanced Technologies and Materials, Palacky University in Olomouc, 78371 Olomouc, Czech Republic, http://www.rcptm.com
| | - Roland Szalay
- Institute of Chemistry, Eötvös Loránd University, 1117 Budapest, Hungary, http://www.elte.hu
| | - Mátyás Pápai
- Institute of Nuclear and Particle Research, Wigner Research Centre for Physics, HAS, 1121 Budapest, Hungary
| | - Libor Machala
- Regional Centre of Advanced Technologies and Materials, Palacky University in Olomouc, 78371 Olomouc, Czech Republic, http://www.rcptm.com
| | - Radek Zboril
- Regional Centre of Advanced Technologies and Materials, Palacky University in Olomouc, 78371 Olomouc, Czech Republic, http://www.rcptm.com
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317
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Lee WT, Jeon IR, Xu S, Dickie DA, Smith JM. Low-Coordinate Iron(II) Complexes of a Bulky Bis(carbene)borate Ligand. Organometallics 2014. [DOI: 10.1021/om500417y] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Wei-Tsung Lee
- Department of Chemistry, Indiana University, 800 East
Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Ie-Rang Jeon
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Song Xu
- Department of Chemistry, Indiana University, 800 East
Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Diane A. Dickie
- Department of Chemistry and Chemical
Biology, The University of New Mexico, 300 Terrace Street NE, Albuquerque, New Mexico 87131, United States
| | - Jeremy M. Smith
- Department of Chemistry, Indiana University, 800 East
Kirkwood Avenue, Bloomington, Indiana 47405, United States
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318
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Karasawa S, Nakano K, Yoshihara D, Yamamoto N, Tanokashira JI, Yoshizaki T, Inagaki Y, Koga N. Magnetic Properties of 1:2 Mixed Cobalt(II) Salicylaldehyde Schiff-Base Complexes with Pyridine Ligands Carrying High-Spin Carbenes (Scar = 2/2, 4/2, 6/2, and 8/2) in Dilute Frozen Solutions: Role of Organic Spin in Heterospin Single-Molecule Magnets. Inorg Chem 2014; 53:5447-57. [DOI: 10.1021/ic403074d] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Satoru Karasawa
- Graduate
School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582 Japan
| | - Kimihiro Nakano
- Graduate
School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582 Japan
| | - Daisuke Yoshihara
- Graduate
School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582 Japan
| | - Noriko Yamamoto
- Graduate
School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582 Japan
| | - Jun-ichi Tanokashira
- Graduate
School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582 Japan
| | - Takahito Yoshizaki
- Graduate
School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582 Japan
| | - Yuji Inagaki
- Department
of Applied Quantum Physics, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 812-0395 Japan
| | - Noboru Koga
- Graduate
School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582 Japan
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319
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Baldoví JJ, Coronado E, Gaita-Ariño A, Gamer C, Giménez-Marqués M, Mínguez Espallargas G. A SIM-MOF: three-dimensional organisation of single-ion magnets with anion-exchange capabilities. Chemistry 2014; 20:10695-702. [PMID: 24804629 DOI: 10.1002/chem.201402255] [Citation(s) in RCA: 101] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Indexed: 11/10/2022]
Abstract
The formation of a metal-organic framework (MOF) with nodes that have single-molecule magnet (SMM) behaviour has been achieved by using mononuclear lanthanoid analogues, also known as single-ion magnets (SIMs), which enormously simplifies the challenging issue of making SMM-MOFs. Here we present a rational design of a family of MOFs, [Ln(bipyNO)4](TfO)3⋅x solvent (Ln=Tb (1); Dy (2); Ho (3); Er (4); TfO=triflate), in which the lanthanoid centres have an square-antiprismatic coordination environment suitable for SIM behaviour. Magnetic measurements confirm the existence of slow magnetic relaxation typical of SMMs, which has been rationalised by means of a radial effective charge model. In addition, we have explored the incorporation of bulky polyoxometalates (POMs) into the cavities of the SIM-MOF by anion exchange, finding that they do not interfere with the slow magnetic relaxation. This demonstrates the robustness of the frameworks and opens the possibility of incorporating non-innocent anions.
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Affiliation(s)
- José J Baldoví
- Instituto de Ciencia Molecular (ICMol), Universidad de Valencia c/Catedrático José Beltrán, 2, 46980 Paterna (Spain)
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320
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Ruamps R, Batchelor LJ, Guillot R, Zakhia G, Barra AL, Wernsdorfer W, Guihéry N, Mallah T. Ising-type magnetic anisotropy and single molecule magnet behaviour in mononuclear trigonal bipyramidal Co(ii) complexes. Chem Sci 2014. [DOI: 10.1039/c4sc00984c] [Citation(s) in RCA: 134] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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321
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Lazzarini IC, Funes AV, Carrella L, Sorace L, Rentschler E, Alborés P. Magnetic Study of a Pentanuclear {Co2IIICo3II} Cluster with a Bent {CoII3} Motif. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402089] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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322
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Singh SK, Rajaraman G. Probing the Origin of Magnetic Anisotropy in a Dinuclear {MnIIICuII} Single-Molecule Magnet: The Role of Exchange Anisotropy. Chemistry 2014; 20:5214-8. [DOI: 10.1002/chem.201304357] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Revised: 02/27/2014] [Indexed: 11/07/2022]
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323
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Pedersen KS, Bendix J, Clérac R. Single-molecule magnet engineering: building-block approaches. Chem Commun (Camb) 2014; 50:4396-415. [PMID: 24626635 DOI: 10.1039/c4cc00339j] [Citation(s) in RCA: 235] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Tailoring the specific magnetic properties of any material relies on the topological control of the constituent metal ion building blocks. Although this general approach does not seem to be easily applied to traditional inorganic bulk magnets, coordination chemistry offers a unique tool to delicately tune, for instance, the properties of molecules that behave as "magnets", the so-called single-molecule magnets (SMMs). Although many interesting SMMs have been prepared by a more or less serendipitous approach, the assembly of predesigned, isolatable molecular entities into higher nuclearity complexes constitutes an elegant and fascinating strategy. This Feature article focuses on the use of building blocks or modules (both terms being used indiscriminately) to direct the structure, and therefore also the magnetic properties, of metal ion complexes exhibiting SMM behaviour.
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324
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Jesche A, McCallum RW, Thimmaiah S, Jacobs JL, Taufour V, Kreyssig A, Houk RS, Bud'ko SL, Canfield PC. Giant magnetic anisotropy and tunnelling of the magnetization in Li₂(Li(1-x)Fe(x))N. Nat Commun 2014; 5:3333. [PMID: 24566374 DOI: 10.1038/ncomms4333] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Accepted: 01/28/2014] [Indexed: 11/09/2022] Open
Abstract
Large magnetic anisotropy and coercivity are key properties of functional magnetic materials and are generally associated with rare earth elements. Here we show an extreme, uniaxial magnetic anisotropy and the emergence of magnetic hysteresis in Li₂(Li(1-x)Fe(x))N. An extrapolated, magnetic anisotropy field of 220 T and a coercivity field of over 11 T at 2 K outperform all known hard ferromagnets and single-molecular magnets. Steps in the hysteresis loops and relaxation phenomena in striking similarity to single-molecular magnets are particularly pronounced for x≪1 and indicate the presence of nanoscale magnetic centres. Quantum tunnelling, in the form of temperature-independent relaxation and coercivity, deviation from Arrhenius behaviour and blocking of the relaxation, dominates the magnetic properties up to 10 K. The simple crystal structure, the availability of large single crystals and the ability to vary the Fe concentration make Li₂(Li(1-x)Fe(x))N an ideal model system to study macroscopic quantum effects at elevated temperatures and also a basis for novel functional magnetic materials.
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Affiliation(s)
- A Jesche
- The Ames Laboratory, Iowa State University, Ames, Iowa 50011, USA
| | - R W McCallum
- 1] The Ames Laboratory, Iowa State University, Ames, Iowa 50011, USA [2] Department of Materials Science and Engineering, Iowa State University, Ames, Iowa 50011, USA
| | - S Thimmaiah
- The Ames Laboratory, Iowa State University, Ames, Iowa 50011, USA
| | - J L Jacobs
- 1] The Ames Laboratory, Iowa State University, Ames, Iowa 50011, USA [2] Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA
| | - V Taufour
- Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA
| | - A Kreyssig
- 1] The Ames Laboratory, Iowa State University, Ames, Iowa 50011, USA [2] Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA
| | - R S Houk
- 1] The Ames Laboratory, Iowa State University, Ames, Iowa 50011, USA [2] Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA
| | - S L Bud'ko
- 1] The Ames Laboratory, Iowa State University, Ames, Iowa 50011, USA [2] Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA
| | - P C Canfield
- 1] The Ames Laboratory, Iowa State University, Ames, Iowa 50011, USA [2] Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA
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325
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Boča R, Miklovič J, Titiš J. Simple mononuclear cobalt(II) complex: a single-molecule magnet showing two slow relaxation processes. Inorg Chem 2014; 53:2367-9. [PMID: 24524226 DOI: 10.1021/ic5000638] [Citation(s) in RCA: 146] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Complex [Co(PPh3)2Br2] possesses intermediate magnetic anisotropy, D/hc = -13 cm(-1). It displays superparamagnetic behavior either in the absence of the magnetic field or in fields of Bdc = 0.05, 0.1, 0.15, and 0.2 T. At Bdc = 0.1 T, the barrier to spin reversal U/kB = 37 K and the extrapolated relaxation time τ0 = 9.4 × 10(-11) s confirm its classification as a single-molecule magnet. At Bdc = 0.2 T, two relaxation processes are evidenced.
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Affiliation(s)
- Roman Boča
- Department of Chemistry, FPV, University of SS Cyril and Methodius , 91701 Trnava, Slovakia
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326
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Reger DL, Pascui AE, Foley EA, Smith MD, Jezierska J, Ozarowski A. Dinuclear Metallacycles with Single M–O(H)–M Bridges [M = Fe(II), Co(II), Ni(II), Cu(II)]: Effects of Large Bridging Angles on Structure and Antiferromagnetic Superexchange Interactions. Inorg Chem 2014; 53:1975-88. [DOI: 10.1021/ic4017905] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Daniel L. Reger
- Department
of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Andrea E. Pascui
- Department
of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Elizabeth A. Foley
- Department
of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Mark D. Smith
- Department
of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Julia Jezierska
- Faculty
of Chemistry, University of Wrocław, 50-383 Wrocław, Poland
| | - Andrew Ozarowski
- National
High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, United States
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327
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Eichhöfer A, Lan Y, Mereacre V, Bodenstein T, Weigend F. Slow Magnetic Relaxation in Trigonal-Planar Mononuclear Fe(II) and Co(II) Bis(trimethylsilyl)amido Complexes—A Comparative Study. Inorg Chem 2014; 53:1962-74. [DOI: 10.1021/ic401677j] [Citation(s) in RCA: 136] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Andreas Eichhöfer
- Institut für Nanotechnologie, Karlsruher Institut für Technologie (KIT), Campus Nord, Hermann-von-Helmholtz-Platz
1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Yanhua Lan
- Institut für Anorganische
Chemie, Karlsruher Institut für Technologie (KIT), Campus Süd, Engesserstr. 15, 76131, Karlsruhe, Germany
| | - Valeriu Mereacre
- Institut für Anorganische
Chemie, Karlsruher Institut für Technologie (KIT), Campus Süd, Engesserstr. 15, 76131, Karlsruhe, Germany
| | - Tilmann Bodenstein
- Institut für Nanotechnologie, Karlsruher Institut für Technologie (KIT), Campus Nord, Hermann-von-Helmholtz-Platz
1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Florian Weigend
- Institut für Nanotechnologie, Karlsruher Institut für Technologie (KIT), Campus Nord, Hermann-von-Helmholtz-Platz
1, 76344, Eggenstein-Leopoldshafen, Germany
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328
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329
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Piñero Cruz DM, Woodruff DN, Jeon IR, Bhowmick I, Secu M, Hillard EA, Dechambenoit P, Clérac R. Switching off the single-molecule magnet properties of the [CoII(Me6tren)(OH2)]2+ module by complexation with trans-[RuIII(salen)(CN)2]−. NEW J CHEM 2014. [DOI: 10.1039/c4nj00452c] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A new mononuclear pentacoordinate CoII SMM was synthesized and associated with trans-[RuIII(salen)(CN)2]− to form a trinuclear complex without SMM properties.
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Affiliation(s)
- Dalice M. Piñero Cruz
- CNRS
- CRPP
- UPR 8641
- Laboratory for “Molecular Materials and Magnetism”
- F-33600 Pessac, France
| | - Daniel N. Woodruff
- CNRS
- CRPP
- UPR 8641
- Laboratory for “Molecular Materials and Magnetism”
- F-33600 Pessac, France
| | - Ie-Rang Jeon
- CNRS
- CRPP
- UPR 8641
- Laboratory for “Molecular Materials and Magnetism”
- F-33600 Pessac, France
| | - Indrani Bhowmick
- CNRS
- CRPP
- UPR 8641
- Laboratory for “Molecular Materials and Magnetism”
- F-33600 Pessac, France
| | - Mihail Secu
- CNRS
- CRPP
- UPR 8641
- Laboratory for “Molecular Materials and Magnetism”
- F-33600 Pessac, France
| | - Elizabeth A. Hillard
- CNRS
- CRPP
- UPR 8641
- Laboratory for “Molecular Materials and Magnetism”
- F-33600 Pessac, France
| | - Pierre Dechambenoit
- CNRS
- CRPP
- UPR 8641
- Laboratory for “Molecular Materials and Magnetism”
- F-33600 Pessac, France
| | - Rodolphe Clérac
- CNRS
- CRPP
- UPR 8641
- Laboratory for “Molecular Materials and Magnetism”
- F-33600 Pessac, France
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330
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Gruden-Pavlović M, Perić M, Zlatar M, García-Fernández P. Theoretical study of the magnetic anisotropy and magnetic tunnelling in mononuclear Ni(ii) complexes with potential molecular magnet behavior. Chem Sci 2014. [DOI: 10.1039/c3sc52984c] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
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331
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Xie QW, Wu SQ, Shi WB, Liu CM, Cui AL, Kou HZ. Heterodinuclear MII–LnIII single molecule magnets constructed from exchange-coupled single ion magnets. Dalton Trans 2014; 43:11309-16. [DOI: 10.1039/c4dt00740a] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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332
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Chakraborty A, Bag P, Rivière E, Mallah T, Chandrasekhar V. Assembly of heterobimetallic NiII–LnIII (LnIII = DyIII, TbIII, GdIII, HoIII, ErIII, YIII) complexes using a ferrocene ligand: slow relaxation of the magnetization in DyIII, TbIII and HoIII analogues. Dalton Trans 2014; 43:8921-32. [DOI: 10.1039/c4dt00209a] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Structure and characterization of a new family of dinuclear 3d–4f heterobimetallic complexes [LNi(H2O)(μ-OAc)Ln(NO3)2]·CH3CN; {Ln = DyIII (1), TbIII (2), HoIII (3), GdIII (4), ErIII (5), YIII (6)} using a ferrocene-based compartmental ligand H2L.
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Affiliation(s)
- Amit Chakraborty
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India.
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333
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Singh SK, Gupta T, Shanmugam M, Rajaraman G. Unprecedented magnetic relaxation via the fourth excited state in low-coordinate lanthanide single-ion magnets: a theoretical perspective. Chem Commun (Camb) 2014; 50:15513-6. [DOI: 10.1039/c4cc05522e] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
How to enhance the barrier heights in lanthanide based SIMs? Using ab initio calculations, we have explored the role of symmetry and the coordination number on the magnetization dynamics of four three-coordinate Ln(iii) SIMs.
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Affiliation(s)
| | - Tulika Gupta
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai, India
| | | | - Gopalan Rajaraman
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai, India
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334
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Canaj AB, Tsikalas GK, Philippidis A, Spyros A, Milios CJ. Heptanuclear lanthanide [Ln7] clusters: from blue-emitting solution-stable complexes to hybrid clusters. Dalton Trans 2014; 43:12486-94. [DOI: 10.1039/c4dt00701h] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A family of heptanuclear lanthanide [Ln7] complexes was isolated and fully characterized by magnetic measurements, NMR and absorption–emission spectroscopy.
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Affiliation(s)
- Angelos B. Canaj
- Department of Chemistry
- The University of Crete
- Herakleion, Greece
| | | | - Aggelos Philippidis
- Institute of Electronic Structure and Laser
- Foundation for Research and Technology-Hellas (IESL-FORTH)
- GR 711 10 Herakleion, Greece
| | - Apostolos Spyros
- Department of Chemistry
- The University of Crete
- Herakleion, Greece
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335
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Gómez-Coca S, Cremades E, Aliaga-Alcalde N, Ruiz E. Huge magnetic anisotropy in a trigonal-pyramidal nickel(II) complex. Inorg Chem 2013; 53:676-8. [PMID: 24359111 DOI: 10.1021/ic402256v] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The work presented herein shows the experimental and theoretical studies of a mononuclear nickel(II) complex with the largest magnetic anisotropy ever reported. The zero-field-splitting D parameter, extracted from the fits of the magnetization and susceptibility measurements, shows a large value of -200 cm(-1), in agreement with the theoretical value of -244 cm(-1) obtained with the CASPT2-RASSI method.
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Affiliation(s)
- Silvia Gómez-Coca
- Departament de Química Inorgànica and Institut de Recerca de Química Teòrica i Computacional, Universitat de Barcelona , Diagonal 645, E-08028 Barcelona, Spain
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336
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Lamouchi M, Jeanneau E, Novitchi G, Luneau D, Brioude A, Desroches C. Polynuclear Complex Family of Cobalt(II)/Sulfonylcalixarene: One-Pot Synthesis of Cluster Salt [Co14II]+[Co4II]− and Field-Induced Slow Magnetic Relaxation in a Six-Coordinate Dinuclear Cobalt(II)/Sulfonylcalixarene Complex. Inorg Chem 2013; 53:63-72. [DOI: 10.1021/ic4012422] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Meriem Lamouchi
- Laboratoire
des Multimatériaux et Interfaces (UMR 5615), Université Claude Bernard Lyon 1, Campus de La Doua, 69622 Villeurbanne Cedex, France
| | - Erwann Jeanneau
- Laboratoire
des Multimatériaux et Interfaces (UMR 5615), Université Claude Bernard Lyon 1, Campus de La Doua, 69622 Villeurbanne Cedex, France
| | - Ghenadie Novitchi
- Laboratoire
National des Champs Magnétiques Intenses, CNRS, 38042 Grenoble, France
| | - Dominique Luneau
- Laboratoire
des Multimatériaux et Interfaces (UMR 5615), Université Claude Bernard Lyon 1, Campus de La Doua, 69622 Villeurbanne Cedex, France
| | - Arnaud Brioude
- Laboratoire
des Multimatériaux et Interfaces (UMR 5615), Université Claude Bernard Lyon 1, Campus de La Doua, 69622 Villeurbanne Cedex, France
| | - Cédric Desroches
- Laboratoire
des Multimatériaux et Interfaces (UMR 5615), Université Claude Bernard Lyon 1, Campus de La Doua, 69622 Villeurbanne Cedex, France
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337
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Two trigonal–bipyramidal cobalt(II) complexes with small magnetic hysteresis: Synthesis, structure and single crystal magnetic studies. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.03.037] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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338
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Upadhyay A, Vaidya S, Venkatasai VS, Jayapal P, Srivastava AK, Shanmugam M, Shanmugam M. Synthesis and characterization of 3d and 4f metal complexes of Schiff base ligands. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.02.039] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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339
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Chandrasekhar V, Das S, Dey A, Hossain S, Kundu S, Colacio E. Linear, Edge-Sharing Heterometallic Trinuclear [CoII-LnIII-CoII] (LnIII= GdIII, DyIII, TbIII, and HoIII) Complexes: Slow Relaxation of Magnetization in the DyIIIDerivative. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201301171] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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340
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Yang F, Zhou Q, Zhang Y, Zeng G, Li G, Shi Z, Wang B, Feng S. Inspiration from old molecules: field-induced slow magnetic relaxation in three air-stable tetrahedral cobalt(II) compounds. Chem Commun (Camb) 2013; 49:5289-91. [PMID: 23632459 DOI: 10.1039/c3cc00277b] [Citation(s) in RCA: 116] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have investigated the dynamics of the magnetization of three four-coordinate mononuclear cobalt(II) compounds, which are synthesized conveniently and are air stable. Slow magnetic relaxation effects were observed for the compounds in the presence of a dc magnetic field.
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Affiliation(s)
- Fen Yang
- State Key Laboratory of Inorganic Synthesis & Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, PR China
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341
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Vallejo J, Pascual-Álvarez A, Cano J, Castro I, Julve M, Lloret F, Krzystek J, De Munno G, Armentano D, Wernsdorfer W, Ruiz-García R, Pardo E. Field-Induced Hysteresis and Quantum Tunneling of the Magnetization in a Mononuclear Manganese(III) Complex. Angew Chem Int Ed Engl 2013; 52:14075-9. [DOI: 10.1002/anie.201308047] [Citation(s) in RCA: 144] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2013] [Indexed: 11/08/2022]
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342
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Vallejo J, Pascual-Álvarez A, Cano J, Castro I, Julve M, Lloret F, Krzystek J, De Munno G, Armentano D, Wernsdorfer W, Ruiz-García R, Pardo E. Field-Induced Hysteresis and Quantum Tunneling of the Magnetization in a Mononuclear Manganese(III) Complex. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201308047] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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343
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Meihaus KR, Long JR. Magnetic Blocking at 10 K and a Dipolar-Mediated Avalanche in Salts of the Bis(η8-cyclooctatetraenide) Complex [Er(COT)2]−. J Am Chem Soc 2013; 135:17952-7. [DOI: 10.1021/ja4094814] [Citation(s) in RCA: 303] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Katie R. Meihaus
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
| | - Jeffrey R. Long
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
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344
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Magnetism, IR and Raman spectra of a tetracoordinate and hexacoordinate Co(II) complexes derived from aminopyrimidine. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2013.09.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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345
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Zadrozny JM, Telser J, Long JR. Slow magnetic relaxation in the tetrahedral cobalt(II) complexes [Co(EPh)4]2− (EO, S, Se). Polyhedron 2013. [DOI: 10.1016/j.poly.2013.04.008] [Citation(s) in RCA: 148] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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346
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Zadrozny JM, Xiao DJ, Long JR, Atanasov M, Neese F, Grandjean F, Long GJ. Mössbauer Spectroscopy as a Probe of Magnetization Dynamics in the Linear Iron(I) and Iron(II) Complexes [Fe(C(SiMe3)3)2]1–/0. Inorg Chem 2013; 52:13123-31. [DOI: 10.1021/ic402013n] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | - Mihail Atanasov
- Max-Planck Institut fur Chemische Energiekonversion, Mulheim an der Ruhr, D-45470, Germany
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Acad. Georgi Bontchev Str 11, 1113 Sofia, Bulgaria
| | - Frank Neese
- Max-Planck Institut fur Chemische Energiekonversion, Mulheim an der Ruhr, D-45470, Germany
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347
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Dey M, Gogoi N. Geometrievermittelte Anisotropieverstärkung: Zugang zu molekularen Magneten mit hoher Blocking-Temperatur. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201304982] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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348
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Dey M, Gogoi N. Geometry-Mediated Enhancement of Single-Ion Anisotropy: A Route to Single-Molecule Magnets with a High Blocking Temperature. Angew Chem Int Ed Engl 2013; 52:12780-2. [DOI: 10.1002/anie.201304982] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Indexed: 11/08/2022]
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349
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Wang BW, Wang XY, Sun HL, Jiang SD, Gao S. Evolvement of molecular nanomagnets in China. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2013; 371:20120316. [PMID: 24000367 DOI: 10.1098/rsta.2012.0316] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Molecular nanomagnets have been undergoing development for 20 years since the first single-molecule magnet (SMM), Mn₁₂Ac, was characterized as the molecule-behaved magnet. The multi-disciplinary scientists promoted the magnetic characteristics to be more suitable for use in information science and spintronics. The concept of molecular nanomagnets has also evolved to include single-chain magnets (SCMs), single-ion magnets (SIMs) and even magnetic molecules that showed only slow magnetic relaxation, in addition to the initial cluster-type SMMs. In this review, several aspects, including SMMs, SCMs and SIMs, are introduced briefly through some representative examples. In particular, the contribution of Chinese chemists is highlighted in the design, synthesis and understanding of various types of molecular nanomagnets.
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Affiliation(s)
- Bing-Wu Wang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic of China
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Bryan AM, Long GJ, Grandjean F, Power PP. Synthesis, Spectroscopic Characterization, and Determination of the Solution Association Energy of the Dimer [Co{N(SiMe3)2}2]2: Magnetic Studies of Low-Coordinate Co(II) Silylamides [Co{N(SiMe3)2}2L] (L = PMe3, Pyridine, and THF) and Related Species That Reveal Evidence of Very Large Zero-Field Splittings. Inorg Chem 2013; 52:12152-60. [DOI: 10.1021/ic402019w] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Aimee M. Bryan
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, United States
| | - Gary J. Long
- Department of Chemistry, Missouri University of Science and Technology, University of Missouri, Rolla, Missouri 65409, United States
| | - Fernande Grandjean
- Department of Chemistry, Missouri University of Science and Technology, University of Missouri, Rolla, Missouri 65409, United States
| | - Philip P. Power
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, United States
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