51
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Molecular Engineering of High Energy Barrier in Single-Molecule Magnets Based on [MoIII(CN)7]4− and V(II) Complexes. INORGANICS 2018. [DOI: 10.3390/inorganics6020058] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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52
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Jin XX, Chen XX, Xiang J, Chen YZ, Jia LH, Wang BW, Cheng SC, Zhou X, Leung CF, Gao S. Slow Magnetic Relaxation in a Series of Mononuclear 8-Coordinate Fe(II) and Co(II) Complexes. Inorg Chem 2018. [PMID: 29521502 DOI: 10.1021/acs.inorgchem.7b03071] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A series of homoleptic mononuclear 8-coordinate FeII and CoII compounds, [FeII(L2)2](ClO4)2 (2), [FeII(L3)2](ClO4)2 (3), [FeII(L4)2](ClO4)2 (4), [CoII(L1)2](ClO4)2 (5), [CoII(L2)2](ClO4)2 (6), [CoII(L3)2](ClO4)2 (7), and [CoII(L4)2](ClO4)2 (8) (L1 and L2 are 2,9-dialkylcarboxylate-1,10-phenanthroline ligands; L3 and L4 are 6,6'-dialkylcarboxylate-2,2'-bipyridine ligands), have been obtained, and their crystal structures have been determined by X-ray crystallography. The metal center in all of these compounds has an oversaturated coordination number of 8, which is completed by two neutral homoleptic tetradentate ligands and is unconventional in 3d-metal compounds. These compounds are further characterized by electronic spectroscopy, cyclic voltammetry (CV), and magnetic measurements. CV measurements of these complexes in MeCN solution exhibit rich redox properties. Magnetic measurements on these compounds demonstrate that the observed single-ion magnetic (SIM) behavior in the previously reported [FeII(L1)2](ClO4)2 (1) is not a contingent case, since all of the 8-coordinate compounds 2-8 exhibit interesting slow magnetic relaxation under applied direct current fields.
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Affiliation(s)
- Xin-Xin Jin
- College of Chemistry and Environmental Engineering , Yangtze University , Jingzhou 434020 , HuBei , P. R. China
| | - Xiao-Xiang Chen
- 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
| | - Jing Xiang
- College of Chemistry and Environmental Engineering , Yangtze University , Jingzhou 434020 , HuBei , P. R. China
| | - Yun-Zhou Chen
- School of Chemistry and Environmental Engineering , Wuhan Institute of Technology , Wuhan 430073 , P. R. China
| | - Li-Hui Jia
- School of Chemistry and Environmental Engineering , Wuhan Institute of Technology , Wuhan 430073 , 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
| | - Shun-Cheung Cheng
- Department of Chemistry , City University of Hong Kong , Tat Chee Avenue, Kowloon Tong , Hong Kong 999077 , P. R. China
| | - Xin Zhou
- College of Chemistry and Environmental Engineering , Yangtze University , Jingzhou 434020 , HuBei , P. R. China
| | - Chi-Fai Leung
- Department of Science and Environmental Studies , The Education University of Hong Kong , 10 Lo Ping Road, Tai Po, NT , Hong Kong 999077 , 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
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53
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Craig GA, Sarkar A, Woodall CH, Hay MA, Marriott KER, Kamenev KV, Moggach SA, Brechin EK, Parsons S, Rajaraman G, Murrie M. Probing the origin of the giant magnetic anisotropy in trigonal bipyramidal Ni(ii) under high pressure. Chem Sci 2018; 9:1551-1559. [PMID: 29675200 PMCID: PMC5890327 DOI: 10.1039/c7sc04460g] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Accepted: 12/18/2017] [Indexed: 11/30/2022] Open
Abstract
Understanding and controlling magnetic anisotropy at the level of a single metal ion is vital if the miniaturisation of data storage is to continue to evolve into transformative technologies. Magnetic anisotropy is essential for a molecule-based magnetic memory as it pins the magnetic moment of a metal ion along the easy axis. Devices will require deposition of magnetic molecules on surfaces, where changes in molecular structure can significantly alter magnetic properties. Furthermore, if we are to use coordination complexes with high magnetic anisotropy as building blocks for larger systems we need to know how magnetic anisotropy is affected by structural distortions. Here we study a trigonal bipyramidal nickel(ii) complex where a giant magnetic anisotropy of several hundred wavenumbers can be engineered. By using high pressure, we show how the magnetic anisotropy is strongly influenced by small structural distortions. Using a combination of high pressure X-ray diffraction, ab initio methods and high pressure magnetic measurements, we find that hydrostatic pressure lowers both the trigonal symmetry and axial anisotropy, while increasing the rhombic anisotropy. The ligand-metal-ligand angles in the equatorial plane are found to play a crucial role in tuning the energy separation between the d x2-y2 and d xy orbitals, which is the determining factor that controls the magnitude of the axial anisotropy. These results demonstrate that the combination of high pressure techniques with ab initio studies is a powerful tool that gives a unique insight into the design of systems that show giant magnetic anisotropy.
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Affiliation(s)
- Gavin A Craig
- WestCHEM , School of Chemistry , University of Glasgow , Glasgow , G12 8QQ , UK .
| | - Arup Sarkar
- Department of Chemistry , Indian Institute of Technology Bombay , Powai , Mumbai , Maharashtra 400 076 , India .
| | - Christopher H Woodall
- Centre for Science at Extreme Conditions , University of Edinburgh , Edinburgh , EH9 3FD , UK .
- EaStCHEM , School of Chemistry , University of Edinburgh , Edinburgh , EH9 3FJ , UK
| | - Moya A Hay
- WestCHEM , School of Chemistry , University of Glasgow , Glasgow , G12 8QQ , UK .
| | - Katie E R Marriott
- WestCHEM , School of Chemistry , University of Glasgow , Glasgow , G12 8QQ , UK .
| | - Konstantin V Kamenev
- Centre for Science at Extreme Conditions , University of Edinburgh , Edinburgh , EH9 3FD , UK .
- EaStCHEM , School of Chemistry , University of Edinburgh , Edinburgh , EH9 3FJ , UK
| | - Stephen A Moggach
- Centre for Science at Extreme Conditions , University of Edinburgh , Edinburgh , EH9 3FD , UK .
- EaStCHEM , School of Chemistry , University of Edinburgh , Edinburgh , EH9 3FJ , UK
| | - Euan K Brechin
- Centre for Science at Extreme Conditions , University of Edinburgh , Edinburgh , EH9 3FD , UK .
- EaStCHEM , School of Chemistry , University of Edinburgh , Edinburgh , EH9 3FJ , UK
| | - Simon Parsons
- Centre for Science at Extreme Conditions , University of Edinburgh , Edinburgh , EH9 3FD , UK .
- EaStCHEM , School of Chemistry , University of Edinburgh , Edinburgh , EH9 3FJ , UK
| | - Gopalan Rajaraman
- Department of Chemistry , Indian Institute of Technology Bombay , Powai , Mumbai , Maharashtra 400 076 , India .
| | - Mark Murrie
- WestCHEM , School of Chemistry , University of Glasgow , Glasgow , G12 8QQ , UK .
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54
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Gupta T, Rajaraman G. Modelling spin Hamiltonian parameters of molecular nanomagnets. Chem Commun (Camb) 2018; 52:8972-9008. [PMID: 27366794 DOI: 10.1039/c6cc01251e] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Molecular nanomagnets encompass a wide range of coordination complexes possessing several potential applications. A formidable challenge in realizing these potential applications lies in controlling the magnetic properties of these clusters. Microscopic spin Hamiltonian (SH) parameters describe the magnetic properties of these clusters, and viable ways to control these SH parameters are highly desirable. Computational tools play a proactive role in this area, where SH parameters such as isotropic exchange interaction (J), anisotropic exchange interaction (Jx, Jy, Jz), double exchange interaction (B), zero-field splitting parameters (D, E) and g-tensors can be computed reliably using X-ray structures. In this feature article, we have attempted to provide a holistic view of the modelling of these SH parameters of molecular magnets. The determination of J includes various class of molecules, from di- and polynuclear Mn complexes to the {3d-Gd}, {Gd-Gd} and {Gd-2p} class of complexes. The estimation of anisotropic exchange coupling includes the exchange between an isotropic metal ion and an orbitally degenerate 3d/4d/5d metal ion. The double-exchange section contains some illustrative examples of mixed valance systems, and the section on the estimation of zfs parameters covers some mononuclear transition metal complexes possessing very large axial zfs parameters. The section on the computation of g-anisotropy exclusively covers studies on mononuclear Dy(III) and Er(III) single-ion magnets. The examples depicted in this article clearly illustrate that computational tools not only aid in interpreting and rationalizing the observed magnetic properties but possess the potential to predict new generation MNMs.
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Affiliation(s)
- Tulika Gupta
- Department of Chemistry, IIT Powai, Mumbai-400076, India.
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55
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Chen SY, Cui HH, Zhang YQ, Wang Z, Ouyang ZW, Chen L, Chen XT, Yan H, Xue ZL. Magnetic anisotropy and relaxation behavior of six-coordinate tris(pivalato)-Co(ii) and -Ni(ii) complexes. Dalton Trans 2018; 47:10162-10171. [DOI: 10.1039/c8dt01554f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Magnetic measurements, HFEPR and theoretical calculations have been used to study the magnetic anisotropy of the six-coordinate field-induced single ion magnet (NBu4)[Co(piv)3] and its Ni analogue.
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Affiliation(s)
- Shu-Yang Chen
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
- China
| | - Hui-Hui Cui
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
- China
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS
- School of Physical Science and Technology
- Nanjing Normal University
- Nanjing 210023
- China
| | - Zhenxing Wang
- Wuhan National High Magnetic Field Center & School of Physics
- Huazhong University of Science and Technology
- Wuhan 430074
- China
| | - Zhong-Wen Ouyang
- Wuhan National High Magnetic Field Center & School of Physics
- Huazhong University of Science and Technology
- Wuhan 430074
- China
| | - Lei Chen
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- China
| | - Xue-Tai Chen
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
- China
| | - Hong Yan
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
- China
| | - Zi-Ling Xue
- Department of Chemistry
- University of Tennessee
- Knoxville
- USA
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56
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Mondal AK, Sundararajan M, Konar S. A new series of tetrahedral Co(ii) complexes [CoLX2] (X = NCS, Cl, Br, I) manifesting single-ion magnet features. Dalton Trans 2018; 47:3745-3754. [DOI: 10.1039/c7dt04007e] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The influence of ligand field strength on the magnetic anisotropy of a series of isostructural tetrahedral CoII complexes has been investigated by using a combined experimental and theoretical approach.
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Affiliation(s)
- Amit Kumar Mondal
- Department of Chemistry
- Indian Institute of Science Education and Research Bhopal
- Bhauri
- India
| | - Mahesh Sundararajan
- Theoretical Chemistry Section
- Bhabha Atomic Research Centre
- Mumbai 400085
- India
| | - Sanjit Konar
- Department of Chemistry
- Indian Institute of Science Education and Research Bhopal
- Bhauri
- India
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57
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Manakin YV, Mironov VS, Bazhenova TA, Lyssenko KA, Gilmutdinov IF, Bikbaev KS, Masitov AA, Yagubskii EB. (Et4N)[MoIII(DAPBH)Cl2], the first pentagonal-bipyramidal Mo(iii) complex with a N3O2-type Schiff-base ligand: manifestation of unquenched orbital momentum and Ising-type magnetic anisotropy. Chem Commun (Camb) 2018; 54:10084-10087. [DOI: 10.1039/c8cc06038j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
We demonstrate that a planar pentadentate organic ligand can generate sufficiently strong ligand-field to stabilize the low-spin orbitally-degenerate configuration of Mo(iii) that results in strong Ising-type magnetic anisotropy.
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Affiliation(s)
- Yu. V. Manakin
- Institute of Problems of Chemical Physics
- IPCP RAS
- Chernogolovka
- Russia
| | - V. S. Mironov
- Institute of Problems of Chemical Physics
- IPCP RAS
- Chernogolovka
- Russia
- Shubnikov Institute of Crystallography of Federal Scientific Research Centre “Crystallography and Photonics” RAS
| | - T. A. Bazhenova
- Institute of Problems of Chemical Physics
- IPCP RAS
- Chernogolovka
- Russia
| | - K. A. Lyssenko
- A. N. Nesmeyanov Institute of Organoelement Compounds
- RAS
- Moscow
- Russia
| | | | - K. Sh. Bikbaev
- Institute of Problems of Chemical Physics
- IPCP RAS
- Chernogolovka
- Russia
| | - A. A. Masitov
- Institute of Problems of Chemical Physics
- IPCP RAS
- Chernogolovka
- Russia
| | - E. B. Yagubskii
- Institute of Problems of Chemical Physics
- IPCP RAS
- Chernogolovka
- Russia
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58
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Novitchi G, Jiang S, Shova S, Rida F, Hlavička I, Orlita M, Wernsdorfer W, Hamze R, Martins C, Suaud N, Guihéry N, Barra AL, Train C. From Positive to Negative Zero-Field Splitting in a Series of Strongly Magnetically Anisotropic Mononuclear Metal Complexes. Inorg Chem 2017; 56:14809-14822. [PMID: 29181984 DOI: 10.1021/acs.inorgchem.7b01861] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A series of mononuclear [M(hfa)2(pic)2] (Hhfa = 1,1,1,5,5,5-hexafluoro-2,4-pentanedione; pic = 4-methylpyridine; M = FeII, CoII, NiII, ZnII) compounds were obtained and characterized. The structures of the complexes have been resolved by single-crystal X-ray diffraction, indicating that, apart from the zinc derivative, the complexes are in a trans configuration. Moreover, a dramatic lenghthening of the Fe-N distances was observed, whereas the nickel(II) complex is almost perfectly octahedral. The magnetic anisotropy of these complexes was thoroughly studied by direct-current (dc) magnetic measurements, high-field electron paramagnetic resonance, and infrared (IR) magnetospectroscopy: the iron(II) derivative exhibits an out-of-plane anisotropy (DFe = -7.28 cm-1) with a high rhombicity, whereas the cobalt(II) and nickel(II) complexes show in-plane anisotropy (DCo ∼ 92-95 cm-1; DNi = 4.920 cm-1). Ab initio calculations were performed to rationalize the evolution of the structure and identify the excited states governing the magnetic anisotropy along the series. For the iron(II) complex, an out-of-phase alternating-current (ac) magnetic susceptibility signal was observed using a 0.1 T dc field. For the cobalt(II) derivative, the ac magnetic susceptibility shows the presence of two field-dependent relaxation phenomena: at low field (500 Oe), the relaxation process is beyond single-ion behavior, whereas at high field (2000 Oe), the relaxation of magnetization implies several mechanisms including an Orbach process with Ueff = 25 K and quantum tunneling of magnetization. The observation by μ-SQUID magnetization measurements of hysteresis loops of up to 1 K confirmed the single-ion-magnet behavior of the cobalt(II) derivative.
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Affiliation(s)
- Ghénadie Novitchi
- Laboratoire National des Champs Magnétiques Intenses, UPR CNRS 3228, Université Grenoble-Alpes , 25 rue des Martyrs, B.P. 166, 38042 Grenoble Cedex 9, France
| | - Shangda Jiang
- Laboratoire National des Champs Magnétiques Intenses, UPR CNRS 3228, Université Grenoble-Alpes , 25 rue des Martyrs, B.P. 166, 38042 Grenoble Cedex 9, France
| | - Sergiu Shova
- "Petru Poni" Institute of Macromolecular Chemistry , Aleea Gr. Ghica Voda 41A, 700487 Iasi, Romania
| | - Fatima Rida
- Laboratoire National des Champs Magnétiques Intenses, UPR CNRS 3228, Université Grenoble-Alpes , 25 rue des Martyrs, B.P. 166, 38042 Grenoble Cedex 9, France
| | - Ivo Hlavička
- Laboratoire National des Champs Magnétiques Intenses, UPR CNRS 3228, Université Grenoble-Alpes , 25 rue des Martyrs, B.P. 166, 38042 Grenoble Cedex 9, France
| | - Milan Orlita
- Laboratoire National des Champs Magnétiques Intenses, UPR CNRS 3228, Université Grenoble-Alpes , 25 rue des Martyrs, B.P. 166, 38042 Grenoble Cedex 9, France
| | - Wolfgang Wernsdorfer
- Institut Néel, UPR CNRS 2940, Université Grenoble-Alpes , B.P. 166, 38042 Grenoble Cedex 9, France.,Physikalisches Institut and Institute of Nanotechnology, Karlsruhe Institute of Technology , Wolfgang-Gaede-Strasse 1, 76131 Karlsruhe, Germany
| | - Rana Hamze
- Laboratoire de Chimie et Physique Quantiques, UMR 5626, Université de Toulouse 3, Paul Sabatier , 118 route de Narbonne, 31062 Toulouse, France
| | - Cyril Martins
- Laboratoire de Chimie et Physique Quantiques, UMR 5626, Université de Toulouse 3, Paul Sabatier , 118 route de Narbonne, 31062 Toulouse, France
| | - Nicolas Suaud
- Laboratoire de Chimie et Physique Quantiques, UMR 5626, Université de Toulouse 3, Paul Sabatier , 118 route de Narbonne, 31062 Toulouse, France
| | - Nathalie Guihéry
- Laboratoire de Chimie et Physique Quantiques, UMR 5626, Université de Toulouse 3, Paul Sabatier , 118 route de Narbonne, 31062 Toulouse, France
| | - Anne-Laure Barra
- Laboratoire National des Champs Magnétiques Intenses, UPR CNRS 3228, Université Grenoble-Alpes , 25 rue des Martyrs, B.P. 166, 38042 Grenoble Cedex 9, France
| | - Cyrille Train
- Laboratoire National des Champs Magnétiques Intenses, UPR CNRS 3228, Université Grenoble-Alpes , 25 rue des Martyrs, B.P. 166, 38042 Grenoble Cedex 9, France
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59
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El‐Khatib F, Cahier B, López‐Jordà M, Guillot R, Rivière E, Hafez H, Saad Z, Guihéry N, Mallah T. A Bis‐Binuclear Ni
II
Complex with Easy and Hard Axes of Magnetization: Complementary Experimental and Theoretical Insights. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700977] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Fatima El‐Khatib
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS Université Paris Sud 91405 Orsay Cedex France
- Inorganic & Environmental Chemistry Laboratory (IECL) Faculty of Sciences I, Hadath Lebanese University Beirut Lebanon
| | - Benjamin Cahier
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS Université Paris Sud 91405 Orsay Cedex France
| | - Maurici López‐Jordà
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS Université Paris Sud 91405 Orsay Cedex France
| | - Régis Guillot
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS Université Paris Sud 91405 Orsay Cedex France
| | - Eric Rivière
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS Université Paris Sud 91405 Orsay Cedex France
| | - Hala Hafez
- Inorganic & Environmental Chemistry Laboratory (IECL) Faculty of Sciences I, Hadath Lebanese University Beirut Lebanon
| | - Zeinab Saad
- Inorganic & Environmental Chemistry Laboratory (IECL) Faculty of Sciences I, Hadath Lebanese University Beirut Lebanon
| | - Nathalie Guihéry
- Laboratoire de Chimie et Physique Quantiques Université Toulouse III 118 route de Narbonne 31062 Toulouse France
| | - Talal Mallah
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS Université Paris Sud 91405 Orsay Cedex France
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60
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El-Khatib F, Cahier B, López-Jordà M, Guillot R, Rivière E, Hafez H, Saad Z, Girerd JJ, Guihéry N, Mallah T. Design of a Binuclear Ni(II) Complex with Large Ising-type Anisotropy and Weak Anti-Ferromagnetic Coupling. Inorg Chem 2017; 56:10655-10663. [PMID: 28832136 DOI: 10.1021/acs.inorgchem.7b01609] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The preparation of a binuclear Ni(II) complex with a pentacoordinate environment using a cryptand organic ligand and the imidazolate bridge is reported. The coordination sphere is close to trigonal bipyramidal (tbp) for one Ni(II) and to square pyramidal (spy) for the other. The use of the imidazolate bridge that undergoes π-π stacking with two benzene rings of the chelating ligand induces steric hindrance that stabilizes the pentacoordinate environment. Magnetic measurements together with theoretical studies of the spin states energy levels allow fitting the data and reveal a large Ising-type anisotropy and a weak anti-ferromagnetic exchange coupling between the metal ions. The magnitude and the nature of the magnetic anisotropy and the difference in anisotropy between the two metal ions are rationalized using wave-function-based calculations. We show that a slight distortion of the coordination sphere of Ni(II) from spy to tbp leads to an Ising-type anisotropy. Broken-symmetry density functional calculations rationalize the weak anti-ferromagnetic exchange coupling through the imidazolate bridge.
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Affiliation(s)
- Fatima El-Khatib
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, Université Paris Sud, CNRS , Université Paris Saclay, 91405 Orsay Cedex, France.,Lebanese University, Inorganic & Environmental Chemistry Laboratory, Faculty of Sciences I, Hadath, Lebanese University , Beirut, Lebanon
| | - Benjamin Cahier
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, Université Paris Sud, CNRS , Université Paris Saclay, 91405 Orsay Cedex, France
| | - Maurici López-Jordà
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, Université Paris Sud, CNRS , Université Paris Saclay, 91405 Orsay Cedex, France
| | - Régis Guillot
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, Université Paris Sud, CNRS , Université Paris Saclay, 91405 Orsay Cedex, France
| | - Eric Rivière
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, Université Paris Sud, CNRS , Université Paris Saclay, 91405 Orsay Cedex, France
| | - Hala Hafez
- Lebanese University, Inorganic & Environmental Chemistry Laboratory, Faculty of Sciences I, Hadath, Lebanese University , Beirut, Lebanon
| | - Zeinab Saad
- Lebanese University, Inorganic & Environmental Chemistry Laboratory, Faculty of Sciences I, Hadath, Lebanese University , Beirut, Lebanon
| | - Jean-Jacques Girerd
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, Université Paris Sud, CNRS , Université Paris Saclay, 91405 Orsay Cedex, France
| | - Nathalie Guihéry
- Laboratoire de Chimie et Physique Quantiques, Université Toulouse III , 118 route de Narbonne, 31062 Toulouse, France
| | - Talal Mallah
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, Université Paris Sud, CNRS , Université Paris Saclay, 91405 Orsay Cedex, France
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61
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Mondal AK, Jover J, Ruiz E, Konar S. Quantitative Estimation of Ising-Type Magnetic Anisotropy in a Family ofC3-Symmetric CoIIComplexes. Chemistry 2017; 23:12550-12558. [DOI: 10.1002/chem.201702108] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Indexed: 12/14/2022]
Affiliation(s)
- Amit Kumar Mondal
- Department of Chemistry; Indian Institute of Science Education and Research Bhopal; Bhopal Bypass Road, Bhauri Bhopal 462066, MP India
| | - Jesús Jover
- Departament de Química Inorgànica I Orgànica; Secció de Química Inorgànica and Institut de Recerca de Química Teòrica i Computacional; Universitat de Barcelona; Diagonal 645 08028 Barcelona Spain
| | - Eliseo Ruiz
- Departament de Química Inorgànica I Orgànica; Secció de Química Inorgànica and Institut de Recerca de Química Teòrica i Computacional; Universitat de Barcelona; Diagonal 645 08028 Barcelona Spain
| | - Sanjit Konar
- Department of Chemistry; Indian Institute of Science Education and Research Bhopal; Bhopal Bypass Road, Bhauri Bhopal 462066, MP India
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62
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Sasnovskaya VD, Kopotkov VA, Talantsev AD, Morgunov RB, Yagubskii EB, Simonov SV, Zorina LV, Mironov VS. Synthesis, Structure, and Magnetic Properties of 1D {[Mn III(CN) 6][Mn II(dapsc)]} n Coordination Polymers: Origin of Unconventional Single-Chain Magnet Behavior. Inorg Chem 2017; 56:8926-8943. [PMID: 28686422 DOI: 10.1021/acs.inorgchem.7b00676] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Two one-dimensional cyano-bridged coordination polymers, namely, {[MnII(dapsc)][MnIII(CN)6][K(H2O)2.75(MeOH)0.5]}n·0.5n(H2O) (I) and {[MnII(dapsc)][MnIII(CN)6][K(H2O)2(MeOH)2]}n (II), based on alternating high-spin MnII(dapsc) (dapsc = 2,6-diacetylpyridine bis(semicarbazone)) complexes and low-spin orbitally degenerate hexacyanomanganate(III) complexes were synthesized and characterized structurally and magnetically. Static and dynamic magnetic measurements reveal a single-chain magnet (SCM) behavior of I with an energy barrier of Ueff ≈ 40 K. Magnetic properties of I are analyzed in detail in terms of a microscopic theory. It is shown that compound I refers to a peculiar case of SCM that does not fall into the usual Ising and Heisenberg limits due to unconventional character of the MnIII-CN-MnII spin coupling resulting from a nonmagnetic singlet ground state of orbitally degenerate complexes [MnIII(CN)6]3-. The prospects of [MnIII(CN)6]3- complex as magnetically anisotropic molecular building block for engineering molecular magnets are critically analyzed.
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Affiliation(s)
- Valentina D Sasnovskaya
- Institute of Problems of Chemical Physics, Russian Academy of Sciences , Semenov's av., 1, Chernogolovka, MD, Russian Federation
| | - Vyacheslav A Kopotkov
- Institute of Problems of Chemical Physics, Russian Academy of Sciences , Semenov's av., 1, Chernogolovka, MD, Russian Federation
| | - Artem D Talantsev
- Institute of Problems of Chemical Physics, Russian Academy of Sciences , Semenov's av., 1, Chernogolovka, MD, Russian Federation
| | - Roman B Morgunov
- Institute of Problems of Chemical Physics, Russian Academy of Sciences , Semenov's av., 1, Chernogolovka, MD, Russian Federation
| | - Eduard B Yagubskii
- Institute of Problems of Chemical Physics, Russian Academy of Sciences , Semenov's av., 1, Chernogolovka, MD, Russian Federation
| | - Sergey V Simonov
- Institute of Solid State Physics, Russian Academy of Sciences , Academician Ossipyan str., 2, Chernogolovka, MD, Russian Federation
| | - Leokadiya V Zorina
- Institute of Solid State Physics, Russian Academy of Sciences , Academician Ossipyan str., 2, Chernogolovka, MD, Russian Federation
| | - Vladimir S Mironov
- Shubnikov Institute of Crystallography of Federal Scientific Research Centre "Crystallography and Photonics", Russian Academy of Sciences , Leninskii av. 59, Moscow, Russian Federation
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63
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Sasi D, Ramkumar V, Murthy NN. Bite-Angle-Regulated Coordination Geometries: Tetrahedral and Trigonal Bipyramidal in Ni(II) with Biphenyl-Appended (2-Pyridyl)alkylamine N, N'-Bidentate Ligands. ACS OMEGA 2017; 2:2474-2481. [PMID: 31457593 PMCID: PMC6640959 DOI: 10.1021/acsomega.7b00119] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Accepted: 05/17/2017] [Indexed: 06/10/2023]
Abstract
Two simple biphenyl-appended (2-pyridyl)alkylamine N-bidentate ligands, Le and Lm, having ethylene and methylene spacers between donor groups, with bite angles Le ≈ 100° and Lm ≈ 80°, dictate pseudotetrahedral and trigonal-bipyramidal geometries in six high-spin Ni(II)-halide complexes, [Ni(Le)X2] and [Ni(Lm)2X](ClO4) (where X = Cl-, Br-, I-), respectively. The structures in the solid state, determined using X-ray crystallography, and in solution, determined using spectroscopic methods (UV-vis-NIR and paramagnetic 1H NMR), which complement each other, are described.
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64
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Vaidya S, Singh SK, Shukla P, Ansari K, Rajaraman G, Shanmugam M. Role of Halide Ions in the Nature of the Magnetic Anisotropy in Tetrahedral Co
II
Complexes. Chemistry 2017; 23:9546-9559. [DOI: 10.1002/chem.201606031] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Shefali Vaidya
- Department of ChemistryIndian Institute of Technology Bombay, Powai Mumbai- 400076, Maharashtra India
| | - Saurabh Kumar Singh
- Department of ChemistryIndian Institute of Technology Bombay, Powai Mumbai- 400076, Maharashtra India
- Department of Molecular Theory and SpectroscopyMax-Planck Institute for Chemical Energy Conversion Mülheim an der Ruhr 45470 Germany
| | - Pragya Shukla
- Department of ChemistryIndian Institute of Technology Bombay, Powai Mumbai- 400076, Maharashtra India
| | - Kamaluddin Ansari
- Department of ChemistryIndian Institute of Technology Bombay, Powai Mumbai- 400076, Maharashtra India
| | - Gopalan Rajaraman
- Department of ChemistryIndian Institute of Technology Bombay, Powai Mumbai- 400076, Maharashtra India
| | - Maheswaran Shanmugam
- Department of ChemistryIndian Institute of Technology Bombay, Powai Mumbai- 400076, Maharashtra India
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65
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Mondal AK, Goswami T, Misra A, Konar S. Probing the Effects of Ligand Field and Coordination Geometry on Magnetic Anisotropy of Pentacoordinate Cobalt(II) Single-Ion Magnets. Inorg Chem 2017; 56:6870-6878. [PMID: 28561569 DOI: 10.1021/acs.inorgchem.7b00233] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In this work, the effects of ligand field strength as well as the metal coordination geometry on magnetic anisotropy of pentacoordinated CoII complexes have been investigated using a combined experimental and theoretical approach. For that, a strategic design and synthesis of three pentacoordinate CoII complexes [Co(bbp)Cl2]·(MeOH) (1), [Co(bbp)Br2]·(MeOH) (2), and [Co(bbp)(NCS)2] (3) has been achieved by using the tridentate coordination environment of the ligand in conjunction with the accommodating terminal ligands (i.e., chloride, bromide, and thiocyanate). Detailed magnetic studies disclose the occurrence of slow magnetic relaxation behavior of CoII centers with an easy-plane magnetic anisotropy. A quantitative estimation of ZFS parameters has been successfully performed by density functional theory (DFT) calculations. Both the sign and magnitude of ZFS parameters are prophesied well by this DFT method. The theoretical results also reveal that the α → β (SOMO-SOMO) excitation contributes almost entirely to the total ZFS values for all complexes. It is worth noting that the excitation pertaining to the most positive contribution to the ZFS parameter is the dxy → dx2-y2 excitation for complexes 1 and 2, whereas for complex 3 it is the dz2 → dx2-y2 excitation.
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Affiliation(s)
- Amit Kumar Mondal
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhopal Bypass Road, Bhauri, Bhopal 462066, Madhya Pradesh, India
| | - Tamal Goswami
- Department of Chemistry, University of North Bengal , Siliguri, Darjeeling 734013, West Bengal, India
| | - Anirban Misra
- Department of Chemistry, University of North Bengal , Siliguri, Darjeeling 734013, West Bengal, India
| | - Sanjit Konar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhopal Bypass Road, Bhauri, Bhopal 462066, Madhya Pradesh, India
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66
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Bar AK, Gogoi N, Pichon C, Goli VMLDP, Thlijeni M, Duhayon C, Suaud N, Guihéry N, Barra AL, Ramasesha S, Sutter JP. Pentagonal Bipyramid Fe II Complexes: Robust Ising-Spin Units towards Heteropolynuclear Nanomagnets. Chemistry 2017; 23:4380-4396. [PMID: 28118518 DOI: 10.1002/chem.201605549] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Indexed: 11/07/2022]
Abstract
Pentagonal bipyramid FeII complexes have been investigated to evaluate their potential as Ising-spin building units for the preparation of heteropolynuclear complexes that are likely to behave as single-molecule magnets (SMMs). The considered monometallic complexes were prepared from the association of a divalent metal ion with pentadentate ligands that have a 2,6-diacetylpyridine bis(hydrazone) core (H2 LN3O2R ). Their magnetic anisotropy was established by magnetometry to reveal their zero-field splitting (ZFS) parameter D, which ranged between -4 and -13 cm-1 and was found to be modulated by the apical ligands (ROH versus Cl). The alteration of the D value by N-bound axial CN ligands, upon association with cyanometallates, was also assessed for heptacoordinated FeII as well as for related NiII and CoII derivatives. In all cases, N-coordinated cyanide ligands led to large magnetic anisotropy (i.e., -8 to -18 cm-1 for Fe and Ni, +33 cm-1 for Co). Ab initio calculations were performed on three FeII complexes, which enabled one to rationalize the role of the ligand on the nature and magnitude of the magnetic anisotropy. Starting from the pre-existing heptacoordinated complexes, a series of pentanuclear compounds were obtained by reactions with paramagnetic [W(CN)8 ]3- . Magnetic studies revealed the occurrence of ferromagnetic interactions between the spin carriers in all the heterometallic systems. Field-induced slow magnetic relaxation was observed for mononuclear FeII complexes (Ueff /kB up to 53 K (37 cm-1 ), τ0 =5×10-9 s), and SMM behavior was evidenced for a heteronuclear [Fe3 W2 ] derivative (Ueff /kB =35 K and τ0 =4.6 10-10 s), which confirmed that the parent complexes were robust Ising-type building units. High-field EPR spectroscopic investigation of the ZFS parameters for a Ni derivative is also reported.
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Affiliation(s)
- Arun Kumar Bar
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205, route de Narbonne, 31077, Toulouse, France.,Université de Toulouse, UPS, INPT, LCC, 31077, Toulouse, France
| | - Nayanmoni Gogoi
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205, route de Narbonne, 31077, Toulouse, France.,Université de Toulouse, UPS, INPT, LCC, 31077, Toulouse, France
| | - Céline Pichon
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205, route de Narbonne, 31077, Toulouse, France.,Université de Toulouse, UPS, INPT, LCC, 31077, Toulouse, France
| | - V M L Durga Prasad Goli
- Indian Institute of Science, Bangalore, 560012, India.,Ulsan National Institute of Science and Technology (UNIST), 50, UNIST-gil, Ulsan, 44919, Republic of Korea
| | - Mehrez Thlijeni
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205, route de Narbonne, 31077, Toulouse, France.,Université de Toulouse, UPS, INPT, LCC, 31077, Toulouse, France
| | - Carine Duhayon
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205, route de Narbonne, 31077, Toulouse, France.,Université de Toulouse, UPS, INPT, LCC, 31077, Toulouse, France
| | - Nicolas Suaud
- Laboratoire de Chimie et Physique Quantiques, UMR5626, IRSAMC, Université de Toulouse 3, Paul Sabatier, 118 route de Narbonne, 31062, Toulouse Cedex 9, France
| | - Nathalie Guihéry
- Laboratoire de Chimie et Physique Quantiques, UMR5626, IRSAMC, Université de Toulouse 3, Paul Sabatier, 118 route de Narbonne, 31062, Toulouse Cedex 9, France
| | - Anne-Laure Barra
- Laboratoire National des Champs Magnétiques Intenses, UPR CNRS 3228, Université Grenoble Alpes, 25, Avenue des Martyrs, B.P. 166, 38042, Grenoble Cedex 9, France
| | - S Ramasesha
- Indian Institute of Science, Bangalore, 560012, India
| | - Jean-Pascal Sutter
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205, route de Narbonne, 31077, Toulouse, France.,Université de Toulouse, UPS, INPT, LCC, 31077, Toulouse, France
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67
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Suturina EA, Nehrkorn J, Zadrozny JM, Liu J, Atanasov M, Weyhermüller T, Maganas D, Hill S, Schnegg A, Bill E, Long JR, Neese F. Magneto-Structural Correlations in Pseudotetrahedral Forms of the [Co(SPh)4]2– Complex Probed by Magnetometry, MCD Spectroscopy, Advanced EPR Techniques, and ab Initio Electronic Structure Calculations. Inorg Chem 2017; 56:3102-3118. [DOI: 10.1021/acs.inorgchem.7b00097] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Elizaveta A. Suturina
- Max Planck Institute for Chemical Energy Conversion, Stiftstraße 34-36, Mülheim an der Ruhr 45470, Germany
- Novosibirsk State University, Pirogova 2, 630090 Novosibirsk, Russia
| | - Joscha Nehrkorn
- Berlin Joint EPR Lab, Institute for Nanospectroscopy, Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstraße
5, 12489 Berlin, Germany
| | - Joseph M. Zadrozny
- Department of Chemistry, University of California Berkeley, Berkeley, California 94720, United States
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Junjie Liu
- National High Magnetic Field Laboratory, Tallahassee, Florida 32310, United States
- Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1
3PU, United Kingdom
| | - Mihail Atanasov
- Max Planck Institute for Chemical Energy Conversion, Stiftstraße 34-36, Mülheim an der Ruhr 45470, Germany
- Bulgarian Academy of Sciences, Institute of General and Inorganic
Chemistry, Akad. Georgi
Bontchev Street 11, 1113 Sofia, Bulgaria
| | - Thomas Weyhermüller
- Max Planck Institute for Chemical Energy Conversion, Stiftstraße 34-36, Mülheim an der Ruhr 45470, Germany
| | - Dimitrios Maganas
- Max Planck Institute for Chemical Energy Conversion, Stiftstraße 34-36, Mülheim an der Ruhr 45470, Germany
| | - Stephen Hill
- National High Magnetic Field Laboratory, Tallahassee, Florida 32310, United States
- Department of Physics, Florida State University, Tallahassee, Florida 32306, United States
| | - Alexander Schnegg
- Berlin Joint EPR Lab, Institute for Nanospectroscopy, Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstraße
5, 12489 Berlin, Germany
| | - Eckhard Bill
- Max Planck Institute for Chemical Energy Conversion, Stiftstraße 34-36, Mülheim an der Ruhr 45470, Germany
| | - Jeffrey R. Long
- Department of Chemistry, University of California Berkeley, Berkeley, California 94720, United States
| | - Frank Neese
- Max Planck Institute for Chemical Energy Conversion, Stiftstraße 34-36, Mülheim an der Ruhr 45470, Germany
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68
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Cahier B, Perfetti M, Zakhia G, Naoufal D, El‐Khatib F, Guillot R, Rivière E, Sessoli R, Barra A, Guihéry N, Mallah T. Magnetic Anisotropy in Pentacoordinate Ni
II
and Co
II
Complexes: Unraveling Electronic and Geometrical Contributions. Chemistry 2017; 23:3648-3657. [DOI: 10.1002/chem.201604872] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Indexed: 12/26/2022]
Affiliation(s)
- Benjamin Cahier
- Institut de Chimie Moléculaire et des Matériaux O'Orsay, CNRS Université Paris Sud 11, Université Paris Saclay 91405 Orsay Cedex France
| | - Mauro Perfetti
- Dipartimento di Chimica “U. Schiff” Università degli studi di Firenze & INSTM UdR Firenze Via della Lastruccia 3–13 50019 Sesto Fiorentino Italy
- Universität Stuttgart Institut für Physikalische Chemie Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Georges Zakhia
- Institut de Chimie Moléculaire et des Matériaux O'Orsay, CNRS Université Paris Sud 11, Université Paris Saclay 91405 Orsay Cedex France
| | - Daoud Naoufal
- Laboratoire de Chimie de Coordination Inorganique et Organométallique, LCIO Université Libanaise, Faculté des Sciences I Hadath Lebanon
| | - Fatima El‐Khatib
- Institut de Chimie Moléculaire et des Matériaux O'Orsay, CNRS Université Paris Sud 11, Université Paris Saclay 91405 Orsay Cedex France
| | - Régis Guillot
- Institut de Chimie Moléculaire et des Matériaux O'Orsay, CNRS Université Paris Sud 11, Université Paris Saclay 91405 Orsay Cedex France
| | - Eric Rivière
- Institut de Chimie Moléculaire et des Matériaux O'Orsay, CNRS Université Paris Sud 11, Université Paris Saclay 91405 Orsay Cedex France
| | - Roberta Sessoli
- Dipartimento di Chimica “U. Schiff” Università degli studi di Firenze & INSTM UdR Firenze Via della Lastruccia 3–13 50019 Sesto Fiorentino Italy
| | - Anne‐Laure Barra
- Laboratoire National des Champs Magnétiques Intenses, UPR CNRS 3228 Université J. Fourier 25, avenue des Martyrs, B.P. 166 38042 Grenoble Cedex 9 France
| | - Nathalie Guihéry
- Laboratoire de Chimie et Physique Quantiques Université de Toulouse III 118, route de Narbonne 31062 Toulouse France
| | - Talal Mallah
- Institut de Chimie Moléculaire et des Matériaux O'Orsay, CNRS Université Paris Sud 11, Université Paris Saclay 91405 Orsay Cedex France
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69
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Shao F, Cahier B, Rivière E, Guillot R, Guihéry N, Campbell VE, Mallah T. Structural Dependence of the Ising-type Magnetic Anisotropy and of the Relaxation Time in Mononuclear Trigonal Bipyramidal Co(II) Single Molecule Magnets. Inorg Chem 2017; 56:1104-1111. [DOI: 10.1021/acs.inorgchem.6b01966] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Feng Shao
- Institut de Chimie Moléculaire et des Matériaux
d’Orsay, CNRS, Université Paris Sud, Université Paris Saclay, 91405 Orsay Cedex, France
| | - Benjamin Cahier
- Institut de Chimie Moléculaire et des Matériaux
d’Orsay, CNRS, Université Paris Sud, Université Paris Saclay, 91405 Orsay Cedex, France
| | - Eric Rivière
- Institut de Chimie Moléculaire et des Matériaux
d’Orsay, CNRS, Université Paris Sud, Université Paris Saclay, 91405 Orsay Cedex, France
| | - Régis Guillot
- Institut de Chimie Moléculaire et des Matériaux
d’Orsay, CNRS, Université Paris Sud, Université Paris Saclay, 91405 Orsay Cedex, France
| | - Nathalie Guihéry
- Laboratiore de Chimie et Physique Quantiques, Université Toulouse III, 118 route de Narbonne, 31062 Toulouse, France
| | - Victoria E. Campbell
- Institut de Chimie Moléculaire et des Matériaux
d’Orsay, CNRS, Université Paris Sud, Université Paris Saclay, 91405 Orsay Cedex, France
| | - Talal Mallah
- Institut de Chimie Moléculaire et des Matériaux
d’Orsay, CNRS, Université Paris Sud, Université Paris Saclay, 91405 Orsay Cedex, France
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70
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Ding ZY, Meng YS, Xiao Y, Zhang YQ, Zhu YY, Gao S. Probing the influence of molecular symmetry on the magnetic anisotropy of octahedral cobalt(ii) complexes. Inorg Chem Front 2017. [DOI: 10.1039/c7qi00547d] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A series of field-induced cobalt(ii) SIMs exhibit varying axial zero-field splitting parameter D values from positive to negative with the increased distortion of the octahedral geometry.
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Affiliation(s)
- Zhong-Yu Ding
- School of Chemistry and Chemical Engineering
- Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices
- Hefei 230009
- China
| | - Yin-Shan Meng
- 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
| | - Yi Xiao
- School of Chemistry and Chemical Engineering
- Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices
- Hefei 230009
- China
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS
- School of Physical Science and Technology
- Nanjing Normal University
- Nanjing 210023
- China
| | - Yuan-Yuan Zhu
- School of Chemistry and Chemical Engineering
- Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices
- Hefei 230009
- China
- State Key Laboratory of Fine Chemicals
| | - 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
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71
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Pavlov AA, Nelyubina YV, Kats SV, Penkova LV, Efimov NN, Dmitrienko AO, Vologzhanina AV, Belov AS, Voloshin YZ, Novikov VV. Polymorphism in a Cobalt-Based Single-Ion Magnet Tuning Its Barrier to Magnetization Relaxation. J Phys Chem Lett 2016; 7:4111-4116. [PMID: 27689621 DOI: 10.1021/acs.jpclett.6b02091] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
A large barrier to magnetization reversal, a signature of a good single-molecule magnet (SMM), strongly depends on the structural environment of a paramagnetic metal ion. In a crystalline state, where SMM properties are usually measured, this environment is influenced by crystal packing, which may be different for the same chemical compound, as in polymorphs. Here we show that polymorphism can dramatically change the magnetic behavior of an SMM even with a very rigid coordination geometry. For a cobalt(II) clathrochelate, it results in an increase of the effective barrier from 109 to 180 cm-1, the latter value being the largest one reported to date for cobalt-based SMMs. Our finding thus highlights the importance of identifying possible polymorphic phases in search of new, even more efficient SMMs.
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Affiliation(s)
- Alexander A Pavlov
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences , 119991 Moscow, Russia
| | - Yulia V Nelyubina
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences , 119991 Moscow, Russia
| | - Svitlana V Kats
- Kyiv National Taras Shevchenko University , 01601 Kyiv, Ukraine
| | | | - Nikolay N Efimov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences , 119991 Moscow, Russia
| | - Artem O Dmitrienko
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences , 119991 Moscow, Russia
| | - Anna V Vologzhanina
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences , 119991 Moscow, Russia
| | - Alexander S Belov
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences , 119991 Moscow, Russia
| | - Yan Z Voloshin
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences , 119991 Moscow, Russia
| | - Valentin V Novikov
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences , 119991 Moscow, Russia
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72
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Charron G, Malkin E, Rogez G, Batchelor LJ, Mazerat S, Guillot R, Guihéry N, Barra AL, Mallah T, Bolvin H. Unraveling σ and π Effects on Magnetic Anisotropy incis-NiA4B2Complexes: Magnetization, HF-HFEPR Studies, First-Principles Calculations, and Orbital Modeling. Chemistry 2016; 22:16850-16862. [DOI: 10.1002/chem.201602837] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Gaëlle Charron
- Institut de Chimie Moléculaire et des Matériaux d'Orsay; CNRS; Université de Paris-Sud 11; 91405 Orsay Cedex France
- Laboratoire MSC; Université Paris 7 Diderot; Paris France
| | - Elena Malkin
- Laboratoire de Chimie et Physique Quantiques; CNRS; Université Toulouse III; 118 route de Narbonne 31062 Toulouse France
- CTCC; Department of Chemistry; University of Tromsø; 9037 Tromsø Norway
| | - Guillaume Rogez
- Institut de Physique et Chimie des Matériaux de Strasbourg; Université de Strasbourg; 23 rue du Loess, BP 43 67034 Strasbourg Cedex 2 France
| | - Luke J. Batchelor
- Institut de Chimie Moléculaire et des Matériaux d'Orsay; CNRS; Université de Paris-Sud 11; 91405 Orsay Cedex France
| | - Sandra Mazerat
- Institut de Chimie Moléculaire et des Matériaux d'Orsay; CNRS; Université de Paris-Sud 11; 91405 Orsay Cedex France
| | - Régis Guillot
- Institut de Chimie Moléculaire et des Matériaux d'Orsay; CNRS; Université de Paris-Sud 11; 91405 Orsay Cedex France
| | - Nathalie Guihéry
- Laboratoire de Chimie et Physique Quantiques; CNRS; Université Toulouse III; 118 route de Narbonne 31062 Toulouse France
| | - Anne-Laure Barra
- Laboratoire National des Champs Magnétiques Intenses; CNRS; 25 rue des Martyrs, B.P. 166 38042 Grenoble Cedex 9 France
| | - Talal Mallah
- Institut de Chimie Moléculaire et des Matériaux d'Orsay; CNRS; Université de Paris-Sud 11; 91405 Orsay Cedex France
| | - Hélène Bolvin
- Laboratoire de Chimie et Physique Quantiques; CNRS; Université Toulouse III; 118 route de Narbonne 31062 Toulouse France
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73
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Shao D, Zhang SL, Shi L, Zhang YQ, Wang XY. Probing the Effect of Axial Ligands on Easy-Plane Anisotropy of Pentagonal-Bipyramidal Cobalt(II) Single-Ion Magnets. Inorg Chem 2016; 55:10859-10869. [DOI: 10.1021/acs.inorgchem.6b00854] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dong Shao
- State
Key Laboratory of Coordination Chemistry, Collaborative Innovation
Center of Advanced Microstructures, School of Chemistry and Chemical
Engineering, Nanjing University, Nanjing 210023, China
| | - Shao-Liang Zhang
- State
Key Laboratory of Coordination Chemistry, Collaborative Innovation
Center of Advanced Microstructures, School of Chemistry and Chemical
Engineering, Nanjing University, Nanjing 210023, China
| | - Le Shi
- State
Key Laboratory of Coordination Chemistry, Collaborative Innovation
Center of Advanced Microstructures, School of Chemistry and Chemical
Engineering, Nanjing University, Nanjing 210023, China
| | - Yi-Quan Zhang
- Jiangsu
Key Laboratory for NSLSCS, School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, China
| | - Xin-Yi Wang
- State
Key Laboratory of Coordination Chemistry, Collaborative Innovation
Center of Advanced Microstructures, School of Chemistry and Chemical
Engineering, Nanjing University, Nanjing 210023, China
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74
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Tools for Predicting the Nature and Magnitude of Magnetic Anisotropy in Transition Metal Complexes: Application to Co(II) Complexes. MAGNETOCHEMISTRY 2016. [DOI: 10.3390/magnetochemistry2030031] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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75
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Mondal AK, Khatua S, Tomar K, Konar S. Field-Induced Single-Ion-Magnetic Behavior of Octahedral CoIIin a Two-Dimensional Coordination Polymer. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600569] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Amit Kumar Mondal
- Department of Chemistry; Indian Institute of Science Education and Research Bhopal; Bhopal by-pass road 462066, MP Bhauri Bhopal India
| | - Sajal Khatua
- Department of Chemistry; Indian Institute of Science Education and Research Bhopal; Bhopal by-pass road 462066, MP Bhauri Bhopal India
| | - Kapil Tomar
- Department of Chemistry; Indian Institute of Science Education and Research Bhopal; Bhopal by-pass road 462066, MP Bhauri Bhopal India
| | - Sanjit Konar
- Department of Chemistry; Indian Institute of Science Education and Research Bhopal; Bhopal by-pass road 462066, MP Bhauri Bhopal India
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76
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Pal A, Kumar SC, Ghosh AK, Lin CH, Rivière E, Mallah T, Ghosh R. Synthesis, X-ray structure and catecholase activity of an antiferromagnetically coupled trinuclear nickel(II) complex. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.03.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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77
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Shao F, Cahier B, Guihéry N, Rivière E, Guillot R, Barra AL, Lan Y, Wernsdorfer W, Campbell VE, Mallah T. Tuning the Ising-type anisotropy in trigonal bipyramidal Co(II) complexes. Chem Commun (Camb) 2016; 51:16475-8. [PMID: 26440770 DOI: 10.1039/c5cc07741a] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This paper demonstrates the engineering and tuning of Ising-type magnetic anisotropy in trigonal bipyramidal Co(II) complexes. Here, we predict that employing a ligand that forces a trigonal bipyramidal arrangement and has weak equatorial σ-donating atoms, increases (in absolute value) the negative zero field splitting parameter D. With these considerations in mind, we used a sulfur containing ligand (NS3(iPr)), which imposes a trigonal bipyramidal geometry to the central Co(II) ion with long equatorial Co-S bonds. The resulting complex exhibits a larger anisotropy barrier and a longer relaxation time in comparison to the complex prepared with a nitrogen containing ligand (Me6tren).
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Affiliation(s)
- Feng Shao
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, CNRS, Université Paris Sud, Université Paris Saclay, 91405 Orsay Cedex, France.
| | - Benjamin Cahier
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, CNRS, Université Paris Sud, Université Paris Saclay, 91405 Orsay Cedex, France.
| | - Nathalie Guihéry
- Laboratoire de Chimie et Physique Quantiques, Université de Toulouse III, 118 route de Narbonne, 31062 Toulouse, France
| | - Eric Rivière
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, CNRS, Université Paris Sud, Université Paris Saclay, 91405 Orsay Cedex, France.
| | - Régis Guillot
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, CNRS, Université Paris Sud, Université Paris Saclay, 91405 Orsay Cedex, France.
| | - Anne-Laure Barra
- Laboratoire National des Champs Magnétiques Intenses, UPR CNRS 3228, Université J. Fourier, 25, avenue des Martyrs, B.P. 166, 38042 Grenoble, France
| | - Yanhua Lan
- Insitut Néel, CNRS, Université Grenoble Alpes, 25 rue des Martyrs, 38042 Grenoble, France
| | - Wolfgang Wernsdorfer
- Insitut Néel, CNRS, Université Grenoble Alpes, 25 rue des Martyrs, 38042 Grenoble, France
| | - Victoria E Campbell
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, CNRS, Université Paris Sud, Université Paris Saclay, 91405 Orsay Cedex, France.
| | - Talal Mallah
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, CNRS, Université Paris Sud, Université Paris Saclay, 91405 Orsay Cedex, France.
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78
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Singh SK, Rajaraman G. Deciphering the origin of giant magnetic anisotropy and fast quantum tunnelling in Rhenium(IV) single-molecule magnets. Nat Commun 2016; 7:10669. [PMID: 26883278 PMCID: PMC4757791 DOI: 10.1038/ncomms10669] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 01/08/2016] [Indexed: 12/21/2022] Open
Abstract
Single-molecule magnets represent a promising route to achieve potential applications such as high-density information storage and spintronics devices. Among others, 4d/5d elements such as Re(IV) ion are found to exhibit very large magnetic anisotropy, and inclusion of this ion-aggregated clusters yields several attractive molecular magnets. Here, using ab intio calculations, we unravel the source of giant magnetic anisotropy associated with the Re(IV) ions by studying a series of mononuclear Re(IV) six coordinate complexes. The low-lying doublet states are found to be responsible for large magnetic anisotropy and the sign of the axial zero-field splitting parameter (D) can be categorically predicted based on the position of the ligand coordination. Large transverse anisotropy along with large hyperfine interactions opens up multiple relaxation channels leading to a fast quantum tunnelling of the magnetization (QTM) process. Enhancing the Re-ligand covalency is found to significantly quench the QTM process. Rhenium(IV) complexes are magnetically anisotropic although the origin of this anisotropy is poorly explored compared to 3d transition metals and lanthanides. Here, the authors computationally examine the effects of ligand donor ability and structural distortion on magnetic anisotropy for a series of rhenium(IV) complexes.
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Affiliation(s)
- Saurabh Kumar Singh
- Department of Chemistry, Indian Institute of Technology, Bombay Powai, Mumbai 400076, India
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology, Bombay Powai, Mumbai 400076, India
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79
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Magnetic anisotropy in two- to eight-coordinated transition–metal complexes: Recent developments in molecular magnetism. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2015.06.013] [Citation(s) in RCA: 304] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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80
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Shao D, Shi L, Zhang SL, Zhao XH, Wu DQ, Wei XQ, Wang XY. Syntheses, structures, and magnetic properties of three new chain compounds based on a pentagonal bipyramidal Co(ii) building block. CrystEngComm 2016. [DOI: 10.1039/c5ce02594j] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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81
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Mondal AK, Parmar VS, Biswas S, Konar S. Tetrahedral MII based binuclear double-stranded helicates: single-ion-magnet and fluorescence behaviour. Dalton Trans 2016; 45:4548-57. [DOI: 10.1039/c5dt04173b] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
It has been demonstrated that the slow relaxation of magnetization can be achieved in high spin tetrahedral CoII centres with an easy-plane magnetic anisotropy within the double-stranded helicates. The photoluminescence properties of the Zn analogues were studied in different solvents.
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Affiliation(s)
| | | | | | - Sanjit Konar
- Department of Chemistry
- IISER Bhopal
- Bhopal 462066
- India
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82
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Krzystek J, Telser J. Measuring giant anisotropy in paramagnetic transition metal complexes with relevance to single-ion magnetism. Dalton Trans 2016; 45:16751-16763. [DOI: 10.1039/c6dt01754a] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
“Giant magnetic anisotropy” is a phenomenon identified in certain coordination complexes of nd- and nf-block ions. The strengths and weaknesses of multiple methods used to measure it are evaluated.
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Affiliation(s)
- J. Krzystek
- National High Magnetic Field Laboratory
- Florida State University
- Tallahassee
- USA
| | - Joshua Telser
- Department of Biological
- Chemical and Physical Sciences
- Roosevelt University
- Chicago
- USA
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83
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Ridier K, Gillon B, Gukasov A, Chaboussant G, Cousson A, Luneau D, Borta A, Jacquot JF, Checa R, Chiba Y, Sakiyama H, Mikuriya M. Polarized Neutron Diffraction as a Tool for Mapping Molecular Magnetic Anisotropy: Local Susceptibility Tensors in CoII
Complexes. Chemistry 2015; 22:724-35. [DOI: 10.1002/chem.201503400] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Indexed: 11/09/2022]
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84
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Meng YS, Mo Z, Wang BW, Zhang YQ, Deng L, Gao S. Observation of the single-ion magnet behavior of d 8 ions on two-coordinate Co(i)-NHC complexes. Chem Sci 2015; 6:7156-7162. [PMID: 29861952 PMCID: PMC5951210 DOI: 10.1039/c5sc02611c] [Citation(s) in RCA: 98] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2015] [Accepted: 09/10/2015] [Indexed: 11/21/2022] Open
Abstract
The slow magnetic relaxation typical for single-ion magnets has been known for certain low-coordinate 3d metal complexes with d6, d7, and d9 electronic configurations, but never for d8 complexes. Herein, we report a study on two-coordinate d8 cobalt(i)-N-heterocyclic carbene complexes, for which slow magnetic relaxation behavior was observed for [Co(IMes)2][BPh4] (IMes: 1,3-dimesitylimidazol-2-ylidene) under an applied dc field. The system represents the first d8 single-ion magnet, and features a fitted energy barrier of Ueff = 21.3 cm-1 and pre-exponential factor of τ0 = 6.6 × 10-6 s. The analog two-coordinate cobalt(i) complexes with different NHC ligands, [Co(sIMes)2][BPh4] (sIMes: 1,3-dimesitylimidazolin-2-ylidene) and [Co(IAd)2][BArF4] (IAd: 1,3-dimesitylimidazol-2-ylidene; BArF4: tetra(3,5-ditrifluoromethylphenyl)borate), do not show such single-ion magnet behaviour. Ab initio calculations imply that the dihedral angle between the two NHC planes and the degree of unsaturation of the NHC ligands can dramatically alter the D value of the two-coordinate cobalt(i)-NHC ions, possibly via changing of the Co-NHC π-interactions, and hence affect the spin-orbit coupling splitting.
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Affiliation(s)
- Yin-Shan Meng
- Beijing National Laboratory of Molecular Science , State Key Laboratory of Rare Earth Materials Chemistry and Applications , College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , P. R. China .
| | - Zhenbo Mo
- State Key Laboratory of Organometallic Chemistry , Shanghai Institute of Organic Chemistry , Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , P. R. China .
| | - Bing-Wu Wang
- Beijing National Laboratory of Molecular Science , State Key Laboratory of Rare Earth Materials Chemistry and Applications , College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , P. R. China .
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS , School of Physical Science and Technology , Nanjing Normal University , Nanjing 210023 , P. R. China .
| | - Liang Deng
- State Key Laboratory of Organometallic Chemistry , Shanghai Institute of Organic Chemistry , Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , P. R. China .
| | - Song Gao
- Beijing National Laboratory of Molecular Science , 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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85
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Pinkowicz D, Southerland HI, Avendaño C, Prosvirin A, Sanders C, Wernsdorfer W, Pedersen KS, Dreiser J, Clérac R, Nehrkorn J, Simeoni GG, Schnegg A, Holldack K, Dunbar KR. Cyanide Single-Molecule Magnets Exhibiting Solvent Dependent Reversible "On" and "Off" Exchange Bias Behavior. J Am Chem Soc 2015; 137:14406-22. [PMID: 26542645 DOI: 10.1021/jacs.5b09378] [Citation(s) in RCA: 107] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The syntheses, structures, and magnetic properties of four new complex salts, (PPN){[Mn(III)(salphen)(MeOH)]2[M(III)(CN)6]}·7MeOH (Mn2M·7MeOH) (M = Fe, Ru, Os and Co; PPN(+) = bis(triphenylphosphoranylidene)ammonium cation; H2salphen = N,N'-bis(salicylidene)-1,2-diaminobenzene), and a mixed metal Co/Os analogue (PPN){[Mn(III)(salphen)(MeOH)]2[Co(III)0.92Os(III)0.08(CN)6]}·7MeOH were undertaken. It was found that all compounds exhibit switchable single-molecule magnet (SMM) and exchange-bias behavior depending on the interstitial methanol content. The pristine (PPN){[Mn(salphen)(MeOH)]2[Os(CN)6]}·7MeOH (Mn2Os·7MeOH) behaves as an SMM with an effective barrier for the magnetization reversal, (Ueff/kB), of 17.1 K. Upon desolvation, Mn2Os exhibits an increase of Ueff/kB to 42.0 K and an opening of the hysteresis loop observable at 1.8 K. Mn2Os·7MeOH shows also exchange-bias behavior with magnetic hysteresis loops exhibiting a shift in the quantum tunneling to 0.25 T from zero-field. The Fe(III) and Ru(III) analogues were prepared as reference compounds for assessing the effect of the 5d versus 4d and 3d metal ions on the SMM properties. These compounds are also SMMs and exhibit similar effects but with lower energy barriers. These findings underscore the importance of introducing heavy transition elements into SMMs to improve their slow relaxation of the magnetization properties. The (PPN){[Mn(III)(salphen)(MeOH)]2[Co(III)(CN)6]}·7MeOH (Mn2Co·7MeOH) analogue with a diamagnetic Co(III) central atom and the mixed Co/Os (PPN){[Mn(III)(salphen)(MeOH)]2[Co(III)0.92Os(III)0.08(CN)6]}·7MeOH (Mn2Co/Os·7MeOH) "magnetically diluted" system with a 9:1 Co/Os metal ratio were prepared in order to further probe the nature of the energy barrier increase upon desolvation of Mn2Os. In addition, inelastic neutron scattering and frequency-domain Fourier-transform THz electron paramagnetic resonance spectra obtained on Mn2Os·7MeOH and Mn2Os in combination with the magnetic data revealed the presence of anisotropic exchange interactions between Mn(III) and Os(III) ions.
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Affiliation(s)
- Dawid Pinkowicz
- Faculty of Chemistry, Jagiellonian University , Ingardena 3, 30-060 Kraków, Poland
| | - Heather I Southerland
- Department of Chemistry, Texas A&M University , College Station, Texas 77842-3012, United States
| | - Carolina Avendaño
- Department of Chemistry, Texas A&M University , College Station, Texas 77842-3012, United States
| | - Andrey Prosvirin
- Department of Chemistry, Texas A&M University , College Station, Texas 77842-3012, United States
| | - Codi Sanders
- Department of Chemistry, Texas A&M University , College Station, Texas 77842-3012, United States
| | - Wolfgang Wernsdorfer
- Institute Néel , CNRS, BP 166, 25 Avenue de Martyrs, Grenoble, 38042 Cedex 9, France
| | - Kasper S Pedersen
- Department of Chemistry, University of Copenhagen , Universitetsparken 5, DK-2100 Copenhagen, Denmark.,CNRS, CRPP, UPR 8641, F-33600 Pessac, France.,Univ. Bordeaux, CRPP, UPR 8641, F-33600 Pessac, France
| | - Jan Dreiser
- Institute of Condensed Matter Physics, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland and Swiss Light Source, Paul Scherrer Insitut , CH-5232 Villigen PSI, Switzerland
| | - Rodolphe Clérac
- CNRS, CRPP, UPR 8641, F-33600 Pessac, France.,Univ. Bordeaux, CRPP, UPR 8641, F-33600 Pessac, France
| | - Joscha Nehrkorn
- Institut Nanospektroskopie, Helmholtz-Zentrum Berlin für Materialien und Energie, Kekulestr. 5, D-12489 Berlin, Germany.,Berlin Joint EPR Laboratory, Helmholtz-Zentrum Berlin für Materialien und Energie, Kekulestr. 5, D-12489 Berlin, Germany
| | - Giovanna G Simeoni
- Heinz Meier-Leibnitz Zentrum (MLZ) and Physics Department, Technical University of Munich , Lichtenbergstr. 1, 85748 Garching, Germany
| | - Alexander Schnegg
- Institut Nanospektroskopie, Helmholtz-Zentrum Berlin für Materialien und Energie, Kekulestr. 5, D-12489 Berlin, Germany.,Berlin Joint EPR Laboratory, Helmholtz-Zentrum Berlin für Materialien und Energie, Kekulestr. 5, D-12489 Berlin, Germany
| | - Karsten Holldack
- Institut für Methoden und Instrumentierung der Forschung mit Synchrotronstrahlung, Albert-Einstein-Str. 15, D-12489 Berlin, Germany
| | - Kim R Dunbar
- Department of Chemistry, Texas A&M University , College Station, Texas 77842-3012, United States
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86
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Açıkgöz M, Gnutek P, Rudowicz C. Magnetostructural relationships for Ni(II) ions at octahedral sites in [Ni Zn1−(C2O4)(dmiz)2]: Computational study of zero-field splitting and using superposition model. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.08.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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87
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Jiang SD, Maganas D, Levesanos N, Ferentinos E, Haas S, Thirunavukkuarasu K, Krzystek J, Dressel M, Bogani L, Neese F, Kyritsis P. Direct Observation of Very Large Zero-Field Splitting in a Tetrahedral Ni(II)Se4 Coordination Complex. J Am Chem Soc 2015; 137:12923-8. [PMID: 26352187 DOI: 10.1021/jacs.5b06716] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The high-spin (S = 1) tetrahedral Ni(II) complex [Ni{(i)Pr2P(Se)NP(Se)(i)Pr2}2] was investigated by magnetometry, spectroscopic, and quantum chemical methods. Angle-resolved magnetometry studies revealed the orientation of the magnetization principal axes. The very large zero-field splitting (zfs), D = 45.40(2) cm(-1), E = 1.91(2) cm(-1), of the complex was accurately determined by far-infrared magnetic spectroscopy, directly observing transitions between the spin sublevels of the triplet ground state. These are the largest zfs values ever determined--directly--for a high-spin Ni(II) complex. Ab initio calculations further probed the electronic structure of the system, elucidating the factors controlling the sign and magnitude of D. The latter is dominated by spin-orbit coupling contributions of the Ni ions, whereas the corresponding effects of the Se atoms are remarkably smaller.
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Affiliation(s)
- Shang-Da Jiang
- 1. Physikalisches Institut, Universität Stuttgart , Pfaffenwaldring 57, D-70550, Stuttgart, Germany
| | - Dimitrios Maganas
- Max-Planck-Institut für Chemische Energiekonversion , Stiftstrasse 34-36, D-45470 Mülheim an der Ruhr, Germany
| | - Nikolaos Levesanos
- Laboratory of Inorganic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens , Panepistimiopolis, Athens, 157 71 Greece
| | - Eleftherios Ferentinos
- Laboratory of Inorganic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens , Panepistimiopolis, Athens, 157 71 Greece
| | - Sabrina Haas
- 1. Physikalisches Institut, Universität Stuttgart , Pfaffenwaldring 57, D-70550, Stuttgart, Germany
| | | | - J Krzystek
- National High Magnetic Field Laboratory, Florida State University , Tallahassee, Florida 32310, United States
| | - Martin Dressel
- 1. Physikalisches Institut, Universität Stuttgart , Pfaffenwaldring 57, D-70550, Stuttgart, Germany
| | - Lapo Bogani
- 1. Physikalisches Institut, Universität Stuttgart , Pfaffenwaldring 57, D-70550, Stuttgart, Germany
| | - Frank Neese
- Max-Planck-Institut für Chemische Energiekonversion , Stiftstrasse 34-36, D-45470 Mülheim an der Ruhr, Germany
| | - Panayotis Kyritsis
- Laboratory of Inorganic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens , Panepistimiopolis, Athens, 157 71 Greece
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88
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Marriott KER, Bhaskaran L, Wilson C, Medarde M, Ochsenbein ST, Hill S, Murrie M. Pushing the limits of magnetic anisotropy in trigonal bipyramidal Ni(ii). Chem Sci 2015; 6:6823-6828. [PMID: 28757973 PMCID: PMC5508675 DOI: 10.1039/c5sc02854j] [Citation(s) in RCA: 109] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Accepted: 09/07/2015] [Indexed: 12/24/2022] Open
Abstract
High-field EPR and magnetic studies of a high-spin Ni(ii) trigonal bipyramidal complex reveal a giant axial magnetic anisotropy and a rare field-induced slow magnetic relaxation.
Monometallic complexes based on 3d transition metal ions in certain axial coordination environments can exhibit appreciably enhanced magnetic anisotropy, important for memory applications, due to stabilisation of an unquenched orbital moment. For high-spin trigonal bipyramidal Ni(ii), if competing structural distortions can be minimised, this may result in an axial anisotropy that is at least an order of magnitude stronger than found for orbitally non-degenerate octahedral complexes. Broadband, high-field EPR studies of [Ni(MDABCO)2Cl3]ClO4 (1) confirm an unprecedented axial magnetic anisotropy, which pushes the limits of the familiar spin-only description. Crucially, compared to complexes with multidentate ligands that encapsulate the metal ion, we see only a very small degree of axial symmetry breaking. 1 displays field-induced slow magnetic relaxation, which is rare for monometallic Ni(ii) complexes due to efficient spin–lattice and quantum tunnelling relaxation pathways.
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Affiliation(s)
- Katie E R Marriott
- WestCHEM , School of Chemistry , University of Glasgow , Glasgow , G12 8QQ , UK .
| | - Lakshmi Bhaskaran
- Department of Physics and NHMFL , Florida State University , Tallahassee , FL 32310 , USA .
| | - Claire Wilson
- WestCHEM , School of Chemistry , University of Glasgow , Glasgow , G12 8QQ , UK .
| | - Marisa Medarde
- Laboratory for Developments and Methods , Paul Scherrer Institute , CH-5232 Villigen PSI , Switzerland
| | - Stefan T Ochsenbein
- Laboratory for Neutron Scattering and Imaging , Paul Scherrer Institute , CH-5232 Villigen PSI , Switzerland
| | - Stephen Hill
- Department of Physics and NHMFL , Florida State University , Tallahassee , FL 32310 , USA .
| | - Mark Murrie
- WestCHEM , School of Chemistry , University of Glasgow , Glasgow , G12 8QQ , UK .
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89
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Novikov VV, Pavlov AA, Nelyubina YV, Boulon ME, Varzatskii OA, Voloshin YZ, Winpenny RE. A Trigonal Prismatic Mononuclear Cobalt(II) Complex Showing Single-Molecule Magnet Behavior. J Am Chem Soc 2015. [DOI: 10.1021/jacs.5b05739] [Citation(s) in RCA: 240] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Valentin V. Novikov
- Nesmeyanov
Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow 119991, Russia
| | - Alexander A. Pavlov
- Nesmeyanov
Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow 119991, Russia
| | - Yulia V. Nelyubina
- Nesmeyanov
Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow 119991, Russia
| | - Marie-Emmanuelle Boulon
- School
of Chemistry and Photon Science Institute, The University of Manchester, Manchester M13 9PL, United Kingdom
| | - Oleg A. Varzatskii
- Vernadskii
Institute of General and Inorganic Chemistry, The National Academy of Sciences of Ukraine, Kyiv 03680, Ukraine
| | - Yan Z. Voloshin
- Nesmeyanov
Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow 119991, Russia
| | - Richard E.P. Winpenny
- School
of Chemistry and Photon Science Institute, The University of Manchester, Manchester M13 9PL, United Kingdom
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90
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Abstract
One of the determining factors in whether single-molecule magnets (SMMs) may be used as the smallest component of data storage, is the size of the barrier to reversal of the magnetisation, Ueff. This physical quantity depends on the magnitude of the magnetic anisotropy of a complex and the size of its spin ground state. In recent years, there has been a growing focus on maximising the anisotropy generated for a single 3d transition metal (TM) ion, by an appropriate ligand field, as a means of achieving higher barriers. Because the magnetic properties of these compounds arise from a single ion in a ligand field, they are often referred to as single-ion magnets (SIMs). Here, the synthetic chemist has a significant role to play, both in the design of ligands to enforce propitious splitting of the 3d orbitals and in the judicious choice of TM ion. Since the publication of the first 3d-based SIM, which was based on Fe(ii), many other contributions have been made to this field, using different first row TM ions, and exploring varied coordination environments for the paramagnetic ions.
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Affiliation(s)
- Gavin A Craig
- WestCHEM, School of Chemistry, University of Glasgow, Glasgow, G12 8QQ, UK.
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91
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First principles approach to the electronic structure, magnetic anisotropy and spin relaxation in mononuclear 3d-transition metal single molecule magnets. Coord Chem Rev 2015. [DOI: 10.1016/j.ccr.2014.10.015] [Citation(s) in RCA: 225] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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92
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Zhang YZ, Brown AJ, Meng YS, Sun HL, Gao S. Linear trinuclear cobalt(ii) single molecule magnet. Dalton Trans 2015; 44:2865-70. [DOI: 10.1039/c4dt03545c] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first linear trinuclear [CoII3] SMM was achieved due to significant intracluster ferromagnetic coupling. This study shows that miniscule changes in the coordination environment of the cobalt centers in this structural archetype can have a drastic effect on the observation of SMM behavior.
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Affiliation(s)
- Yuan-Zhu 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
- 100871 Beijing
| | - Andrew J. Brown
- Department of Chemistry
- Texas A & M University
- College Station
- USA
| | - Yin-Shan Meng
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Rare Earth Materials Chemistry and Applications
- College of Chemistry and Molecular Engineering
- Peking University
- 100871 Beijing
| | - Hao-Ling Sun
- Department of Chemistry
- Beijing Normal University
- Beijing 100875
- 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
- 100871 Beijing
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93
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Nemec I, Herchel R, Svoboda I, Boča R, Trávníček Z. Large and negative magnetic anisotropy in pentacoordinate mononuclear Ni(ii) Schiff base complexes. Dalton Trans 2015; 44:9551-60. [DOI: 10.1039/c5dt00600g] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pentacoordinate Ni(ii) complexes with pentadentate Schiff base ligands possess large and negative values of axial magnetic anisotropy. The relationship between the shape of the coordination polyhedron and uniaxial anisotropy is outlined.
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Affiliation(s)
- Ivan Nemec
- Regional Centre of Advanced Technologies and Materials
- Department of Inorganic Chemistry
- Faculty of Science
- Palacký University
- CZ-77146 Olomouc
| | - Radovan Herchel
- Regional Centre of Advanced Technologies and Materials
- Department of Inorganic Chemistry
- Faculty of Science
- Palacký University
- CZ-77146 Olomouc
| | - Ingrid Svoboda
- Materials Science
- Darmstadt University of Technology
- Darmstadt
- Germany
| | - Roman Boča
- Department of Chemistry
- FPV
- University of SS Cyril and Methodius
- 91701 Trnava
- Slovakia
| | - Zdeněk Trávníček
- Regional Centre of Advanced Technologies and Materials
- Department of Inorganic Chemistry
- Faculty of Science
- Palacký University
- CZ-77146 Olomouc
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94
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Yao PF, Li HY, Huang FP, Yu Q, Qin XH, Tang J, Tao Y, Bian HD. A series of multidimensional MOFs incorporating a new N-heterocyclic building block: 5,5′-di(pyridin-4-yl)-3,3′-bi(1,2,4-triazole). RSC Adv 2015. [DOI: 10.1039/c5ra06273j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
By using a new N-heterocyclic building block: 4,4′-H2dbpt, six novel coordination polymers with diversiform connectivity from one to three dimensional were constructed and characterized by X-ray crystallography successfully.
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Affiliation(s)
- Peng-Fei Yao
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China)
- School of Chemistry and Pharmacy
- Guangxi Normal University
- Guilin
- P. R. China
| | - Hai-Ye Li
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China)
- School of Chemistry and Pharmacy
- Guangxi Normal University
- Guilin
- P. R. China
| | - Fu-Ping Huang
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China)
- School of Chemistry and Pharmacy
- Guangxi Normal University
- Guilin
- P. R. China
| | - Qing Yu
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China)
- School of Chemistry and Pharmacy
- Guangxi Normal University
- Guilin
- P. R. China
| | - Xao-Huan Qin
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China)
- School of Chemistry and Pharmacy
- Guangxi Normal University
- Guilin
- P. R. China
| | - Jie Tang
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China)
- School of Chemistry and Pharmacy
- Guangxi Normal University
- Guilin
- P. R. China
| | - Ye Tao
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China)
- School of Chemistry and Pharmacy
- Guangxi Normal University
- Guilin
- P. R. China
| | - He-Dong Bian
- School of Chemistry and Chemical Engineering
- Guangxi University for Nationalities
- Key Laboratory of Chemistry and Engineering of Forest Products
- Nanning
- P. R. China
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95
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Abstract
This review highlights fundamental concepts and synthetic strategies of SMMs and selected examples of 3d, 4f, 5f and mixed 3d–4f, 4d–5d and 3d–5f based SMMs are discussed.
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Affiliation(s)
| | | | - Sanjit Konar
- Department of Chemistry
- IISER Bhopal
- Bhopal 462066
- India
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96
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Craig GA, Marbey JJ, Hill S, Roubeau O, Parsons S, Murrie M. Field-induced slow relaxation in a monometallic manganese(III) single-molecule magnet. Inorg Chem 2014; 54:13-5. [PMID: 25495825 DOI: 10.1021/ic5024136] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
High-field electron paramagnetic resonance spectroscopy shows that the structurally distorted Mn(III) ion in Na5[Mn(L-tart)2]·12H2O (1; L-tart = L-tartrate) has a significant negative axial zero-field splitting and a small rhombic anisotropy (∼1% of D). Alternating-current magnetic susceptibility measurements demonstrate that 1, which contains isolated Mn(III) centers, displays slow relaxation of its magnetization under an applied direct-current magnetic field.
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Affiliation(s)
- Gavin A Craig
- WestCHEM, School of Chemistry, University of Glasgow , Glasgow G12 8QQ, United Kingdom
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97
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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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98
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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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99
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Gorczyński A, Wałęsa-Chorab M, Kubicki M, Korabik M, Patroniak V. New complexes of 6,6″-dimethyl-2,2′:6′,2″-terpyridine with Ni(II) ions: Synthesis, structure and magnetic properties. Polyhedron 2014. [DOI: 10.1016/j.poly.2014.03.058] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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100
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López-Banet L, Santana MD, Piernas MJ, García G, Cerezo J, Requena A, Zúñiga J, Pérez J, García L. Structure and Spectroscopic Properties of Nickel Benzazolate Complexes with Hydrotris(pyrazolyl)borate Ligand. Inorg Chem 2014; 53:5502-14. [DOI: 10.1021/ic5001655] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Luisa López-Banet
- Departamento
de Química Inorgánica, Universidad de Murcia, E-30071 Murcia, Spain
| | - M. Dolores Santana
- Departamento
de Química Inorgánica, Universidad de Murcia, E-30071 Murcia, Spain
| | - María José Piernas
- Departamento
de Química Inorgánica, Universidad de Murcia, E-30071 Murcia, Spain
| | - Gabriel García
- Departamento
de Química Inorgánica, Universidad de Murcia, E-30071 Murcia, Spain
| | - Javier Cerezo
- Departamento de
Química Física, Universidad de Murcia, E-30071 Murcia, Spain
| | - Alberto Requena
- Departamento de
Química Física, Universidad de Murcia, E-30071 Murcia, Spain
| | - José Zúñiga
- Departamento de
Química Física, Universidad de Murcia, E-30071 Murcia, Spain
| | - José Pérez
- Departamento de Ingeniería
Minera, Geológica y Cartográfica, Área de Química
Inorgánica, Universidad Politécnica de Cartagena, E-30203 Cartagena, Spain
| | - Luís García
- Departamento de Ingeniería
Minera, Geológica y Cartográfica, Área de Química
Inorgánica, Universidad Politécnica de Cartagena, E-30203 Cartagena, Spain
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