1
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Nain S, Mukhopadhyaya A, Ali ME. Unravelling the Highest Magnetic Anisotropy Among all the nd-Shells in [WCp2]0 Metallocene. Inorg Chem 2024; 63:7401-7411. [PMID: 38578709 DOI: 10.1021/acs.inorgchem.4c00437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2024]
Abstract
Single-molecule magnets (SMMs) with a large magnetization reversal barrier are predominated by the lanthanide systems due to their strong spin-orbit coupling (SOC). However, the transition metals have also emerged as potential contenders and the largest magnetic anisotropy has been identified for a cobalt system among any d-series-based SMMs (Bunting et al. Science 2018, 362, eaat7319). In this work, we have explored the magnetic anisotropy in highly axial ligand field systems of metallocene, having different d-subshell (3d4, 4d4, and 5d4). The wave function-based multireference methods including static and dynamic electron correlations have been employed to investigate the zero-field splitting (ZFS) parameters. Here, we report exceptionally large magnetic anisotropy for a 5d complex of [WCp2]0 with the highest energy barrier that is nearly twice as high as the previous record value for the Co complex. We have also observed that the axial ZFS parameter (D) is increasing down the group in the order of 3d < 4d < 5d, pertaining to a large SOC.
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Affiliation(s)
- Sakshi Nain
- Institute of Nano Science and Technology, Sector-81, Mohali, Punjab 140306, India
| | - Aritra Mukhopadhyaya
- Institute of Nano Science and Technology, Sector-81, Mohali, Punjab 140306, India
| | - Md Ehesan Ali
- Institute of Nano Science and Technology, Sector-81, Mohali, Punjab 140306, India
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2
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Khurana R, Ali ME. Single-Molecule Magnetism in Linear Fe(I) Complexes with Aufbau and Non-Aufbau Ground States. Inorg Chem 2022; 61:15335-15345. [PMID: 36129329 DOI: 10.1021/acs.inorgchem.2c00981] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
With the ongoing efforts on synthesizing mononuclear single-ion magnets (SIMs) with promising applications in high-density data storage and spintronics devices, the linear or quasi-linear Fe(I) complexes emerge as the enticing candidates possessing large unquenched angular momentum. Herein, we have studied five experimentally synthesized linear Fe(I) complexes to uncover the origin of single-molecule magnetic behavior of these complexes. To begin with, we benchmarked the methodology on the experimentally and theoretically well-studied complex [Fe(C(SiMe3)3)2]-1 (1) (SiMe3 = trimethylsilyl), which is characterized with a large spin-reversal barrier of 226 cm-1. Subsequently, the spin-phonon coupling coefficients are calculated for the low-frequency vibrational modes to understand the relaxation mechanism of the complex. Furthermore, the two Fe(I) complexes, that is, [Fe(cyIDep)2]+1 (2) (cyIDep = 1,3-bis(2',6'-diethylphenyl)-4,5-(CH2)4-imidazole-2-ylidene) and [Fe(sIDep)2]+1 (3) (sIDep = 1,3-bis(2',6'-diethylphenyl)-imidazolin-2-ylidene), are studied that are experimentally reported with no SIM behavior under ac or dc magnetic fields; however, they exhibit large opposite axial zero field splitting (-62.4 and +34.0 cm-1, respectively) from ab initio calculations. We have unwrapped the origin of this contrasting observation between experiment and theory by probing their magnetic relaxation pathways and the pattern of d orbital splitting. Additionally, the two experimentally synthesized Fe(I) complexes, that is, [(η6-C6H6)FeAr*-3,5-Pr2i] (4) (Ar*-3,5-Pr2i = C6H-2,6-(C6H2-2,4,6-Pr3i)2-3,5-Pr2i) and [(CAAC)2Fe]+1 (5) (CAAC = cyclic (alkyl) (amino)carbene), are investigated for SIM behavior, since there is no report on their magnetic anisotropy. To this end, complex 4 presents itself as the possible candidate for SIM.
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Affiliation(s)
- Rishu Khurana
- Institute of Nano Science and Technology, Sector-81, Mohali, Punjab 140306, India
| | - Md Ehesan Ali
- Institute of Nano Science and Technology, Sector-81, Mohali, Punjab 140306, India
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3
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Vishnoi P, Zuo JL, Cooley JA, Kautzsch L, Gómez‐Torres A, Murillo J, Fortier S, Wilson SD, Seshadri R, Cheetham AK. Chemical Control of Spin‐Orbit Coupling and Charge Transfer in Vacancy‐Ordered Ruthenium(IV) Halide Perovskites. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202013383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Pratap Vishnoi
- Materials Department and Materials Research Laboratory University of California Santa Barbara CA 93106 USA
| | - Julia L. Zuo
- Materials Department and Materials Research Laboratory University of California Santa Barbara CA 93106 USA
| | - Joya A. Cooley
- Department of Chemistry and Biochemistry California State University Fullerton CA 92831 USA
| | - Linus Kautzsch
- Materials Department and Materials Research Laboratory University of California Santa Barbara CA 93106 USA
| | | | - Jesse Murillo
- Department of Chemistry University of Texas at El Paso El Paso TX 79968 USA
| | - Skye Fortier
- Department of Chemistry University of Texas at El Paso El Paso TX 79968 USA
| | - Stephen D. Wilson
- Materials Department and Materials Research Laboratory University of California Santa Barbara CA 93106 USA
| | - Ram Seshadri
- Materials Department and Materials Research Laboratory University of California Santa Barbara CA 93106 USA
| | - Anthony K. Cheetham
- Materials Department and Materials Research Laboratory University of California Santa Barbara CA 93106 USA
- Department of Materials Science & Engineering National University of Singapore 117576 Singapore Singapore
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4
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Świtlicka A, Machura B, Cano J, Lloret F, Julve M. A Study of the Lack of Slow Magnetic Relaxation in Mononuclear Trigonal Bipyramidal Cobalt(II) Complexes. ChemistrySelect 2021. [DOI: 10.1002/slct.202100061] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Anna Świtlicka
- Department Of Crystallography, Institute of Chemistry University of Silesia 9th Szkolna St., 40–006 Katowice Poland
| | - Barbara Machura
- Department Of Crystallography, Institute of Chemistry University of Silesia 9th Szkolna St., 40–006 Katowice Poland
| | - Joan Cano
- Department of Química Inorgànica/Instituto de Ciencia Molecular (ICMol) Facultat de Quimica de la Universitat de València C/ Catedrático Jose Beltrán 2 46980 Paterna, València Spain
| | - Francesc Lloret
- Department of Química Inorgànica/Instituto de Ciencia Molecular (ICMol) Facultat de Quimica de la Universitat de València C/ Catedrático Jose Beltrán 2 46980 Paterna, València Spain
| | - Miguel Julve
- Department of Química Inorgànica/Instituto de Ciencia Molecular (ICMol) Facultat de Quimica de la Universitat de València C/ Catedrático Jose Beltrán 2 46980 Paterna, València Spain
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5
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Vishnoi P, Zuo JL, Cooley JA, Kautzsch L, Gómez-Torres A, Murillo J, Fortier S, Wilson SD, Seshadri R, Cheetham AK. Chemical Control of Spin-Orbit Coupling and Charge Transfer in Vacancy-Ordered Ruthenium(IV) Halide Perovskites. Angew Chem Int Ed Engl 2021; 60:5184-5188. [PMID: 33247485 DOI: 10.1002/anie.202013383] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Indexed: 11/07/2022]
Abstract
Vacancy-ordered double perovskites are attracting significant attention due to their chemical diversity and interesting optoelectronic properties. With a view to understanding both the optical and magnetic properties of these compounds, two series of RuIV halides are presented; A2 RuCl6 and A2 RuBr6 , where A is K, NH4 , Rb or Cs. We show that the optical properties and spin-orbit coupling (SOC) behavior can be tuned through changing the A cation and the halide. Within a series, the energy of the ligand-to-metal charge transfer increases as the unit cell expands with the larger A cation, and the band gaps are higher for the respective chlorides than for the bromides. The magnetic moments of the systems are temperature dependent due to a non-magnetic ground state with Jeff =0 caused by SOC. Ru-X covalency, and consequently, the delocalization of metal d-electrons, result in systematic trends of the SOC constants due to variations in the A cation and the halide anion.
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Affiliation(s)
- Pratap Vishnoi
- Materials Department and Materials Research Laboratory, University of California, Santa Barbara, CA, 93106, USA
| | - Julia L Zuo
- Materials Department and Materials Research Laboratory, University of California, Santa Barbara, CA, 93106, USA
| | - Joya A Cooley
- Department of Chemistry and Biochemistry, California State University, Fullerton, CA, 92831, USA
| | - Linus Kautzsch
- Materials Department and Materials Research Laboratory, University of California, Santa Barbara, CA, 93106, USA
| | | | - Jesse Murillo
- Department of Chemistry, University of Texas at El Paso, El Paso, TX, 79968, USA
| | - Skye Fortier
- Department of Chemistry, University of Texas at El Paso, El Paso, TX, 79968, USA
| | - Stephen D Wilson
- Materials Department and Materials Research Laboratory, University of California, Santa Barbara, CA, 93106, USA
| | - Ram Seshadri
- Materials Department and Materials Research Laboratory, University of California, Santa Barbara, CA, 93106, USA
| | - Anthony K Cheetham
- Materials Department and Materials Research Laboratory, University of California, Santa Barbara, CA, 93106, USA.,Department of Materials Science & Engineering, National University of Singapore, 117576, Singapore, Singapore
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6
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Piccinelli F, Bettinelli M, Cano J, Lloret F, Julve M, Dolmella A. Magnetic Properties of a New Hexahalorhenate(IV) Compound and Structural Comparison with Its Hexahaloplatinate(IV) Analog. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000199] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Fabio Piccinelli
- Luminescent Materials Laboratory, DB Università di Verona, and INSTM, UdR Verona Strada Le Grazie 15 37134 Verona Italy
| | - Marco Bettinelli
- Luminescent Materials Laboratory, DB Università di Verona, and INSTM, UdR Verona Strada Le Grazie 15 37134 Verona Italy
| | - Joan Cano
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica Universitat de València C/ Catedrátco José Beltrán 2 46980 Paterna València Spain
| | - Francesc Lloret
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica Universitat de València C/ Catedrátco José Beltrán 2 46980 Paterna València Spain
| | - Miguel Julve
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica Universitat de València C/ Catedrátco José Beltrán 2 46980 Paterna València Spain
| | - Alessandro Dolmella
- Department of Pharmaceutical and Pharmacological Sciences University of Padova via F. Marzolo 5 35131 Padova Italy
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7
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Liu J, Pedersen KS, Greer SM, Oyarzabal I, Mondal A, Hill S, Wilhelm F, Rogalev A, Tressaud A, Durand E, Long JR, Clérac R. Access to Heteroleptic Fluorido‐Cyanido Complexes with a Large Magnetic Anisotropy by Fluoride Abstraction. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914934] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jun‐Liang Liu
- Univ. Bordeaux CNRS Centre de Recherche Paul Pascal CRPP UMR 5031 33600 Pessac France
- Current address: Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education School of Chemistry Sun Yat-Sen University Guangzhou 510275 P. R. China
| | - Kasper S. Pedersen
- Univ. Bordeaux CNRS Centre de Recherche Paul Pascal CRPP UMR 5031 33600 Pessac France
- Current address: Department of Chemistry Technical University of Denmark 2800, Kgs. Lyngby Denmark
| | - Samuel M. Greer
- Department of Chemistry Florida State University
- National High Magnetic Field Laboratory Florida State University Tallahassee FL 32306 USA
| | - Itziar Oyarzabal
- Univ. Bordeaux CNRS Centre de Recherche Paul Pascal CRPP UMR 5031 33600 Pessac France
- Chemistry Faculty University of the Basque Country UPV/EHU 20018 Donostia-San Sebastián Spain
| | - Abhishake Mondal
- Univ. Bordeaux CNRS Centre de Recherche Paul Pascal CRPP UMR 5031 33600 Pessac France
- Current address: Solid State and Structural Chemistry Unit Indian Institute of Science C.V. Raman Road Bangalore 560012 India
| | - Stephen Hill
- Department of Physics Florida State University
- National High Magnetic Field Laboratory Florida State University Tallahassee FL 32306 USA
| | | | - Andrei Rogalev
- ESRF-The European Synchrotron 38043 Grenoble Cedex 9 France
| | | | | | - Jeffrey R. Long
- Department of Chemistry University of California Berkeley USA
- Department of Chemical and Biomolecular Engineering University of California Berkeley USA
- Materials Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| | - Rodolphe Clérac
- Univ. Bordeaux CNRS Centre de Recherche Paul Pascal CRPP UMR 5031 33600 Pessac France
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8
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Liu JL, Pedersen KS, Greer SM, Oyarzabal I, Mondal A, Hill S, Wilhelm F, Rogalev A, Tressaud A, Durand E, Long JR, Clérac R. Access to Heteroleptic Fluorido-Cyanido Complexes with a Large Magnetic Anisotropy by Fluoride Abstraction. Angew Chem Int Ed Engl 2020; 59:10306-10310. [PMID: 32080955 DOI: 10.1002/anie.201914934] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Indexed: 11/07/2022]
Abstract
Silicon-mediated fluoride abstraction is demonstrated as a means of generating the first fluorido-cyanido transition metal complexes. This new synthetic approach is exemplified by the synthesis and characterization of the heteroleptic complexes, trans-[MIV F4 (CN)2 ]2- (M=Re, Os), obtained from their homoleptic [MIV F6 ]2- parents. As shown by combined high-field electron paramagnetic resonance spectroscopy and magnetization measurements, the partial substitution of fluoride by cyanide ligands leads to a marked increase in the magnetic anisotropy of trans-[ReF4 (CN)2 ]2- as compared to [ReF6 ]2- , reflecting the severe departure from an ideal octahedral (Oh point group) ligand field. This methodology paves the way toward the realization of new heteroleptic transition metal complexes that may be used as highly anisotropic building-blocks for the design of high-performance molecule-based magnetic materials.
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Affiliation(s)
- Jun-Liang Liu
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, CRPP, UMR 5031, 33600, Pessac, France.,Current address: Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, P. R. China
| | - Kasper S Pedersen
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, CRPP, UMR 5031, 33600, Pessac, France.,Current address: Department of Chemistry, Technical University of Denmark, 2800, Kgs., Lyngby, Denmark
| | - Samuel M Greer
- Department of Chemistry, Florida State University.,National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL, 32306, USA
| | - Itziar Oyarzabal
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, CRPP, UMR 5031, 33600, Pessac, France.,Chemistry Faculty, University of the Basque Country UPV/EHU, 20018, Donostia-San Sebastián, Spain
| | - Abhishake Mondal
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, CRPP, UMR 5031, 33600, Pessac, France.,Current address: Solid State and Structural Chemistry Unit, Indian Institute of Science, C.V. Raman Road, Bangalore, 560012, India
| | - Stephen Hill
- Department of Physics, Florida State University.,National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL, 32306, USA
| | - Fabrice Wilhelm
- ESRF-The European Synchrotron, 38043, Grenoble Cedex 9, France
| | - Andrei Rogalev
- ESRF-The European Synchrotron, 38043, Grenoble Cedex 9, France
| | - Alain Tressaud
- CNRS, ICMCB, UPR 9048, Univ. Bordeaux, 33608, Pessac, France
| | - Etienne Durand
- CNRS, ICMCB, UPR 9048, Univ. Bordeaux, 33608, Pessac, France
| | - Jeffrey R Long
- Department of Chemistry, University of California Berkeley, USA.,Department of Chemical and Biomolecular Engineering, University of California Berkeley, USA.,Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Rodolphe Clérac
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, CRPP, UMR 5031, 33600, Pessac, France
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9
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Cui H, Lv W, Tong W, Chen X, Xue Z. Slow Magnetic Relaxation in a Mononuclear Five‐Coordinate Cu(II) Complex. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900942] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Hui‐Hui Cui
- State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering Nanjing University 210023 Nanjing China
| | - Wei Lv
- State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering Nanjing University 210023 Nanjing China
| | - Wei Tong
- Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions High Magnetic Field Laboratory of the Chinese Academy of Science Hefei 230031 Anhui China
| | - Xue‐Tai Chen
- State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering Nanjing University 210023 Nanjing China
| | - Zi‐Ling Xue
- Department of Chemistry University of Tennessee 37996 Knoxville Tennessee USA
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10
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Zorina LV, Simonov SV, Sasnovskaya VD, Talantsev AD, Morgunov RB, Mironov VS, Yagubskii EB. Slow Magnetic Relaxation, Antiferromagnetic Ordering, and Metamagnetism in Mn II (H 2 dapsc)-Fe III (CN) 6 Chain Complex with Highly Anisotropic Fe-CN-Mn Spin Coupling. Chemistry 2019; 25:14583-14597. [PMID: 31361924 DOI: 10.1002/chem.201902551] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 07/29/2019] [Indexed: 11/07/2022]
Abstract
Reactions of [Mn(H2 dapsc)Cl2 ]⋅H2 O (dapsc=2,6- diacetylpyridine bis(semicarbazone)) with K3 [Fe(CN)6 ] and (PPh4 )3 [Fe(CN)6 ] lead to the formation of the chain polymeric complex {[Mn(H2 dapsc)][Fe(CN)6 ][K(H2 O)3.5 ]}n ⋅1.5n H2 O (1) and the discrete pentanuclear complex {[Mn(H2 dapsc)]3 [Fe(CN)6 ]2 (H2 O)2 }⋅4 CH3 OH⋅3.4 H2 O (2), respectively. In the crystal structure of 1 the high-spin [MnII (H2 dapsc)]2+ cations and low-spin hexacyanoferrate(III) anions are assembled into alternating heterometallic cyano-bridged chains. The K+ ions are located between the chains and are coordinated by oxygen atoms of the H2 dapsc ligand and water molecules. The magnetic structure of 1 is built from ferrimagnetic chains, which are antiferromagnetically coupled. The complex exhibits metamagnetism and frequency-dependent ac magnetic susceptibility, indicating single-chain magnetic behavior with a Mydosh-parameter φ=0.12 and an effective energy barrier (Ueff /kB ) of 36.0 K with τ0 =2.34×10-11 s for the spin relaxation. Detailed theoretical analysis showed highly anisotropic intra-chain spin coupling between [FeIII (CN)6 ]3- and [MnII (H2 dapsc)]2+ units resulting from orbital degeneracy and unquenched orbital momentum of [FeIII (CN)6 ]3- complexes. The origin of the metamagnetic transition is discussed in terms of strong magnetic anisotropy and weak AF interchain spin coupling.
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Affiliation(s)
- Leokadiya V Zorina
- Institute of Solid State Physics, Russian Academy of Sciences, Academician Ossipyan Str. 2, Chernogolovka MD, Russia
| | - Sergey V Simonov
- Institute of Solid State Physics, Russian Academy of Sciences, Academician Ossipyan Str. 2, Chernogolovka MD, Russia
| | - Valentina D Sasnovskaya
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Semenov's av. 1, Chernogolovka, MD, Russia
| | - Artem D Talantsev
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Semenov's av. 1, Chernogolovka, MD, Russia
| | - Roman B Morgunov
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Semenov's av. 1, Chernogolovka, MD, Russia
| | - Vladimir S Mironov
- Shubnikov Institute of Crystallography of Federal Scientific Research, Centre "Crystallography and Photonics", Russian Academy of Sciences, Leninskii av. 59, Moscow, Russia
| | - Eduard B Yagubskii
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Semenov's av. 1, Chernogolovka, MD, Russia
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11
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Darawsheh M, Barrios LA, Roubeau O, Teat SJ, Aromí G. Encapsulation of a Cr III Single-Ion Magnet within an Fe II Spin-Crossover Supramolecular Host. Angew Chem Int Ed Engl 2018; 57:13509-13513. [PMID: 30161280 DOI: 10.1002/anie.201807256] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2018] [Indexed: 01/10/2023]
Abstract
Single functional molecules are regarded as future components of nanoscale spintronic devices. Supramolecular coordination chemistry provides unlimited resources to implement multiple functions to individual molecules. A novel coordination [Fe2 ] helicate exhibiting spin-crossover is demonstrated to be ideally suited to encapsulate a [Cr(ox)3 ]3- complex anion (ox=oxalate), unveiling for the first-time single ion slow relaxation of the magnetization for this metal. A possibility of tuning the dynamics of this relaxation as well as the performance of the CrIII center as qubit arises from the observation that metastable high spin FeII centers from the host can be generated by irradiation with green light at low temperature.
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Affiliation(s)
- Mohanad Darawsheh
- Departament de Química Inorgánica i Orgánica, Universitat de Barcelona, Diagonal 645, 08038, Barcelona, Spain
| | - Leoní A Barrios
- Departament de Química Inorgánica i Orgánica, Universitat de Barcelona, Diagonal 645, 08038, Barcelona, Spain.,Institute of Nanoscience and Nanotechnology (IN2UB), Universitat de Barcelona, Spain
| | - Olivier Roubeau
- Instituto de Ciencia de Materiales de Aragón (ICMA), CSIC and Universidad de Zaragoza, Plaza San Francisco s/n, 50009, Zaragoza, Spain
| | - Simon J Teat
- Advanced Light Source, Berkeley Laboratory, Cyclotron Road, Berkeley, CA, 94720, USA
| | - Guillem Aromí
- Departament de Química Inorgánica i Orgánica, Universitat de Barcelona, Diagonal 645, 08038, Barcelona, Spain.,Institute of Nanoscience and Nanotechnology (IN2UB), Universitat de Barcelona, Spain
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12
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Darawsheh M, Barrios LA, Roubeau O, Teat SJ, Aromí G. Encapsulation of a Cr
III
Single‐Ion Magnet within an Fe
II
Spin‐Crossover Supramolecular Host. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201807256] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Mohanad Darawsheh
- Departament de Química Inorgánica i Orgánica Universitat de Barcelona Diagonal 645 08038 Barcelona Spain
| | - Leoní A. Barrios
- Departament de Química Inorgánica i Orgánica Universitat de Barcelona Diagonal 645 08038 Barcelona Spain
- Institute of Nanoscience and Nanotechnology (IN2UB) Universitat de Barcelona Spain
| | - Olivier Roubeau
- Instituto de Ciencia de Materiales de Aragón (ICMA) CSIC and Universidad de Zaragoza Plaza San Francisco s/n 50009 Zaragoza Spain
| | - Simon J. Teat
- Advanced Light Source Berkeley Laboratory Cyclotron Road Berkeley CA 94720 USA
| | - Guillem Aromí
- Departament de Química Inorgánica i Orgánica Universitat de Barcelona Diagonal 645 08038 Barcelona Spain
- Institute of Nanoscience and Nanotechnology (IN2UB) Universitat de Barcelona Spain
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13
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Haase PAB, Repisky M, Komorovsky S, Bendix J, Sauer SPA. Relativistic DFT Calculations of Hyperfine Coupling Constants in 5d Hexafluorido Complexes: [ReF 6 ] 2- and [IrF 6 ] 2. Chemistry 2018; 24:5124-5133. [PMID: 29027277 PMCID: PMC5969236 DOI: 10.1002/chem.201704653] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2017] [Indexed: 11/08/2022]
Abstract
The performance of relativistic density functional theory (DFT) methods has been investigated for the calculation of the recently measured hyperfine coupling constants of hexafluorido complexes [ReF6 ]2- and [IrF6 ]2- . Three relativistic methods were employed at the DFT level of theory: the 2-component zeroth-order regular approximation (ZORA) method, in which the spin-orbit coupling was treated either variationally (EV ZORA) or as a perturbation (LR ZORA), and the 4-component Dirac-Kohn-Sham (DKS) method. The dependence of the results on the basis set and the choice of exchange-correlation functional was studied. Furthermore, the effect of varying the amount of Hartree-Fock exchange in the hybrid functionals was investigated. The LR ZORA and DKS methods combined with DFT led to very similar deviations (about 20 %) from the experimental values for the coupling constant of complex [ReF6 ]2- by using hybrid functionals. However, none of the methods were able to reproduce the large anisotropy of the hyperfine coupling tensor of complex [ReF6 ]2- . For [IrF6 ]2- , the EV ZORA and DKS methods reproduced the experimental tensor components with deviations of ≈10 and ≈5 % for the hybrid functionals, whereas the LR ZORA method predicted the coupling constant to be around one order of magnitude too large owing to the combination of large spin-orbit coupling and very low excitation energies.
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Affiliation(s)
- Pi A B Haase
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100, Copenhagen Ø, Denmark
- Van Swinderen Institute, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Michal Repisky
- CTCC, Department of Chemistry, University of Tromsø, N-9037, Tromsø, Norway
| | - Stanislav Komorovsky
- Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dubravska Cesta 9, SK-84536, Bratislava, Slovakia
| | - Jesper Bendix
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100, Copenhagen Ø, Denmark
| | - Stephan P A Sauer
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100, Copenhagen Ø, Denmark
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Feng M, Tong ML. Single Ion Magnets from 3d to 5f: Developments and Strategies. Chemistry 2018; 24:7574-7594. [PMID: 29385282 DOI: 10.1002/chem.201705761] [Citation(s) in RCA: 230] [Impact Index Per Article: 38.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Indexed: 12/21/2022]
Abstract
Single-ion magnets (SIMs), exhibiting slow magnetization relaxation in the absence of the magnetic field, originate from their single spin-carrier centre. In pursuit of high-performance magnetic properties, such as high spin-reversal barrier and high blocking temperature, various metal centres were investigated to establish SIMs, including 3d and 5d transition metal ions, 4f lanthanide ions, and 5f actinide ions, which possess unique zero-field splitting and magnetic properties. Therefore, proper ligand field is of great importance to different types of metals. In the given great breakthroughs since the first SIM, [Pc2 Tb]- (Pc=dianion of phthalocyanine), was reported, strategies of ligand field design have emerged. In this review, the developments of SIMs with different metal centres are summarized, as well as the possible strategies.
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Affiliation(s)
- Min Feng
- Key Laboratory of Bioinorganic and Synthetic Chemistry, of Ministry of Education, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, P. R. China
| | - Ming-Liang Tong
- Key Laboratory of Bioinorganic and Synthetic Chemistry, of Ministry of Education, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, P. R. China
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Rational Self‐Assembly of Tricobalt Extended Metal Atom Chains and [MF
6
]
2–
Building Blocks into One‐Dimensional Coordination Polymers. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201701084] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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16
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[OsF6
]
x
−
: Molecular Models for Spin-Orbit Entangled Phenomena. Chemistry 2017; 23:11244-11248. [DOI: 10.1002/chem.201702894] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Indexed: 11/07/2022]
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17
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Synthesis, Structures and Properties of Cobalt Thiocyanate Coordination Compounds with 4-(hydroxymethyl)pyridine as Co-ligand. CRYSTALS 2016. [DOI: 10.3390/cryst6040038] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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18
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Brazzolotto D, Gennari M, Yu S, Pécaut J, Rouzières M, Clérac R, Orio M, Duboc C. An Experimental and Theoretical Investigation on Pentacoordinated Cobalt(III) Complexes with an Intermediate S=
1 Spin State: How Halide Ligands Affect their Magnetic Anisotropy. Chemistry 2015; 22:925-33. [DOI: 10.1002/chem.201502997] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Indexed: 11/06/2022]
Affiliation(s)
| | | | - Shengying Yu
- Univ. Grenoble Alpes, DCM, CNRS UMR 5250; 38000 Grenoble France
| | - Jacques Pécaut
- Univ. Grenoble Alpes, CEA, INAC-SCIB; 38000 Grenoble France
| | - Mathieu Rouzières
- CNRS, CRPP, UPR 8641; F-33600 Pessac France
- Univ. Bordeaux, CRPP, UPR 8641; F-33600 Pessac France
| | - Rodolphe Clérac
- CNRS, CRPP, UPR 8641; F-33600 Pessac France
- Univ. Bordeaux, CRPP, UPR 8641; F-33600 Pessac France
| | - Maylis Orio
- Aix Marseille Université, ISM2, CNRS UMR 7313; 13397 Marseille France
| | - Carole Duboc
- Univ. Grenoble Alpes, DCM, CNRS UMR 5250; 38000 Grenoble France
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19
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Wang KY, Bassil BS, Lin Z, Römer I, Vanhaecht S, Parac-Vogt TN, Sáenz de Pipaón C, Galán-Mascarós JR, Fan L, Cao J, Kortz U. Ln12 -Containing 60-Tungstogermanates: Synthesis, Structure, Luminescence, and Magnetic Studies. Chemistry 2015; 21:18168-76. [PMID: 26541771 DOI: 10.1002/chem.201502457] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Indexed: 11/09/2022]
Abstract
A new class of hexameric Ln12 -containing 60-tungstogermanates, [Na(H2 O)6 ⊂Eu12 (OH)12 (H2 O)18 Ge2 (GeW10 O38 )6 ](39-) (Eu12 ), [Na(H2 O)6 ⊂Gd12 (OH)6 (H2 O)24 Ge(GeW10 O38 )6 ](37-) (Gd12 ), and [(H2 O)6 ⊂Dy12 (H2 O)24 (GeW10 O38 )6 ](36-) (Dy12 ), comprising six di-Ln-embedded {β(4,11)-GeW10 } subunits was prepared by reaction of [α-GeW9 O34 ](10-) with Ln(III) ions in weakly acidic (pH 5) aqueous medium. Depending on the size of the Ln(III) ion, the assemblies feature selective capture of two (for Eu12 ), one (for Gd12 ), or zero (for Dy12 ) extra Ge(IV) ions. The selective encapsulation of a cationic sodium hexaaqua complex [Na(H2 O)6 ](+) was observed for Eu12 and Gd12 , whereas Dy12 incorporates a neutral, distorted-octahedral (H2 O)6 cluster. The three compounds were characterized by single-crystal XRD, ESI-MS, photoluminescence, and magnetic studies. Dy12 was shown to be a single-molecule magnet.
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Affiliation(s)
- Kai-Yao Wang
- Jacobs University, Department of Life Sciences and Chemistry, P.O. Box 750 561, 28725 Bremen (Germany) http://www.jacobs-university.de/ses/ukortz
| | - Bassem S Bassil
- Jacobs University, Department of Life Sciences and Chemistry, P.O. Box 750 561, 28725 Bremen (Germany) http://www.jacobs-university.de/ses/ukortz.,Department of Chemistry, Faculty of Sciences, University of Balamand, P.O. Box 100, Tripoli (Lebanon)
| | - Zhengguo Lin
- Jacobs University, Department of Life Sciences and Chemistry, P.O. Box 750 561, 28725 Bremen (Germany) http://www.jacobs-university.de/ses/ukortz
| | - Isabella Römer
- Jacobs University, Department of Life Sciences and Chemistry, P.O. Box 750 561, 28725 Bremen (Germany) http://www.jacobs-university.de/ses/ukortz
| | - Stef Vanhaecht
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven (Belgium)
| | | | - Cristina Sáenz de Pipaón
- Institute of Chemical Research of Catalonia (ICIQ), Av. Paisos Catalans 16, 43007 Tarragona (Spain)
| | - José Ramón Galán-Mascarós
- Institute of Chemical Research of Catalonia (ICIQ), Av. Paisos Catalans 16, 43007 Tarragona (Spain).,Catalan Institution for Research and Advanced Studies (ICREA), Passeig Lluis Companys, 23, 08010, Barcelona (Spain)
| | - Linyuan Fan
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic, Conversion Materials, School of Chemistry, Beijing Institute of Technology, Beijing 100081 (P.R. China)
| | - Jie Cao
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic, Conversion Materials, School of Chemistry, Beijing Institute of Technology, Beijing 100081 (P.R. China)
| | - Ulrich Kortz
- Jacobs University, Department of Life Sciences and Chemistry, P.O. Box 750 561, 28725 Bremen (Germany) http://www.jacobs-university.de/ses/ukortz.
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