1
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Jabeur W, Korb M, Hamdi M, Holub M, Princík D, Zeleňák V, Sanchez-Coronilla A, Shalash M, Čižmár E, Naïli H. Structural, optical and magnetic properties of a new metal-organic Co II-based complex. RSC Adv 2024; 14:25048-25061. [PMID: 39135970 PMCID: PMC11317920 DOI: 10.1039/d4ra02149e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Accepted: 06/03/2024] [Indexed: 08/15/2024] Open
Abstract
A mononuclear cobalt(ii) complex [C5H8N3]2[CoCl4(C5H7N3)2] (I) was synthesized and structurally characterized. Single crystal X-ray diffraction analysis indicates that monometallic Co(ii) ions acted as coordination nodes in a distorted octahedral geometry, giving rise to a supramolecular architecture. The latter is made up of a ½ unit form composed of an anionic element [Co0.5Cl2(C5H7N3)]- and one 2-amino-4-methylpyrimidinium cation [C5H8N3]+. The crystalline arrangement of this compound adopts the sandwich form where inorganic parts are sandwiched between the organic sheets following the [100] direction. More information regarding the structure hierarchy has been supplied based on Hirshfeld surface analysis; the X⋯H (X = N, Cl) interactions play a crucial role in stabilizing the self-assembly process of I, complemented by the intervention of π⋯π electrostatic interaction created between organic entities. Thermal analyses were carried out to study the thermal behavior process. Static magnetic measurements and ab initio calculations of compound I revealed the easy-axis anisotropy character of the central Co(ii) ion. Two-channel field-induced slow-magnetic relaxation was observed; the high-frequency channel is characterized by underbarrier relaxation with U eff = 16.5 cm-1, and the low-frequency channel involves a direct relaxation process affected by the phonon-bottleneck effect.
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Affiliation(s)
- Wiem Jabeur
- Laboratory Physico Chemistry of the Solid State, Department of Chemistry, Faculty of Sciences of Sfax, Sfax University POBOX 1171 3000 Sfax Tunisia
| | - Marcus Korb
- The University of Western Australia, School of Molecular Sciences 35 Stirling Highway, Crawley Perth Western Australia 6009 Australia
| | - Mohamed Hamdi
- Department of Chemistry, College of Sciences and Arts Turaif, Northern Border University Arar Saudi Arabia
| | - Mariia Holub
- Institute of Physics, Faculty of Science, P. J. Šafárik University in Košice SK-041 54 Košice Slovakia
| | - Dávid Princík
- Department of Inorganic Chemistry, Faculty of Science, P. J. Šafárik University Košice SK-041 54 Slovakia
| | - Vladimír Zeleňák
- Department of Inorganic Chemistry, Faculty of Science, P. J. Šafárik University Košice SK-041 54 Slovakia
| | | | - Marwan Shalash
- Department of Chemistry, College of Sciences and Arts Turaif, Northern Border University Arar Saudi Arabia
| | - Erik Čižmár
- Institute of Physics, Faculty of Science, P. J. Šafárik University in Košice SK-041 54 Košice Slovakia
| | - Houcine Naïli
- Laboratory Physico Chemistry of the Solid State, Department of Chemistry, Faculty of Sciences of Sfax, Sfax University POBOX 1171 3000 Sfax Tunisia
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2
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Theoretical analysis of crystal field parameters and zero field splitting parameters for Mn2+ ions in tetramethylammonium tetrachlorozincate (TMATC-Zn). Polyhedron 2023. [DOI: 10.1016/j.poly.2023.116341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2023]
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3
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Wang Y, Li X. Unravelling the robustness of magnetic anisotropy of a nickelocene molecule in different environments: a first-principles-based study. Phys Chem Chem Phys 2022; 24:21122-21130. [PMID: 36039704 DOI: 10.1039/d2cp02793c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Recent scanning tunneling spectroscopy with single metallocene molecule-functionalized tips have proved to be a powerful tool to probe and control individual spins and spin-spin exchange interactions due to the robustness of the magnetic properties of the metallocene molecule in different surroundings. However, accurate prediction of such robustness at a first-principles-based level by the conventional density functional theory (DFT) has remained challenging. In this paper, we have performed a detailed investigation of the evolution of electronic and magnetic properties of a nickelocene molecule (NiCp2) in different environments, i.e., free-standing, adsorbed on Cu(100) and as a functionalized tip apex. Using an embedding method, which combines DFT and the complete active space self-consistent field (CASSCF) method recently developed, we demonstrate that the nickelocene molecule almost preserves its spin and magnetic anisotropy upon adsorption on Cu(100), and also in the position of the tip apex. In particular, the cyclic π* orbital of the Cp rings could hybridize with the singly occupied dπ orbitals of the Ni center of the molecule, protecting these orbitals from external states. Hence the molecular spin maintains S = 1, the same as in the free-standing case, and its magnetic anisotropy is also robust with energies of 3.56, 3.34, and 3.51 meV in free-standing, adsorbed on Cu(100), and functionalized tip apex states, respectively, in good agreement with previous theoretical and experimental results. This work thus provides a first-principles-based understanding of the relevant experiments. Such agreement between theoretical simulations and experimental measurements highlights the potential usefulness of the method for investigating the local electronic and spin states of organometallic molecule-surface composite systems.
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Affiliation(s)
- Yu Wang
- Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China.
| | - Xiaoguang Li
- Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China.
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4
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Sawicka N, Craze CJ, Horton PN, Coles SJ, Richards E, Pope SJA. Long-lived, near-IR emission from Cr(III) under ambient conditions. Chem Commun (Camb) 2022; 58:5733-5736. [PMID: 35438119 DOI: 10.1039/d2cc01434c] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Bis-terdentate (N^N^N) ligands coordinated to Cr(III) yield complexes that display near-IR emission under aerated solvent conditions at room temperature.
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Affiliation(s)
- Natalia Sawicka
- School of Chemistry, Main Building, Cardiff University, Cardiff CF10 3AT, Cymru/Wales, UK.
| | - Chloe J Craze
- School of Chemistry, Main Building, Cardiff University, Cardiff CF10 3AT, Cymru/Wales, UK.
| | - Peter N Horton
- UK National Crystallographic Service, Chemistry, Faculty of Natural and Environmental Sciences, University of Southampton, Highfield, Southampton, SO17 1BJ, England, UK
| | - Simon J Coles
- UK National Crystallographic Service, Chemistry, Faculty of Natural and Environmental Sciences, University of Southampton, Highfield, Southampton, SO17 1BJ, England, UK
| | - Emma Richards
- School of Chemistry, Main Building, Cardiff University, Cardiff CF10 3AT, Cymru/Wales, UK.
| | - Simon J A Pope
- School of Chemistry, Main Building, Cardiff University, Cardiff CF10 3AT, Cymru/Wales, UK.
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5
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Khurana R, Gupta S, Ali ME. First-Principles Investigations of Magnetic Anisotropy and Spin-Crossover Behavior of Fe(III)-TBP Complexes. J Phys Chem A 2021; 125:2197-2207. [PMID: 33617261 DOI: 10.1021/acs.jpca.1c00022] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
With the ongoing effort to obtain mononuclear 3d-transition-metal complexes that manifest slow relaxation of magnetization and, hence, can behave as single-molecule magnets (SMMs), we have modeled 14 Fe(III) complexes based on an experimentally synthesized (PMe3)2FeCl3 complex [J. Am. Chem. Soc. 2017, 139 (46), 16474-16477], by varying the axial ligands with group XV elements (N, P, and As) and equatorial halide ligands from F, Cl, Br, and I. Out of these, nine complexes possess large zero field splitting (ZFS) parameter D in the range of -40 to -60 cm-1. The first-principles investigation of the ground-spin state applying density functional theory (DFT) and wave function-based multiconfigurations methods, e.g., SA-CASSCF/NEVPT2, are found to be quite consistent except for few delicate cases with near-degenerate spin states. In such cases, the hybrid B3LYP functional is found to be biased toward high-spin (HS) state. Altering the percentage of exact exchange admixed in the B3LYP functional leads to intermediate-spin (IS) ground state consistent with the multireference calculations. The origin of large zero field splitting (ZFS) in the Fe(III)-based trigonal bipyramidal (TBP) complexes is investigated. Furthermore, a number of complexes are identified with very small ΔGHS-ISadia. values indicating the possible spin-crossover phenomenon between the bistable spin states.
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Affiliation(s)
- Rishu Khurana
- Institute of Nano Science and Technology, Sector-81, Mohali, Punjab 140306, India
| | - Sameer Gupta
- 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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6
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Shil S, Sen S. Cobaltocene-Coupled Cumulene: A Perspective on Chiral Magnet and Spintronics Device Design. Inorg Chem 2020; 59:16905-16912. [DOI: 10.1021/acs.inorgchem.0c01825] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Suranjan Shil
- Manipal Centre for Natural Sciences, Centre of Excellence, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India
| | - Sabyasachi Sen
- Department of Physics, JIS College of Engineering, Block-A, Phase-III, Nadia, Kalyani, West Bengal 741235, India
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7
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Sutradhar T, Misra A. Enhancement of Nonlinear Optical Properties of Indole Based Dyes through Electron Acceptor and π‐Linker for Dye‐Sensitized Solar Cell Applications. ChemistrySelect 2019. [DOI: 10.1002/slct.201803992] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Tanushree Sutradhar
- Department of ChemistryUniversity of North Bengal Darjeeling – 734 013, West Bengal India
| | - Anirban Misra
- Department of ChemistryUniversity of North Bengal Darjeeling – 734 013, West Bengal India
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8
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Lin CY, Chen JH, Tung JY. Molecular structures of cobalt complexes of 2-aza-2-[p-methylbenzyl]-5,10,15,20-tetraphenyl-21-carbaporphyrin: [Co(2-NCH2-p-C6H4CH3-21-m-CH2C6H4CH3NCTPP)L] (L = Cl−, N*CS−). Polyhedron 2018. [DOI: 10.1016/j.poly.2017.10.032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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9
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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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10
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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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11
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Molecular magnetism, quo vadis? A historical perspective from a coordination chemist viewpoint☆. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.03.004] [Citation(s) in RCA: 240] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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12
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Vallejo J, Pardo E, Viciano-Chumillas M, Castro I, Amorós P, Déniz M, Ruiz-Pérez C, Yuste-Vivas C, Krzystek J, Julve M, Lloret F, Cano J. Reversible solvatomagnetic switching in a single-ion magnet from an entatic state. Chem Sci 2017; 8:3694-3702. [PMID: 28580105 PMCID: PMC5437488 DOI: 10.1039/c6sc05188j] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Accepted: 02/13/2017] [Indexed: 12/23/2022] Open
Abstract
A vast impact on molecular nanoscience can be achieved using simple transition metal complexes as dynamic chemical systems to perform specific and selective tasks under the control of an external stimulus that switches "ON" and "OFF" their electronic properties. While the interest in single-ion magnets (SIMs) lies in their potential applications in information storage and quantum computing, the switching of their slow magnetic relaxation associated with host-guest processes is insufficiently explored. Herein, we report a unique example of a mononuclear cobalt(ii) complex in which geometrical constraints are the cause of easy and reversible water coordination and its release. As a result, a reversible and selective colour and SIM behaviour switch occurs between a "slow-relaxing" deep red anhydrous material (compound 1) and its "fast-relaxing" orange hydrated form (compound 2). The combination of this optical and magnetic switching in this new class of vapochromic and thermochromic SIMs offers fascinating possibilities for designing multifunctional molecular materials.
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Affiliation(s)
- J Vallejo
- Institut de Ciència Molecular (ICMOL) , Universitat de València , 46980 Paterna , València , Spain . ;
| | - E Pardo
- Institut de Ciència Molecular (ICMOL) , Universitat de València , 46980 Paterna , València , Spain . ;
| | - M Viciano-Chumillas
- Institut de Ciència Molecular (ICMOL) , Universitat de València , 46980 Paterna , València , Spain . ;
| | - I Castro
- Institut de Ciència Molecular (ICMOL) , Universitat de València , 46980 Paterna , València , Spain . ;
| | - P Amorós
- Institut de Ciència del Materials (ICMUV) , Universitat de València , 46980 Paterna , València , Spain
| | - M Déniz
- Laboratorio de Rayos X y Materiales Moleculares , Departamento de Física , Facultad de Ciencias (Sección Física) , Universidad de La Laguna , 38201 Tenerife , Spain
| | - C Ruiz-Pérez
- Laboratorio de Rayos X y Materiales Moleculares , Departamento de Física , Facultad de Ciencias (Sección Física) , Universidad de La Laguna , 38201 Tenerife , Spain
| | - C Yuste-Vivas
- Institut de Ciència Molecular (ICMOL) , Universitat de València , 46980 Paterna , València , Spain . ;
| | - J Krzystek
- National High Magnetic Field Laboratory (NHMFL) , Florida State University , Tallahassee , Florida 32310 , USA
| | - M Julve
- Institut de Ciència Molecular (ICMOL) , Universitat de València , 46980 Paterna , València , Spain . ;
| | - F Lloret
- Institut de Ciència Molecular (ICMOL) , Universitat de València , 46980 Paterna , València , Spain . ;
| | - J Cano
- Institut de Ciència Molecular (ICMOL) , Universitat de València , 46980 Paterna , València , Spain . ;
- Fundació General de la Universitat de València (FGUV) , Spain
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13
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GUPTA TULIKA, VELMURUGAN GUNASEKARAN, RAJESHKUMAR THAYALAN, RAJARAMAN GOPALAN. Role of Lanthanide-Ligand bonding in the magnetization relaxation of mononuclear single-ion magnets: A case study on Pyrazole and Carbene ligated Ln I I I (Ln=Tb, Dy, Ho, Er) complexes. J CHEM SCI 2016. [DOI: 10.1007/s12039-016-1147-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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14
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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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15
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Maddock LCH, Cadenbach T, Kennedy AR, Borilovic I, Aromí G, Hevia E. Accessing Sodium Ferrate Complexes Containing Neutral and Anionic N-Heterocyclic Carbene Ligands: Structural, Synthetic, and Magnetic Insights. Inorg Chem 2015; 54:9201-10. [DOI: 10.1021/acs.inorgchem.5b01638] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Lewis C. H. Maddock
- WestCHEM,
Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, U.K. G1 1XL
| | - Thomas Cadenbach
- WestCHEM,
Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, U.K. G1 1XL
| | - Alan R. Kennedy
- WestCHEM,
Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, U.K. G1 1XL
| | - Ivana Borilovic
- Departament
de Quı́mica Inorgànica, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain
| | - Guillem Aromí
- Departament
de Quı́mica Inorgànica, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain
| | - Eva Hevia
- WestCHEM,
Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, U.K. G1 1XL
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16
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Saber MR, Dunbar KR. Ligands effects on the magnetic anisotropy of tetrahedral cobalt complexes. Chem Commun (Camb) 2015; 50:12266-9. [PMID: 25183324 DOI: 10.1039/c4cc05724d] [Citation(s) in RCA: 160] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The effect of ligands with heavy donor atoms on the magnetic anisotropy of the pseudo-tetrahedral cobalt complexes, Co(quinoline)2I2 (1) and Co(EPh3)2I2 (2-3) (E = P, As) has been investigated. The axial zero-field splitting parameter D was found to vary from +9.2 cm(-1) in 1 to -36.9 cm(-1) in 2 and -74.7 cm(-1) in 3. Compounds 2 and 3 exhibit slow relaxation of the magnetization up to 4 K under an applied dc field, indicating SMM behavior.
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Affiliation(s)
- Mohamed R Saber
- Department of Chemistry, Texas A&M University, College Station, TX 77842-3012, USA.
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17
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Rudowicz C, Karbowiak M. Disentangling intricate web of interrelated notions at the interface between the physical (crystal field) Hamiltonians and the effective (spin) Hamiltonians. Coord Chem Rev 2015. [DOI: 10.1016/j.ccr.2014.12.006] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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18
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Lukov VV, Kogan VA, Levchenkov SI, Shcherbakov IN, Popov LD. Modern studies in the area of molecular magnets: State, problems, and prospects. RUSS J COORD CHEM+ 2015. [DOI: 10.1134/s1070328415010054] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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20
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Goswami T, Misra A. On the Control of Magnetic Anisotropy through an External Electric Field. Chemistry 2014; 20:13951-6. [PMID: 25154493 DOI: 10.1002/chem.201403370] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2014] [Indexed: 11/05/2022]
Affiliation(s)
- Tamal Goswami
- Department of Chemistry, University of North Bengal, Darjeeling 734013, West Bengal (India)
| | - Anirban Misra
- Department of Chemistry, University of North Bengal, Darjeeling 734013, West Bengal (India)
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21
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Liu W, Christian JH, Al-Oweini R, Bassil BS, van Tol J, Atanasov M, Neese F, Dalal NS, Kortz U. Synthesis, Detailed Characterization, and Theoretical Understanding of Mononuclear Chromium(III)-Containing Polyoxotungstates [CrIII(HXVW7O28)2]13– (X = P, As) with Exceptionally Large Magnetic Anisotropy. Inorg Chem 2014; 53:9274-83. [DOI: 10.1021/ic501385r] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Wenjing Liu
- Jacobs University, School of Engineering and Science, P.O. Box 750561, 28725 Bremen, Germany
| | - Jonathan H. Christian
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
- National High Magnetic Field Laboratory, Florida State University, 1800 E Paul Dirac Drive, Tallahassee, Florida 32306, United States
| | - Rami Al-Oweini
- Jacobs University, School of Engineering and Science, P.O. Box 750561, 28725 Bremen, Germany
| | - Bassem S. Bassil
- Jacobs University, School of Engineering and Science, P.O. Box 750561, 28725 Bremen, Germany
| | - Johan van Tol
- National High Magnetic Field Laboratory, Florida State University, 1800 E Paul Dirac Drive, Tallahassee, Florida 32306, United States
| | - Mihail Atanasov
- Max-Planck Institute for Chemical Energy Conversion, Stiftstrasse
34-36, 45470 Mülheim/Ruhr, Germany
- Institute for General and Inorganic Chemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
| | - Frank Neese
- Max-Planck Institute for Chemical Energy Conversion, Stiftstrasse
34-36, 45470 Mülheim/Ruhr, Germany
| | - Naresh S. Dalal
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
- National High Magnetic Field Laboratory, Florida State University, 1800 E Paul Dirac Drive, Tallahassee, Florida 32306, United States
| | - Ulrich Kortz
- Jacobs University, School of Engineering and Science, P.O. Box 750561, 28725 Bremen, Germany
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Brumboiu IE, Totani R, de Simone M, Coreno M, Grazioli C, Lozzi L, Herper HC, Sanyal B, Eriksson O, Puglia C, Brena B. Elucidating the 3d electronic configuration in manganese phthalocyanine. J Phys Chem A 2014; 118:927-32. [PMID: 24428172 DOI: 10.1021/jp4100747] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
To shed light on the metal 3d electronic structure of manganese phthalocyanine, so far controversial, we performed photoelectron measurements both in the gas phase and as thin film. With the purpose of explaining the experimental results,three different electronic configurations close in energy to one another were studied by means of density functional theory. The comparison between the calculated valence band density of states and the measured spectra revealed that in the gas phase the molecules exhibit a mixed electronic configuration, while in the thin film, manganese phthalocyanine finds itself in the theoretically computed ground state, namely, the b1(2g)e3(g)a1(1g)b0(1g) electronic configuration.
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Affiliation(s)
- Iulia Emilia Brumboiu
- Department of Physics and Astronomy, Uppsala University , Box-516, SE-75120 Uppsala, Sweden
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A theoretical study on magnetic properties of bis-TEMPO diradicals with possible application. COMPUT THEOR CHEM 2013. [DOI: 10.1016/j.comptc.2013.09.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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