1
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Biswas S, Havlicek L, Nemec I, Salitros I, Mandal L, Neugebauer P, Kuppusamy SK, Ruben M. Levamisole Based Co(II) Single-Ion Magnet. Chem Asian J 2024:e202400574. [PMID: 38870468 DOI: 10.1002/asia.202400574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Revised: 06/13/2024] [Accepted: 06/13/2024] [Indexed: 06/15/2024]
Abstract
A new Co(II) complex, [Co(NCS)2(L)2] (1) has been synthesized based on levamisole (L) as a new ligand. Single-crystal X-ray diffraction analyses confirm that the Co(II) ion is having a distorted tetrahedral coordination geometry in the complex. Notably strong intramolecular S⋅⋅⋅S and S⋅⋅⋅N interactions has been confirmed by employing Quantum Theory of Atoms in Molecules (QTAIM). These intramolecular interactions occur among the sulfur and nitrogen atoms of the levamisole ligands and also the nitrogen atoms of the thiocyanate. Direct current (dc) magnetic analyses reveal presence of zero field splitting (ZFS) and large magnetic anisotropy on Co(II). Detailed ab initio ligand field theory calculations quantitatively predicted the magnitude of ZFS. Prominent field-induced single-ion magnet (SIM) behavior was observed for 1 from dynamic magnetization measurements. Slow magnetic relaxation follows an Orbach mechanism with the effective energy barrier Ueff=29.6 (7) K and relaxation time τo=1.4 (4)×10-9 s.
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Affiliation(s)
- Soumava Biswas
- Dr. Vishwanath Karad MIT World Peace University Survey No, 124, Paud Rd, Kothrud, Pune, 411038, Maharashtra, India
| | - Lubomir Havlicek
- Central European Institute of Technology, Brno University of Technology, Purkynova 656/123, 61200, Brno, Czech Republic
- Institute of Physics of Materials, Czech Academy of Sciences, Zizkova 22, 61662, Brno, Czech Republic
| | - Ivan Nemec
- Central European Institute of Technology, Brno University of Technology, Purkynova 656/123, 61200, Brno, Czech Republic
- Department of Inorganic Chemistry, Faculty of Science, Palacky University, 17. listopadu 12, 77147, Olomouc, Czech Republic
| | - Ivan Salitros
- Central European Institute of Technology, Brno University of Technology, Purkynova 656/123, 61200, Brno, Czech Republic
- Department of Inorganic Chemistry, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava., Bratislava, SK-81237, Slovakia
| | - Leena Mandal
- Department of Chemistry, Polba Mahavidyalaya, Polba Hooghly, PIN-712148, West Bengal, India
| | - Petr Neugebauer
- Central European Institute of Technology, Brno University of Technology, Purkynova 656/123, 61200, Brno, Czech Republic
| | - Senthil Kumar Kuppusamy
- Institute of Quantum Materials and Technologies (IQMT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Mario Ruben
- Institute of Quantum Materials and Technologies (IQMT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz1, 76344, Eggenstein-Leopoldshafen, Germany
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2
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Neumann T, Thompson BC, Hebron D, Graycon DM, Collauto A, Roessler MM, Wilson DWN, Musgrave RA. Heterobimetallic 3d-4f complexes supported by a Schiff-base tripodal ligand. Dalton Trans 2024; 53:9921-9932. [PMID: 38808633 DOI: 10.1039/d3dt03760f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2024]
Abstract
Complexes featuring multiple metal centres are of growing interest regarding metal-metal cooperation and its tuneability. Here the synthesis and characterisation of heterobimetallic complexes of a 3d metal (4: Mn, 5: Co) and lanthanum supported by a (1,1,1-tris[(3-methoxysalicylideneamino)methyl]ethane) ligand is reported, as well as discussion of their electronic structure via electron paramagnetic resonance (EPR) spectroscopy, electrochemical experiments and computational studies. Competitive binding experiments of the ligand and various metal salts unequivocally demonstrate that in these heterobimetallic complexes the 3d metal (Mn, Co) selectively occupies the κ6-N3O3 binding site of the ligand, whilst La occupies the κ6-O6 metal binding site in line with their relative oxophilicities. EPR spectroscopy supported by density functional theory analysis indicates that the 3d metal is high spin in both cases (S = 5/2 (Mn), 3/2 (Co)). Cyclic voltammetry studies on the Mn/La and Co/La bimetallic complexes revealed a quasi-reversible Mn2+/3+ redox process and poorly-defined irreversible oxidation events respectively.
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Affiliation(s)
- Till Neumann
- Department of Chemistry, King's College London, Britannia House, 7 Trinity Street, London, SE1 1DB, UK.
| | - Benedict C Thompson
- Department of Chemistry, King's College London, Britannia House, 7 Trinity Street, London, SE1 1DB, UK.
| | - Denny Hebron
- Department of Chemistry, King's College London, Britannia House, 7 Trinity Street, London, SE1 1DB, UK.
| | - Daniel M Graycon
- Department of Chemistry, King's College London, Britannia House, 7 Trinity Street, London, SE1 1DB, UK.
| | - Alberto Collauto
- Molecular Sciences Research Hub, Department of Chemistry, Imperial College London, 82 Wood Lane, London, W12 0BZ, UK
| | - Maxie M Roessler
- Molecular Sciences Research Hub, Department of Chemistry, Imperial College London, 82 Wood Lane, London, W12 0BZ, UK
| | - Daniel W N Wilson
- Department of Chemistry, King's College London, Britannia House, 7 Trinity Street, London, SE1 1DB, UK.
| | - Rebecca A Musgrave
- Department of Chemistry, King's College London, Britannia House, 7 Trinity Street, London, SE1 1DB, UK.
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3
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Gallagher P, Savoini A, Saady A, Maynard JRJ, Butler PWV, Tizzard GJ, Goldup SM. Facial Selectivity in Mechanical Bond Formation: Axially Chiral Enantiomers and Geometric Isomers from a Simple Prochiral Macrocycle. J Am Chem Soc 2024; 146:9134-9141. [PMID: 38507717 PMCID: PMC10996000 DOI: 10.1021/jacs.3c14329] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 02/12/2024] [Accepted: 02/14/2024] [Indexed: 03/22/2024]
Abstract
In 1971, Schill recognized that a prochiral macrocycle encircling an oriented axle led to geometric isomerism in rotaxanes. More recently, we identified an overlooked chiral stereogenic unit in rotaxanes that arises when a prochiral macrocycle encircles a prochiral axle. Here, we show that both stereogenic units can be accessed using equivalent strategies, with a single weak stereodifferentiating interaction sufficient for moderate to excellent stereoselectivity. Using this understanding, we demonstrated the first direct enantioselective (70% ee) synthesis of a mechanically axially chiral rotaxane.
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Affiliation(s)
- Peter
R. Gallagher
- Chemistry, University of Southampton, University Road, Southampton, SO17 1BJ, U.K.
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.
| | - Andrea Savoini
- Chemistry, University of Southampton, University Road, Southampton, SO17 1BJ, U.K.
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.
| | - Abed Saady
- Chemistry, University of Southampton, University Road, Southampton, SO17 1BJ, U.K.
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.
| | - John R. J. Maynard
- Chemistry, University of Southampton, University Road, Southampton, SO17 1BJ, U.K.
| | - Patrick W. V. Butler
- Chemistry, University of Southampton, University Road, Southampton, SO17 1BJ, U.K.
| | - Graham J. Tizzard
- Chemistry, University of Southampton, University Road, Southampton, SO17 1BJ, U.K.
| | - Stephen M. Goldup
- Chemistry, University of Southampton, University Road, Southampton, SO17 1BJ, U.K.
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.
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4
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Wu DQ, Kumari K, Wan Y, Gao X, Guo M, Liu G, Shao D, Zhai B, Singh SK. Binuclear cobalt(II) and two-dimensional manganese(II) coordination compounds self-assembled by mixed bipyridine-tetracarboxylic ligands with single-ion magnet properties. Dalton Trans 2023; 52:16197-16205. [PMID: 37873572 DOI: 10.1039/d3dt03016d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
A cobalt(II) complex and manganese(II) coordination polymer, formulated as [Co2(H2btca)(mbpy)4][H2btca]·4H2O (1) and {Mn2(btca)(mbpy)2(H2O)2}n (2) (H4btca = 1,2,4,5-benzenetetracarboxylic acid; mbpy = 4,4'-dimethyl-2,2'-bipyridyl), constructed by mixed bipyridine-tetracarboxylic ligands were synthesized and characterized. Single-crystal structural analyses reveal that compound 1 is a discrete neutral binuclear molecule, while compound 2 is a two-dimensional (2D) coordination polymer. The metal ions in these compounds are well isolated, with an intramolecular Co2+⋯Co2+ distance of 9.170 Å for 1 and Mn2+⋯Mn2+ separation of 10.984 and 11.164 Å for 2 due to the bulk tetracarboxylic linker. This isolation gives rise to a single-ion magnetism origin of the compounds. Magnetic studies reveal a large zero-field splitting parameter D of 82.6 cm-1 for 1, while a very small D of 0.42 cm-1 was observed for 2. Interestingly, dynamic ac magnetic measurements exhibited slow magnetic relaxation under the external dc field of the two compounds, revealing the field-supported single-ion magnet (SIM) of 1 and 2. The detailed theoretical calculations were further applied to understand the electronic structures, magnetic anisotropy, and relaxation dynamics in 1 and 2. Combined with our recently reported compound (Eur. J. Inorg. Chem., 2022, e202200354), the foregoing results provide not only a rare binuclear cobalt(II) SIM and the first 2D manganese(II) SIM coordination polymer but also a bipyridine-tetracarboxylic ligand approach toward novel SIMs.
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Affiliation(s)
- Dong-Qing Wu
- Engineering Research Center of Photoelectric Functional Material, School of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, P. R. China.
| | - Kusum Kumari
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi-502285, Sangareddy, Telangana, India.
| | - Yi Wan
- Hubei Key Laboratory of Processing and Application of Catalytic Materials, College of Chemistry and Chemical Engineering, Huanggang Normal University, Huanggang 438000, P. R. China.
| | - Xueling Gao
- Engineering Research Center of Photoelectric Functional Material, School of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, P. R. China.
| | - Mengxi Guo
- Engineering Research Center of Photoelectric Functional Material, School of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, P. R. China.
| | - Genyan Liu
- Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Wuhan Institute of Technology, Wuhan 430205, P. R. China
| | - Dong Shao
- Hubei Key Laboratory of Processing and Application of Catalytic Materials, College of Chemistry and Chemical Engineering, Huanggang Normal University, Huanggang 438000, P. R. China.
| | - Bin Zhai
- Engineering Research Center of Photoelectric Functional Material, School of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, P. R. China.
| | - Saurabh Kumar Singh
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi-502285, Sangareddy, Telangana, India.
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5
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Macek L, Bellamy JC, Faber K, Milson CR, Landee CP, Dickie DA, Turnbull MM. Transition metal halide complexes of 4′-aminoacetophenone: Syntheses, structures, and magnetic behavior. Polyhedron 2023. [DOI: 10.1016/j.poly.2022.116214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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6
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Kumar Sahu P, Kharel R, Shome S, Goswami S, Konar S. Understanding the unceasing evolution of Co(II) based single-ion magnets. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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7
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Shao D, Moorthy S, Peng P, Tang WJ, Shi L, Wang ZJ, Wei XQ, Singh SK. A Single‐Ion Magnet Tape with Five‐Coordinate Cobalt(II) Centers. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Dong Shao
- Huanggang Normal University chemistry Xianggang Road 147 438000 Huanggang CHINA
| | - Shruti Moorthy
- Indian Institute of Technology Hyderabad Chemistry INDIA
| | - Peng Peng
- Huanggang Normal University Chemistry CHINA
| | | | - Le Shi
- Jagiellonian University in Krakow: Uniwersytet Jagiellonski w Krakowie Chemistry POLAND
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8
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Shao D, Xu F, Yin L, Li H, Sun Y, Ouyang Z, Wang Z, Zhang Y, Wang X. Fine‐Tuning
of Structural Distortion and Magnetic Anisotropy by Organosulfonates in Octahedral Cobalt(
II
) Complexes. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202200284] [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)
- Dong Shao
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 P. R. China
- Hubei Key Laboratory of Processing and Application of Catalytic Materials, College of Chemistry and Chemical Engineering Huanggang Normal University Huanggang 438000 P. R. China
| | - Fang‐Xue Xu
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 P. R. China
| | - Lei Yin
- Wuhan National High Magnetic Field Centre Huazhong University of Science and Technology Wuhan 430074 P. R. China
| | - Hong‐Qing Li
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 P. R. China
| | - Yu‐Chen Sun
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 P. R. China
| | - Zhong‐Wen Ouyang
- Wuhan National High Magnetic Field Centre Huazhong University of Science and Technology Wuhan 430074 P. R. China
| | - Zhen‐Xing Wang
- Wuhan National High Magnetic Field Centre Huazhong University of Science and Technology Wuhan 430074 P. R. China
| | - Yi‐Quan Zhang
- Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology Nanjing Normal University Nanjing 210097 P. R. 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 P. R. China
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9
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Au-Yeung HY, Deng Y. Distinctive features and challenges in catenane chemistry. Chem Sci 2022; 13:3315-3334. [PMID: 35432874 PMCID: PMC8943846 DOI: 10.1039/d1sc05391d] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 02/04/2022] [Indexed: 11/21/2022] Open
Abstract
From being an aesthetic molecular object to a building block for the construction of molecular machines, catenanes and related mechanically interlocked molecules (MIMs) continue to attract immense interest in many research areas. Catenane chemistry is closely tied to that of rotaxanes and knots, and involves concepts like mechanical bonds, chemical topology and co-conformation that are unique to these molecules. Yet, because of their different topological structures and mechanical bond properties, there are some fundamental differences between the chemistry of catenanes and that of rotaxanes and knots although the boundary is sometimes blurred. Clearly distinguishing these differences, in aspects of bonding, structure, synthesis and properties, between catenanes and other MIMs is therefore of fundamental importance to understand their chemistry and explore the new opportunities from mechanical bonds.
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Affiliation(s)
- Ho Yu Au-Yeung
- Department of Chemistry, The University of Hong Kong Pokfulam Road Hong Kong P. R. China
- State Key Laboratory of Synthetic Chemistry, The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Yulin Deng
- Department of Chemistry, The University of Hong Kong Pokfulam Road Hong Kong P. R. China
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10
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Wilson BH, Ward JS, Young DC, Liu J, Mathonière C, Clérac R, Kruger PE. Self‐Assembly Synthesis of a [2]Catenane Co
II
Single‐Molecule Magnet. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202113837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Benjamin H. Wilson
- MacDiarmid Institute for Advanced Materials and Nanotechnology School of Physical and Chemical Sciences University of Canterbury Private Bag 4800 Christchurch 8041 New Zealand
- Current address Bernal Institute University of Limerick Limerick V94 T9PX Ireland
| | - Jas S. Ward
- MacDiarmid Institute for Advanced Materials and Nanotechnology School of Physical and Chemical Sciences University of Canterbury Private Bag 4800 Christchurch 8041 New Zealand
| | - David C. Young
- MacDiarmid Institute for Advanced Materials and Nanotechnology School of Physical and Chemical Sciences University of Canterbury Private Bag 4800 Christchurch 8041 New Zealand
| | - Jun‐Liang Liu
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, UMR 5031 33600 Pessac France
| | - Corine Mathonière
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, UMR 5031 33600 Pessac France
| | - Rodolphe Clérac
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, UMR 5031 33600 Pessac France
| | - Paul E. Kruger
- MacDiarmid Institute for Advanced Materials and Nanotechnology School of Physical and Chemical Sciences University of Canterbury Private Bag 4800 Christchurch 8041 New Zealand
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11
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Shao D, Moorthy S, Zhou Y, Wu ST, Zhu JY, Yang J, Wu D, Tian Z, Singh SKK. Field-induced slow magnetic relaxation behaviours in binuclear cobalt(II) metallocycle and exchange-coupled cluster. Dalton Trans 2022; 51:9357-9368. [DOI: 10.1039/d2dt01620f] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Precise control of structures and magnetic properties of a molecular material constitutes an important challenge to realize the tailor-made magnetic function. Herein, we reported that the ligand-directed coordination self-assembly of...
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12
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Hoyas Pérez N, Sherin PS, Posligua V, Greenfield JL, Fuchter MJ, Jelfs KE, Kuimova MK, Lewis JEM. Emerging properties from mechanical tethering within a post-synthetically functionalised catenane scaffold. Chem Sci 2022; 13:11368-11375. [DOI: 10.1039/d2sc04101d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 09/06/2022] [Indexed: 11/21/2022] Open
Abstract
Using a post-synthetic modification strategy we have prepared a series of functionalised [2]catenanes to study the impact of mechanically-enforced proximity on functional group properties, including emission, electrochemistry and photoreactivity.
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Affiliation(s)
- Nadia Hoyas Pérez
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, 82 Wood Lane, London W12 0BZ, UK
| | - Peter S. Sherin
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, 82 Wood Lane, London W12 0BZ, UK
| | - Victor Posligua
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, 82 Wood Lane, London W12 0BZ, UK
| | - Jake L. Greenfield
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, 82 Wood Lane, London W12 0BZ, UK
| | - Matthew J. Fuchter
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, 82 Wood Lane, London W12 0BZ, UK
| | - Kim E. Jelfs
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, 82 Wood Lane, London W12 0BZ, UK
| | - Marina K. Kuimova
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, 82 Wood Lane, London W12 0BZ, UK
| | - James E. M. Lewis
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, 82 Wood Lane, London W12 0BZ, UK
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13
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Tian Z, Moorthy S, Xiang H, Peng P, You M, Zhang Q, Yang SY, Zhang YL, Wu D, Singh SKK, Shao D. Tuning chain topologies and magnetic anisotropy in one-dimensional cobalt(II) coordination polymers via distinct dicarboxylates. CrystEngComm 2022. [DOI: 10.1039/d2ce00437b] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Based on a terpyridine derivative and two different dicarboxylate ligands, two new cobalt(II) coordination polymers, namely [Co(pytpy)(DClbdc)]n (1) and [Co(pytpy)(ndc)]n (2) (pytpy = 4'-(4-Pyridyl)-2,2':6',2''-terpyridine, H2DClbc = 2,5-Dichloroterephthalic acid, and H2ndc...
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14
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Moreno-Da Silva S, Martínez JI, Develioglu A, Nieto-Ortega B, de Juan-Fernández L, Ruiz-Gonzalez L, Picón A, Oberli S, Alonso PJ, Moonshiram D, Pérez EM, Burzurí E. Magnetic, Mechanically Interlocked Porphyrin-Carbon Nanotubes for Quantum Computation and Spintronics. J Am Chem Soc 2021; 143:21286-21293. [PMID: 34825564 DOI: 10.1021/jacs.1c07058] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Atomic-scale reproducibility and tunability endorse magnetic molecules as candidates for spin qubits and spintronics. A major challenge is to implant those molecular spins into circuit geometries that may allow one, two, or a few spins to be addressed in a controlled way. Here, the formation of mechanically bonded, magnetic porphyrin dimeric rings around carbon nanotubes (mMINTs) is presented. The mechanical bond places the porphyrin magnetic cores in close contact with the carbon nanotube without disturbing their structures. A combination of spectroscopic techniques shows that the magnetic geometry of the dimers is preserved upon formation of the macrocycle and the mMINT. Moreover, the metallic core selection determines the spin location in the mMINT. The suitability of mMINTs as qubits is explored by measuring their quantum coherence times (Tm). Formation of the dimeric ring preserves the Tm found in the monomer, which remains in the μs scale for mMINTs. The carbon nanotube is used as vessel to place the molecules in complex circuits. This strategy can be extended to other families of magnetic molecules. The size and composition of the macrocycle can be tailored to modulate magnetic interactions between the cores and to introduce magnetic asymmetries (heterometallic dimers) for more complex molecule-based qubits.
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Affiliation(s)
| | - Jesús I Martínez
- Instituto de Nanociencia y Materiales de Aragón (INMA), Universidad de Zaragoza and CSIC, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Aysegul Develioglu
- IMDEA Nanociencia, Campus de Cantoblanco, Calle Faraday 9, 28049 Madrid, Spain
| | - Belén Nieto-Ortega
- IMDEA Nanociencia, Campus de Cantoblanco, Calle Faraday 9, 28049 Madrid, Spain
| | | | - Luisa Ruiz-Gonzalez
- Departamento de Química Inorgánica, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Antonio Picón
- Departamento de Química, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Soléne Oberli
- Departamento de Química, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Pablo J Alonso
- Instituto de Nanociencia y Materiales de Aragón (INMA), Universidad de Zaragoza and CSIC, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Dooshaye Moonshiram
- IMDEA Nanociencia, Campus de Cantoblanco, Calle Faraday 9, 28049 Madrid, Spain
| | - Emilio M Pérez
- IMDEA Nanociencia, Campus de Cantoblanco, Calle Faraday 9, 28049 Madrid, Spain
| | - Enrique Burzurí
- IMDEA Nanociencia, Campus de Cantoblanco, Calle Faraday 9, 28049 Madrid, Spain.,Departamento de Física de la Materia Condensada, Universidad Autónoma de Madrid, 28049 Madrid, Spain
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15
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McCarney EP, McCarthy WJ, Lovitt JI, Gunnlaugsson T. Macrocyclic vs. [2]catenane btp structures: influence of (aryl) substitution on the self templation of btp ligands in macrocyclic synthesis. Org Biomol Chem 2021; 19:10189-10200. [PMID: 34788352 DOI: 10.1039/d1ob02032c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of four 2,6-bis(1,2,3-triazol-4-yl)pyridine (btp) olefin based ligands 3, 4, 11 and 12 is described and their attempted use to form mechanically interlocked molecules using ring closing metatheses (RCM) reactions. The btp ligands were modified in two ways, in 3 and 4 the aryl substitution pattern was changed from 4th position to 3rd position and in the case of 11 and 12, the arms were replaced with aliphatic chains. Our study demonstrates that for all four ligands, the RCM reactions only result in the formation of macrocyclic structures, which in three of the cases, were structurally characterised in both solution (using NMR and HRMS) and in the solid-state using X-ray crystallography. NMR studies were also carried out to investigate if these ligands could preorganise in solution via hydrogen bonding interactions. This study provides a handle of how such precursor substitution can be used to direct the formation of macrocycles or mechanically interlocked structures.
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Affiliation(s)
- Eoin P McCarney
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI), Trinity College Dublin, The University of Dublin, Dublin 2, Ireland.
| | - William J McCarthy
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI), Trinity College Dublin, The University of Dublin, Dublin 2, Ireland.
| | - June I Lovitt
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI), Trinity College Dublin, The University of Dublin, Dublin 2, Ireland. .,SFI Synthesis and Solid State Pharmaceutical Centre (SSPC), Trinity College Dublin, The University of Dublin, Dublin 2, Ireland
| | - Thorfinnur Gunnlaugsson
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI), Trinity College Dublin, The University of Dublin, Dublin 2, Ireland. .,SFI Synthesis and Solid State Pharmaceutical Centre (SSPC), Trinity College Dublin, The University of Dublin, Dublin 2, Ireland
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Henwood AF, Hegarty IN, McCarney EP, Lovitt JI, Donohoe S, Gunnlaugsson T. Recent advances in the development of the btp motif: A versatile terdentate coordination ligand for applications in supramolecular self-assembly, cation and anion recognition chemistries. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214206] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Wilson BH, Ward JS, Young DC, Liu JL, Mathonière C, Clérac R, Kruger PE. Self-Assembly Synthesis of a [2]Catenane Co II Single-Molecule Magnet. Angew Chem Int Ed Engl 2021; 61:e202113837. [PMID: 34780082 DOI: 10.1002/anie.202113837] [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: 10/12/2021] [Indexed: 11/10/2022]
Abstract
We describe herein the self-assembly synthesis of an octanuclear CoII [2]catenane {[Co4 (H2 L)6 ]2 16+ } formed by the mechanical interlocking of two {[Co4 (H2 L)6 ]8+ } rectangles of unprecedented topology. Subtle manipulation of the synthetic conditions allows the isolation of a mixed-valence [Co2 III /Co2 II ]10+ non-catenated rectangle. The CoII centers in the [2]catenane exhibit slow relaxation of their magnetic moment, i. e. single-molecule magnet properties, dominated by quantum tunneling and Raman relaxation processes. This work shows that metallo-supramolecular chemistry can precisely control the organization of single-molecule magnets in topologically complex arrangements.
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Affiliation(s)
- Benjamin H Wilson
- MacDiarmid Institute for Advanced Materials and Nanotechnology, School of Physical and Chemical Sciences, University of Canterbury, Private Bag 4800, Christchurch, 8041, New Zealand.,Bernal Institute, University of Limerick, Limerick, V94 T9PX, Ireland
| | - Jas S Ward
- MacDiarmid Institute for Advanced Materials and Nanotechnology, School of Physical and Chemical Sciences, University of Canterbury, Private Bag 4800, Christchurch, 8041, New Zealand
| | - David C Young
- MacDiarmid Institute for Advanced Materials and Nanotechnology, School of Physical and Chemical Sciences, University of Canterbury, Private Bag 4800, Christchurch, 8041, New Zealand
| | - Jun-Liang Liu
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, UMR 5031, 33600, Pessac, France
| | - Corine Mathonière
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, UMR 5031, 33600, Pessac, France
| | - Rodolphe Clérac
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, UMR 5031, 33600, Pessac, France
| | - Paul E Kruger
- MacDiarmid Institute for Advanced Materials and Nanotechnology, School of Physical and Chemical Sciences, University of Canterbury, Private Bag 4800, Christchurch, 8041, New Zealand
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Cirulli M, Salvadori E, Zhang Z, Dommett M, Tuna F, Bamberger H, Lewis JEM, Kaur A, Tizzard GJ, van Slageren J, Crespo‐Otero R, Goldup SM, Roessler MM. Rotaxane Co II Complexes as Field-Induced Single-Ion Magnets. Angew Chem Int Ed Engl 2021; 60:16051-16058. [PMID: 33901329 PMCID: PMC8361961 DOI: 10.1002/anie.202103596] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Indexed: 12/02/2022]
Abstract
Mechanically chelating ligands have untapped potential for the engineering of metal ion properties. Here we demonstrate this principle in the context of CoII -based single-ion magnets. Using multi-frequency EPR, susceptibility and magnetization measurements we found that these complexes show some of the highest zero field splittings reported for five-coordinate CoII complexes to date. The predictable coordination behaviour of the interlocked ligands allowed the magnetic properties of their CoII complexes to be evaluated computationally a priori and our combined experimental and theoretical approach enabled us to rationalize the observed trends. The predictable magnetic behaviour of the rotaxane CoII complexes demonstrates that interlocked ligands offer a new strategy to design metal complexes with interesting functionality.
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Affiliation(s)
- Martina Cirulli
- School of Biological and Chemical SciencesQueen Mary University of LondonMile End RoadLondonE1 4NSUK
| | - Enrico Salvadori
- School of Biological and Chemical SciencesQueen Mary University of LondonMile End RoadLondonE1 4NSUK
- Department of ChemistryUniversity of TorinoVia Giuria 710125TorinoItaly
| | - Zhi‐Hui Zhang
- ChemistryUniversity of SouthamptonHighfieldSO 17 1BJUK
| | - Michael Dommett
- School of Biological and Chemical SciencesQueen Mary University of LondonMile End RoadLondonE1 4NSUK
| | - Floriana Tuna
- Department of Chemistry and Photon Science InstituteUniversity of ManchesterOxford RoadManchesterM13 0PLUK
| | - Heiko Bamberger
- Institut für Physikalische ChemieUniversität StuttgartPfaffenwaldring 5570569StuttgartGermany
| | - James E. M. Lewis
- ChemistryUniversity of SouthamptonHighfieldSO 17 1BJUK
- Department of ChemistryImperial College LondonMolecular Sciences Research HubWood LaneLondonW12 0BZUK
| | | | - Graham J. Tizzard
- EPSRC National Crystallographic ServiceUniversity of SouthamptonHighfieldSouthamptonSO17 1BJUK
| | - Joris van Slageren
- Institut für Physikalische ChemieUniversität StuttgartPfaffenwaldring 5570569StuttgartGermany
| | - Rachel Crespo‐Otero
- School of Biological and Chemical SciencesQueen Mary University of LondonMile End RoadLondonE1 4NSUK
| | | | - Maxie M. Roessler
- School of Biological and Chemical SciencesQueen Mary University of LondonMile End RoadLondonE1 4NSUK
- Department of ChemistryImperial College LondonMolecular Sciences Research HubWood LaneLondonW12 0BZUK
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