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Chuprin AS, Belova SA, Vologzhanina AV, Dorovatovskii PV, Voloshin YZ. Preparation, X-ray Characterization, and Reactivity of the Rod-like and Angular Germanium- and Titanium(IV)-Capped Iron(II) Bis-Clathrochelates and Their Mono- and Bis-Capped (Semi)clathrochelate Precursors. Inorg Chem 2024; 63:4299-4311. [PMID: 38364313 DOI: 10.1021/acs.inorgchem.3c04319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2024]
Abstract
Transmetalation of the bis{triethylantimony(V)}-capped iron(II) tris-α-dioximate with n-butylboronic acid afforded the mixed antimony, boron cross-linked clathrochelate with single reactive antimony(V)-based apical fragment. This macrobicyclic precursor easily underwent the transmetalation reactions with germanium and titanium(IV) alkoxides to give the rod-like and angular FeII2MIV-trinuclear bis-clathrochelates. Those of the aforementioned diantimony(V)-capped complex with 3- and 4-carboxyphenylboronic acids afforded the monoboron-capped iron(II) semiclathrochelates, undergoing a double-cyclization (macrobicyclization) with germanium- and titanium(IV)-based capping agents. The reactions in the low-temperature range unexpectedly gave the stable 2:1 associates, formed by the bridging of two carboxyl-terminated macrobicyclic molecules of the mixed carboxylboron, triethylantimony-capped iron(II) clathrochelate with a triethylantimony(V)-based linker fragment. The obtained complexes were characterized using elemental analysis, MALDI-TOF, 1H and 13C{1H} NMR and UV-vis spectra, and single-crystal XRD experiments. The encapsulated iron(II) ion in their 3D-molecules is situated almost in the center of its FeN6-coordination polyhedron possessing a truncated trigonal-pyramidal geometry. Fe-N distances fall in the range 1.887(7)-1.945(4) Å characteristic of the low-spin iron(II) complexes. The cross-linking titanium and germanium(IV) ions in the corresponding bis-clathrochelate molecules form the octahedral MIVO6-coordination polyhedra, the MIV-O distances of which vary from 1.946(2) to 1.964(2) Å and from 1.879(7) to 1.907(6) Å, respectively.
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Affiliation(s)
- Alexander S Chuprin
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28-1 Vavilova St., 119334 Moscow, Russia
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky Prosp., 119991 Moscow, Russia
| | - Svetlana A Belova
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28-1 Vavilova St., 119334 Moscow, Russia
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky Prosp., 119991 Moscow, Russia
| | - Anna V Vologzhanina
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28-1 Vavilova St., 119334 Moscow, Russia
| | - Pavel V Dorovatovskii
- National Research Center Kurchatov Institute, 1 Kurchatova pl., 123098 Moscow, Russia
| | - Yan Z Voloshin
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28-1 Vavilova St., 119334 Moscow, Russia
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky Prosp., 119991 Moscow, Russia
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Chiesa A, Santini P, Garlatti E, Luis F, Carretta S. Molecular nanomagnets: a viable path toward quantum information processing? REPORTS ON PROGRESS IN PHYSICS. PHYSICAL SOCIETY (GREAT BRITAIN) 2024; 87:034501. [PMID: 38314645 DOI: 10.1088/1361-6633/ad1f81] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 01/17/2024] [Indexed: 02/06/2024]
Abstract
Molecular nanomagnets (MNMs), molecules containing interacting spins, have been a playground for quantum mechanics. They are characterized by many accessible low-energy levels that can be exploited to store and process quantum information. This naturally opens the possibility of using them as qudits, thus enlarging the tools of quantum logic with respect to qubit-based architectures. These additional degrees of freedom recently prompted the proposal for encoding qubits with embedded quantum error correction (QEC) in single molecules. QEC is the holy grail of quantum computing and this qudit approach could circumvent the large overhead of physical qubits typical of standard multi-qubit codes. Another important strength of the molecular approach is the extremely high degree of control achieved in preparing complex supramolecular structures where individual qudits are linked preserving their individual properties and coherence. This is particularly relevant for building quantum simulators, controllable systems able to mimic the dynamics of other quantum objects. The use of MNMs for quantum information processing is a rapidly evolving field which still requires to be fully experimentally explored. The key issues to be settled are related to scaling up the number of qudits/qubits and their individual addressing. Several promising possibilities are being intensively explored, ranging from the use of single-molecule transistors or superconducting devices to optical readout techniques. Moreover, new tools from chemistry could be also at hand, like the chiral-induced spin selectivity. In this paper, we will review the present status of this interdisciplinary research field, discuss the open challenges and envisioned solution paths which could finally unleash the very large potential of molecular spins for quantum technologies.
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Affiliation(s)
- A Chiesa
- Dipartimento di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, I-43124 Parma, Italy
- INFN-Sezione di Milano-Bicocca, Gruppo Collegato di Parma, 43124 Parma, Italy
- UdR Parma, INSTM, I-43124 Parma, Italy
| | - P Santini
- Dipartimento di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, I-43124 Parma, Italy
- INFN-Sezione di Milano-Bicocca, Gruppo Collegato di Parma, 43124 Parma, Italy
- UdR Parma, INSTM, I-43124 Parma, Italy
| | - E Garlatti
- Dipartimento di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, I-43124 Parma, Italy
- INFN-Sezione di Milano-Bicocca, Gruppo Collegato di Parma, 43124 Parma, Italy
- UdR Parma, INSTM, I-43124 Parma, Italy
| | - F Luis
- Instituto de Nanociencia y Materiales de Aragon (INMA), CSIC, Universidad de Zaragoza, Zaragoza, Spain
- Departamento de Fısica de la Materia Condensada, Universidad de Zaragoza, Zaragoza, Spain
| | - S Carretta
- Dipartimento di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, I-43124 Parma, Italy
- INFN-Sezione di Milano-Bicocca, Gruppo Collegato di Parma, 43124 Parma, Italy
- UdR Parma, INSTM, I-43124 Parma, Italy
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3
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Belova SA, Belov AS, Danshina AA, Zubavichus YV, Aleshin DY, Pavlov AA, Efimov NN, Voloshin YZ. Effects of solvatomorphism, the nature of a chelating ligand synthon and a counterion on the single crystal XRD structure and SMM properties of paramagnetic monocapped cobalt(II) tris-pyrazoloximates. Dalton Trans 2024; 53:1482-1491. [PMID: 38131298 DOI: 10.1039/d3dt03025c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
A series of monocapped cobalt(II) tris-pyrazoloximates was obtained through the template condensation of the corresponding pyrazoloxime, phenylboronic acid and a suitable cobalt(II) halogenide. Comparing 3-acetylpyrazoloxime versus its methine-containing homolog, the former produced cobalt(II) clathrochelates in substantially higher yields due to the electron donating effect of the methyl substituent, increasing the N-donor ability of its oxime group. Their less N-donor analog with the electron acceptor trifluoromethyl group did not form cobalt(II) complexes of this type. In all their solvent-free and solvent-containing crystals, the encapsulated cobalt(II) ion adopted a high-spin state, as gauged by the Co-N bond lengths of 2.112(4)-2.188(9) Å, and was located almost in the center of its CoN6-coordination polyhedron. Their CoN6-polyhedra had an almost ideal trigonal-prismatic (TP) geometry with distortion angles φ below 4°. This TP-like geometry was assisted by hydrogen bonding between their NH groups and the apical counterion. The absence of methyl groups makes them close to an ideal TP. In contrast, stronger N-H⋯Cl hydrogen bonds occurred in the methyl-containing complex, while the Co-N bond lengths stayed the same at 2.144(2) Å on average. In its solvates with benzene, chloroform and acetone, there is a clear tendency for φ to decrease from 2.7(3)° to 0.47(13)°. The comparable effects of the ribbed methyl substituents, the cross-linking counterion and the lattice solvent on their molecular geometry were observed; the larger the distortions from an ideal TP geometry, the stronger the hydrogen bonds to the corresponding apical halogenide anion. The analysis of the experimental AC- and DC-magnetometry data for their fine-crystalline samples suggests that the passing from the derivative of the methyl-substituted synthon to that of its methine-containing homolog caused a substantial decrease in the magnetic susceptibility value χT and an increase in the QTM contribution to the magnetic relaxation. The effect of a cross-linking halogenide counteranion on the Orbach remagnetization barrier is greater than that of the solvatomorphism of their crystals.
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Affiliation(s)
- Svetlana A Belova
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28-1 Vavilova St., 119334 Moscow, Russia.
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky Prosp., 119991 Moscow, Russia
| | - Alexander S Belov
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28-1 Vavilova St., 119334 Moscow, Russia.
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky Prosp., 119991 Moscow, Russia
| | - Anastasia A Danshina
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28-1 Vavilova St., 119334 Moscow, Russia.
- Moscow Institute of Physics and Technology (National Research University), 9 Institutskiy per., 141700 Dolgoprudny, Moscow Region, Russia
| | - Yan V Zubavichus
- Synchrotron Radiation Facility SKIF, Boreskov Institute of Catalysis SB RAS, 630559 Koltsovo, Russia
| | - Dmitriy Yu Aleshin
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky Prosp., 119991 Moscow, Russia
| | - Alexander A Pavlov
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28-1 Vavilova St., 119334 Moscow, Russia.
- BMSTU Center of National Technological Initiative "Digital Material Science: New Material and Substances", Bauman Moscow State Technical University, 2nd Baumanskaya st. 5, 105005 Moscow, Russia
| | - Nikolay N Efimov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky Prosp., 119991 Moscow, Russia
| | - Yan Z Voloshin
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28-1 Vavilova St., 119334 Moscow, Russia.
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky Prosp., 119991 Moscow, Russia
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Yan LL, Yam VWW. Evolution of Polynuclear Gold(I) Sulfido Complexes from Clusters and Cages to Macrocycles. J Am Chem Soc 2024; 146:609-616. [PMID: 38153960 DOI: 10.1021/jacs.3c10381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2023]
Abstract
Two unprecedented tetratriacontanuclear and tetraicosanuclear gold(I) sulfido clusters (denoted as Au34-LMe and Au24-LCbz) with different temperature-induced stimulus-responsive behavior and emission property have been constructed by taking advantage of the judiciously designed bidentate phosphine ligand. Au34-LMe represents the highest nuclearity of the gold(I) sulfido cluster with more than a thousand atoms in the molecule. Octagonal macrocycles based on metal-cluster nodes have been assembled for the first time. The self-assembly and temperature-induced stimulus-responsive processes were monitored by 1H and 31P{1H} NMR spectroscopy, and the identities of the discrete gold(I) complexes were established by single-crystal structural analysis and high-resolution electrospray ionization mass spectrometry data. The steric effects exerted by the substituents on the V-shaped 1,3-bis(diphenylphosphino)benzene ligand have been shown to govern the self-assembly from the 1D cluster and 3D cage to 2D macrocycles. This work not only offers a new strategy to construct and regulate the structure of 2D macrocyclic gold(I) sulfido complexes but also lays the foundation for the future precise design and controlled construction of higher polygonal and cluster-node macrocycles.
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Affiliation(s)
- Liang-Liang Yan
- Institute of Molecular Functional Materials, State Key Laboratory of Synthetic Chemistry, and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong 999077, P. R. China
| | - Vivian Wing-Wah Yam
- Institute of Molecular Functional Materials, State Key Laboratory of Synthetic Chemistry, and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong 999077, P. R. China
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5
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Adamek M, Pastukh O, Laskowska M, Karczmarska A, Laskowski Ł. Nanostructures as the Substrate for Single-Molecule Magnet Deposition. Int J Mol Sci 2023; 25:52. [PMID: 38203222 PMCID: PMC10778921 DOI: 10.3390/ijms25010052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 12/06/2023] [Accepted: 12/13/2023] [Indexed: 01/12/2024] Open
Abstract
Anchoringsingle-molecule magnets (SMMs) on the surface of nanostructures is gaining particular interest in the field of molecular magnetism. The accurate organization of SMMs on low-dimensional substrates enables controlled interactions and the possibility of individual molecules' manipulation, paving the route for a broad range of nanotechnological applications. In this comprehensive review article, the most studied types of SMMs are presented, and the quantum-mechanical origin of their magnetic behavior is described. The nanostructured matrices were grouped and characterized to outline to the reader their relevance for subsequent compounding with SMMs. Particular attention was paid to the fact that this process must be carried out in such a way as to preserve the initial functionality and properties of the molecules. Therefore, the work also includes a discussion of issues concerning both the methods of synthesis of the systems in question as well as advanced measurement techniques of the resulting complexes. A great deal of attention was also focused on the issue of surface-molecule interaction, which can affect the magnetic properties of SMMs, causing molecular crystal field distortion or magnetic anisotropy modification, which affects quantum tunneling or magnetic hysteresis, respectively. In our opinion, the analysis of the literature carried out in this way will greatly help the reader to design SMM-nanostructure systems.
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Affiliation(s)
| | | | - Magdalena Laskowska
- Institute of Nuclear Physics, Polish Academy of Sciences, PL-31342 Krakow, Poland; (M.A.); (O.P.); (Ł.L.)
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6
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Lockyer SJ, Asthana D, Whitehead GFS, Vitorica‐Yrezabal IJ, Timco GA, McInnes EJL, Winpenny REP. Control and Transferability of Magnetic Interactions in Supramolecular Structures: Trimers of {Cr 7 Ni} Antiferromagnetic Rings. Chemistry 2023; 29:e202302360. [PMID: 37737455 PMCID: PMC10947047 DOI: 10.1002/chem.202302360] [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: 07/24/2023] [Revised: 09/13/2023] [Accepted: 09/22/2023] [Indexed: 09/23/2023]
Abstract
A synthetic strategy is demonstrated to prepare two distinct trimers of antiferromagnetically coupled {Cr7 Ni} rings, substantially varying the magnetic interactions between the spin centres. The interactions were studied using multi-frequency cw EPR: in a trimer linked via non-covalent H-bonding interactions no measurable interaction between rings was seen, while in a trimer linked via iso-nicotinate groups isotropic and anisotropic exchange interactions of +0.42 and -0.8 GHz, respectively, were observed. The latter are the same as those for a simpler hetero-dimer system, showing how the spin-spin interactions can be built in a predictable and modular manner in these systems.
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Affiliation(s)
- Selena J. Lockyer
- Department of ChemistryThe University of ManchesterOxford RoadManchesterM13 9PLUnited Kingdom
| | - Deepak Asthana
- Department of ChemistryThe University of ManchesterOxford RoadManchesterM13 9PLUnited Kingdom
| | - George F. S. Whitehead
- Department of ChemistryThe University of ManchesterOxford RoadManchesterM13 9PLUnited Kingdom
| | | | - Grigore. A. Timco
- Department of ChemistryThe University of ManchesterOxford RoadManchesterM13 9PLUnited Kingdom
| | - Eric J. L. McInnes
- Department of ChemistryThe University of ManchesterOxford RoadManchesterM13 9PLUnited Kingdom
| | - Richard E. P. Winpenny
- Department of ChemistryThe University of ManchesterOxford RoadManchesterM13 9PLUnited Kingdom
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7
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Bennett TS, Nawaz S, Lockyer SJ, Asthana D, Whitehead GFS, Vitorica-Yrezabal IJ, Timco GA, Burton NA, Winpenny REP, McInnes EJL. A ring of rotaxanes: studies of a large paramagnetic assembly in solution. Inorg Chem Front 2023; 10:6945-6952. [PMID: 38021441 PMCID: PMC10660382 DOI: 10.1039/d3qi02165c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 10/26/2023] [Indexed: 12/01/2023]
Abstract
Here we report the synthesis and structural characterization of four [7]rotaxanes formed by coordinating hybrid inorganic-organic [2]rotaxanes to a central {Ni12} core. X-ray single crystal diffraction demonstrate that [7]rotaxanes are formed, with a range of conformations in the crystal. Small angle X-ray scattering supported by molecular dynamic simulations demonstrates that the large molecules are stable in solution and also show that the conformers present in solution are not those found in the crystal. Pulsed EPR spectroscopy show that phase memory times for the {Cr7Ni} rings, which have been proposed as qubits, are reduced but not dramatically by the presence of the {Ni12} cage.
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Affiliation(s)
- Tom S Bennett
- Department of Chemistry, The University of Manchester Oxford Road Manchester M13 9PL UK
| | - Selina Nawaz
- Department of Chemistry, The University of Manchester Oxford Road Manchester M13 9PL UK
| | - Selena J Lockyer
- Department of Chemistry, The University of Manchester Oxford Road Manchester M13 9PL UK
| | - Deepak Asthana
- Department of Chemistry, The University of Manchester Oxford Road Manchester M13 9PL UK
| | - George F S Whitehead
- Department of Chemistry, The University of Manchester Oxford Road Manchester M13 9PL UK
| | | | - Grigore A Timco
- Department of Chemistry, The University of Manchester Oxford Road Manchester M13 9PL UK
| | - Neil A Burton
- Department of Chemistry, The University of Manchester Oxford Road Manchester M13 9PL UK
| | - Richard E P Winpenny
- Department of Chemistry, The University of Manchester Oxford Road Manchester M13 9PL UK
| | - Eric J L McInnes
- Department of Chemistry, The University of Manchester Oxford Road Manchester M13 9PL UK
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8
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Alotaibi R, Booth A, Little E, Brookfield A, Achari A, Lockyer SJ, Timco GA, Whitehead GFS, Vitórica-Yrezábal IJ, Chilton NF, Nair RR, Collison D, Winpenny REP. Synthesis and characterization of heterometallic rings templated through alkylammonium or imidazolium cations. Dalton Trans 2023; 52:7473-7481. [PMID: 37194350 PMCID: PMC10242454 DOI: 10.1039/d3dt00982c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Accepted: 05/09/2023] [Indexed: 05/18/2023]
Abstract
We report the synthesis and structural characterization of a series of heterometallic rings templated via alkylammonium or imidazolium cations. The template and preference of each metal's coordination geometry can control the structure of heterometallic compounds, leading to octa-, nona-, deca-, dodeca-, and tetradeca-metallic rings. The compounds were characterized by single-crystal X-ray diffraction, elemental analysis, magnetometry, and EPR measurements. Magnetic measurements show that the exchange coupling between metal centres is antiferromagnetic. EPR spectroscopy shows that the spectra of {Cr7Zn} and {Cr9Zn} have S = 3/2 ground states, while the spectra of {Cr12Zn2} and {Cr8Zn} are consistent with S = 1 and 2 excited states. The EPR spectra of {(ImidH)-Cr6Zn2}, {(1-MeImH)-Cr8Zn2}, and {(1,2-diMeImH)-Cr8Zn2} include a combination of linkage isomers. The results on these related compounds allow us to examine the transferability of magnetic parameters between compounds.
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Affiliation(s)
- Rajeh Alotaibi
- Department of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, UK.
| | - Amy Booth
- Department of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, UK.
| | - Edmund Little
- Department of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, UK.
| | - Adam Brookfield
- Department of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, UK.
| | - Amritroop Achari
- Department of Chemical Engineering and Analytical Science and National Graphene Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Selena J Lockyer
- Department of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, UK.
| | - Grigore A Timco
- Department of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, UK.
| | - George F S Whitehead
- Department of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, UK.
| | - Iñigo J Vitórica-Yrezábal
- Department of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, UK.
| | - Nicholas F Chilton
- Department of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, UK.
| | - Rahul R Nair
- Department of Chemical Engineering and Analytical Science and National Graphene Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - David Collison
- Department of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, UK.
| | - Richard E P Winpenny
- Department of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, UK.
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Luo D, Xiao H, Zhang MY, Li SD, He L, Lv H, Li CS, Lin QP, Fang WH, Zhang J. Accurate binding of porous aluminum molecular ring catalysts with the substrate. Chem Sci 2023; 14:5396-5404. [PMID: 37234899 PMCID: PMC10208054 DOI: 10.1039/d3sc01260c] [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: 03/08/2023] [Accepted: 03/30/2023] [Indexed: 05/28/2023] Open
Abstract
Metal molecular rings are a class of compounds with aesthetically pleasing symmetry and fundamentally useful properties. The reported work generally focuses on the ring center cavity, and there is little known about those on the ring waist. Herein, we report the discovery of porous aluminum molecular rings and their performance and contribution to the cyanosilylation reaction. We develop a facile ligand induced aggregation and solvent regulation strategy towards AlOC-58NC and AlOC-59NT with high purity, high yield (75% and 70%, respectively) and gram-level scale-up. These molecular rings exhibit a "two-tier" pore feature involving the general central cavity and newly observed equatorial semi-open cavities. AlOC-59NT with two types of one-dimensional channels showed good catalytic activity. The interaction of the aluminum molecular ring catalyst with the substrate has been crystallographically characterized and theoretically confirmed, showing a ring adaptability process that involves the capture and binding of the substrate. This work provides new ideas for the assembly of porous metal molecular rings and to understand the overall reaction pathway involving aldehydes and is expected to inspire the design of low-cost catalysts through structural modifications.
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Affiliation(s)
- Dan Luo
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences 350002 Fuzhou P. R. China
| | - Han Xiao
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences 350002 Fuzhou P. R. China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Min-Yi Zhang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences 350002 Fuzhou P. R. China
| | - Shang-Da Li
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences 350002 Fuzhou P. R. China
| | - Liang He
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences 350002 Fuzhou P. R. China
| | - Hong Lv
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences 350002 Fuzhou P. R. China
| | - Chun-Sen Li
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences 350002 Fuzhou P. R. China
- Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry Xiamen Fujian 361005 China
| | - Qi-Pu Lin
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences 350002 Fuzhou P. R. China
| | - Wei-Hui Fang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences 350002 Fuzhou P. R. China
| | - Jian Zhang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences 350002 Fuzhou P. R. China
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10
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Chuprin AS, Pavlov AA, Vologzhanina AV, Dorovatovskii PV, Makarenkov AV, Ol'shevskaya VA, Dudkin SV, Voloshin YZ. Multistep synthesis and X-ray structures of carboxyl-terminated hybrid iron(II) phthalocyaninatoclathrochelates and their postsynthetic transformation into polytopic carboranyl-containing derivatives. Dalton Trans 2023; 52:3884-3895. [PMID: 36877091 DOI: 10.1039/d3dt00076a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
A multistep general synthetic strategy towards polytopic carboranyl-containing (semi)clathrochelate metal complexes, based on the template synthesis, transmetallation, amide condensation and 1,3-dipolar cycloaddition reactions, is developed. Their mono(semi)clathrochelate precursors with a single reactive group were obtained using a transmetallation of the triethylantimony-capped macrobicyclic precursor. The thus obtained carboxyl-terminated iron(II) semiclathrochelate underwent a macrobicyclization with zirconium(IV) phthalocyaninate to form the corresponding phthalocyaninatoclathrochelate. The direct one-pot template condensation of the suitable chelating and cross-linking ligand synthons on the Fe2+ ion as a matrix was also used for its preparation. Further amide condensation of the aforementioned semiclathrochelate and hybrid complexes with propargylamine in the presence of carbonyldiimidazole gave the (pseudo)cage derivatives with a terminal CC bond. Their "click" reaction with an appropriate carboranylmethyl azide afforded the ditopic carboranosemiclathrochelates and the tritopic carboranyl-containing phthalocyaninatoclathrochelates with a flexible spacer fragment between their polyhedral entities. The obtained new complexes were characterized using elemental analysis, MALDI-TOF mass spectrometry, multinuclear NMR, and UV-vis spectroscopy, and by single crystal X-ray diffraction experiments. Their FeN6-coordination polyhedra show a truncated trigonal-pyramidal geometry, while the cross-linking heptacoordinate Zr4+ or Hf4+ cations in the hybrid compounds form the MIVN4O3-coordination polyhedra with the geometry of a capped trigonal prism.
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Affiliation(s)
- Alexander S Chuprin
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28-1 Vavilova st., 119334 Moscow, Russia.
| | - Alexander A Pavlov
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28-1 Vavilova st., 119334 Moscow, Russia.
- BMSTU Center of National Technological Initiative "Digital Material Science: New Material and Substances", Bauman Moscow State Technical University, 2nd Baumanskaya st. 5, 105005, Moscow, Russia
| | - Anna V Vologzhanina
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28-1 Vavilova st., 119334 Moscow, Russia.
| | - Pavel V Dorovatovskii
- National Research Center Kurchatov Institute, 1 Kurchatova pl., 123098, Moscow, Russia
| | - Anton V Makarenkov
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28-1 Vavilova st., 119334 Moscow, Russia.
| | - Valentina A Ol'shevskaya
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28-1 Vavilova st., 119334 Moscow, Russia.
| | - Semyon V Dudkin
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28-1 Vavilova st., 119334 Moscow, Russia.
| | - Yan Z Voloshin
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28-1 Vavilova st., 119334 Moscow, Russia.
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky pr., 119991 Moscow, Russia
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11
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Zou Y, Lv W, Wang AN, Li XY, Li JH, Wang GM. Gradual Size Enlargement of Aluminum-Oxo Clusters and the Photochromic Properties. Inorg Chem 2023; 62:2617-2624. [PMID: 36716134 DOI: 10.1021/acs.inorgchem.2c03397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Metallic clusters, assembled by functional motifs, possess the attribute of regulating the properties by changing inorganic and organic components. In this work, a series of aluminum-oxo clusters, [Al6O(dmp)4(Hdmp)2]·2iPrOH [Al6-1, H3dmp = 2,2-bis(hydroxymethyl)propionic acid], [Al6(H2thmmg)6]·2DMF·2H2O [Al6-2, H5thmmg = N-tris(hydroxymethyl)methylglycine], [Al8(OH)4(NAP-OH)12(MeO)7(MeOH)]Cl·7MeCN·3MeOH (Al8, HNAP-OH = 3-hydroxy-2-naphthoic acid), and [Al10(NA)10(MeO)20] (Al10, HNA = nicotinic acid), were obtained based on different carboxylic acids, realizing metallic ring size enlargement from 5.91 to 9.32 Å. They all exhibit good chemical stability. Importantly, the Al8 cluster displays obvious photochromic behavior from pale yellow to orange yellow, originating from the generation of photoinduced radicals in the metal-assisted ligand-ligand electron transfer process of 3-hydroxy-2-naphthoic acid (HNAP-OH). This work enriches the metal ring cluster chemistry and reports the example of the aluminum-oxo cluster-based photochromic material, developing a novel system of photochromic materials.
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Affiliation(s)
- Ying Zou
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, Shandong 266071, P. R. China
| | - Wei Lv
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, Shandong 266071, P. R. China
| | - A-Ni Wang
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, Shandong 266071, P. R. China
| | - Xiao-Yu Li
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, Shandong 266071, P. R. China
| | - Jin-Hua Li
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, Shandong 266071, P. R. China
| | - Guo-Ming Wang
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, Shandong 266071, P. R. China
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12
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Geue N, Bennett TS, Ramakers LAI, Timco GA, McInnes EJL, Burton NA, Armentrout PB, Winpenny REP, Barran PE. Adduct Ions as Diagnostic Probes of Metallosupramolecular Complexes Using Ion Mobility Mass Spectrometry. Inorg Chem 2023; 62:2672-2679. [PMID: 36716284 PMCID: PMC9930111 DOI: 10.1021/acs.inorgchem.2c03698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Following electrospray ionization, it is common for analytes to enter the gas phase accompanied by a charge-carrying ion, and in most cases, this addition is required to enable detection in the mass spectrometer. These small charge carriers may not be influential in solution but can markedly tune the analyte properties in the gas phase. Therefore, measuring their relative influence on the target molecule can assist our understanding of the structure and stability of the analyte. As the formed adducts are usually distinguishable by their mass, differences in the behavior of the analyte resulting from these added species (e.g., structure, stability, and conformational dynamics) can be easily extracted. Here, we use ion mobility mass spectrometry, supported by density functional theory, to investigate how charge carriers (H+, Na+, K+, and Cs+) as well as water influence the disassembly, stability, and conformational landscape of the homometallic ring [Cr8F8(O2CtBu)16] and the heterometallic rotaxanes [NH2RR'][Cr7MF8(O2CtBu)16], where M = MnII, FeII, CoII, NiII, CuII, ZnII, and CdII. The results yield new insights on their disassembly mechanisms and support previously reported trends in cavity size and transition metal properties, demonstrating the potential of adduct ion studies for characterizing metallosupramolecular complexes in general.
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Affiliation(s)
- Niklas Geue
- Michael
Barber Centre for Collaborative Mass Spectrometry, Manchester Institute
of Biotechnology, Department of Chemistry, The University of Manchester, 131 Princess Street, Manchester M1 7DN, UK
| | - Tom S. Bennett
- Department
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Lennart A. I. Ramakers
- Michael
Barber Centre for Collaborative Mass Spectrometry, Manchester Institute
of Biotechnology, Department of Chemistry, The University of Manchester, 131 Princess Street, Manchester M1 7DN, UK
| | - Grigore A. Timco
- Department
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Eric J. L. McInnes
- Department
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Neil A. Burton
- Department
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - P. B. Armentrout
- Department
of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Richard E. P. Winpenny
- Department
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Perdita E. Barran
- Michael
Barber Centre for Collaborative Mass Spectrometry, Manchester Institute
of Biotechnology, Department of Chemistry, The University of Manchester, 131 Princess Street, Manchester M1 7DN, UK,
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13
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Belov AS, Novikov VV, Vologzhanina AV, Pavlov AA, Bogomyakov AS, Zubavichus YV, Svetogorov RD, Zelinskii GE, Voloshin YZ. Synthesis, crystal polymorphism and spin crossover behavior of adamantylboron-capped cobalt(II) hexachloroclathrochelate and its transformation into the Co IIICo IICo III-bis-macrobicyclic derivative. Dalton Trans 2023; 52:347-359. [PMID: 36511081 DOI: 10.1039/d2dt03300c] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Abstract
Fast crystallization of the monoclathrochelate cobalt(II) intracomplex [Co(Cl2Gm)3(BAd)2] (where Cl2Gm2- is a dichloroglyoxime dianion and BAd is an adamantylboron capping group, 1), initially obtained by the direct template condensation of the corresponding chelating α-dioximate and cross-linking ligand synthons on the Co2+ ion as a matrix, from benzene or dichloromethane afforded its structural triclinic and hexagonal polymorphs. Its prolonged recrystallization from dichloromethane under air atmosphere and sunlight irradiation unexpectedly gave the crystals of the CoIIICoIICoIII-trinuclear dodecachloro-bis-clathrochelate intracomplex [[CoIII(Cl2Gm)3(BAd)]2CoII] (2), the molecule of which consists of two macrobicyclic frameworks with encapsulated low-spin (LS) Co3+ ions, which are cross-linked by a μ3-bridging Co2+ ion as a bifunctional Lewis-acidic center. The most plausible pathway of such a 1 → 2 transformation is based on the photoinitiated radical oxidation of dichloromethane with air oxygen giving the reactive species. Cobalt(II) monoclathrochelate 1 was found to undergo a temperature-induced spin crossover (SCO) both in its solutions and in the solid state. In spite of the conformational rigidity of the corresponding quasiaromatic diboron-capped tris-α-dioximate framework, the main parameters of this SCO transition (i.e., its completeness and gradual character) are strongly affected by the nature of the used solvent (in the case of its solutions) and by the structural polymorphism of its crystals (in the solid state). In the latter case, the LS state (S = 1/2) of this complex is more thermally stable and, therefore, the cobalt(II)-centered 1/2 → 3/2 SCO is more gradual than that in solutions.
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Affiliation(s)
- Alexander S Belov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky pr., 119991 Moscow, Russia. .,Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28-1 Vavilova st., 119334 Moscow, Russia
| | - Valentin V Novikov
- Moscow Institute of Physics and Technology, 141700 Moscow Region, Russia
| | - Anna V Vologzhanina
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28-1 Vavilova st., 119334 Moscow, Russia
| | - Alexander A Pavlov
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28-1 Vavilova st., 119334 Moscow, Russia.,National Research University Higher School of Economics, 101000 Moscow, Russia
| | - Artem S Bogomyakov
- International Tomography Center, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - Yan V Zubavichus
- Synchrotron Radiation Facility SKIF, G.K. Boreskov Institute of Catalysis of the Siberian Branch of the Russian Academy of Sciences, 1 Nikolskii pr., 630559 Koltsovo, Russia
| | | | - Genrikh E Zelinskii
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky pr., 119991 Moscow, Russia. .,Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28-1 Vavilova st., 119334 Moscow, Russia
| | - Yan Z Voloshin
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky pr., 119991 Moscow, Russia. .,Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28-1 Vavilova st., 119334 Moscow, Russia
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14
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Alotaibi R, Brookfield A, Fowler JM, Whitehead GFS, Lockyer SJ, Timco GA, Collison D, Schnack J, Winpenny REP. Templating metallocycles with a macrocycle: synthesis, structures and magnetic studies of {Cr 11M 2} complexes. Dalton Trans 2022; 52:20-23. [PMID: 36477464 PMCID: PMC9764323 DOI: 10.1039/d2dt03368b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Addition of 1,4,8,11-tetrazacyclotetradecane (cyclam) to a reaction that produces octametallic rings when simpler amines are used, produces {Cr11M2} "pretzels" (M = ZnII or CuII) where the cyclam coordinates to the MII ion which then sits at the centre of a twelve-metal macrocycle. Magnetic studies were fitted using the finite-temperature Lanczos method (FTLM), and the results demonstrate that exchange interactions are transferable from previous exchange-coupled CrIII rings.
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Affiliation(s)
- Rajeh Alotaibi
- Department of Chemistry, The University of ManchesterOxford RoadManchesterM13 9PLUK,Department of Chemistry, King Saud UniversityRiyadh 11451Saudi Arabia
| | - Adam Brookfield
- Department of Chemistry, The University of ManchesterOxford RoadManchesterM13 9PLUK
| | - Jonathan M. Fowler
- Department of Chemistry, The University of ManchesterOxford RoadManchesterM13 9PLUK
| | | | - Selena J. Lockyer
- Department of Chemistry, The University of ManchesterOxford RoadManchesterM13 9PLUK
| | - Grigore A. Timco
- Department of Chemistry, The University of ManchesterOxford RoadManchesterM13 9PLUK
| | - David Collison
- Department of Chemistry, The University of ManchesterOxford RoadManchesterM13 9PLUK
| | - Jürgen Schnack
- Faculty of Physics, P.O. Box 100131, Bielefeld UniversityD-33501 BielefeldGermany
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15
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Geue N, Bennett TS, Arama AAM, Ramakers LAI, Whitehead GFS, Timco GA, Armentrout PB, McInnes EJL, Burton NA, Winpenny REP, Barran PE. Disassembly Mechanisms and Energetics of Polymetallic Rings and Rotaxanes. J Am Chem Soc 2022; 144:22528-22539. [PMID: 36459680 DOI: 10.1021/jacs.2c07522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
Understanding the fundamental reactivity of polymetallic complexes is challenging due to the complexity of their structures with many possible bond breaking and forming processes. Here, we apply ion mobility mass spectrometry coupled with density functional theory to investigate the disassembly mechanisms and energetics of a family of heterometallic rings and rotaxanes with the general formula [NH2RR'][Cr7MF8(O2CtBu)16] with M = MnII, FeII, CoII, NiII, CuII, ZnII, CdII. Our results show that their stability can be tuned both by altering the d-metal composition in the macrocycle and by the end groups of the secondary ammonium cation [NH2RR']+. Ion mobility probes the conformational landscape of the disassembly process from intact complex to structurally distinct isobaric fragments, providing unique insights to how a given divalent metal tunes the structural dynamics.
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Affiliation(s)
- Niklas Geue
- Michael Barber Centre for Collaborative Mass Spectrometry, Department of Chemistry, Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, ManchesterM1 7DN, U.K
| | - Tom S Bennett
- Department of Chemistry, The University of Manchester, Oxford Road, ManchesterM13 9PL, U.K
| | | | - Lennart A I Ramakers
- Michael Barber Centre for Collaborative Mass Spectrometry, Department of Chemistry, Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, ManchesterM1 7DN, U.K
| | - George F S Whitehead
- Department of Chemistry, The University of Manchester, Oxford Road, ManchesterM13 9PL, U.K
| | - Grigore A Timco
- Department of Chemistry, The University of Manchester, Oxford Road, ManchesterM13 9PL, U.K
| | - P B Armentrout
- Department of Chemistry, University of Utah, Salt Lake City, Utah84112, United States
| | - Eric J L McInnes
- Department of Chemistry, The University of Manchester, Oxford Road, ManchesterM13 9PL, U.K
| | - Neil A Burton
- Department of Chemistry, The University of Manchester, Oxford Road, ManchesterM13 9PL, U.K
| | - Richard E P Winpenny
- Department of Chemistry, The University of Manchester, Oxford Road, ManchesterM13 9PL, U.K
| | - Perdita E Barran
- Michael Barber Centre for Collaborative Mass Spectrometry, Department of Chemistry, Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, ManchesterM1 7DN, U.K
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16
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Rogers CJ, Asthana D, Brookfield A, Chiesa A, Timco GA, Collison D, Natrajan LS, Carretta S, Winpenny REP, Bowen AM. Modelling Conformational Flexibility in a Spectrally Addressable Molecular Multi‐Qubit Model System. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ciarán J. Rogers
- National Research Facility for Electron Paramagnetic Resonance Spectroscopy Department of Chemistry and Photon Science Institute The University of Manchester Oxford Road Manchester M13 9PL UK
| | - Deepak Asthana
- National Research Facility for Electron Paramagnetic Resonance Spectroscopy Department of Chemistry and Photon Science Institute The University of Manchester Oxford Road Manchester M13 9PL UK
- Department of Chemistry Ashoka University Sonipat Haryana India
| | - Adam Brookfield
- National Research Facility for Electron Paramagnetic Resonance Spectroscopy Department of Chemistry and Photon Science Institute The University of Manchester Oxford Road Manchester M13 9PL UK
| | - Alessandro Chiesa
- Dipartimento di Scienze Matematiche Fisiche e Informatiche Università di Parma 43124 Parma Italy
- INFN–Sezione di Milano-Bicocca Gruppo Collegato di Parma I-43124 Parma Italy
- UdR Parma INSTM I-43124 Parma Italy
| | - Grigore A. Timco
- National Research Facility for Electron Paramagnetic Resonance Spectroscopy Department of Chemistry and Photon Science Institute The University of Manchester Oxford Road Manchester M13 9PL UK
| | - David Collison
- National Research Facility for Electron Paramagnetic Resonance Spectroscopy Department of Chemistry and Photon Science Institute The University of Manchester Oxford Road Manchester M13 9PL UK
| | - Louise S. Natrajan
- National Research Facility for Electron Paramagnetic Resonance Spectroscopy Department of Chemistry and Photon Science Institute The University of Manchester Oxford Road Manchester M13 9PL UK
| | - Stefano Carretta
- Dipartimento di Scienze Matematiche Fisiche e Informatiche Università di Parma 43124 Parma Italy
- INFN–Sezione di Milano-Bicocca Gruppo Collegato di Parma I-43124 Parma Italy
- UdR Parma INSTM I-43124 Parma Italy
| | - Richard E. P. Winpenny
- National Research Facility for Electron Paramagnetic Resonance Spectroscopy Department of Chemistry and Photon Science Institute The University of Manchester Oxford Road Manchester M13 9PL UK
| | - Alice M. Bowen
- National Research Facility for Electron Paramagnetic Resonance Spectroscopy Department of Chemistry and Photon Science Institute The University of Manchester Oxford Road Manchester M13 9PL UK
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17
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Rogers CJ, Asthana D, Brookfield A, Chiesa A, Timco GA, Collison D, Natrajan LS, Carretta S, Winpenny REP, Bowen AM. Modelling Conformational Flexibility in a Spectrally Addressable Molecular Multi-Qubit Model System. Angew Chem Int Ed Engl 2022; 61:e202207947. [PMID: 36222278 PMCID: PMC9828767 DOI: 10.1002/anie.202207947] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Indexed: 11/11/2022]
Abstract
Dipolar coupled multi-spin systems have the potential to be used as molecular qubits. Herein we report the synthesis of a molecular multi-qubit model system with three individually addressable, weakly interacting, spin 1 / 2 ${{ 1/2 }}$ centres of differing g-values. We use pulsed Electron Paramagnetic Resonance (EPR) techniques to characterise and separately address the individual electron spin qubits; CuII , Cr7 Ni ring and a nitroxide, to determine the strength of the inter-qubit dipolar interaction. Orientation selective Relaxation-Induced Dipolar Modulation Enhancement (os-RIDME) detecting across the CuII spectrum revealed a strongly correlated CuII -Cr7 Ni ring relationship; detecting on the nitroxide resonance measured both the nitroxide and CuII or nitroxide and Cr7 Ni ring correlations, with switchability of the interaction based on differing relaxation dynamics, indicating a handle for implementing EPR-based quantum information processing (QIP) algorithms.
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Affiliation(s)
- Ciarán J. Rogers
- National Research Facility for Electron Paramagnetic Resonance SpectroscopyDepartment of Chemistry and Photon Science InstituteThe University of ManchesterOxford RoadManchesterM13 9PLUK
| | - Deepak Asthana
- National Research Facility for Electron Paramagnetic Resonance SpectroscopyDepartment of Chemistry and Photon Science InstituteThe University of ManchesterOxford RoadManchesterM13 9PLUK,Department of ChemistryAshoka UniversitySonipatHaryanaIndia
| | - Adam Brookfield
- National Research Facility for Electron Paramagnetic Resonance SpectroscopyDepartment of Chemistry and Photon Science InstituteThe University of ManchesterOxford RoadManchesterM13 9PLUK
| | - Alessandro Chiesa
- Dipartimento di Scienze Matematiche Fisiche e InformaticheUniversità di Parma43124ParmaItaly,INFN–Sezione di Milano-BicoccaGruppo Collegato di ParmaI-43124ParmaItaly,UdR ParmaINSTMI-43124ParmaItaly
| | - Grigore A. Timco
- National Research Facility for Electron Paramagnetic Resonance SpectroscopyDepartment of Chemistry and Photon Science InstituteThe University of ManchesterOxford RoadManchesterM13 9PLUK
| | - David Collison
- National Research Facility for Electron Paramagnetic Resonance SpectroscopyDepartment of Chemistry and Photon Science InstituteThe University of ManchesterOxford RoadManchesterM13 9PLUK
| | - Louise S. Natrajan
- National Research Facility for Electron Paramagnetic Resonance SpectroscopyDepartment of Chemistry and Photon Science InstituteThe University of ManchesterOxford RoadManchesterM13 9PLUK
| | - Stefano Carretta
- Dipartimento di Scienze Matematiche Fisiche e InformaticheUniversità di Parma43124ParmaItaly,INFN–Sezione di Milano-BicoccaGruppo Collegato di ParmaI-43124ParmaItaly,UdR ParmaINSTMI-43124ParmaItaly
| | - Richard E. P. Winpenny
- National Research Facility for Electron Paramagnetic Resonance SpectroscopyDepartment of Chemistry and Photon Science InstituteThe University of ManchesterOxford RoadManchesterM13 9PLUK
| | - Alice M. Bowen
- National Research Facility for Electron Paramagnetic Resonance SpectroscopyDepartment of Chemistry and Photon Science InstituteThe University of ManchesterOxford RoadManchesterM13 9PLUK
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18
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Oxalato as polyatomic coordination center and magnetic coupler in copper(II)-polypyrazole inverse polynuclear complexes and coordination polymers. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214730] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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19
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López-García C, Canossa S, Hadermann J, Gorni G, Oropeza FE, de la Peña O'Shea VA, Iglesias M, Angeles Monge M, Gutiérrez-Puebla E, Gándara F. Heterometallic Molecular Complexes Act as Messenger Building Units to Encode Desired Metal-Atom Combinations to Multivariate Metal-Organic Frameworks. J Am Chem Soc 2022; 144:16262-16266. [PMID: 35960870 PMCID: PMC9479064 DOI: 10.1021/jacs.2c06142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A novel synthetic approach is described for the targeted preparation of multivariate metal-organic frameworks (MTV-MOFs) with specific combinations of metal elements. This methodology is based on the use of molecular complexes that already comprise desired metal-atom combinations, as building units for the MTV-MOF synthesis. These units are transformed into the MOF structural constituents through a ligand/linker exchange process that involves structural modifications while preserving their originally encoded atomic combination. Thus, through the use of heterometallic ring-shaped molecules combining gallium and nickel or cobalt, we have obtained MOFs with identical combinations of the metal elements, now incorporated in the rod-shaped secondary building unit, as confirmed with a combination of X-ray and electron diffraction, electron microscopy, and X-ray absorption spectroscopy techniques.
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Affiliation(s)
- Clara López-García
- Materials Science Institute of Madrid - Spanish National Research Council (ICMM-CSIC), Calle Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain
| | - Stefano Canossa
- EMAT, Department of Physics, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Joke Hadermann
- EMAT, Department of Physics, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Giulio Gorni
- CELLS-ALBA Synchrotron, carrer de la Llum 2-26, 08290, Cerdanyola del Vallès, Barcelona Spain
| | - Freddy E Oropeza
- Photoactivated Processes Unit IMDEA Energy Institute, Móstoles Technology Park, Avenida Ramón de la Sagra 3, Móstoles, Madrid 28935, Spain
| | - Víctor A de la Peña O'Shea
- Photoactivated Processes Unit IMDEA Energy Institute, Móstoles Technology Park, Avenida Ramón de la Sagra 3, Móstoles, Madrid 28935, Spain
| | - Marta Iglesias
- Materials Science Institute of Madrid - Spanish National Research Council (ICMM-CSIC), Calle Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain
| | - M Angeles Monge
- Materials Science Institute of Madrid - Spanish National Research Council (ICMM-CSIC), Calle Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain
| | - Enrique Gutiérrez-Puebla
- Materials Science Institute of Madrid - Spanish National Research Council (ICMM-CSIC), Calle Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain
| | - Felipe Gándara
- Materials Science Institute of Madrid - Spanish National Research Council (ICMM-CSIC), Calle Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain
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20
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Zhang HL, Zhai YQ, Nojiri H, Schröder C, Hsu HK, Chan YT, Fu Z, Zheng YZ. {Sc nGd n} Heterometallic Rings: Tunable Ring Topology for Spin-Wave Excitations. J Am Chem Soc 2022; 144:15193-15202. [PMID: 35926139 DOI: 10.1021/jacs.2c05421] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Data carriers using spin waves in spintronic and magnonic logic devices offer operation at low power consumption and free of Joule heating yet requiring noncollinear spin structures of small sizes. Heterometallic rings can provide such an opportunity due to the controlled spin-wave transmission within such a confined space. Here, we present a series of {ScnGdn} (n = 4, 6, 8) heterometallic rings, which are the first Sc-Ln clusters to date, with tunable magnetic interactions for spin-wave excitations. By means of time- and temperature-dependent spin dynamics simulations, we are able to predict distinct spin-wave excitations at finite temperatures for Sc4Gd4, Sc6Gd6, and Sc8Gd8. Such a new model is previously unexploited, especially due to the interplay of antiferromagnetic exchange, dipole-dipole interaction, and ring topology at low temperatures, rendering the importance of the latter to spin-wave excitations.
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Affiliation(s)
- Hao-Lan Zhang
- Frontier Institute of Science and Technology (FIST), State Key Laboratory of Mechanical Behavior for Materials, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy and Materials Chemistry, School of Chemistry and School of Physics, Xi'an Jiaotong University, Xi'an 710054, Shaanxi, China
| | - Yuan-Qi Zhai
- Frontier Institute of Science and Technology (FIST), State Key Laboratory of Mechanical Behavior for Materials, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy and Materials Chemistry, School of Chemistry and School of Physics, Xi'an Jiaotong University, Xi'an 710054, Shaanxi, China
| | - Hiroyuki Nojiri
- Institute for Materials Research (IMR), Tohoku University, Katahira, Sendai 980-8577, Japan
| | - Christian Schröder
- Bielefeld Institute for Applied Materials Research, Bielefeld University of Applied Sciences, Bielefeld D-33619, Germany.,Faculty of Physics, Bielefeld University, Bielefeld D-33615, Germany
| | - Hung-Kai Hsu
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Yi-Tsu Chan
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Zhendong Fu
- Neutron Platform, Songshan Lake Materials Laboratory, Dongguan 523808, China
| | - Yan-Zhen Zheng
- Frontier Institute of Science and Technology (FIST), State Key Laboratory of Mechanical Behavior for Materials, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy and Materials Chemistry, School of Chemistry and School of Physics, Xi'an Jiaotong University, Xi'an 710054, Shaanxi, China
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21
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Rubín J, Arauzo A, Bartolomé E, Sedona F, Rancan M, Armelao L, Luzón J, Guidi T, Garlatti E, Wilhelm F, Rogalev A, Amann A, Spagna S, Bartolomé J, Bartolomé F. Origin of the Unusual Ground-State Spin S = 9 in a Cr 10 Single-Molecule Magnet. J Am Chem Soc 2022; 144:12520-12535. [PMID: 35759747 PMCID: PMC9979690 DOI: 10.1021/jacs.2c05453] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The molecular wheel [Cr10(OMe)20(O2CCMe3)10], abbreviated {Cr10}, with an unusual intermediate total spin S = 9 and non-negligible cluster anisotropy, D/kB = -0.045(2) K, is a rare case among wheels based on an even number of 3d-metals, which usually present an antiferromagnetic (AF) ground state (S = 0). Herein, we unveil the origin of such a behavior. Angular magnetometry measurements performed on a single crystal confirmed the axial anisotropic behavior of {Cr10}. For powder samples, the temperature dependence of the susceptibility plotted as χT(T) showed an overall ferromagnetic (FM) behavior down to 1.8 K, whereas the magnetization curve M(H) did not saturate at the expected 30 μB/fu for 10 FM coupled 3/2 spin Cr3+ ions, but to a much lower value, corresponding to S = 9. In addition, the X-ray magnetic circular dichroism (XMCD) measured at high magnetic field (170 kOe) and 7.5 K showed the polarization of the cluster moment up to 23 μB/fu. The magnetic results can be rationalized within a model, including the cluster anisotropy, in which the {Cr10} wheel is formed by two semiwheels, each with four Cr3+ spins FM coupled (JFM/kB = 2.0 K), separated by two Cr3+ ions AF coupled asymmetrically (J23/kB = J78/kB = -2.0 K; J34/kB = J89/kB = -0.25 K). Inelastic neutron scattering and heat capacity allowed us to confirm this model leading to the S = 9 ground state and first excited S = 8. Single-molecule magnet behavior with an activation energy of U/kB = 4.0(5) K in the absence of applied field was observed through ac susceptibility measurements down to 0.1 K. The intriguing magnetic behavior of {Cr10} arises from the detailed asymmetry in the molecule interactions produced by small-angle distortions in the angles of the Cr-O-Cr alkoxy bridges coupling the Cr3+ ions, as demonstrated by ab initio and density functional theory calculations, while the cluster anisotropy can be correlated to the single-ion anisotropies calculated for each Cr3+ ion in the wheel.
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Affiliation(s)
- Javier Rubín
- Instituto
de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain,Departamento
de Ciencia y Tecnología de Materiales y Fluidos, Universidad de Zaragoza, 50018 Zaragoza, Spain,
| | - Ana Arauzo
- Instituto
de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain,Servicio
de Medidas Físicas, Universidad de
Zaragoza, Pedro Cerbuna
12, 50009 Zaragoza, Spain,Departamento
de Física de la Materia Condensada, Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - Elena Bartolomé
- Escola
Universitària Salesiana de Sarrià (EUSS), Passeig Sant Joan Bosco 74, 08017 Barcelona, Spain,
| | - Francesco Sedona
- Dipartimento
di Scienze Chimiche, Università di
Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Marzio Rancan
- Institute
of Condensed Matter Chemistry and Technologies for Energy (ICMATE),
National Research Council (CNR), c/o Department of Chemistry, University of Padova, via F. Marzolo 1, 35131 Padova, Italy
| | - Lidia Armelao
- Dipartimento
di Scienze Chimiche, Università di
Padova, Via Marzolo 1, 35131 Padova, Italy,Department
of Chemical Sciences and Materials Technologies (DSCTM), National Research Council (CNR), Piazzale A. Moro 7, 00185 Roma, Italy
| | - Javier Luzón
- Academia
General Militar, Centro Universitario de
la Defensa, 50090 Zaragoza, Spain
| | - Tatiana Guidi
- Physics
Division, School of Science and Technology, University of Camerino, Via Madonna delle Carceri 9, 62032 Camerino, MC, Italy,ISIS
Facility, Rutherford Appleton Laboratory, Chilton, Didcot OX11 0QX, Oxfordshire, U.K.
| | - Elena Garlatti
- Dipartimento
di Science Matematiche, Fisiche e Informatiche, Università di Parma, Parco Area delle Scienze 7/A, 43124 Parma, Italy
| | - Fabrice Wilhelm
- ESRF − The European Synchrotron Radiation Facility, 71 Avenue des Martyrs CS40220, F-38043 Grenoble Cedex 09, France
| | - Andrei Rogalev
- ESRF − The European Synchrotron Radiation Facility, 71 Avenue des Martyrs CS40220, F-38043 Grenoble Cedex 09, France
| | - Andreas Amann
- Quantum Design Inc., San Diego, California 92121, United States
| | - Stefano Spagna
- Quantum Design Inc., San Diego, California 92121, United States
| | - Juan Bartolomé
- Instituto
de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain,Departamento
de Física de la Materia Condensada, Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - Fernando Bartolomé
- Instituto
de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain,Departamento
de Física de la Materia Condensada, Universidad de Zaragoza, 50009 Zaragoza, Spain,
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22
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Asthana D, Thomas D, Lockyer SJ, Brookfield A, Timco GA, Vitorica-Yrezabal IJ, Whitehead GFS, McInnes EJL, Collison D, Leigh DA, Winpenny REP. Decorating polymer beads with 10 14 inorganic-organic [2]rotaxanes as shown by spin counting. Commun Chem 2022; 5:73. [PMID: 36697699 PMCID: PMC9814693 DOI: 10.1038/s42004-022-00689-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 05/27/2022] [Indexed: 01/28/2023] Open
Abstract
Polymer beads have been used as the core of magnetic particles for around twenty years. Here we report studies to attach polymetallic complexes to polymer beads for the first time, producing beads of around 115 microns diameter that are attached to 1014 hybrid inorganic-organic [2]rotaxanes. The bead is then formally a [1014] rotaxane. The number of complexes attached is counted by EPR spectroscopy after including TEMPO radicals within the thread of the hybrid [2]rotaxanes.
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Affiliation(s)
- Deepak Asthana
- grid.5379.80000000121662407Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9Pl UK ,grid.449178.70000 0004 5894 7096Department of Chemistry, Ashoka University, Sonipat, Haryana India
| | - Dean Thomas
- grid.5379.80000000121662407Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9Pl UK
| | - Selena J. Lockyer
- grid.5379.80000000121662407Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9Pl UK
| | - Adam Brookfield
- grid.5379.80000000121662407Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9Pl UK
| | - Grigore A. Timco
- grid.5379.80000000121662407Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9Pl UK
| | - Iñigo J. Vitorica-Yrezabal
- grid.5379.80000000121662407Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9Pl UK
| | - George F. S. Whitehead
- grid.5379.80000000121662407Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9Pl UK
| | - Eric J. L. McInnes
- grid.5379.80000000121662407Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9Pl UK
| | - David Collison
- grid.5379.80000000121662407Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9Pl UK
| | - David A. Leigh
- grid.5379.80000000121662407Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9Pl UK
| | - Richard E. P. Winpenny
- grid.5379.80000000121662407Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9Pl UK
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23
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Amdur MJ, Mullin KR, Waters MJ, Puggioni D, Wojnar MK, Gu M, Sun L, Oyala PH, Rondinelli JM, Freedman DE. Chemical control of spin-lattice relaxation to discover a room temperature molecular qubit. Chem Sci 2022; 13:7034-7045. [PMID: 35774181 PMCID: PMC9200133 DOI: 10.1039/d1sc06130e] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Accepted: 05/16/2022] [Indexed: 11/21/2022] Open
Abstract
The second quantum revolution harnesses exquisite quantum control for a slate of diverse applications including sensing, communication, and computation. Of the many candidates for building quantum systems, molecules offer both tunability and specificity, but the principles to enable high temperature operation are not well established. Spin-lattice relaxation, represented by the time constant T 1, is the primary factor dictating the high temperature performance of quantum bits (qubits), and serves as the upper limit on qubit coherence times (T 2). For molecular qubits at elevated temperatures (>100 K), molecular vibrations facilitate rapid spin-lattice relaxation which limits T 2 to well below operational minimums for certain quantum technologies. Here we identify the effects of controlling orbital angular momentum through metal coordination geometry and ligand rigidity via π-conjugation on T 1 relaxation in three four-coordinate Cu2+ S = ½ qubit candidates: bis(N,N'-dimethyl-4-amino-3-penten-2-imine) copper(ii) (Me2Nac)2 (1), bis(acetylacetone)ethylenediamine copper(ii) Cu(acacen) (2), and tetramethyltetraazaannulene copper(ii) Cu(tmtaa) (3). We obtain significant T 1 improvement upon changing from tetrahedral to square planar geometries through changes in orbital angular momentum. T 1 is further improved with greater π-conjugation in the ligand framework. Our electronic structure calculations reveal that the reduced motion of low energy vibrations in the primary coordination sphere slows relaxation and increases T 1. These principles enable us to report a new molecular qubit candidate with room temperature T 2 = 0.43 μs, and establishes guidelines for designing novel qubit candidates operating above 100 K.
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Affiliation(s)
- M Jeremy Amdur
- Department of Chemistry, Massachusetts Institute of Technology Cambridge Massachusetts 02139 USA
| | - Kathleen R Mullin
- Department of Materials Science and Engineering, Northwestern University Evanston Illinois 60208 USA
| | - Michael J Waters
- Department of Materials Science and Engineering, Northwestern University Evanston Illinois 60208 USA
| | - Danilo Puggioni
- Department of Materials Science and Engineering, Northwestern University Evanston Illinois 60208 USA
| | - Michael K Wojnar
- Department of Chemistry, Massachusetts Institute of Technology Cambridge Massachusetts 02139 USA
| | - Mingqiang Gu
- Department of Materials Science and Engineering, Northwestern University Evanston Illinois 60208 USA
| | - Lei Sun
- Center for Nanoscale Materials, Argonne National Laboratory Argonne Illinois 60439 USA
| | - Paul H Oyala
- Division of Chemistry and Chemical Engineering, California Institute of Technology Pasadena California 91125 USA
| | - James M Rondinelli
- Department of Materials Science and Engineering, Northwestern University Evanston Illinois 60208 USA
| | - Danna E Freedman
- Department of Chemistry, Massachusetts Institute of Technology Cambridge Massachusetts 02139 USA .,Department of Chemistry, Northwestern University Evanston Illinois 60208 USA
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24
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Timco G, Pritchard R, Whitehead G, Winpenny R. New Homometallic Octanuclear Chromium(III) Rings. CHEMISTRY JOURNAL OF MOLDOVA 2022. [DOI: 10.19261/cjm.2022.928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Four new {Cr8} rings have been synthesized and characterized; they are all based on the classic [CrF(O2CtBu)2]8 ring 1. Three routes have been studied. The first is direct synthesis, by reacting hydrated chromium(III) fluorides with the acid; this has been used to produce LS[CrF(O2CEt)2]8 3. The second route uses 3 as a precursor and substitute with an incoming carboxylate. This has been used to make [CrF(O2CCCl3)2]8 4 and [CrF(O2CC6F5)2]8 5. The third route uses LSN-ethyl-D-glucamine (H5Etglu) as a template and produces chiral rings [Cr8F4(Etglu)(O2CtBu)15] 6. The single crystal X-ray structures of these new compounds are reported.
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25
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Chong J, Besnard C, Cruz CM, Piguet C, Jiménez JR. Heteroleptic mer-[Cr(N ∩N ∩N)(CN) 3] complexes: synthetic challenge, structural characterization and photophysical properties. Dalton Trans 2022; 51:4297-4309. [PMID: 35195140 PMCID: PMC8922558 DOI: 10.1039/d2dt00126h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The substitution of three water molecules around trivalent chromium in CrBr3·6H2O with the tridentate 2,2′:6′,2′′-terpyridine (tpy), N,N′-dimethyl-N,N′-di(pyridine-2-yl)pyridine-2,6-diamine (ddpd) or 2,6-di(quinolin-8-yl)pyridine (dqp) ligands gives the heteroleptic mer-[Cr(L)Br3] complexes. Stepwise treatments with Ag(CF3SO3) and KCN under microwave irradiations provide mer-[Cr(L)(CN)3] in moderate yields. According to their X-ray crystal structures, the associated six-coordinate meridional [CrN3C3] chromophores increasingly deviate from a pseudo-octahedral arrangement according to L = ddpd ≈ dpq ≪ tpy; a trend in line with the replacement of six-membered with five-membered chelate rings around CrIII. Room-temperature ligand-centered UV-excitation at 18 170 cm−1 (λexc = 350 nm), followed by energy transfer and intersystem crossing eventually yield microsecond metal-centered Cr(2E → 4A2) phosphorescence in the red to near infrared domain 13 150–12 650 cm−1 (760 ≤ λem ≤ 790 nm). Decreasing the temperature to liquid nitrogen (77 K) extends the emission lifetimes to reach the millisecond regime with a record of 4.02 ms for mer-[Cr(dqp)(CN)3] in frozen acetonitrile. The heteroleptic mer-[Cr(L)(CN)3] (L = tpy, ddpd, dqp) complexes with their C2v-symmetrical [CrC3N3] luminescent chromophores represent the missing links between pseudo-octahedral [CrN6] and [CrC6] units found in their well-known homoleptic parents.![]()
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Affiliation(s)
- Julien Chong
- Department of Inorganic and Analytical Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland.
| | - Céline Besnard
- Laboratory of Crystallography, University of Geneva, 24 quai E. Ansermet, CH-1211 Geneva 4, Switzerland
| | - Carlos M Cruz
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Claude Piguet
- Department of Inorganic and Analytical Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland.
| | - Juan-Ramón Jiménez
- Department of Inorganic and Analytical Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland. .,Department of Inorganic Chemistry, University of Granada and "Unidad de Excelencia en Química" (UEQ), Avda. Fuentenueva, E-18071 Granada, España.
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26
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Rabelo R, Castellano M, Barros WP, Carbonell-Vilar JM, Viciano-Chumillas M, Lloret F, Julve M, Pasán J, Cañadillas-Delgado L, Ruiz-García R, Cano J. Molecular engineering of an inverse hexacopper(II) coordination complex with a photoactive metallacyclophane centroligand as prototype of a magnetic photoswitch†. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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27
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Börner M, Klose J, Gutierrez Suburu ME, Strassert CA, Yang F, Monakhov KY, Abel B, Kersting B. Synthesis and Characterisation of Luminescent [Cr III 2 L(μ-carboxylato)] 3+ Complexes with High-Spin S=3 Ground States (L=N 6 S 2 donor ligand). Chemistry 2021; 27:14899-14910. [PMID: 34490947 PMCID: PMC8596867 DOI: 10.1002/chem.202102079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Indexed: 01/02/2023]
Abstract
The synthesis, structure, magnetic, and photophysical properties of two dinuclear, luminescent, mixed-ligand [CrIII 2 L(O2 CR)]3+ complexes (R=CH3 (1), Ph (2)) of a 24-membered binucleating hexa-aza-dithiophenolate macrocycle (L)2- are presented. X-ray crystallographic analysis reveals an edge-sharing bioctahedral N3 Cr(μ-SR)2 (μ1,3 -O2 CR)CrN3 core structure with μ1,3 -bridging carboxylate groups. A ferromagnetic superexchange interaction between the electron spins of the Cr3+ ions leads to a high-spin (S=3) ground state. The coupling constants (J=+24.2(1) cm-1 (1), +34.8(4) cm-1 (2), H=-2JS1 S2 ) are significantly larger than in related bis-μ-alkoxido-μ-carboxylato structures. DFT calculations performed on both complexes reproduce both the sign and strength of the exchange interactions found experimentally. Frozen methanol-dichloromethane 1 : 1 solutions of 1 and 2 luminesce at 750 nm when excited into the 4 LMCT state on the 4 A2 → 2 T1 (ν2 ) bands (λexc =405 nm). The absolute quantum yields (ΦL ) for 1 and 2 were found to be strongly temperature dependent. At 77 K in frozen MeOH/CH2 Cl2 glasses, ΦL =0.44±0.02 (for 1), ΦL =0.45±0.02 (for 2).
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Affiliation(s)
- Martin Börner
- Institut für Anorganische ChemieUniversität LeipzigJohannisallee 2904103LeipzigGermany
- Leibniz Institut für OberflächenmodifizierungPermoserstraße 1504318LeipzigGermany
| | - Jennifer Klose
- Institut für Anorganische ChemieUniversität LeipzigJohannisallee 2904103LeipzigGermany
| | - Matias E. Gutierrez Suburu
- Institut für Anorganische und Analytische ChemieCiMICSoNWestfälische Wilhelms-Universität MünsterCorrensstraße 28/3048149MünsterGermany
- CeNTechWestfälische Wilhelms-Universität MünsterHeisenbergstraße 1148149MünsterGermany
| | - Cristian A. Strassert
- Institut für Anorganische und Analytische ChemieCiMICSoNWestfälische Wilhelms-Universität MünsterCorrensstraße 28/3048149MünsterGermany
- CeNTechWestfälische Wilhelms-Universität MünsterHeisenbergstraße 1148149MünsterGermany
| | - Fangshun Yang
- Leibniz Institut für OberflächenmodifizierungPermoserstraße 1504318LeipzigGermany
| | - Kirill Yu. Monakhov
- Leibniz Institut für OberflächenmodifizierungPermoserstraße 1504318LeipzigGermany
| | - Bernd Abel
- Leibniz Institut für OberflächenmodifizierungPermoserstraße 1504318LeipzigGermany
- Wilhelm-Ostwald-Institut für Physikalische und Theoretische ChemieUniversität LeipzigLinnéstrasse 204103LeipzigGermany
| | - Berthold Kersting
- Institut für Anorganische ChemieUniversität LeipzigJohannisallee 2904103LeipzigGermany
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28
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Alotaibi R, Little E, Fowler JM, Brookfield A, Adams RW, Achari A, Timco GA, Whitehead GFS, Chilton NF, Nair RR, Collison D, Winpenny REP. Single Isomer Heterometallic {Cr III6M II2} Rings Templated by Tetramethylammonium. Inorg Chem 2021; 60:15675-15685. [PMID: 34613713 DOI: 10.1021/acs.inorgchem.1c02342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A family of heterometallic rings [Me4N]2[CrIII6MII2F8(O2CtBu)16] is reported using tetramethylammonium hydroxide pentahydrate as the source of a template, where M = Zn, Mn, Ni, and Co. The metal cores are octagons with metal-metal edges bridged by one fluoride and two carboxylate ligands. The divalent metal ions are found ordered at positions 1 and 5 in the octagon. The tetramethylammonium cations are above and below the metal plane of the ring in the crystal structure. Magnetic studies show antiferromagnetic coupling between the paramagnetic metal ions present, leading to paramagnetic ground states in each case. 1H NMR spectroscopy confirms that the structure of the {CrIII6CoII2} ring exists in solution, and electron paramagnetic resonance spectroscopy confirms the magnetic structure of the other three rings.
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Affiliation(s)
- Rajeh Alotaibi
- Department of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Edmund Little
- Department of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Jonathan M Fowler
- Department of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Adam Brookfield
- Department of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Ralph W Adams
- Department of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Amritroop Achari
- Department of Physics and Astronomy and National Graphene Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Grigore A Timco
- Department of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - George F S Whitehead
- Department of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Nicholas F Chilton
- Department of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Rahul R Nair
- Department of Physics and Astronomy and National Graphene Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - David Collison
- Department of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Richard E P Winpenny
- Department of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K
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29
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Liu C, Gao C, Said A, Niu H, Wang D, Tung CH, Wang Y. Assembly of Interlocked Superstructures with a Titanium Oxide Molecular Ring in Water. Inorg Chem 2021; 60:14520-14524. [PMID: 34550686 DOI: 10.1021/acs.inorgchem.1c01874] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
[2]Catenane, [2]rotaxane, and [2]pseudorotaxane based on a cyclic titanium oxide cluster, [Ti8O8(SO4)16]16- (Ti8), and cyclic/linear alkylammonium cations are reported. Their syntheses, structures, spectroscopy, and stability in water were studied. These molecules were synthesized from and remained intact upon redissolution in acidic water. Hence, the cluster Ti8 is a promising metal oxide ring that can be used as an inorganic analogue of crown ether to assemble inorganic-organic hybrid mechanical interlocked supramolecular assemblies in water.
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Affiliation(s)
- Caiyun Liu
- Key Laboratory for Colloid and Interface Science, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Chang Gao
- Key Laboratory for Colloid and Interface Science, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Amir Said
- Key Laboratory for Colloid and Interface Science, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Huihui Niu
- Key Laboratory for Colloid and Interface Science, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Dexin Wang
- Key Laboratory for Colloid and Interface Science, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Chen-Ho Tung
- Key Laboratory for Colloid and Interface Science, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Yifeng Wang
- Key Laboratory for Colloid and Interface Science, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China.,State Key Laboratory of Crystal Materials, Shandong University, Shanda South Road 27, Jinan 250100, China
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30
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Yambulatov DS, Nikolaevskii SA, Shmelev MA, Babeshkin KA, Korchagin DV, Efimov NN, Goloveshkin AS, Petrov PA, Kiskin MA, Sokolov MN, Eremenko IL. Heterometallic Coii-Lii carboxylate complexes with N-heterocyclic carbene, triphenylphosphine and pyridine: a comparative study of magnetic properties. MENDELEEV COMMUNICATIONS 2021. [DOI: 10.1016/j.mencom.2021.09.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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31
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Castro I, Calatayud ML, Orts-Arroyo M, Moliner N, Marino N, Lloret F, Ruiz-García R, Munno GD, Julve M. Ferro- and Antiferromagnetic Interactions in Oxalato-Centered Inverse Hexanuclear and Chain Copper(II) Complexes with Pyrazole Derivatives. Molecules 2021; 26:molecules26092792. [PMID: 34068482 PMCID: PMC8126003 DOI: 10.3390/molecules26092792] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 05/05/2021] [Accepted: 05/05/2021] [Indexed: 11/16/2022] Open
Abstract
Two novel copper(II) complexes of formulas {[Cu(4-Hmpz)4][Cu(4-Hmpz)2(µ3-ox-κ2O1,O2:κO2':κO1')(ClO4)2]}n (1) and {[Cu(3,4,5-Htmpz)4]2[Cu(3,4,5-Htmpz)2(µ3-ox-κ2O1,O2:κO2':κO1')(H2O)(ClO4)]2[Cu2(3,4,5-Htmpz)4(µ-ox-κ2O1,O2:κ2O2',O1')]}(ClO4)4·6H2O (2) have been obtained by using 4-methyl-1H-pyrazole (4-Hmpz) and 3,4,5-trimethyl-1H-pyrazole (3,4,5-Htmpz) as terminal ligands and oxalate (ox) as the polyatomic inverse coordination center. The crystal structure of 1 consists of perchlorate counteranions and cationic copper(II) chains with alternating bis(pyrazole)(µ3-κ2O1,O2:κO2':κO1'-oxalato)copper(II) and tetrakis(pyrazole)copper(II) fragments. The crystal structure of 2 is made up of perchlorate counteranions and cationic centrosymmetric hexanuclear complexes where an inner tetrakis(pyrazole)(µ-κ2O1,O2:κ2O2',O1'-oxalato)dicopper(II) entity and two outer mononuclear tetrakis(pyrazole)copper(II) units are linked through two mononuclear aquabis(pyrazole)(µ3-κ2O1,O2:κO2':κO1'-oxalato)copper(II) units. The magnetic properties of 1 and 2 were investigated in the temperature range 2.0-300 K. Very weak intrachain antiferromagnetic interactions between the copper(II) ions through the µ3-ox-κ2O1,O2:κO2':κO1' center occur in 1 [J = -0.42(1) cm-1, the spin Hamiltonian being defined as H = -J∑S1,i · S2,i+1], whereas very weak intramolecular ferromagnetic [J = +0.28(2) cm-1] and strong antiferromagnetic [J' = -348(2) cm-1] couplings coexist in 2 which are mediated by the µ3-ox-κ2O1,O2:κO2':κO1' and µ-ox-κ2O1,O2:κ2O2',O1' centers, respectively. The variation in the nature and magnitude of the magnetic coupling for this pair of oxalato-centered inverse copper(II) complexes is discussed in the light of their different structural features, and a comparison with related oxalato-centered inverse copper(II)-pyrazole systems from the literature is carried out.
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Affiliation(s)
- Isabel Castro
- Instituto de Ciencia Molecular (ICMol), Universitat de València, 46980 Paterna, Spain; (M.L.C.); (M.O.-A.); (N.M.); (F.L.); (R.R.-G.)
- Correspondence: (I.C.); (N.M.); (G.D.M.); (M.J.)
| | - M. Luisa Calatayud
- Instituto de Ciencia Molecular (ICMol), Universitat de València, 46980 Paterna, Spain; (M.L.C.); (M.O.-A.); (N.M.); (F.L.); (R.R.-G.)
| | - Marta Orts-Arroyo
- Instituto de Ciencia Molecular (ICMol), Universitat de València, 46980 Paterna, Spain; (M.L.C.); (M.O.-A.); (N.M.); (F.L.); (R.R.-G.)
| | - Nicolás Moliner
- Instituto de Ciencia Molecular (ICMol), Universitat de València, 46980 Paterna, Spain; (M.L.C.); (M.O.-A.); (N.M.); (F.L.); (R.R.-G.)
| | - Nadia Marino
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, 87036 Rende, Italy
- Correspondence: (I.C.); (N.M.); (G.D.M.); (M.J.)
| | - Francesc Lloret
- Instituto de Ciencia Molecular (ICMol), Universitat de València, 46980 Paterna, Spain; (M.L.C.); (M.O.-A.); (N.M.); (F.L.); (R.R.-G.)
| | - Rafael Ruiz-García
- Instituto de Ciencia Molecular (ICMol), Universitat de València, 46980 Paterna, Spain; (M.L.C.); (M.O.-A.); (N.M.); (F.L.); (R.R.-G.)
| | - Giovanni De Munno
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, 87036 Rende, Italy
- Correspondence: (I.C.); (N.M.); (G.D.M.); (M.J.)
| | - Miguel Julve
- Instituto de Ciencia Molecular (ICMol), Universitat de València, 46980 Paterna, Spain; (M.L.C.); (M.O.-A.); (N.M.); (F.L.); (R.R.-G.)
- Correspondence: (I.C.); (N.M.); (G.D.M.); (M.J.)
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Jiménez JR, Doistau B, Poncet M, Piguet C. Heteroleptic trivalent chromium in coordination chemistry: Novel building blocks for addressing old challenges in multimetallic luminescent complexes. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213750] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Alotaibi R, Fowler JM, Lockyer SJ, Timco GA, Collison D, Schnack J, Winpenny REP. The Synthesis and Characterisation of a Molecular Sea-Serpent: Studies of a {Cr 24 Cu 7 } Chain. Angew Chem Int Ed Engl 2021; 60:9489-9492. [PMID: 33576165 PMCID: PMC8251705 DOI: 10.1002/anie.202015731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Indexed: 11/06/2022]
Abstract
A finite chain of thirty-one paramagnetic centers is reported, synthesized by reaction of hydrated chromium fluoride, copper carbonate and pivalic acid in the presence of 1,4,7,10-tetrazacyclododecane (cyclen). Magnetic studies show predominantly anti-ferromagnetic exchange leading to a high density of low-lying spin states and large saturation field.
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Affiliation(s)
- Rajeh Alotaibi
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Jonathan M Fowler
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Selena J Lockyer
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Grigore A Timco
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - David Collison
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Jürgen Schnack
- Faculty of Physics, Bielefeld University, P.O. box 100131, 33501, Bielefeld, Germany
| | - Richard E P Winpenny
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
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Alotaibi R, Fowler JM, Lockyer SJ, Timco GA, Collison D, Schnack J, Winpenny REP. The Synthesis and Characterisation of a Molecular Sea‐Serpent: Studies of a {Cr
24
Cu
7
} Chain. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202015731] [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)
- Rajeh Alotaibi
- Department of Chemistry The University of Manchester Oxford Road Manchester M13 9PL UK
| | - Jonathan M. Fowler
- Department of Chemistry The University of Manchester Oxford Road Manchester M13 9PL UK
| | - Selena J. Lockyer
- Department of Chemistry The University of Manchester Oxford Road Manchester M13 9PL UK
| | - Grigore A. Timco
- Department of Chemistry The University of Manchester Oxford Road Manchester M13 9PL UK
| | - David Collison
- Department of Chemistry The University of Manchester Oxford Road Manchester M13 9PL UK
| | - Jürgen Schnack
- Faculty of Physics Bielefeld University P.O. box 100131 33501 Bielefeld Germany
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Miyake R, Suganuma E, Kimura S, Mori H, Okabayashi J, Kusamoto T. Cyclic Heterometallic Interactions formed from a Flexible Tripeptide Complex Showing Effective Antiferromagnetic Spin Coupling. Angew Chem Int Ed Engl 2021; 60:5179-5183. [PMID: 33207016 DOI: 10.1002/anie.202013373] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Indexed: 11/09/2022]
Abstract
Developing tunable motifs for heterometallic interactions should be beneficial for fabricating functional materials based on cooperative electronic communications between metal centers. Reported here is the efficient formation of cyclic heterometallic interactions from a complex containing an artificial tripeptide with metal binding sites on its main chain and side chains. X-ray structural analysis and X-ray absorption spectroscopy revealed that the cyclic metal-metal arrangements arise from the amide groups connecting four square-planar CuII centers and four octahedral NiII centers in a cyclic manner. UV/Vis spectral studies suggested that this efficient formation was achieved by the selective formation of the square-planar CuII centers and a crystallization process. Magnetic measurements using SQUID clarified that the cyclic complex represented the S=2 spin state at low temperatures due to effective antiferromagnetic interactions between the NiII and CuII centers.
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Affiliation(s)
- Ryosuke Miyake
- Department of Chemistry and Biochemistry, Graduate School of Humanities and Sciences, Ochanomizu University, 2-1-1, Otsuka, Bunkyo-ku, Tokyo, 112-8610, Japan.,JST-PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan
| | - Eri Suganuma
- Department of Chemistry and Biochemistry, Graduate School of Humanities and Sciences, Ochanomizu University, 2-1-1, Otsuka, Bunkyo-ku, Tokyo, 112-8610, Japan
| | - Shun Kimura
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.,Department of Life and Coordination-Complex Molecular Science, Institute for Molecular Science, 5-1 Higashiyama, Myodaiji, Okazaki, 444-8787, Japan
| | - Hirotoshi Mori
- Department of Applied Chemistry, Faculty of Science & Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-Ku, Tokyo, 112-8551, Japan
| | - Jun Okabayashi
- Research Center for Spectrochemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Tetsuro Kusamoto
- Department of Life and Coordination-Complex Molecular Science, Institute for Molecular Science, 5-1 Higashiyama, Myodaiji, Okazaki, 444-8787, Japan
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Miyake R, Suganuma E, Kimura S, Mori H, Okabayashi J, Kusamoto T. Cyclic Heterometallic Interactions formed from a Flexible Tripeptide Complex Showing Effective Antiferromagnetic Spin Coupling. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202013373] [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)
- Ryosuke Miyake
- Department of Chemistry and Biochemistry Graduate School of Humanities and Sciences Ochanomizu University 2-1-1, Otsuka, Bunkyo-ku Tokyo 112-8610 Japan
- JST-PRESTO 4-1-8 Honcho Kawaguchi Saitama 332-0012 Japan
| | - Eri Suganuma
- Department of Chemistry and Biochemistry Graduate School of Humanities and Sciences Ochanomizu University 2-1-1, Otsuka, Bunkyo-ku Tokyo 112-8610 Japan
| | - Shun Kimura
- Department of Chemistry Graduate School of Science The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
- Department of Life and Coordination-Complex Molecular Science Institute for Molecular Science 5-1 Higashiyama Myodaiji, Okazaki 444-8787 Japan
| | - Hirotoshi Mori
- Department of Applied Chemistry, Faculty of Science & Engineering Chuo University 1-13-27 Kasuga, Bunkyo-Ku Tokyo 112-8551 Japan
| | - Jun Okabayashi
- Research Center for Spectrochemistry Graduate School of Science The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Tetsuro Kusamoto
- Department of Life and Coordination-Complex Molecular Science Institute for Molecular Science 5-1 Higashiyama Myodaiji, Okazaki 444-8787 Japan
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37
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Facile and environmentally friendly one-step synthesis of hexanuclear Cu(II)–Ni(II) and Cu(II)–Co(II) clusters and their binding interactions with bovine serum albumin. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2020.121904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Melnikov SN, Evstifeev IS, Nikolaveskii SA, Ananyev IV, Varaksina EA, Taydakov IV, Goloveshkin AS, Sidorov AA, Kiskin MA, Eremenko IL. The effect of terminal N-donor aromatic ligands on the sensitization and emission of lanthanide ions in Zn 2Ln (Ln = Eu, Tb) complexes with 4-biphenylcarboxylate anions. NEW J CHEM 2021. [DOI: 10.1039/d0nj05994c] [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 systematic series of trinuclear carboxylate complexes [Zn2Ln(NO3)(phbz)6(L)2] (Ln = Eu, Gd, and Tb, where phbz is the anion of 4-biphenylcarboxylic acid, and L is pyridine, 2,3-lutidine or 2,2′-bipyridine) were synthesized. Luminescence properties were investigated in detail.
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Affiliation(s)
- Stanislav N. Melnikov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| | - Igor S. Evstifeev
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| | - Stanislav A. Nikolaveskii
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| | - Ivan V. Ananyev
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences
- Moscow
- Russian Federation
| | - Evgenia A. Varaksina
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences
- Moscow
- Russian Federation
- Lebedev Institute of Physics of the Russian Academy of Sciences
- 119991 Moscow
| | - Ilya V. Taydakov
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences
- Moscow
- Russian Federation
- Lebedev Institute of Physics of the Russian Academy of Sciences
- 119991 Moscow
| | - Alexander S. Goloveshkin
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences
- Moscow
- Russian Federation
| | - Aleksey A. Sidorov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| | - Mikhail A. Kiskin
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| | - Igor L. Eremenko
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
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When Molecular Magnetism Meets Supramolecular Chemistry: Multifunctional and Multiresponsive Dicopper(II) Metallacyclophanes as Proof-of-Concept for Single-Molecule Spintronics and Quantum Computing Technologies? MAGNETOCHEMISTRY 2020. [DOI: 10.3390/magnetochemistry6040069] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Molecular magnetism has made a long journey, from the fundamental studies on through-ligand electron exchange magnetic interactions in dinuclear metal complexes with extended organic bridges to the more recent exploration of their electron spin transport and quantum coherence properties. Such a field has witnessed a renaissance of dinuclear metallacyclic systems as new experimental and theoretical models for single-molecule spintronics and quantum computing, due to the intercrossing between molecular magnetism and metallosupramolecular chemistry. The present review reports a state-of-the-art overview as well as future perspectives on the use of oxamato-based dicopper(II) metallacyclophanes as promising candidates to make multifunctional and multiresponsive, single-molecule magnetic (nano)devices for the physical implementation of quantum information processing (QIP). They incorporate molecular magnetic couplers, transformers, and wires, controlling and facilitating the spin communication, as well as molecular magnetic rectifiers, transistors, and switches, exhibiting a bistable (ON/OFF) spin behavior under external stimuli (chemical, electronic, or photonic). Special focus is placed on the extensive research work done by Professor Francesc Lloret, an outstanding chemist, excellent teacher, best friend, and colleague, in recognition of his invaluable contributions to molecular magnetism on the occasion of his 65th birthday.
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Nikolaevskii SA, Yambulatov DS, Voronina JK, Melnikov SN, Babeshkin KA, Efimov NN, Goloveshkin AS, Kiskin MA, Sidorov AA, Eremenko IL. The First Example of 3 d‐4 f‐Heterometallic Carboxylate Complex Containing Phosphine Ligand. ChemistrySelect 2020. [DOI: 10.1002/slct.202002982] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Stanislav A. Nikolaevskii
- N. S. Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences Leninsky prosp. 31 119991 Moscow Russian Federation
| | - Dmitriy S. Yambulatov
- N. S. Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences Leninsky prosp. 31 119991 Moscow Russian Federation
| | - Julia K. Voronina
- N. S. Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences Leninsky prosp. 31 119991 Moscow Russian Federation
| | - Stanislav N. Melnikov
- N. S. Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences Leninsky prosp. 31 119991 Moscow Russian Federation
| | - Konstantin A. Babeshkin
- N. S. Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences Leninsky prosp. 31 119991 Moscow Russian Federation
| | - Nikolay N. Efimov
- N. S. Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences Leninsky prosp. 31 119991 Moscow Russian Federation
| | - Alexander S. Goloveshkin
- A. N. Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences Vavilova Str. 28 119991 Moscow Russian Federation
| | - Mikhail A. Kiskin
- N. S. Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences Leninsky prosp. 31 119991 Moscow Russian Federation
| | - Aleksey A. Sidorov
- N. S. Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences Leninsky prosp. 31 119991 Moscow Russian Federation
| | - Igor L. Eremenko
- N. S. Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences Leninsky prosp. 31 119991 Moscow Russian Federation
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Lewis AJ, Garlatti E, Cugini F, Solzi M, Zeller M, Carretta S, Zaleski CM. Slow Magnetic Relaxation of a 12-Metallacrown-4 Complex with a Manganese(III)–Copper(II) Heterometallic Ring Motif. Inorg Chem 2020; 59:11894-11900. [DOI: 10.1021/acs.inorgchem.0c01410] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Alex J. Lewis
- Department of Chemistry and Biochemistry, Shippensburg University, Shippensburg, Pennsylvania 17257, United States
| | - Elena Garlatti
- Dipartimento di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, 1-43124 Parma, Italy
- Udr Parma, INSTM, 1-43124 Parma, Italy
| | - Francesco Cugini
- Dipartimento di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, 1-43124 Parma, Italy
| | - Massimo Solzi
- Dipartimento di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, 1-43124 Parma, Italy
| | - Matthias Zeller
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Stefano Carretta
- Dipartimento di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, 1-43124 Parma, Italy
- Udr Parma, INSTM, 1-43124 Parma, Italy
| | - Curtis M. Zaleski
- Department of Chemistry and Biochemistry, Shippensburg University, Shippensburg, Pennsylvania 17257, United States
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Magott M, Sarewicz M, Buda S, Pinkowicz D. Heterotrimetallic Cyanide-Bridged 3d-4d-5d Frameworks Based on a Photomagnetic Secondary Building Unit. Inorg Chem 2020; 59:8925-8934. [PMID: 32510938 PMCID: PMC7588039 DOI: 10.1021/acs.inorgchem.0c00737] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
The rational design
of coordination frameworks combining more than two different metal
ions using a self-assembly approach is challenging because it rarely
offers sufficient control over the building blocks at the actual self-assembly
stage. In this work, we present a successful two-step strategy toward
heterotrimetallic coordination frameworks by employing a new bimetallic
[(NC)7MoIV-CN-PtIV(NH3)4-NC-MoIV(CN)7]4– secondary building unit (SBU). This anionic moiety has been isolated
and characterized as a simple salt with an organic dppipH22+ cation (dppipH2)2[(NC)7MoIV-CN-PtIV(NH3)4-NC-MoIV(CN)7]·15H2O (1)
(dppip = 1,4-di(4-pyridinyl)piperazine). The salt presents a
second-order phase transition related to cation conformational change
around 250 K and a photomagnetic effect after irradiation with 450
nm light at 10 K. When combined with aqueous solutions of MnII or CuII complexes, it forms either a one-dimensional
chain [MnII(dpop)][MnII(dpop)(H2O)][(NC)7MoIV-CN-PtIV(NH3)4-NC-MoIV(CN)7]·36H2O (2) (dpop = 2,13-dimethyl-3,6,9,12,18-pentaazabicyclo-[12.3.1]octadeca-1(18),2,12,14,16-pentaene)
or a photomagnetic two-dimensional honeycomb network [CuII(cyclam)]2[(NC)7MoIV-CN-PtIV(NH3)4-NC-MoIV(CN)7]·40.89H2O (3) (cyclam = 1,4,8,11-tetraazacyclotetradecane),
both characterized by very large cavities in their structure filled
with solvent molecules. Both 2 and 3 incorporate
three different transition-metal ions and constitute a new family
of 3d-4d-5d coordination frameworks. Moreover, compound 3 inherits the photomagnetic properties of the MoPtMo SBU. A photomagnetic secondary building unit
(SBU) MoIVPtIVMoIV was employed to
design and synthesize new heterotrimetallic coordination polymers
in a two-step approach, resulting in MnII2MoIV2PtIV coordination chains and CuII2MoIV2PtIV honeycomb
coordination layers.
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Affiliation(s)
- Michał Magott
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland
| | - Marcin Sarewicz
- Faculty of Biochemistry, Biophysics and Biotechnology, Department of Molecular Biophysics, Jagiellonian University, Gronostajowa 7, 30-387 Kraków, Poland
| | - Szymon Buda
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland
| | - Dawid Pinkowicz
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland
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Belov AS, Voloshin YZ, Pavlov AA, Nelyubina YV, Belova SA, Zubavichus YV, Avdeeva VV, Efimov NN, Malinina EA, Zhizhin KY, Kuznetsov NT. Solvent-Induced Encapsulation of Cobalt(II) Ion by a Boron-Capped tris-Pyrazoloximate. Inorg Chem 2020; 59:5845-5853. [PMID: 31984742 DOI: 10.1021/acs.inorgchem.9b03335] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Boron-cross-linked cobalt(II) pseudoclathrochelate was obtained by the template reaction of 2-acetylpyrazoloxime, phenylboronic acid, and a new DMF cobalt(II) solvato complex with a decachloro-closo-decaborate dianion. As confirmed by single-crystal X-ray diffraction, this complex crystallizes with two symmetry-independent cobalt(II) pseudoclathrochelate cations, one decachloro-closo-decaborate dianion, one benzene, one dichloromethane solvent molecule, and two molecules of DMF. The latter act as pseudocapping fragments to the monocapped tris-pyrazoloximate ligands by forming N-H···O hydrogen bonds with their pyrazole groups. The CoIIN6-coordination polyhedra adopt a nearly ideal TP geometry with distortion angles φ equal to 1.22(16) and 2.58(17)° for two symmetry-independent pseudoclathrochelate cations, both containing the encapsulated cobalt(II) ion in its high-spin state (Co-N 2.115(4)-2.198(3) Å). Magnetic properties of this complex were studied both by dc-magnetometry and by solution-state NMR spectroscopy to reveal a high magnetic anisotropy, thus suggesting a large magnetic susceptibility tensor anisotropy (25.8 × 10-32 m3 at 298 K) and a large negative zero-field splitting energy (-85 cm-1). The results of magnetometry studies in the ac magnetic field suggest a single molecule magnet behavior of this TP complex with an effective magnetization reversal barrier of approximately 130 cm-1. Its pseudocapping DMF molecules that form H-bonds with tris-pyrazoloximate fragments are easy to substitute by strong H-bond acceptors, such as chloride ions and di- and tetramethylureas, thus affecting the magnetic properties of a whole pseudomacrobicyclic paramagnetic system.
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Affiliation(s)
- Alexander S Belov
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova st., Moscow, 119991, Russia
| | - Yan Z Voloshin
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova st., Moscow, 119991, Russia.,Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky prosp., Moscow, 119991, Russia
| | - Alexander A Pavlov
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova st., Moscow, 119991, Russia
| | - Yulia V Nelyubina
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova st., Moscow, 119991, Russia.,Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky prosp., Moscow, 119991, Russia
| | - Svetlana A Belova
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova st., Moscow, 119991, Russia
| | - Yan V Zubavichus
- National Research Centre "Kurchatov Institute", 1 Kurchatova pl., Moscow, 123182, Russia.,Boreskov Institute of Catalysis of the Siberian Branch of the Russian Academy of Sciences, 5 Lavrentiev Ave., 630090 Novosibirsk, Russia
| | - Varvara V Avdeeva
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky prosp., Moscow, 119991, Russia
| | - Nikolay N Efimov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky prosp., Moscow, 119991, Russia
| | - Elena A Malinina
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky prosp., Moscow, 119991, Russia
| | - Konstantin Yu Zhizhin
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky prosp., Moscow, 119991, Russia
| | - Nikolay T Kuznetsov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky prosp., Moscow, 119991, Russia
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45
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Sidorov AA, Gogoleva NV, Bazhina ES, Nikolaevskii SA, Shmelev MA, Zorina-Tikhonova EN, Starikov AG, Kiskin MA, Eremenko IL. Some aspects of the formation and structural features of low nuclearity heterometallic carboxylates. PURE APPL CHEM 2020. [DOI: 10.1515/pac-2019-1212] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Heterometallic carboxylate complexes are of paramount interest in pure and applied coordination chemistry. Despite that plurality of such type compounds have been published to date, synthetic aspects of their chemistry often remain in the shadow of intriguing physical properties manifesting by these species. Present review summarizes reliable data on direct synthesis of low nuclearity molecular compounds as well as coordination polymers on their base with carboxylate-bridged {M2Mg} (M = Co2+, Ni2+, Cd2+), {M2Li2} (M = Co2+, Ni2+, Zn2+, VO2+), {M2Ln2} and {M2Ln} (M = Cu2+, Zn2+, Co2+) metal cores. Structural features and stabilization factors are considered and principal outcomes are confirmed by quantum-chemical calculations. Particular attention is paid to consideration of ligand-exchange reactions that allow controllable modification of heterometallic metal core under mild conditions giving diverse molecular complexes with modified ligand environment or Metal-Organic Frameworks with permanent porosity.
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Affiliation(s)
- Aleksey A. Sidorov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences , Leninsky Prosp. 31 , Moscow 119991 , Russia
| | - Natalia V. Gogoleva
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences , Leninsky Prosp. 31 , Moscow 119991 , Russia
| | - Evgeniya S. Bazhina
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences , Leninsky Prosp. 31 , Moscow 119991 , Russia
| | - Stanislav A. Nikolaevskii
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences , Leninsky Prosp. 31 , Moscow 119991 , Russia
| | - Maksim A. Shmelev
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences , Leninsky Prosp. 31 , Moscow 119991 , Russia
| | - Ekaterina N. Zorina-Tikhonova
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences , Leninsky Prosp. 31 , Moscow 119991 , Russia
| | - Andrey G. Starikov
- Institute of Physical and Organic Chemistry of Southern Federal University , Stachki Ave. 194/2 , Rostov-on-Don 344090 , Russia
| | - Mikhail A. Kiskin
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences , Leninsky Prosp. 31 , Moscow 119991 , Russia
| | - Igor L. Eremenko
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences , Leninsky Prosp. 31 , Moscow 119991 , Russia
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46
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Doistau B, Jiménez JR, Guerra S, Besnard C, Piguet C. Key Strategy for the Rational Incorporation of Long-Lived NIR Emissive Cr(III) Chromophores into Polymetallic Architectures. Inorg Chem 2020; 59:1424-1435. [PMID: 31909978 DOI: 10.1021/acs.inorgchem.9b03163] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The CrIIIN6 chromophores are particularly appealing for low-energy sensitization via energy transfer processes since they show extremely long excited state lifetimes reaching the millisecond range in the technologically crucial near-infrared domain. However, their properties were barely harnessed in multimetallic structures because of the lack of both monitoring methods and accessible synthetic pathways. We herein report a remedy to monitor and control the formation of CrIII-containing assemblies in solution via the design of a CrIIIN6 inert "complex-as-ligand" that can be included into polymetallic architectures. As a proof of concept, these CrN6 building blocks were reacted in solution with ZnII or FeII to give extended trinuclear linear Cr-M-Cr assemblies, the structure of which could be addressed by NMR spectroscopy despite the presence of two slowly relaxing CrIII paramagnetic centers. In addition to long CrIII excited state lifetimes and weak sensitivity to oxygen quenching, these polymetallic assemblies display controlled CrIII to MII energy transfers, which pave the way for use of the "complex-as-ligand" strategy for introducing photophysically active CrIII probes into light-converting polymetallic devices.
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Affiliation(s)
- Benjamin Doistau
- Department of Inorganic and Analytical Chemistry , University of Geneva , 30 quai Ernest Ansermet , CH-1211 Geneva 4 , Switzerland
| | - Juan-Ramón Jiménez
- Department of Inorganic and Analytical Chemistry , University of Geneva , 30 quai Ernest Ansermet , CH-1211 Geneva 4 , Switzerland
| | - Sebastiano Guerra
- Department of Inorganic and Analytical Chemistry , University of Geneva , 30 quai Ernest Ansermet , CH-1211 Geneva 4 , Switzerland
| | - Céline Besnard
- Laboratory of Crystallography , University of Geneva , 24 quai Ernest Ansermet , CH-1211 Geneva 4 , Switzerland
| | - Claude Piguet
- Department of Inorganic and Analytical Chemistry , University of Geneva , 30 quai Ernest Ansermet , CH-1211 Geneva 4 , Switzerland
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47
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Mishra S, Paital B, Sahoo HS, Pati SG, Tripathy D, Debata NB. A discrete Cu 2(Pd-bpy) 2L 2 heterometallic compound with superoxide dismutase enzyme like activity. Dalton Trans 2020; 49:8850-8854. [DOI: 10.1039/d0dt00920b] [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
An aqueous soluble discrete heterometallic compound consisting of Cu(ii) and Pd(ii) units with SOD mimicking activity has been demonstrated.
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Affiliation(s)
- Soumya Mishra
- Department of Chemistry
- C.V. Raman Global University
- Bhubaneswar
- India
| | - Biswaranjan Paital
- Redox Regulation Laboratory
- Department of Zoology
- College of Basic Science and Humanities
- Odisha University of Agriculture & Technology
- Bhubaneswar
| | - Himansu Sekhar Sahoo
- Department of Chemistry
- College of Basic Science and Humanities
- Odisha University of Agriculture & Technology
- Bhubaneswar
- India
| | - Samar Gaurav Pati
- Redox Regulation Laboratory
- Department of Zoology
- College of Basic Science and Humanities
- Odisha University of Agriculture & Technology
- Bhubaneswar
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48
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Nath BD, Takaishi K, Ema T. Macrocyclic multinuclear metal complexes acting as catalysts for organic synthesis. Catal Sci Technol 2020. [DOI: 10.1039/c9cy01894h] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Recent progress in homogeneous catalysis with macrocyclic multinuclear metal complexes (categories A–C) is overviewed.
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Affiliation(s)
- Bikash Dev Nath
- Division of Applied Chemistry
- Graduate School of Natural Science and Technology
- Okayama University
- Okayama 700-8530
- Japan
| | - Kazuto Takaishi
- Division of Applied Chemistry
- Graduate School of Natural Science and Technology
- Okayama University
- Okayama 700-8530
- Japan
| | - Tadashi Ema
- Division of Applied Chemistry
- Graduate School of Natural Science and Technology
- Okayama University
- Okayama 700-8530
- Japan
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49
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Lockyer SJ, Fielding AJ, Whitehead GFS, Timco GA, Winpenny REP, McInnes EJL. Close Encounters of the Weak Kind: Investigations of Electron-Electron Interactions between Dissimilar Spins in Hybrid Rotaxanes. J Am Chem Soc 2019; 141:14633-14642. [PMID: 31411874 PMCID: PMC6814243 DOI: 10.1021/jacs.9b05590] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
![]()
We report a family of hybrid [2]rotaxanes
based on inorganic [Cr7NiF8(O2CtBu)16]− (“{Cr7Ni}”)
rings templated about organic threads that are terminated at one end
with pyridyl groups. These rotaxanes can be coordinated to [Cu(hfac)2] (where Hhfac = 1,1,1,5,5,5-hexafluoroacetylacetone), to
give 1:1 or 1:2 Cu:{Cr7Ni} adducts: {[Cu(hfac)2](py-CH2NH2CH2CH2Ph)[Cr7NiF8(O2CtBu)16]}, {[Cu(hfac)2][py-CH2NH2CH2CH3][Cr7NiF8(O2CtBu)16]}, {[Cu(hfac)2]([py-CH2CH2NH2CH2C6H4SCH3][Cr7NiF8(O2CtBu)16])2}, {[Cu(hfac)2]([py-C6H4-CH2NH2(CH2)4Ph][Cr7NiF8(O2CtBu)16])2}, and {[Cu(hfac)2]([3-py-CH2CH2NH2(CH2)3SCH3][Cr7NiF8(O2CtBu)16])2}, the structures of which have been
determined by X-ray diffraction. The {Cr7Ni} rings and
CuII ions both have electronic spin S =
1/2, but with very different g-values. Continuous-wave
EPR spectroscopy reveals the exchange interactions between these dissimilar
spins, and hence the communication between the different molecular
components that comprise these supramolecular systems. The interactions
are weak such that we observe AX or AX2 type spectra. The
connectivity between the {Cr7Ni} ring and thread terminus
is varied such that the magnitude of the exchange interaction J can be tuned. The coupling is shown to be dominated by
through-bond rather than through-space mechanisms.
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Affiliation(s)
- Selena J Lockyer
- School of Chemistry and Photon Science Institute , The University of Manchester , Oxford Road , Manchester M13 9PL , U.K
| | - Alistair J Fielding
- School of Pharmacy and Biomolecular Sciences , Liverpool John Moores University , Liverpool L3 5UX , U.K
| | - George F S Whitehead
- School of Chemistry and Photon Science Institute , The University of Manchester , Oxford Road , Manchester M13 9PL , U.K
| | - Grigore A Timco
- School of Chemistry and Photon Science Institute , The University of Manchester , Oxford Road , Manchester M13 9PL , U.K
| | - Richard E P Winpenny
- School of Chemistry and Photon Science Institute , The University of Manchester , Oxford Road , Manchester M13 9PL , U.K
| | - Eric J L McInnes
- School of Chemistry and Photon Science Institute , The University of Manchester , Oxford Road , Manchester M13 9PL , U.K
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50
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A [13]rotaxane assembled via a palladium molecular capsule. Nat Commun 2019; 10:3720. [PMID: 31420545 PMCID: PMC6697691 DOI: 10.1038/s41467-019-11635-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 07/22/2019] [Indexed: 01/13/2023] Open
Abstract
Molecules that are the size of small proteins are difficult to make. The most frequently examined route is via self-assembly, and one particular approach involves molecular nanocapsules, where ligands are designed that will enforce the formation of specific polyhedra of metals within the core of the structure. Here we show that this approach can be combined with mechanically interlocking molecules to produce nanocapsules that are decorated on their exterior. This could be a general route to very large molecules, and is exemplified here by the synthesis and structural characterization of a [13]rotaxane, containing 150 metal centres. Small angle X-ray scattering combined with atomistic molecular dynamics simulations demonstrate the compound is intact in solution. Mechanically interlocked molecules and molecular cages are two important themes in supramolecular chemistry. Here, the authors combine these concepts to construct a giant [13]rotaxane built around a palladium capsule, one of the most complex metallosupramolecular assemblies yet.
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