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Hale AR, Aebersold LE, Peralta JE, Foguet-Albiol D, Abboud KA, Christou G. Analysis of spin frustration in an FeIII7 cluster using a combination of computational, experimental, and magnetostructural correlation methods. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.116045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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2
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Shiga T, Okawa N, Oshio H. A triple-triangle cluster derived from a simple tridentate ligand. Dalton Trans 2019; 48:17437-17440. [PMID: 31686072 DOI: 10.1039/c9dt03232k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The heptanuclear ferric cluster, [FeIII7(O)6(HL)5(H2L)(H2O)8](BF4)4 (H2L = 2,6-bis(1,5-diphenyl-1H-pyrazol-3-yl)pyridine), was synthesized by the reaction of the planar tridentate ligand H2L with iron(ii) tetrafluoroborate hexahydrate. The cluster has a corner-shared triple-triangle core structure connected by three μ-O atoms, and it has a spin-frustrated ferrimagnetic spin ground state of S = 19/2.
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Affiliation(s)
- Takuya Shiga
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8571, Japan.
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3
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Slater-Parry ME, Durrant JP, Howells JM, Pitak MB, Horton PN, Klooster WT, Coles SJ, O'Connor HM, Brechin EK, Barra AL, Jones LF. Crowding out: ligand modifications and their structure directing effects on brucite-like {M x(μ 3-OH) y} (M = Co(ii), Ni(ii)) core growth within polymetallic cages. Dalton Trans 2019; 48:1477-1488. [PMID: 30632582 DOI: 10.1039/c8dt04229b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Previous employment of the ligands 2-methoxy-6-[(methylimino)methyl]phenol (L1H) and 2-methoxy-6-[(phenylimino)methyl]phenol (L2H) has resulted in the self-assembly of pseudo metallocalix[6]arene complexes of general formulae: [M7(μ3-OH)6(Lx)6](NO3)y (M = Ni(ii), x = 1, y = 2 (1) and Co(ii/iii), x = 2, y = 3 (2)). Extrapolating upon this work, we report the coordination chemistry of ligands 2-methoxy-6-{[(2-methoxyphenyl)imino]methyl}phenol (L3H), 2-[(benzylimino)methyl]-6-methoxyphenol (L4H), 2-[(benzylamino)methyl]-6-methoxyphenol (L5H) and 2-[(benzylamino)methyl]-4-bromo-6-methoxyphenol (L6H), whose structures are modifications of ligands L1-2H. These ligands are employed in the synthesis and characterisation of the dimetallic complex [Ni(ii)2(L3)3(H2O)](NO3)·2H2O·3MeOH (3); the monometallic complexes [Ni(ii)(L4)2] (4) and [Co(iii)(L4)3]·H2O·MeOH (5a); and the tetranuclear pseudo metallocalix[4]arene complexes: [(NO3)⊂Co(ii)4(μ3-OH)2(L5)4(H2O)2](NO3)·H2O (6), [(NO3)⊂Ni(ii)4(μ3-OH)2(L5)4(H2O)2](NO3)·H2O (7) and [Ni(ii)4(μ3-OH)2(L6)4(NO3)2]·MeCN (8). The tetrametallic 'butterfly' core topologies in 6-8 are discussed with respect to their structural and topological relationship with their heptanuclear [M7] (M = Co(ii), Ni(ii)) pseudo metallocalix[6]arene ancestors (1 and 2).
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Affiliation(s)
| | - James P Durrant
- School of Natural Sciences, Bangor University, Bangor, Wales, LL57 2DG, UK.
| | - Joshua M Howells
- School of Natural Sciences, Bangor University, Bangor, Wales, LL57 2DG, UK.
| | - Mateusz B Pitak
- UK National Crystallographic Service, Chemistry, Faculty of Natural and Environmental Sciences, University of Southampton, England SO17 1BJ, UK
| | - Peter N Horton
- UK National Crystallographic Service, Chemistry, Faculty of Natural and Environmental Sciences, University of Southampton, England SO17 1BJ, UK
| | - Wim T Klooster
- UK National Crystallographic Service, Chemistry, Faculty of Natural and Environmental Sciences, University of Southampton, England SO17 1BJ, UK
| | - Simon J Coles
- UK National Crystallographic Service, Chemistry, Faculty of Natural and Environmental Sciences, University of Southampton, England SO17 1BJ, UK
| | - Helen M O'Connor
- EaStCHEM School of Chemistry, David Brewster Road, University of Edinburgh, Edinburgh, Scotland EH9 3FJ, UK
| | - Euan K Brechin
- EaStCHEM School of Chemistry, David Brewster Road, University of Edinburgh, Edinburgh, Scotland EH9 3FJ, UK
| | - Anne-Laure Barra
- LNCMI-CNRS, Universite Grenoble-Alpes, Avenue des Martyrs, Grenoble, France
| | - Leigh F Jones
- School of Natural Sciences, Bangor University, Bangor, Wales, LL57 2DG, UK.
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4
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Shova S, Cazacu M, Novitchi G, Zoppellaro G, Train C, Arion VB. An iron(iii)-centred ferric wheel Fe⊂{Fe 6} with a siloxane-based bis-salicylidene Schiff base. Dalton Trans 2017; 46:1789-1793. [PMID: 28120985 DOI: 10.1039/c7dt00141j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A new iron(iii)-centred ferric wheel Fe⊂{Fe6} of the formula [Fe7(H2L)6(NCS)6](ClO4)3·10H2O, where H4L = N,N'-bis(3-carboxylsalicylidene)-1,3-bis(3-aminopropyl)tetramethyldisiloxane, was synthesised and fully characterised. 57Fe Mössbauer spectra indicate the presence of high spin (S = 5/2) Fe3+ cations adopting a slightly different coordination environment in agreement with the X-ray diffraction structure. There are competing antiferromagnetic exchange interactions along the rim (J1 = -1.00 cm-1) and the radius (J2 = -1.46 cm-1) of the wheel.
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Affiliation(s)
- Sergiu Shova
- "Petru Poni" Institute of Macromolecular Chemistry, Aleea G. Ghica Voda 41A, 700487, Iasi, Romania.
| | - Maria Cazacu
- "Petru Poni" Institute of Macromolecular Chemistry, Aleea G. Ghica Voda 41A, 700487, Iasi, Romania.
| | - Ghenadie Novitchi
- Laboratoire National des Champs Magnétiques Intenses-CNRS, Université Joseph Fourier, 25 Avenue des Martyrs, 38042 Grenoble Cedex 9, France
| | - Giorgio Zoppellaro
- Regional Centre of Advanced Technologies and Materials, Faculty of Sciences, Palacký University in Olomouc, Šlechtitelù 11, 78371 Olomouc, Czech Republic
| | - Cyrille Train
- Laboratoire National des Champs Magnétiques Intenses-CNRS, Université Joseph Fourier, 25 Avenue des Martyrs, 38042 Grenoble Cedex 9, France
| | - Vladimir B Arion
- Institute of Inorganic Chemistry of the University of Vienna, Währinger Strasse 42, A-1090 Vienna, Austria.
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5
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Zhang H, Zhang J, Liu R, Li Y, Liu W, Li W. Five Disk‐Shaped {M
II
7
} (M = Mn, Fe, Co, Cu, Zn) Clusters and One Capsule‐Like {Cu
II
6
Na
I
2
} Cluster Assembled from the Same Schiff Base Ligand. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600455] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Haifeng Zhang
- College of ChemistryChemical Engineering and Materials ScienceSoochow University215123SuzhouP. R. China
- Department of Chemistry and Chemical EngineeringJining University273155QufuChina
| | - Jin Zhang
- College of ChemistryChemical Engineering and Materials ScienceSoochow University215123SuzhouP. R. China
| | - Rui Liu
- Department of Chemistry and Chemical EngineeringJining University273155QufuChina
| | - Yahong Li
- College of ChemistryChemical Engineering and Materials ScienceSoochow University215123SuzhouP. R. China
| | - Wei Liu
- College of ChemistryChemical Engineering and Materials ScienceSoochow University215123SuzhouP. R. China
| | - Wu Li
- Key Laboratory of Salt Lake Resources and ChemistryQinghai Institute of Salt LakesChinese Academy of Sciences810008XiningP. R. China
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