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Siddique RG, McMurtrie JC, Clegg JK. Self-assembled Co(II) and Co(III) [M 2L 3] helicates and [M 4L 6] tetrahedra from an unsymmetrical quaterpyridine ligand. Dalton Trans 2024; 53:11237-11241. [PMID: 38916120 DOI: 10.1039/d4dt01565g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
In order to bind guest molecules with exquisite selectivity, biological host molecules often employ low symmetry binding pockets. The majority of metallosupramolecular assemblies, however, rely on symmetrical ligands to form high-symmetry assemblies that enclosing similarly symmetrical cavities. Here we employ an unsymmetrical quaterpyridine ligand in combination with cobalt(II) to form a mixture of low-symmetry [M2L3] helicates and [M4L6] tetrahedra and their subsequent oxidation to Co(III)-containing assemblies.
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Affiliation(s)
- Rashid G Siddique
- School of Chemistry and Molecular Biosciences, The University of Queensland, QLD, 4072, Australia.
- School of Physics, Chemistry and Earth Sciences, The University of Adelaide, SA, 5005, Australia
| | - John C McMurtrie
- School of Chemistry and Physics and Centre for Materials Science, Queensland University of Technology (QUT), Brisbane, Queensland 4000, Australia
| | - Jack K Clegg
- School of Chemistry and Molecular Biosciences, The University of Queensland, QLD, 4072, Australia.
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2
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Siddique RG, Whittaker JJ, Al-Fayaad HA, McMurtrie JC, Clegg JK. Remote stereocentres do not disrupt the stereochemical coupling in homochiral [M 2L 3] helicates and [M 4L 6] tetrahedra. Dalton Trans 2023; 52:13487-13491. [PMID: 37725064 DOI: 10.1039/d3dt02486e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/21/2023]
Abstract
Despite the use of achiral ligands, the vast majority of metallosupramolecular assemblies containing octahedral tris-bidentate metal centres show strong stereochemical communication between metal centres, generally resulting in homochiral assemblies even though they are statistically disfavoured. Here we show that when resolved stereocentres are attached to the central part of a quaterpyridine ligand, the stereochemical coupling from this centre is insufficient to disrupt the strong stereochemical communication between metal centres in both [M2L3] helicates and [M4L6] tetrahedra.
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Affiliation(s)
- Rashid G Siddique
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Qld, 4072, Australia.
| | - Jacob J Whittaker
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Qld, 4072, Australia.
| | - Hydar A Al-Fayaad
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Qld, 4072, Australia.
| | - John C McMurtrie
- School of Chemistry and Physics and Centre for Materials Science, Queensland University of Technology (QUT), Brisbane, Queensland 4000, Australia
| | - Jack K Clegg
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Qld, 4072, Australia.
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3
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Siddique RG, Arachchige KSA, Al-Fayaad HA, McMurtrie JC, Clegg JK. Sterics and metal-ion radius control the self-assembly of [M 2L 3] helicates. Dalton Trans 2022; 51:12704-12708. [PMID: 35943089 DOI: 10.1039/d2dt02241a] [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 interplay of many factors influences the outcomes of self-assembly reactions. Using an acetylene-appended quaterpyridine ligand we show that both the size of the metal ion and the presence of steric repulsion between the acetylene groups result in the exclusive formation of [M2L3] helicates rather than a helicate/tetrahedron equilibrium.
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Affiliation(s)
- Rashid G Siddique
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Qld, 4072, Australia.
| | - Kasun S A Arachchige
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Qld, 4072, Australia.
| | - Hydar A Al-Fayaad
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Qld, 4072, Australia.
| | - John C McMurtrie
- School of Chemistry and Physics and Centre for Materials Science, Queensland University of Technology (QUT), Brisbane, Queensland 4000, Australia
| | - Jack K Clegg
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Qld, 4072, Australia.
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4
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Tran NM, Yoo H. Recent advances in heteroleptic multiple-stranded metallosupramolecules. Dalton Trans 2021; 49:11819-11827. [PMID: 32797124 DOI: 10.1039/d0dt02243h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Well-ordered combination of defined coordination spheres and multiple types of ligands (heteroleptic) in a given structure can expand the structural complexity and functional diversity of the resulting metallosupramolecules. Such heteroleptic metallosupramolecular architectures are expected to afford advanced utility in a variety of applications. In this concise review article, recent advances in the development of multi-nuclear-cluster-based heteroleptic multiple-stranded (HLMS) metallosupramolecules are summarized and demonstrated. To construct HLMS metallosupramolecules, one type of multitopic ligands can be employed for building up multiple strands, while another type of ligands can be utilized to construct multi-nuclear clusters. Most HLMS metallosupramolecules adopt helical geometries and have high molecular symmetry, which can be key factors for the structural completion. HLMS metallosupramolecules can be used as basic building blocks for the fabrication of higher-order polymeric or discrete assembly architectures with well-defined geometries.
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Affiliation(s)
- Ngoc Minh Tran
- Department of Materials Science and Chemical Engineering, Hanyang University, Ansan, Gyeonggi-do 15588, Republic of Korea.
| | - Hyojong Yoo
- Department of Materials Science and Chemical Engineering, Hanyang University, Ansan, Gyeonggi-do 15588, Republic of Korea.
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5
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Gusev AN, Shulgin VF, Kiskin MA. Self-Assembly of Polynuclear Complexes Based on Spacer- Armed Pyridylazoles. J STRUCT CHEM+ 2019. [DOI: 10.1134/s0022476619030016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Gusev A, Nemec I, Herchel R, Shul'gin V, Ryush I, Kiskin M, Efimov N, Ugolkova E, Minin V, Lyssenko K, Eremenko I, Linert W. Copper(ii) self-assembled clusters of bis((pyridin-2-yl)-1,2,4-triazol-3-yl)alkanes. Unusual rearrangement of ligands under reaction conditions. Dalton Trans 2019; 48:3052-3060. [PMID: 30758390 DOI: 10.1039/c8dt04816a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The reaction of two structurally related bridging ligands bis[5-(2-pyridyl)-1,2,4-triazole-3-yl]methane (H2L1) and bis[5-(2-pyridyl)-1,2,4-triazole-3-yl]ethane (H2L2) with copper(ii) salts resulted in a surprising wide variety of complex structures [Cu2(H2L1)Cl2]Cl2·4CH3OH (1), [Cu4(L1)4]·4H2O (2), [Cu(H2L2)(ClO4)2] (3) and [Cu3(OH)Na2(L')6](ClO4)·5H2O·C3H6O (4), where HL' is 3,5-bis-(pyridin-2-yl)-1,2,4-triazole, which were structurally characterized by the X-ray diffraction method. Complexes 1 and 2 were prepared on the H2L1 basis and have binuclear and tetranuclear structures, respectively, demonstrating strong impact of the type of counter anion on the coordination mode of the ligand. In contrast, the reaction between Cu(ClO4)2 6H2O and H2L2 led to the preparation of mononuclear complex 3. The reaction of H2L2 with Cu(ClO4)2 under alkaline conditions led to oxidative rearrangement of the ligand and the homoleptic pentanuclear complex 4 with anionic ligand L' was prepared. Magnetic properties were studied for compounds 1, 2 and 4 and for all of them the antiferromagnetic interactions between the Cu atoms were confirmed and analyzed by the spin Hamiltonian formalism. Furthermore, the occurrence of the antisymmetric exchange was confirmed in 4. The magnetic data analysis was supported by the X-band EPR measurements performed for complexes 1, 2 and 4.
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Affiliation(s)
- Alexey Gusev
- General and Physical Chemistry Department, V.I. Vernadsky Crimean Federal University, Acad. Vernadsky av. 4, Simferopol, 295007, Crimea.
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7
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Weekes RJ, Hawes CS. Synthesis, coordination chemistry and photophysical properties of naphtho-fused pyrazole ligands. CrystEngComm 2019. [DOI: 10.1039/c9ce01074b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The synthesis of two π-extended pyrazole ligands is reported, and their zinc(ii) and copper(ii) complexes are studied spectroscopically and crystallographically, revealing the influence of the fused naphthyl substituent.
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Affiliation(s)
- Rohan J. Weekes
- School of Chemical and Physical Sciences
- Keele University
- Keele ST5 5BG
- UK
| | - Chris S. Hawes
- School of Chemical and Physical Sciences
- Keele University
- Keele ST5 5BG
- UK
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9
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Archer RJ, Scott HS, Polson MIJ, Williamson BE, Mathonière C, Rouzières M, Clérac R, Kruger PE. Varied spin crossover behaviour in a family of dinuclear Fe(ii) triple helicate complexes. Dalton Trans 2018; 47:7965-7974. [PMID: 29862409 DOI: 10.1039/c8dt01567h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dinuclear triple-helicate complexes of the formula [Fe2L3](BF4)4·solv (solv = CH3CN, CHCl3, H2O) have been synthesised and structurally characterised. The bis-bidentate ligands, L, present either strong-field 2-pyridylimine (1) or weaker-field 2-imidazolylimine (2) and 4-imidazolylimine (3) coordination spheres about Fe(ii) centres in an octahedral geometry. Whereas 1 is pervasively diamagnetic, spin crossover (SCO) behaviour is observed in 2 and 3 and has been studied using variable-temperature structural, UV-visible spectroscopic, magnetic and photo-magnetic techniques. Variable-temperature (1.8-400 K) magnetic-susceptibility measurements reveal the T1/2 values of 2 and 3 to be strongly dependent upon the solvent and degree of solvation. Photomagnetic studies at 10 K under white-light irradiation revealed an inefficient photo-induced SCO in 2, but full switching in 3.
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Affiliation(s)
- Rosanna J Archer
- School of Physical and Chemical Sciences, University of Canterbury, Private Bag 4800, Christchurch, 8140, New Zealand
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Barry DE, Hawes CS, Byrne JP, la Cour Poulsen B, Ruether M, O'Brien JE, Gunnlaugsson T. A folded [2 × 2] metallo-supramolecular grid from a bis-tridentate (1,2,3-triazol-4-yl)-picolinamide (tzpa) ligand. Dalton Trans 2017; 46:6464-6472. [PMID: 28470292 DOI: 10.1039/c7dt01533j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A flexible ditopic ligand 1 containing two N,N,O-tridentate (1,2,3-triazol-4-yl)-picolinamide chelating pockets is reported and the formation of multimetallic architectures is explored in the solid and the solution phase. The self-assembled ZnII complex [Zn4(1)4](ClO4)8 exhibited a folded [2 × 2] square grid supramolecular architecture that selectively assembled in MeCN solution as shown using various spectroscopic techniques. The closely related FeII complex shows equivalent behaviour in the solid state, while a discrete dinuclear species [Cu2(NO3)41]·5MeCN was the sole product observed in the solid state from the reaction between 1 and CuII under similar conditions.
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Affiliation(s)
- Dawn E Barry
- School of Chemistry and Trinity Biomedical Sciences Institute, The University of Dublin, Trinity College Dublin, Dublin 2, Ireland.
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11
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Gusev AN, Shul'gin VF, Ryush IO, Hasegawa M, Kiskin MA, Efimov NN, Lyssenko KA, Eremenko IL, Linert W. Copper(II), Nickel(II), and Cobalt(II)/(III) Self-Assembled Polynuclear Complexes of Bis[(pyridin-2-yl)-1,2,4-triazol-3-yl]]methane. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201601107] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Alexey N. Gusev
- General and Physical Chemistry Department; V. I. Vernadsky Crimean Federal University; Acad. Vernadsky av. 4 295007 Simferopol Crimea
| | - Victor F. Shul'gin
- General and Physical Chemistry Department; V. I. Vernadsky Crimean Federal University; Acad. Vernadsky av. 4 295007 Simferopol Crimea
| | - Irina O. Ryush
- General and Physical Chemistry Department; V. I. Vernadsky Crimean Federal University; Acad. Vernadsky av. 4 295007 Simferopol Crimea
| | - Miki Hasegawa
- Department of Chemistry and Biological Science; College of Science and Engineering; Aoyama Gakuin University; 252-5258 Kanagawa Japan
| | - Mikhail A. Kiskin
- N. S. Kurnakov Institute of General and Inorganic Chemistry; Russian Academy of Sciences; 119991 Moscow Russia
| | - Nikolay N. Efimov
- N. S. Kurnakov Institute of General and Inorganic Chemistry; Russian Academy of Sciences; 119991 Moscow Russia
| | - Konstantin A. Lyssenko
- N. S. Kurnakov Institute of General and Inorganic Chemistry; Russian Academy of Sciences; 119991 Moscow Russia
| | - Igor L. Eremenko
- A. N. Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; 119991 Moscow Russia
| | - Wolfgang Linert
- Institute of Applied Synthetic Chemistry; Vienna University of Technology; Getreidemarkt 9/163-AC 1060 Vienna Austria
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12
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Gouré E, Gerey B, Clémancey M, Pécaut J, Molton F, Latour JM, Blondin G, Collomb MN. Intramolecular Electron Transfers Thwart Bistability in a Pentanuclear Iron Complex. Inorg Chem 2016; 55:9178-86. [PMID: 27251764 DOI: 10.1021/acs.inorgchem.6b00791] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
With the intention to investigate the redox properties of polynuclear complexes as previously reported for the pentamanganese complex [{Mn(II)(μ-bpp)3}2Mn(III)Mn(II)2(μ3-O)](3+) (2(3+)), we focused on the analogous pentairon complex that was previously isolated as all-ferrous. As Masaoka and co-workers recently published, aerobic synthesis leads to the [{Fe(II)(μ-bpp)3}2Fe(III)Fe(II)2(μ3-O)](3+) complex (1(3+)). This species exhibits in acetonitrile solution four reversible one-electron oxidation waves. Accordingly, the three oxidized species 1(4+), 1(5+), and 1(6+) with a 3Fe(II)2Fe(III), 2Fe(II)3Fe(III), and 1Fe(II)4Fe(III) composition, respectively, were generated by bulk electrolysis and isolated. Mössbauer spectroscopy allowed us to determine the spin states of all the iron ions and to unambiguously locate the sites of the successive oxidations. They all occur in the μ3-oxo core except for the 1(4+) to 1(5+) process that presents a striking electronic rearrangement, with both metals in axial position being oxidized while the core is reduced to the [Fe(III)Fe(II)2(μ3-O)](5+) oxidation level. This strongly differs from the redox behavior of the Mn5 system. The origin of this electronic switch is discussed.
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Affiliation(s)
- Eric Gouré
- Université Grenoble Alpes, DCM, F-38000 Grenoble, France.,CNRS, DCM, F-38000 Grenoble, France
| | - Bertrand Gerey
- Université Grenoble Alpes, DCM, F-38000 Grenoble, France.,CNRS, DCM, F-38000 Grenoble, France
| | - Martin Clémancey
- Université Grenoble Alpes, LCBM, pmb, F-38000 Grenoble, France.,CEA, BIG-LCBM, pmb, F-38000 Grenoble, France
| | - Jacques Pécaut
- Université Grenoble Alpes, INAC-SyMMES, F-38000 Grenoble, France.,CEA, INAC-SyMMES, Reconnaissance Ionique et Chimie de Coordination, F-38000 Grenoble, France
| | - Florian Molton
- Université Grenoble Alpes, DCM, F-38000 Grenoble, France.,CNRS, DCM, F-38000 Grenoble, France
| | | | - Geneviève Blondin
- CEA, BIG-LCBM, pmb, F-38000 Grenoble, France.,CNRS UMR 5249, LCBM, pmb, F-38000 Grenoble, France
| | - Marie-Noëlle Collomb
- Université Grenoble Alpes, DCM, F-38000 Grenoble, France.,CNRS, DCM, F-38000 Grenoble, France
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13
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Darawsheh M, Barrios LA, Roubeau O, Teat SJ, Aromí G. Guest-, Light- and Thermally-Modulated Spin Crossover in [FeII2] Supramolecular Helicates. Chemistry 2016; 22:8635-45. [DOI: 10.1002/chem.201601080] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Mohanad Darawsheh
- Departement de Inorgánica; Universitat de Barcelona; Diagonal 645 08028 Barcelona Spain
| | - Leoni A. Barrios
- Departement de Inorgánica; Universitat de Barcelona; Diagonal 645 08028 Barcelona Spain
| | - Olivier Roubeau
- Instituto de Ciencia de Materiales de Aragón (ICMA); CSIC and Universidad de Zaragoza; Plaza San Francisco s/n 50009 Zaragoza Spain
| | - Simon J. Teat
- Advanced Light Source; Berkeley Laboratory; 1 Cyclotron Road Berkeley California 94720 USA
| | - Guillem Aromí
- Departement de Inorgánica; Universitat de Barcelona; Diagonal 645 08028 Barcelona Spain
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14
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Cook TR, Stang PJ. Recent Developments in the Preparation and Chemistry of Metallacycles and Metallacages via Coordination. Chem Rev 2015; 115:7001-45. [DOI: 10.1021/cr5005666] [Citation(s) in RCA: 1299] [Impact Index Per Article: 144.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Timothy R. Cook
- Department
of Chemistry, University at Buffalo, State University of New York, 359 Natural Sciences Complex, Buffalo, New York 14260, United States
| | - Peter J. Stang
- Department
of Chemistry, University of Utah, 315 S. 1400 E. Room 2020, Salt Lake City, Utah 84112, United States
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15
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Li Q, Huang F, Fan Y, Wang Y, Li J, He Y, Jiang H. AgI-Directed Triple-Stranded Helicates withmeta-Ethynylpyridine Ligands. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402345] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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16
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[Fe₂L₃]⁴⁺ cylinders derived from bis(bidentate) 2-pyridyl-1,2,3-triazole "click" ligands: synthesis, structures and exploration of biological activity. Molecules 2013; 18:6383-407. [PMID: 23760034 PMCID: PMC6290563 DOI: 10.3390/molecules18066383] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 05/16/2013] [Accepted: 05/17/2013] [Indexed: 01/21/2023] Open
Abstract
A series of metallosupramolecular [Fe2L3](BF4)4 “click” cylinders have been synthesized in excellent yields (90%–95%) from [Fe(H2O)6](BF4)2 and bis(bidentate) pyridyl-1,2,3-triazole ligands. All complexes were characterized by elemental analysis, IR, UV-vis, 1H-, 13C- and DOSY-NMR spectroscopies and, in four cases, the structures confirmed by X-ray crystallography. Molecular modeling indicated that some of these “click” complexes were of similar size and shape to related biologically active pyridylimine-based iron(II) helicates and suggested that the “click” complexes may bind both duplex and triplex DNA. Cell-based agarose diffusion assays showed that the metallosupramolecular [Fe2L3](BF4)4 “click” cylinders display no antifungal activity against S. cerevisiae. This observed lack of antifungal activity appears to be due to the poor stability of the “click” complexes in DMSO and biological media.
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17
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Hawes CS, Kruger PE. Synthesis and characterisation of dinuclear Co(II), Ni(II) and Cu(II) unsaturated helical complexes from a novel dipyridyl-bispyrazole ligand. Polyhedron 2013. [DOI: 10.1016/j.poly.2012.09.035] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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