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Findlay JA, McAdam CJ, Sutton JJ, Preston D, Gordon KC, Crowley JD. Metallosupramolecular Architectures Formed with Ferrocene-Linked Bis-Bidentate Ligands: Synthesis, Structures, and Electrochemical Studies. Inorg Chem 2018; 57:3602-3614. [PMID: 29381330 DOI: 10.1021/acs.inorgchem.7b02503] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The self-assembly of ligands of different geometries with metal ions gives rise to metallosupramolecular architectures of differing structural types. The rotational flexibility of ferrocene allows for conformational diversity, and, as such, self-assembly processes with 1,1'-disubstituted ferrocene ligands could lead to a variety of interesting architectures. Herein, we report a small family of three bis-bidentate 1,1'-disubstituted ferrocene ligands, functionalized with either 2,2'-bipyridine or 2-pyridyl-1,2,3-triazole chelating units. The self-assembly of these ligands with the (usually) four-coordinate, diamagnetic metal ions Cu(I), Ag(I), and Pd(II) was examined using a range of techniques including 1H and DOSY NMR spectroscopies, high-resolution electrospray ionization mass spectrometry, X-ray crystallography, and density functional theory calculations. Additionally, the electrochemical properties of these redox-active metallosupramolecular assemblies were examined using cyclic voltammetry and differential pulse voltammetry. The copper(I) complexes of the 1,1'-disubstituted ferrocene ligands were found to be coordination polymers, while the silver(I) and palladium(II) complexes formed discrete [1 + 1] or [2 + 2] metallomacrocyclic architectures.
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Affiliation(s)
- James A Findlay
- Department of Chemistry , University of Otago , P.O. Box 56, Dunedin 9054 , New Zealand
| | - C John McAdam
- Department of Chemistry , University of Otago , P.O. Box 56, Dunedin 9054 , New Zealand
| | - Joshua J Sutton
- Department of Chemistry , University of Otago , P.O. Box 56, Dunedin 9054 , New Zealand
| | - Dan Preston
- Department of Chemistry , University of Otago , P.O. Box 56, Dunedin 9054 , New Zealand
| | - Keith C Gordon
- Department of Chemistry , University of Otago , P.O. Box 56, Dunedin 9054 , New Zealand
| | - James D Crowley
- Department of Chemistry , University of Otago , P.O. Box 56, Dunedin 9054 , New Zealand
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More hydra than Janus – Non-classical coordination modes in complexes of oligopyridine ligands. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.06.006] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Lo WK, Shepherd RJ, Stranger R, Blackman AG, Cavigliasso G. [Pt(bipy)(ONO2)2] and [{(bipy)Pt(μ-O2NO)2Pt(bipy)}2](NO3)4: Empirically identical but structurally distinct complexes obtained from a basic aqueous solution of [Pt(bipy)2](NO3)2. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.04.007] [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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Preston D, Barnsley JE, Gordon KC, Crowley JD. Controlled Formation of Heteroleptic [Pd2(La)2(Lb)2]4+ Cages. J Am Chem Soc 2016; 138:10578-85. [DOI: 10.1021/jacs.6b05629] [Citation(s) in RCA: 107] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Dan Preston
- Department
of Chemistry, University of Otago,
P.O. Box 56, Dunedin 9054, New Zealand
| | - Jonathan E. Barnsley
- Department
of Chemistry, University of Otago,
P.O. Box 56, Dunedin 9054, New Zealand
| | - Keith C. Gordon
- Department
of Chemistry, University of Otago,
P.O. Box 56, Dunedin 9054, New Zealand
| | - James D. Crowley
- Department
of Chemistry, University of Otago,
P.O. Box 56, Dunedin 9054, New Zealand
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Corinti D, Coletti C, Re N, Chiavarino B, Crestoni ME, Fornarini S. Cisplatin Binding to Biological Ligands Revealed at the Encounter Complex Level by IR Action Spectroscopy. Chemistry 2016; 22:3794-803. [DOI: 10.1002/chem.201504521] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Indexed: 02/03/2023]
Affiliation(s)
- Davide Corinti
- Dipartimento di Chimica e Tecnologie del Farmaco; Università degli Studi di Roma La Sapienza; P. le A. Moro 5 00185 Roma Italy), Fax
| | - Cecilia Coletti
- Dipartimento di Farmacia; Università G. D'Annunzio; Via dei Vestini 31 66100 Chieti Italy
| | - Nazzareno Re
- Dipartimento di Farmacia; Università G. D'Annunzio; Via dei Vestini 31 66100 Chieti Italy
| | - Barbara Chiavarino
- Dipartimento di Chimica e Tecnologie del Farmaco; Università degli Studi di Roma La Sapienza; P. le A. Moro 5 00185 Roma Italy), Fax
| | - Maria Elisa Crestoni
- Dipartimento di Chimica e Tecnologie del Farmaco; Università degli Studi di Roma La Sapienza; P. le A. Moro 5 00185 Roma Italy), Fax
| | - Simonetta Fornarini
- Dipartimento di Chimica e Tecnologie del Farmaco; Università degli Studi di Roma La Sapienza; P. le A. Moro 5 00185 Roma Italy), Fax
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Lo WKC, Huff GS, Preston D, McMorran DA, Giles GI, Gordon KC, Crowley JD. A Dinuclear Platinum(II) N4Py Complex: An Unexpected Coordination Mode For N4Py. Inorg Chem 2015; 54:6671-3. [DOI: 10.1021/acs.inorgchem.5b01032] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Warrick K. C. Lo
- Department of Chemistry, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand
| | - Gregory S. Huff
- Department of Chemistry, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology, University of Otago, Dunedin, New Zealand
| | - Dan Preston
- Department of Chemistry, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand
| | - David A. McMorran
- Department of Chemistry, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand
| | - Gregory I. Giles
- Department of Pharmacology
and Toxicology, University of Otago, P.O. Box 913, Dunedin, New Zealand
| | - Keith C. Gordon
- Department of Chemistry, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology, University of Otago, Dunedin, New Zealand
| | - James D. Crowley
- Department of Chemistry, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand
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Five Coordinate Platinum(II) in [Pt(bpy)(cod)(Me)][SbF6]: A Structural and Spectroscopic Study. INORGANICS 2015. [DOI: 10.3390/inorganics3020118] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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Lo WKC, Huff GS, Cubanski JR, Kennedy ADW, McAdam CJ, McMorran DA, Gordon KC, Crowley JD. Comparison of inverse and regular 2-pyridyl-1,2,3-triazole "click" complexes: structures, stability, electrochemical, and photophysical properties. Inorg Chem 2015; 54:1572-87. [PMID: 25615621 DOI: 10.1021/ic502557w] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Two inverse 2-pyridyl-1,2,3-triazole "click" ligands, 2-(4-phenyl-1H-1,2,3-triazol-1-yl)pyridine and 2-(4-benzyl-1H-1,2,3-triazol-1-yl)pyridine, and their palladium(II), platinum(II), rhenium(I), and ruthenium(II) complexes have been synthesized in good to excellent yields. The properties of these inverse "click" complexes have been compared to the isomeric regular compounds using a variety of techniques. X-ray crystallographic analysis shows that the regular and inverse complexes are structurally very similar. However, the chemical and physical properties of the isomers are quite different. Ligand exchange studies and density functional theory (DFT) calculations indicate that metal complexes of the regular 2-(1-R-1H-1,2,3-triazol-4-yl)pyridine (R = phenyl, benzyl) ligands are more stable than those formed with the inverse 2-(4-R-1H-1,2,3-triazol-1-yl)pyridine (R = phenyl, benzyl) "click" chelators. Additionally, the bis-2,2'-bipyridine (bpy) ruthenium(II) complexes of the "click" chelators have been shown to have short excited state lifetimes, which in the inverse triazole case, resulted in ejection of the 2-pyridyl-1,2,3-triazole ligand from the complex. Under identical conditions, the isomeric regular 2-pyridyl-1,2,3-triazole ruthenium(II) bpy complexes are photochemically inert. The absorption spectra of the inverse rhenium(I) and platinum(II) complexes are red-shifted compared to the regular compounds. It is shown that conjugation between the substituent group R and triazolyl unit has a negligible effect on the photophysical properties of the complexes. The inverse rhenium(I) complexes have large Stokes shifts, long metal-to-ligand charge transfer (MLCT) excited state lifetimes, and respectable quantum yields which are relatively solvent insensitive.
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Affiliation(s)
- Warrick K C Lo
- Department of Chemistry, University of Otago , P.O. Box 56, Dunedin 9054, New Zealand
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Scottwell SØ, Shaffer KJ, McAdam CJ, Crowley JD. 5-Ferrocenyl-2,2′-bipyridine ligands: synthesis, palladium(ii) and copper(i) complexes, optical and electrochemical properties. RSC Adv 2014. [DOI: 10.1039/c4ra05333h] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Two 5-ferrocenyl-2,2′-bipyridine ligands were synthesised using the palladium(0) catalysed Suzuki–Miyaura cross-coupling reaction. Palladium(ii) and copper(i) complexes of these ligands were synthesised and the optical and electrochemical properties of the complexes were compared to those of the “free” ligands.
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Affiliation(s)
- S. Ø. Scottwell
- Department of Chemistry
- University of Otago
- Dunedin, New Zealand
| | - K. J. Shaffer
- Department of Chemistry
- University of Otago
- Dunedin, New Zealand
| | - C. J. McAdam
- Department of Chemistry
- University of Otago
- Dunedin, New Zealand
| | - J. D. Crowley
- Department of Chemistry
- University of Otago
- Dunedin, New Zealand
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