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Das A, Jobelius H, Schleinitz J, Gamboa-Ramirez S, Creste G, Kervern G, Raya J, Le Breton N, Guénet A, Boubegtiten-Fezoua Z, Grimaud L, Orio M, Rogez G, Hellwig P, Choua S, Ferlay S, Desage-El Murr M. A hybrid bioinspired catechol-alloxazine triangular nickel complex stabilizing protons and electrons. Inorg Chem Front 2021. [DOI: 10.1039/d1qi01131f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A new class of redox-active ligands merging catechol and alloxazine structures is reported. A trimetallic triangular complex is formed upon complexation to nickel.
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Affiliation(s)
- Agnideep Das
- Université de Strasbourg, Institut de Chimie, CNRS UMR7177, 67000 Strasbourg, France
| | - Hannah Jobelius
- Université de Strasbourg, Institut de Chimie, CNRS UMR7177, 67000 Strasbourg, France
- Université de Strasbourg, Chimie de la Matière Complexe, CNRS UMR7140, 67000 Strasbourg, France
| | - Jules Schleinitz
- Laboratoire des biomolécules, LBM, Département de chimie, École normale supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France
| | | | - Geordie Creste
- Université de Strasbourg, Institut de Chimie, CNRS UMR7177, 67000 Strasbourg, France
| | - Gwendal Kervern
- Université de Lorraine, Faculté des Sciences, boulevard des Aiguillettes, CNRS UMR7036, BP 70239, 54506 Vandoeuvre-les-Nancy Cedex, France
| | - Jesus Raya
- Université de Strasbourg, Institut de Chimie, CNRS UMR7177, 67000 Strasbourg, France
| | - Nolwenn Le Breton
- Université de Strasbourg, Institut de Chimie, CNRS UMR7177, 67000 Strasbourg, France
| | - Aurélie Guénet
- Université de Strasbourg, Institut de Chimie, CNRS UMR7177, 67000 Strasbourg, France
| | | | - Laurence Grimaud
- Laboratoire des biomolécules, LBM, Département de chimie, École normale supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France
| | - Maylis Orio
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France
| | - Guillaume Rogez
- Institut de Physique et Chimie des Matériaux de Strasbourg, Université de Strasbourg, CNRS, UMR 7504, F-67000 Strasbourg, France
| | - Petra Hellwig
- Université de Strasbourg, Chimie de la Matière Complexe, CNRS UMR7140, 67000 Strasbourg, France
| | - Sylvie Choua
- Université de Strasbourg, Institut de Chimie, CNRS UMR7177, 67000 Strasbourg, France
| | - Sylvie Ferlay
- Université de Strasbourg, Chimie de la Matière Complexe, CNRS UMR7140, 67000 Strasbourg, France
| | - Marine Desage-El Murr
- Université de Strasbourg, Institut de Chimie, CNRS UMR7177, 67000 Strasbourg, France
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Mondal P, Ray R, Das A, Lahiri GK. Revelation of Varying Bonding Motif of Alloxazine, a Flavin Analogue, in Selected Ruthenium(II/III) Frameworks. Inorg Chem 2015; 54:3012-21. [DOI: 10.1021/acs.inorgchem.5b00122] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Prasenjit Mondal
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, India 400076
| | - Ritwika Ray
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, India 400076
| | - Ankita Das
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, India 400076
| | - Goutam Kumar Lahiri
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, India 400076
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Inui Y, Shiro M, Kusukawa T, Fukuzumi S, Kojima T. A triangular prismatic hexanuclear iridium(III) complex bridged by flavin analogues showing reversible redox processes. Dalton Trans 2013; 42:2773-8. [PMID: 23235491 DOI: 10.1039/c2dt32535g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
[Ir(6)(μ-alloCl(2)(2-))(3)(Cp*)(6)(OH)(3)](PF(6))(3) (1) having 7,8-dichloroalloxazine dianion (alloCl(2)(2-)) as bridging ligands was synthesized and characterized by X-ray crystallography, spectroscopic and electrochemical measurements. The alloxazine ligands showed unprecedented coordination modes to link the six Ir(III) centres. The complex exhibited remarkable stability and reversible six-electron redox processes at the bridging alloxazine ligands in organic solvents. The first reversible reduction process occurred on each of three alloxazine ligands in 1 to produce a three-electron-reduced species, [Ir(III)(6)Cp*(6)(μ-alloCl(2)˙(3-))(3)(OH)(3)], and was observed as an apparent one-step reduction process at -0.65 V (vs. Fc(0/+)). The second reversible reduction process on each of the three alloxazine ligands in 1 was recorded at almost the same potential, -0.78 V (vs. Fc(0/+)), to afford the six-electron-reduced form, [Ir(III)(6)Cp*(6)(μ-alloCl(2)(4-))(3)(OH)(3)](3-). The radical anion of the alloxazine derivative was detected by EPR measurements at room temperature. After the six-electron reduction of 1 with cobaltocene, the backward oxidation processes of reduced forms with p-chloranil were traced by UV-Vis spectroscopy to confirm the recovery of the original spectrum of 1.
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Affiliation(s)
- Yuji Inui
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, and ALCA (JST), 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
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Kojima T, Inui Y, Miyazaki S, Shiro M, Fukuzumi S. A tetranuclear iridium(iii) complex with a flavin analogue as a bridging ligand in different coordination modes and exchangeable anion encapsulation in a supramolecular cage. Chem Commun (Camb) 2009:6643-5. [DOI: 10.1039/b911033j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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