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Dubourdeaux P, Blondin G, Latour JM. Mixed Valence (μ-Phenoxido) Fe II Fe III et Fe III Fe IV Compounds: Electron and Proton Transfers. Chemphyschem 2021; 23:e202100399. [PMID: 34633731 DOI: 10.1002/cphc.202100399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 10/03/2021] [Indexed: 11/08/2022]
Abstract
Mixed-valence non-heme diiron centers are present at the active sites of a few enzymes and confer them interesting reactivities with the two ions acting in concert. Related (μ-phenoxido)diiron complexes have been developed as enzyme mimics. They exhibit very rich spectroscopic properties enabling independent monitoring of each individual ion, which proved useful for mechanistic studies of catalytic hydrolysis and oxidation reactions. In our studies of such complexes, we observed that these compounds give rise to a wide variety of electron transfers (intervalence charge transfer), proton transfers (tautomerism), coupled electron and proton transfers (H. abstraction and PCET). In this minireview, we present and analyze the main results illustrating the latter aspects.
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Affiliation(s)
| | - Geneviève Blondin
- Univ. Grenoble Alpes, CEA, CNRS, IRIG-LCBM/pmb, F-38000, Grenoble, France
| | - Jean-Marc Latour
- Univ. Grenoble Alpes, CEA, CNRS, IRIG-LCBM/pmb, F-38000, Grenoble, France
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Tokunaga K, Odate F, Asami D, Tahara K, Sato M. A Theoretical Procedure Based on Classical Electrostatics and Density Functional Theory for Screening Non-Square-Shaped Mixed-Valence Complexes for Logic Gates in Molecular Quantum-Dot Cellular Automata. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20200217] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Ken Tokunaga
- Division of Liberal Arts, Center for Promotion of Higher Education, Kogakuin University, 2665-1 Nakano machi, Hachioji, Tokyo 192-0015, Japan
| | - Fumiya Odate
- Applied Chemistry and Chemical Engineering Program, Graduate School, Kogakuin University, 2665-1 Nakano machi, Hachioji, Tokyo 192-0015, Japan
| | - Daiya Asami
- Department of Environmental Chemistry and Chemical Engineering, School of Advanced Engineering, Kogakuin University, 2665-1 Nakano machi, Hachioji, Tokyo 192-0015, Japan
| | - Keishiro Tahara
- Graduate School of Material Science, University of Hyogo, 3-2-1 Koto, Kamigori-cho, Ako-gun, Hyogo 678-1297, Japan
| | - Mitsunobu Sato
- Department of Applied Physics, School of Advanced Engineering, Kogakuin University, 2665-1 Nakano machi, Hachioji, Tokyo 192-0015, Japan
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Gouré E, Carboni M, Dubourdeaux P, Clémancey M, Balasubramanian R, Lebrun C, Bayle PA, Maldivi P, Blondin G, Latour JM. Cis/trans isomerizations in diiron complexes involving aniline or anilide ligands. Inorg Chem 2014; 53:10060-9. [PMID: 25254906 DOI: 10.1021/ic501793v] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We have recently reported a deprotonation-induced valence inversion within a phenoxido-bridged mixed-valent diiron(II,III) complex. The initial aniline coordinated to the Fe(II) site reacts with triethylamine, and the resulting complex contains an anilide ligand coordinated to the Fe(III) ion. The behavior of these complexes in acetonitrile is indeed more intricate. Owing to the very distinctive spectroscopic signatures of the complexes, the conjunction of NMR, Mössbauer, and UV-visible absorption spectroscopies allows one to evidence two isomerization reactions, one involving the aniline linked to Fe(II) and the other the anilide on Fe(III). Theoretical calculations sustain this conclusion. Aniline in the cis position versus the bridging phenoxide is shown to be the most stable isomer while the anilide trans to the phenoxido bridge is favored. The trans isomer of the aniline complex is more acidic than the cis one by 1 pKa unit. Isomerization of the anilide complex is 10 times faster than the analogous isomerization of the aniline complex. Both reactions are proposed to proceed through a unique mechanism. This is the first time that such isomerization reactions are evidenced in dinuclear complexes.
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Affiliation(s)
- Eric Gouré
- CEA, iRTSV/LCBM, pmb , F-38000 Grenoble, France
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Wang JJ, Zhang YJ, Chen J, Zhang YH. Four new metal–organic coordination polymers with non-coordinating biphenyl groups: Synthesis, characterization, magnetic and luminescent properties. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2013.11.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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O'Neil EJ, Jiang H, Smith BD. Effect of Bridging Anions on the Structure and Stability of Phenoxide Bridged Zinc Dipicolylamine Coordination Complexes. Supramol Chem 2013; 25:315-322. [PMID: 23914128 PMCID: PMC3728083 DOI: 10.1080/10610278.2013.776170] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A series of four related phenol derivatives, with 2,2'-dipicolylamine substituents at the ortho positions, were prepared and their Zn2+ coordination complexes studied by spectroscopic methods. X-ray crystal diffraction analysis of a dinuclear zinc complex with two bridging acetate anions showed a ternary structure with highly charged interior and lipophilic exterior, which helps explain why this class of water-soluble complexes can effectively diffuse through cell membranes. The stability of the dinuclear zinc complexes in aqueous solution was found to be strongly anion dependent; that is, bridging oxyanions, such as acetate and pyrophosphate, lock the two Zn2+ cations to the surrounding ligand and greatly enhance ligand/zinc affinity. Overall, the results provide new insight into the structural and mechanistic factors that control the recognition and chemosensing performance of phenoxide bridged dipicolylamine molecular probes.
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Affiliation(s)
- Edward J. O'Neil
- Department of Chemistry and Biochemistry, University of Notre Dame, 2365 Nieuwland Science Hall, Notre Dame, IN 46556
| | - Hua Jiang
- Department of Chemistry and Biochemistry, University of Notre Dame, 2365 Nieuwland Science Hall, Notre Dame, IN 46556
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Bradley D. Smith
- Department of Chemistry and Biochemistry, University of Notre Dame, 2365 Nieuwland Science Hall, Notre Dame, IN 46556
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Camargo MA, Neves A, Bortoluzzi AJ, Szpoganicz B, Fischer FL, Terenzi H, Serra OA, Santos VG, Vaz BG, Eberlin MN. Efficient Phosphodiester Hydrolysis by Luminescent Terbium(III) and Europium(III) Complexes. Inorg Chem 2010; 49:6013-25. [DOI: 10.1021/ic100549u] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Maryene A. Camargo
- Laboratório de Bioinorgânica e Crystalografia (LABINC), Departamento de Química
| | - Ademir Neves
- Laboratório de Bioinorgânica e Crystalografia (LABINC), Departamento de Química
| | | | - Bruno Szpoganicz
- Laboratório de Bioinorgânica e Crystalografia (LABINC), Departamento de Química
| | | | - Hernán Terenzi
- Centro de Biologia Molecular Estrutural, Departamento de Bioquímica, CCB
| | - Osvaldo A. Serra
- Laboratório de Terras Raras (FFCLRP-USP), Departamento de Química, Universidade de São Paulo, Avenue Bandeirantes 3900, 14040-901, Ribeirão Preto, São Paulo, Brazil
| | - Vanessa G. Santos
- Laboratório ThoMSon de Espectrometria de Massas, Instituto de Química, Universidade Estadual de Campinas, 13083-970, Campinas, São Paulo, Brazil
| | - Boniek G. Vaz
- Laboratório ThoMSon de Espectrometria de Massas, Instituto de Química, Universidade Estadual de Campinas, 13083-970, Campinas, São Paulo, Brazil
| | - Marcos N. Eberlin
- Laboratório ThoMSon de Espectrometria de Massas, Instituto de Química, Universidade Estadual de Campinas, 13083-970, Campinas, São Paulo, Brazil
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Gahan LR, Smith SJ, Neves A, Schenk G. Phosphate Ester Hydrolysis: Metal Complexes As Purple Acid Phosphatase and Phosphotriesterase Analogues. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200900231] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Lawrence R. Gahan
- School of Chemistry and Molecular BioSciences, The University of Queensland, 4072 Brisbane, Australia
| | - Sarah J. Smith
- School of Chemistry and Molecular BioSciences, The University of Queensland, 4072 Brisbane, Australia
| | - Ademir Neves
- Laboratorio de Bioinorgânica e Cristalografica, Departamento de Química, Universidade Federal de Santa Catarina, 88040‐900, Florianópolis, SC, Brazil
| | - Gerhard Schenk
- School of Chemistry and Molecular BioSciences, The University of Queensland, 4072 Brisbane, Australia
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Tian JL, Gu W, Yan SP, Liao DZ, Jiang ZH. Synthesis, Structures and Magnetic Properties of Two Binuclear Cobalt(II) Complexes Bridged by Bis(p-nitrophenyl) Phosphate or Diphenylphosphinate Ion. Z Anorg Allg Chem 2008. [DOI: 10.1002/zaac.200800130] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Ma XF, Tian JL, Gu W, Gao S, Yan SP, Liao DZ. Synthesis, structure and magnetic properties of one chiral heptanuclear Fe cluster: {Fe[(FeL)2(μ2-OH)]3(μ2-OH)6}·13H2O. INORG CHEM COMMUN 2008. [DOI: 10.1016/j.inoche.2007.11.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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