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Szalóki G, Babinot J, Martin-Diaconescu V, Mallet-Ladeira S, García-Rodeja Y, Miqueu K, Bourissou D. Ligand-enabled oxidation of gold( i) complexes with o-quinones. Chem Sci 2022; 13:10499-10505. [PMID: 36277619 PMCID: PMC9473537 DOI: 10.1039/d2sc03724f] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 08/03/2022] [Indexed: 11/30/2022] Open
Abstract
Chelating P^P and hemilabile P^N ligands were found to trigger the oxidation of Au(i) complexes by o-benzoquinones. The ensuing Au(iii) catecholate complexes have been characterized by NMR spectroscopy, single crystal X-ray diffraction and X-ray absorption spectroscopy. They adopt tetracoordinate square-planar structures. Reactivity studies substantiate the reversibility of the transformation. In particular, the addition of competing ligands such as chloride and alkenes gives back Au(i) complexes with concomitant release of the o-quinone. DFT calculations provide insight about the structure and relative stability of the Au(i) o-quinone and Au(iii) catecholate forms, and shed light on the 2-electron transfer from gold to the o-quinone. Chelating P^P and hemilabile P^N ligands were found to trigger the oxidation of Au(i) complexes by o-benzoquinones.![]()
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Affiliation(s)
- György Szalóki
- Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA, UMR 5069), CNRS, Université Toulouse III – Paul Sabatier, 118 Route de Narbonne, Toulouse 31062, Cedex 09, France
| | - Julien Babinot
- Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA, UMR 5069), CNRS, Université Toulouse III – Paul Sabatier, 118 Route de Narbonne, Toulouse 31062, Cedex 09, France
| | - Vlad Martin-Diaconescu
- ALBA Synchrotron – CELLS, Carrer de la Llum 2-26, Cerdanyola del Vallès 08290, Barcelona, Spain
| | - Sonia Mallet-Ladeira
- Institut de Chimie de Toulouse (UAR 2599), 118 Route de Narbonne, Toulouse 31062, Cedex 09, France
| | - Yago García-Rodeja
- Institut des Sciences Analytiques et Physico-Chimie pour l’Environnement et les Matériaux (IPREM, UMR 5254), CNRS, Université de Pau et des Pays de l’Adour E2S UPPA, Hélioparc, 2 Avenue du Président Angot, Pau 64053, Cedex 09, France
| | - Karinne Miqueu
- Institut des Sciences Analytiques et Physico-Chimie pour l’Environnement et les Matériaux (IPREM, UMR 5254), CNRS, Université de Pau et des Pays de l’Adour E2S UPPA, Hélioparc, 2 Avenue du Président Angot, Pau 64053, Cedex 09, France
| | - Didier Bourissou
- Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA, UMR 5069), CNRS, Université Toulouse III – Paul Sabatier, 118 Route de Narbonne, Toulouse 31062, Cedex 09, France
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Martyanov KA, Cherkasov VK, Abakumov GA, Samsonov MA, Khrizanforova VV, Budnikova YH, Kuropatov VA. New sterically-hindered o-quinones annelated with metal-dithiolates: regiospecificity in oxidative addition reactions of a bifacial ligand to the Pd and Pt complexes. Dalton Trans 2016; 45:7400-5. [PMID: 27040038 DOI: 10.1039/c6dt00769d] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An unusual reactivity of sterically hindered o-quinones with an annelated dithiete ring towards coordination at a dithiolene site has been discovered. New Pd and Pt dithiolate complexes have been synthesized. The reaction proceeds regioselectively, and the quinone site of the parent ligand is not affected even while using an excess of the metal complex. Both Pt and Pd complexes display a square planar surrounding for the metal ion and have very similar NMR, IR and UV/Vis spectra. Surprisingly, being coordinated at the dithiolene site to the metal, the ligand exhibits activity like an o-quinone, it could be reduced with different metals resulting in the corresponding o-semiquinonates which were confirmed by EPR spectroscopy. It was shown that an unpaired electron exhibits HFC with the phosphorus nuclei of phosphine ligands coordinated to the metal ions at the dithiolene site of the molecule.
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Affiliation(s)
- K A Martyanov
- G.A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences, 603950, GSP-445, Tropinina str. 49, Nizhny Novgorod, Russia.
| | - V K Cherkasov
- G.A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences, 603950, GSP-445, Tropinina str. 49, Nizhny Novgorod, Russia.
| | - G A Abakumov
- G.A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences, 603950, GSP-445, Tropinina str. 49, Nizhny Novgorod, Russia.
| | - M A Samsonov
- G.A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences, 603950, GSP-445, Tropinina str. 49, Nizhny Novgorod, Russia.
| | - V V Khrizanforova
- Arbuzov Institute of Organic and Physical Chemistry of Russian Academy of Sciences, 420088, Arbuzov str. 8, Kazan, Russia
| | - Y H Budnikova
- Arbuzov Institute of Organic and Physical Chemistry of Russian Academy of Sciences, 420088, Arbuzov str. 8, Kazan, Russia
| | - V A Kuropatov
- G.A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences, 603950, GSP-445, Tropinina str. 49, Nizhny Novgorod, Russia.
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Hirani B, Li J, Djurovich PI, Yousufuddin M, Oxgaard J, Persson P, Wilson SR, Bau R, Goddard WA, Thompson ME. Cyclometallated Iridium and Platinum Complexes with Noninnocent Ligands. Inorg Chem 2007; 46:3865-75. [PMID: 17439204 DOI: 10.1021/ic061556b] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The electronic properties of the cyclometalated (CwedgeN) complexes of iridium and platinum metals with a catechol ligand have been studied experimentally and computationally. The synthesis and characterization of (p-tolylpyridine)Ir(3,5-di-tert-butylcatechol) (abbreviated Ir-sq) and (2,4-diflorophenylpyridine)Pt(3,5-di-tert-butylcatechol) (abbreviated Pt-sq) are reported along with their structural, spectral, and electrochemical properties. Reaction of the 3,5-di-tert-butylcatechol (DTBCat) ligand with the prepared cyclometalated metal complex was carried out in air in the presence of a base. The resulting complexes are air stable and are paramagnetic with the unpaired electron residing mainly on the catechol ligand. The bond lengths obtained from X-ray structure analysis and the theoretical results suggest the semiquinone form of the catechol ligand. Low-energy, intense (approximately 10(3) M-1 cm-1) transitions are observed in the visible to near-infrared region (600-700 nm) of the absorption spectra of the metal complexes. Electrochemically, the complexes exhibit a reversible reduction of the semiquinone form to the catechol form of the ligand and an irreversible oxidation to the unstable quinone form of the ligand. The noninnocent catechol ligand plays a significant role in the electronic properties of the metal complexes. Density functional theory (DFT) and time-dependent density functional theory (TD-DFT) calculations on the two open-shell molecules provide the ground-state and excited-state energies of the molecular orbitals involved in the observed low-energy transitions. The spin density in the two complexes resides mainly on the catechol ligand. The intense transition arises from excitation of the beta electron from a HOMO-n (n = 1 or 2 here) to the LUMO, rather than from the excitation of the unpaired alpha electron.
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Affiliation(s)
- Bhavna Hirani
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, USA
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Pierpont CG, Downs HH. Crystal and molecular structure of the oxidative addition product of tetrachloro-1,2-benzoquinone to tris(triphenylphosphine)palladium(0), (3,4,5,6-tetrachloro-1,2-benzenediolato)bis(triphenylphosphine)palladium(0). Inorg Chem 2002. [DOI: 10.1021/ic50144a028] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ghedini M, Dolcetti G, Giovannitti B, Denti G. Quinone adducts of transition metal nitrosyl complexes. Inorg Chem 2002. [DOI: 10.1021/ic50173a031] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Morrison WH, Hendrickson DN. Electron transfer in oxidized biferrocene, biferrocenylene, and [1.1]ferrocenophane systems. Inorg Chem 2002. [DOI: 10.1021/ic50152a007] [Citation(s) in RCA: 152] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Osman FH, El-Samahy FA. Reactions of alpha-diketones and omicron-quinones with phosphorus compounds. Chem Rev 2002; 102:629-77. [PMID: 11890753 DOI: 10.1021/cr0000325] [Citation(s) in RCA: 92] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fayez H Osman
- Department of Pesticide Chemistry, National Research Centre, Dokki, Cairo 12622, Egypt.
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Palladium and cobalt complexes of substituted quinoline, bipyridine and phenanthroline as catalysts for electrochemical reduction of carbon dioxide. Electrochim Acta 1997. [DOI: 10.1016/s0013-4686(96)00453-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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The formation of dinuclear catecholato copper(II) complexes from strongly oxidizing o-quinones and copper(I) halides. Inorganica Chim Acta 1985. [DOI: 10.1016/s0020-1693(00)84324-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Gandolfi O, Dolcetti G, Ghedini M. Nucleophilic substitution reactions of o-catechols with iridium(III) carbonyl complexes: Novel series of functionalized Ir(III) complexes. Inorganica Chim Acta 1982. [DOI: 10.1016/s0020-1693(00)87308-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Gandolfi O, Dolcetti G, Ghedini M. Interaction of carboxyl functionalized catechols with palladium(II) and platinum(II) halide complexes. TRANSIT METAL CHEM 1980. [DOI: 10.1007/bf01396896] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Burns R, McAuliffe C. 1,2-Dithiolene Complexes of Transition Metals. ADVANCES IN INORGANIC CHEMISTRY AND RADIOCHEMISTRY 1979. [DOI: 10.1016/s0065-2792(08)60084-9] [Citation(s) in RCA: 193] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Muto S, Tasaka K, Kamiya Y. Reaction of Dioxygen Complexes with Catechols. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1977. [DOI: 10.1246/bcsj.50.2493] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Ellermann J, Schindler JF. Komplexchemie polyfunktioneller Liganden, XXXVI: Über Halogeno- und Pseudohalogeno-kobalt(I)-Komplexe des tritertiären Phosphins 1,1,1-Tris(diphenylphosphinomethyl)äthan. ACTA ACUST UNITED AC 1976. [DOI: 10.1002/cber.19761090331] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Tripathi S, Srivastava S, Mani R, Shrimal A. Advances in platinum metal carbonyls and their substituted derivatives. II. Rhodium, iridium, palladium and platinum carbonyls. Inorganica Chim Acta 1976. [DOI: 10.1016/s0020-1693(00)81992-1] [Citation(s) in RCA: 30] [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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Reaction of the low-valent transition metal complexes with non-transition organometallic compounds. J Organomet Chem 1975. [DOI: 10.1016/s0022-328x(00)89476-0] [Citation(s) in RCA: 46] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Elson IH, Morrell DG, Kochi JK. Electron transfer from d10 species: A possible initiation for free radical pathways in oxidative additions. J Organomet Chem 1975. [DOI: 10.1016/s0022-328x(00)88784-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Ukai T, Kawazura H, Ishii Y, Bonnet J, Ibers JA. Chemistry of dibenzylideneacetone-palladium(0) complexes. J Organomet Chem 1974. [DOI: 10.1016/s0022-328x(00)91277-4] [Citation(s) in RCA: 557] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Barlex D, Kemmitt R, Littlecott G. Reactivity of olefin an acetylene complexes of platinum(0) towards tetrachloro-o-benzoquinone. J Organomet Chem 1972. [DOI: 10.1016/s0022-328x(00)81783-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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