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Stogniy MY, Anufriev SA, Bogdanova EV, Gorodetskaya NA, Anisimov AA, Suponitsky KY, Grishin ID, Sivaev IB. Charge-compensated nido-carborane derivatives in the synthesis of iron(II) bis(dicarbollide) complexes. Dalton Trans 2024. [PMID: 38264799 DOI: 10.1039/d3dt03549b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2024]
Abstract
A series of stable iron(II) bis(dicarbollide) derivatives [8,8'-(RNHC(Et)HN)2-3,3'-Fe(1,2-C2B9H10)2] (R = Pr, R = Ph, (CH2)2OH, (CH2)3OH, (CH2)2NMe2) was prepared starting from FeCl2 or [FeCl2(dppe)] and the corresponding nido-carboranyl amidines [10-RNHC(Et)HN-7,8-C2B9H11]. In a similar way, the reactions of the oxonium derivatives of nido-carborane with FeCl2 in tetrahydrofuran in the presence of t-BuOK lead to the corresponding stable oxonium derivatives iron(II) bis(dicarbollide) [8,8'-(RR'O)2-3,3'-Fe(1,2-C2B9H10)2] (RR' = (CH2)4, (CH2)2O(CH2)2, (CH2)5; R = R' = Et), which can be alternatively prepared by the reaction of the parent iron(II) bis(dicarbollide) with tetrahydrofuran or 1,4-dioxane in the presence of Me2SO4. The cyclic voltammetry studies of the synthesized iron(II) bis(dicarbollide) derivatives revealed that the introduction of amidinium and oxonium substituents leads to a significant increase in the Fe2+/Fe3+ redox potential relative to the parent iron(II) bis(dicarbollide). The redox potentials of the oxonium derivatives are close to the redox potential of ferrocene and somewhat lower than redox potentials of sulfonium and phosphonium derivatives of iron(II) bis(dicarbollide).
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Affiliation(s)
- Marina Yu Stogniy
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russia.
- M.V. Lomonosov Institute of Fine Chemical Technology, MIREA - Russian Technological University, Moscow, Russia
| | - Sergey A Anufriev
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russia.
| | - Ekaterina V Bogdanova
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russia.
- M.V. Lomonosov Institute of Fine Chemical Technology, MIREA - Russian Technological University, Moscow, Russia
| | - Nadezhda A Gorodetskaya
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russia.
- M.V. Lomonosov Institute of Fine Chemical Technology, MIREA - Russian Technological University, Moscow, Russia
| | - Alexei A Anisimov
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russia.
| | - Kyrill Yu Suponitsky
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russia.
- G.V. Plekhanov Russian University of Economics, Moscow, Russia
| | - Ivan D Grishin
- Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia
| | - Igor B Sivaev
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russia.
- Faculty of Chemistry, National Research University Higher School of Economics (HSE University), Moscow, Russia
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Wen M, Erb W, Mongin F, Hurvois JP, Halauko YS, Ivashkevich OA, Matulis VE, Blot M, Roisnel T. From ferrocene to decasubstituted enantiopure ferrocene-1,1'-disulfoxide derivatives. Dalton Trans 2023; 52:3725-3737. [PMID: 36857669 DOI: 10.1039/d2dt03456e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
The functionalization of (R,R)-S,S'-di-tert-butylferrocene-1,1'-disulfoxide by deprotolithiation-electrophilic trapping sequences was studied towards polysubstituted, enantiopure derivatives for which the properties were determined. While the 2,2'-disubstituted ferrocene derivatives were obtained as expected, subsequent functionalization of the 2,2'-di(phenylthio) and 2,2'-bis(trimethylsilyl) derivatives occurred primarily at the 4- or 4,4'-positions. This unusual regioselectivity was discussed in detail in light of pKa values and structural data. The less sterically hindered 2,2'-difluorinated derivative yielded the expected 1,1',2,2',3,3'-hexasubstituted ferrocenes by the deprotometallation-trapping sequence. Further functionalization proved possible, leading to early examples of 1,1',2,2',3,3',4,4'-octa, nona and even decasubstituted ferrocenes. Some of the newly prepared ferrocene-1,1'-disulfoxides were tested as ligands for enantioselective catalysis and their electrochemical properties were investigated.
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Affiliation(s)
- Min Wen
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
| | - William Erb
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
| | - Florence Mongin
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
| | - Jean-Pierre Hurvois
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
| | - Yury S Halauko
- Department of Chemistry, Belarusian State University, 4 Nezavisimosti Av., 220030 Minsk, Belarus.
| | - Oleg A Ivashkevich
- Laboratory for Chemistry of Condensed Systems, Research Institute for Physical Chemical Problems of Belarusian State University, 14 Leningradskaya St., 220030 Minsk, Belarus
| | - Vadim E Matulis
- Department of Chemistry, Belarusian State University, 4 Nezavisimosti Av., 220030 Minsk, Belarus.
| | - Marielle Blot
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
| | - Thierry Roisnel
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
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Exploring the Emergent Redox Chemistry of Pd(II) Nodes with Pendant Ferrocenes: From Precursors, through Building Blocks, to Self-Assemblies. INORGANICS 2023. [DOI: 10.3390/inorganics11030122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023] Open
Abstract
Energy-relevant small molecule activations and related processes are often multi-electron in nature. Ferrocene is iconic for its well-behaved one-electron chemistry, and it is often used to impart redox activity to self-assembled architectures. When multiple ferrocenes are present as pendant groups in a single structure, they often behave as isolated sites with no separation of their redox events. Herein, we study a suite of molecules culminating in a self-assembled palladium(II) truncated tetrahedron (TT) with six pendant ferrocene moieties using the iron(III/II) couple to inform about the electronic structure and, in some cases, subsequent reactivity. Notably, although known ferrocene-containing metallacycles and cages show simple reversible redox chemistry, this TT undergoes a complex multi-step electrochemical mechanism upon oxidation. The electrochemical behavior was observed by voltammetric and spectroelectrochemical techniques and suggests that the initial Fc-centered oxidation is coupled to a subsequent change in species solubility and deposition of a film onto the working electrode, which is followed by a second separable electrochemical oxidation event. The complicated electrochemical behavior of this self-assembly reveals emergent properties resulting from organizing multiple ferrocene subunits into a discrete structure. We anticipate that such structures may provide the basis for multiple charge separation events to drive important processes related to energy capture, storage, and use, especially as the electronic communication between sites is further tuned.
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Malischewski M, Sievers R, Parche J, Kub NG. Synthesis and Coordination Chemistry of Fluorinated Cyclopentadienyl Ligands. Synlett 2023. [DOI: 10.1055/s-0042-1751426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
AbstractThe incorporation of fluorinated substituents in cyclopentadienyl anions leads to distinct changes in the properties of the corresponding metal complexes, e.g., with regards to electrochemical properties or metal–ligand bonding energies. This review summarizes the synthetic challenges of the preparation and coordination of fluorinated cyclopentadienyl anions.1 Introduction2 Fluorinated Cyclopentadienyls3 Cyclopentadienyls with One CF3 Group4 Cyclopentadienyls with Four CF3 Groups5 Cyclopentadienyls with Five CF3 Groups6 Cyclopentadienyls with ‘Fluorous Ponytails’7 Cyclopentadienyls with C6F5 Groups8 Trends in Interaction Energies9 Conclusion
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Rupf SM, Dimitrova IS, Schröder G, Malischewski M. Preparation and One-Electron Oxidation of Decabromoferrocene. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00157] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Susanne M. Rupf
- Freie Universität Berlin, Fabeckstraße 34-36, 14195 Berlin, Germany
| | | | - Gabriel Schröder
- Freie Universität Berlin, Fabeckstraße 34-36, 14195 Berlin, Germany
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Celedón S, Hamon P, Artigas V, Fuentealba M, Kahlal S, Carrillo D, Saillard JY, Hamon JR, Manzur C. Ferrocene functionalized enantiomerically pure Schiff bases and their Zn( ii) and Pd( ii) complexes: a spectroscopic, crystallographic, electrochemical and computational investigation. NEW J CHEM 2022. [DOI: 10.1039/d1nj06106b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
A combination of X-ray diffraction, IR, UV-vis and NMR spectroscopy together with computational methods was used to characterize and study the properties of the title compounds.
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Affiliation(s)
- Salvador Celedón
- Laboratorio de Química Inorgánica, Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Avenida Universidad 330, Curauma, Valparaíso, Chile
| | - Paul Hamon
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226, F-35000 Rennes, France
| | - Vania Artigas
- Laboratorio de Cristalografía, Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Avenida Universidad 330, Curauma, Valparaíso, Chile
| | - Mauricio Fuentealba
- Laboratorio de Cristalografía, Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Avenida Universidad 330, Curauma, Valparaíso, Chile
| | - Samia Kahlal
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226, F-35000 Rennes, France
| | - David Carrillo
- Laboratorio de Química Inorgánica, Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Avenida Universidad 330, Curauma, Valparaíso, Chile
| | - Jean-Yves Saillard
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226, F-35000 Rennes, France
| | - Jean-René Hamon
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226, F-35000 Rennes, France
| | - Carolina Manzur
- Laboratorio de Química Inorgánica, Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Avenida Universidad 330, Curauma, Valparaíso, Chile
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