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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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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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Kunde T, Pausch T, Guńka PA, Krzyżanowski M, Kasprzak A, Schmidt BM. Fast, solvent-free synthesis of Ferrocene-containing Organic Cages via dynamic covalent chemistry in the solid state. Chem Sci 2022; 13:2877-2883. [PMID: 35382473 PMCID: PMC8905640 DOI: 10.1039/d1sc06372c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 01/31/2022] [Indexed: 11/21/2022] Open
Abstract
A simple, solvent-free synthetic protocol towards the synthesis of organic self-assembled macromolecules has been established. By employing mechanochemistry using glassware readily available to every organic chemist, we were able to...
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Affiliation(s)
- Tom Kunde
- Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf Universitätsstraße 1 D-40225 Düsseldorf Germany http://www.bmschmidtlab.de
| | - Tobias Pausch
- Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf Universitätsstraße 1 D-40225 Düsseldorf Germany http://www.bmschmidtlab.de
| | - Piotr A Guńka
- Faculty of Chemistry, Warsaw University of Technology Noakowskiego Str. 3 00-664 Warsaw Poland
| | - Maurycy Krzyżanowski
- Faculty of Chemistry, Warsaw University of Technology Noakowskiego Str. 3 00-664 Warsaw Poland
| | - Artur Kasprzak
- Faculty of Chemistry, Warsaw University of Technology Noakowskiego Str. 3 00-664 Warsaw Poland
| | - Bernd M Schmidt
- Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf Universitätsstraße 1 D-40225 Düsseldorf Germany http://www.bmschmidtlab.de
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Krzyżanowski M, Nowicka AM, Kazimierczuk K, Durka K, Lulinski S, Kasprzak A. Design of a D3h-symmetry prismatic tris-(ferrocene-1,1ʹ-diyl) molecular cage bearing boronate ester linkages. Dalton Trans 2022; 51:10601-10611. [DOI: 10.1039/d2dt01306a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This paper presents a simple, highly selective, and efficient (isolated yield 68%) synthesis of a novel D3h-symmetry prismatic tris-(ferrocene-1,1ʹ-diyl) organic cage (FcB-cage) by incorporating the boronate ester as a linkage...
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