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Sivaev IB. Bis(Dicarbollide) Complexes of Transition Metals: How Substituents in Dicarbollide Ligands Affect the Geometry and Properties of the Complexes. Molecules 2024; 29:3510. [PMID: 39124915 PMCID: PMC11314212 DOI: 10.3390/molecules29153510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2024] [Revised: 07/23/2024] [Accepted: 07/23/2024] [Indexed: 08/12/2024] Open
Abstract
The interaction between different types of substituents in dicarbollide ligands and their influence on the stabilization of various rotational conformers (rotamers) of transition metal bis(dicarbollide) complexes [3,3'-M(1,2-C2B9H11)2]- are considered. It has been shown that the formation of intramolecular CH···X hydrogen bonds between dicarbollide ligands is determined by the size of the proton acceptor atom X rather than its electronegativity. Due to the stabilization of rotamers with different dipole moments, intramolecular hydrogen bonds between ligands in transition metal bis(dicarbollide) complexes can have a significant impact on the biological properties of their derivatives. In the presence of external complexing metals, weak intramolecular CH···X hydrogen bonds can be broken to form stronger X->M donor-acceptor bonds. This process is accompanied by the mutual rotation of dicarbollide ligands and can be used in sensors and molecular switches based on transition metal bis(dicarbollide) complexes.
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Affiliation(s)
- Igor B Sivaev
- A. N. Nesmeyanov Institute of Organoelement Compounds, 28 Vavilov Str., Moscow 119991, Russia
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Pazderová L, Tüzün EZ, Bavol D, Litecká M, Fojt L, Grűner B. Chemistry of Carbon-Substituted Derivatives of Cobalt Bis(dicarbollide)(1 -) Ion and Recent Progress in Boron Substitution. Molecules 2023; 28:6971. [PMID: 37836814 PMCID: PMC10574808 DOI: 10.3390/molecules28196971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 09/27/2023] [Accepted: 10/03/2023] [Indexed: 10/15/2023] Open
Abstract
The cobalt bis(dicarbollide)(1-) anion (1-), [(1,2-C2B9H11)2-3,3'-Co(III)](1-), plays an increasingly important role in material science and medicine due to its high chemical stability, 3D shape, aromaticity, diamagnetic character, ability to penetrate cells, and low cytotoxicity. A key factor enabling the incorporation of this ion into larger organic molecules, biomolecules, and materials, as well as its capacity for "tuning" interactions with therapeutic targets, is the availability of synthetic routes that enable easy modifications with a wide selection of functional groups. Regarding the modification of the dicarbollide cage, syntheses leading to substitutions on boron atoms are better established. These methods primarily involve ring cleavage of the ether rings in species containing an oxonium oxygen atom connected to the B(8) site. These pathways are accessible with a broad range of nucleophiles. In contrast, the chemistry on carbon vertices has remained less elaborated over the previous decades due to a lack of reliable methods that permit direct and straightforward cage modifications. In this review, we present a survey of methods based on metalation reactions on the acidic C-H vertices, followed by reactions with electrophiles, which have gained importance in only the last decade. These methods now represent the primary trends in the modifications of cage carbon atoms. We discuss the scope of currently available approaches, along with the stereochemistry of reactions, chirality of some products, available types of functional groups, and their applications in designing unconventional drugs. This content is complemented with a report of the progress in physicochemical and biological studies on the parent cobalt bis(dicarbollide) ion and also includes an overview of recent syntheses and emerging applications of boron-substituted compounds.
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Affiliation(s)
- Lucia Pazderová
- Institute of Inorganic Chemistry of the Czech Academy of Sciences, 250 68 Řež, Czech Republic; (L.P.); (E.Z.T.); (D.B.); (M.L.)
| | - Ece Zeynep Tüzün
- Institute of Inorganic Chemistry of the Czech Academy of Sciences, 250 68 Řež, Czech Republic; (L.P.); (E.Z.T.); (D.B.); (M.L.)
- Department of Inorganic Chemistry, Faculty of Natural Science, Charles University, Hlavova 2030/8, 128 43 Prague, Czech Republic
| | - Dmytro Bavol
- Institute of Inorganic Chemistry of the Czech Academy of Sciences, 250 68 Řež, Czech Republic; (L.P.); (E.Z.T.); (D.B.); (M.L.)
| | - Miroslava Litecká
- Institute of Inorganic Chemistry of the Czech Academy of Sciences, 250 68 Řež, Czech Republic; (L.P.); (E.Z.T.); (D.B.); (M.L.)
| | - Lukáš Fojt
- Institute of Biophysics of the Czech Academy of Sciences, Královopolská 135, 612 00 Brno, Czech Republic;
| | - Bohumír Grűner
- Institute of Inorganic Chemistry of the Czech Academy of Sciences, 250 68 Řež, Czech Republic; (L.P.); (E.Z.T.); (D.B.); (M.L.)
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Buades AB, Kelemen Z, Arderiu VS, Zaulet A, Viñas C, Teixidor F. A fast and simple B-C bond formation in metallacarboranes avoiding halometallacarboranes and transition metal catalysts. Dalton Trans 2020; 49:3525-3531. [PMID: 32108183 DOI: 10.1039/c9dt04695j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
An electrophilic substitution on metallacarboranes by using a stabilized carbocation that can be made in situ is reported for the first time. This new synthetic methodology provides a new perspective on easy metallacarborane derivatization with organic fragments, which enhances the properties of both fragments and widens their possible applications.
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Affiliation(s)
- Ana B Buades
- Institut de Ciència de Materials de Barcelona - CSIC, Campus UAB, 08193, Bellaterra, Barcelona, Spain.
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Shmal’ko AV, Anufriev SA, Anisimov AA, Stogniy MY, Sivaev IB, Bregadze VI. Synthesis of cobalt and nickel 6,6′-diphenylbis(dicarbollides). Russ Chem Bull 2019. [DOI: 10.1007/s11172-019-2547-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Stogniy MY, Erokhina SA, Suponitsky KY, Anisimov AA, Sivaev IB, Bregadze VI. Nucleophilic addition reactions to the ethylnitrilium derivative of nido-carborane 10-EtCN-7,8-C2B9H11. NEW J CHEM 2018. [DOI: 10.1039/c8nj04192j] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Stable imidates 10-EtC(OR)HN-7,8-C2B9H11 and thioimidates 10-EtC(SR)HN-7,8-C2B9H11 were synthesized via the reactions of a nitrilium derivative of nido-carborane 10-EtCN-7,8-C2B9H11 with alcohols and thiols.
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Affiliation(s)
- Marina Yu. Stogniy
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences
- Moscow
- Russia
| | - Svetlana A. Erokhina
- 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
| | | | - Igor B. Sivaev
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences
- Moscow
- Russia
| | - Vladimir I. Bregadze
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences
- Moscow
- Russia
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Sivaev IB. Ferrocene and Transition Metal Bis(Dicarbollides) as Platform for Design of Rotatory Molecular Switches. Molecules 2017; 22:molecules22122201. [PMID: 29232924 PMCID: PMC6149777 DOI: 10.3390/molecules22122201] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Revised: 11/27/2017] [Accepted: 12/01/2017] [Indexed: 11/16/2022] Open
Abstract
Design of rotatory molecular switches based on extremely stable sandwich organometallic complexes ferrocene and bis(dicarbollide) complexes of transition metals is reviewed. The "on"-"off" switching in these systems can be controlled by various external stimuli such as change of the solution pH, interactions with coordinating species or redox reactions involving the central atom or substituents in the ligands.
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Affiliation(s)
- Igor B Sivaev
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Str., Moscow 119991, Russia.
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Kosenko I, Lobanova I, Ananyev I, Laskova J, Semioshkin A, Bregadze V. Reactions of bromine-bridged cobalt bis(1,2-dicarbollide) anion with arenes and nucleophiles. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2016.04.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Kazakov GS, Stogniy MY, Sivaev IB, Suponitsky KY, Godovikov IA, Kirilin AD, Bregadze VI. Synthesis of crown ethers with the incorporated cobalt bis(dicarbollide) fragment. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.05.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Kaszyński P, Ringstrand B. Functionalization ofcloso-Borates via Iodonium Zwitterions. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201411858] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Kaszyński P, Ringstrand B. Functionalization ofcloso-Borates via Iodonium Zwitterions. Angew Chem Int Ed Engl 2015; 54:6576-81. [DOI: 10.1002/anie.201411858] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Revised: 03/04/2015] [Indexed: 11/08/2022]
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Syntheses, structures, and electroconductivity of bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF) and bis(methylenedithio)tetrathiafulvalene (BMDT-TTF) salts with cobalt 8,8′-dichloro-3,3′-bis(1,2-dicarbollide). Russ Chem Bull 2015. [DOI: 10.1007/s11172-014-0598-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kosenko ID, Lobanova IA, Ananyev IV, Godovikov IA, Chekulaeva LA, Starikova ZA, Qi S, Bregadze VI. Novel alkoxy derivatives of cobalt bis(1,2-dicarbollide). J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2014.07.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Farràs P, Musteti AD, Rojo I, Viñas C, Teixidor F, Light ME. Widely Applicable Metallacarborane Reagents for π-Conjugated Systems. Inorg Chem 2014; 53:5803-9. [DOI: 10.1021/ic500615k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pau Farràs
- Institut
de Ciència de Materials de Barcelona (CSIC), Campus de la U.A.B., E-08193 Bellaterra, Barcelona, Spain
| | - Ana D. Musteti
- Institut
de Ciència de Materials de Barcelona (CSIC), Campus de la U.A.B., E-08193 Bellaterra, Barcelona, Spain
| | - Isabel Rojo
- Institut
de Ciència de Materials de Barcelona (CSIC), Campus de la U.A.B., E-08193 Bellaterra, Barcelona, Spain
| | - Clara Viñas
- Institut
de Ciència de Materials de Barcelona (CSIC), Campus de la U.A.B., E-08193 Bellaterra, Barcelona, Spain
| | - Francesc Teixidor
- Institut
de Ciència de Materials de Barcelona (CSIC), Campus de la U.A.B., E-08193 Bellaterra, Barcelona, Spain
| | - Mark E. Light
- Chemistry, University of Southampton, SouthamptonSO17 1BJ, United Kingdom
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Timofeev SV, Sivaev IB, Prikaznova EA, Bregadze VI. Transition metal complexes with charge-compensated dicarbollide ligands. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2013.08.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Sivaev IB, Prikaznov AV, Anufriev SA. On relative electronic effects of polyhedral boron hydrides. J Organomet Chem 2013. [DOI: 10.1016/j.jorganchem.2013.04.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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