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Komlyagina VI, Romashev NF, Besprozvannykh VK, Arakelyan J, Wu C, Chubarov AS, Bakaev IV, Soh YK, Abramov PA, Cheung KL, Kompan'kov NB, Ryadun AA, Babak MV, Gushchin AL. Effects of Bis(imino)acenaphthene (Bian)-Derived Ligands on the Cytotoxicity, DNA Interactions, and Redox Activity of Palladium(II) Bipyridine Complexes. Inorg Chem 2023. [PMID: 37418540 DOI: 10.1021/acs.inorgchem.3c01172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/09/2023]
Abstract
A series of heteroleptic bipyridine Pd(II) complexes based on 1,2-bis[(2,6-diisopropylphenyl)imino]acenaphthene (dpp-Bian) or 1,2-bis[(2,4,6-trimethylphenyl)imino]acenaphthene (tmp-Bian) were prepared. All complexes were fully characterized by spectrochemical methods, and their crystal structures were confirmed by X-ray diffraction analysis. The 72 h stability of heteroleptic bipyridine Pd(II) complexes with Bian ligands under physiological conditions was investigated using 1H NMR spectroscopy. The anticancer activity of all complexes was assessed in a panel of cancer cell lines in comparison with uncoordinated ligands and clinically used drugs cisplatin and doxorubicin. The ability of the complexes to bind DNA was investigated using several methods, including EtBr replacement assay, density functional theory calculations, circular dichroism spectroscopy, DNA gel electrophoresis, and TUNEL assay. The electrochemical activity of all complexes and the uncoordinated ligands was studied using cyclic voltammetry, and reactive oxygen species production in cancer cells was investigated using confocal microscopy. Heteroleptic bipyridine PdII-Bian complexes were cytotoxic in a low micromolar concentration range and showed some selectivity toward cancer cells in comparison with noncancerous MRC-5 lung fibroblasts.
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Affiliation(s)
- Veronika I Komlyagina
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences (SB RAS), 3 Acad. Lavrentiev Avenue, Novosibirsk 630090, Russia
- Novosibirsk State University, 1 Pirogov Street, Novosibirsk 630090, Russia
| | - Nikolai F Romashev
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences (SB RAS), 3 Acad. Lavrentiev Avenue, Novosibirsk 630090, Russia
| | - Victoria K Besprozvannykh
- Drug Discovery Lab, Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong SAR 999077, People's Republic of China
| | - Jemma Arakelyan
- Drug Discovery Lab, Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong SAR 999077, People's Republic of China
| | - Chengnan Wu
- Drug Discovery Lab, Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong SAR 999077, People's Republic of China
| | - Alexey S Chubarov
- Novosibirsk State University, 1 Pirogov Street, Novosibirsk 630090, Russia
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences (SB RAS), 8 Lavrentiev Avenue, Novosibirsk 630090, Russia
| | - Ivan V Bakaev
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences (SB RAS), 3 Acad. Lavrentiev Avenue, Novosibirsk 630090, Russia
| | - Yee Kiat Soh
- Drug Discovery Lab, Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong SAR 999077, People's Republic of China
| | - Pavel A Abramov
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences (SB RAS), 3 Acad. Lavrentiev Avenue, Novosibirsk 630090, Russia
- Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, Tomsk 634034, Russian Federation
| | - Kin Leung Cheung
- Drug Discovery Lab, Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong SAR 999077, People's Republic of China
- Shun Lee Catholic Secondary School, 7 Shun Chi St, Cha Liu Au, Hong Kong, People's Republic of China
| | - Nikolai B Kompan'kov
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences (SB RAS), 3 Acad. Lavrentiev Avenue, Novosibirsk 630090, Russia
| | - Aleksey A Ryadun
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences (SB RAS), 3 Acad. Lavrentiev Avenue, Novosibirsk 630090, Russia
| | - Maria V Babak
- Drug Discovery Lab, Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong SAR 999077, People's Republic of China
| | - Artem L Gushchin
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences (SB RAS), 3 Acad. Lavrentiev Avenue, Novosibirsk 630090, Russia
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Romashev NF, Bakaev IV, Komlyagina VI, Abramov PA, Mirzaeva IV, Nadolinny VA, Lavrov AN, Kompan'kov NB, Mikhailov AA, Fomenko IS, Novikov AS, Sokolov MN, Gushchin AL. Iridium Complexes with BIAN-Type Ligands: Synthesis, Structure and Redox Chemistry. Int J Mol Sci 2023; 24:10457. [PMID: 37445638 DOI: 10.3390/ijms241310457] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 06/16/2023] [Accepted: 06/19/2023] [Indexed: 07/15/2023] Open
Abstract
A series of iridium complexes with bis(diisopropylphenyl)iminoacenaphtene (dpp-bian) ligands, [Ir(cod)(dpp-bian)Cl] (1), [Ir(cod)(NO)(dpp-bian)](BF4)2 (2) and [Ir(cod)(dpp-bian)](BF4) (3), were prepared and characterized by spectroscopic techniques, elemental analysis, X-ray diffraction analysis and cyclic voltammetry (CV). The structures of 1-3 feature a square planar backbone consisting of two C = C π-bonds of 1,5-cyclooctadiene (cod) and two nitrogen atoms of dpp-bian supplemented with a chloride ion (for 1) or a NO group (for 2) to complete a square-pyramidal geometry. In the nitrosyl complex 2, the Ir-N-O group has a bent geometry (the angle is 125°). The CV data for 1 and 3 show two reversible waves between 0 and -1.6 V (vs. Ag/AgCl). Reversible oxidation was also found at E1/2 = 0.60 V for 1. Magnetochemical measurements for 2 in a range from 1.77 to 300 K revealed an increase in the magnetic moment with increasing temperature up to 1.2 μB (at 300 K). Nitrosyl complex 2 is unstable in solution and loses its NO group to yield [Ir(cod)(dpp-bian)](BF4) (3). A paramagnetic complex, [Ir(cod)(dpp-bian)](BF4)2 (4), was also detected in the solution of 2 as a result of its decomposition. The EPR spectrum of 4 in CH2Cl2 is described by the spin Hamiltonian Ĥ = gβHŜ with S = 1/2 and gxx = gyy = 2.393 and gzz = 1.88, which are characteristic of the low-spin 5d7-Ir(II) state. DFT calculations were carried out in order to rationalize the experimental results.
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Affiliation(s)
- Nikolai F Romashev
- Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090, Russia
| | - Ivan V Bakaev
- Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090, Russia
- Department of Natural Sciences, Novosibirsk State University, Novosibirsk 630090, Russia
| | - Veronika I Komlyagina
- Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090, Russia
- Department of Natural Sciences, Novosibirsk State University, Novosibirsk 630090, Russia
| | - Pavel A Abramov
- Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090, Russia
- Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, Tomsk 634034, Russia
| | - Irina V Mirzaeva
- Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090, Russia
| | | | - Alexander N Lavrov
- Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090, Russia
| | | | - Artem A Mikhailov
- Laboratoire de Cristallographie, Résonance Magnétique et Modélisations, Université de Lorraine, CNRS, CRM2, UMR 7036, 54000 Nancy, France
| | - Iakov S Fomenko
- Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090, Russia
| | - Alexander S Novikov
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg 199034, Russia
- Research Institute of Chemistry, Peoples' Friendship University of Russia (RUDN University), Moscow 117198, Russia
| | - Maxim N Sokolov
- Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090, Russia
| | - Artem L Gushchin
- Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090, Russia
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Louw WJ, Radhakrishnan SG, Malan FP, Bezuidenhout DI. Synthesis, electronic structure and interaction of rhodium(I) and iridium(I) bisimine-acenaphthalene complexes with CO2. Polyhedron 2023. [DOI: 10.1016/j.poly.2023.116350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
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Voronina JK, Gavronova AS, Yambulatov DS, Nikolaevskii SA, Kiskin MA, Eremenko IL. Reactivity of 1,4-Diaza-1,3-Butadienes towards Cu(II) Pivalate: A Rare Case of Polymeric Structure Formed by Bridging Diazabutadiene Ligands. RUSS J COORD CHEM+ 2022. [DOI: 10.1134/s1070328422700154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Komlyagina VI, Romashev NF, Kokovkin VV, Gushchin AL, Benassi E, Sokolov MN, Abramov PA. Trapping of Ag + into a Perfect Six-Coordinated Environment: Structural Analysis, Quantum Chemical Calculations and Electrochemistry. Molecules 2022; 27:6961. [PMID: 36296553 PMCID: PMC9607289 DOI: 10.3390/molecules27206961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 10/12/2022] [Accepted: 10/12/2022] [Indexed: 11/25/2022] Open
Abstract
Self-assembly of (Bu4N)4[β-Mo8O26], AgNO3, and 2-bis[(2,6-diisopropylphenyl)-imino]acenaphthene (dpp-bian) in DMF solution resulted in the (Bu4N)2[β-{Ag(dpp-bian)}2Mo8O26] (1) complex. The complex was characterized by single crystal X-ray diffraction (SCXRD), X-ray powder diffraction (XRPD), diffuse reflectance (DR), infrared spectroscopy (IR), and elemental analysis. Comprehensive SCXRD studies of the crystal structure show the presence of Ag+ in an uncommon coordination environment without a clear preference for Ag-N over Ag-O bonding. Quantum chemical calculations were performed to qualify the nature of the Ag-N/Ag-O interactions and to assign the electronic transitions observed in the UV-Vis absorption spectra. The electrochemical behavior of the complex combines POM and redox ligand signatures. Complex 1 demonstrates catalytic activity in the electrochemical reduction of CO2.
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Affiliation(s)
- Veronika I. Komlyagina
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences (SB RAS), 3 Akad. Lavrentiev Ave., 630090 Novosibirsk, Russia
- Faculty of Natural Sciences, Novosibirsk State University, 2 Pirogova Str., 630090 Novosibirsk, Russia
| | - Nikolay F. Romashev
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences (SB RAS), 3 Akad. Lavrentiev Ave., 630090 Novosibirsk, Russia
| | - Vasily V. Kokovkin
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences (SB RAS), 3 Akad. Lavrentiev Ave., 630090 Novosibirsk, Russia
| | - Artem L. Gushchin
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences (SB RAS), 3 Akad. Lavrentiev Ave., 630090 Novosibirsk, Russia
| | - Enrico Benassi
- Faculty of Natural Sciences, Novosibirsk State University, 2 Pirogova Str., 630090 Novosibirsk, Russia
| | - Maxim N. Sokolov
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences (SB RAS), 3 Akad. Lavrentiev Ave., 630090 Novosibirsk, Russia
| | - Pavel A. Abramov
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences (SB RAS), 3 Akad. Lavrentiev Ave., 630090 Novosibirsk, Russia
- Institute of Natural Sciences and Mathematics, Ural Federal University, 620002 Ekaterinburg, Russia
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Mononuclear Oxidovanadium(IV) Complexes with BIAN Ligands: Synthesis and Catalytic Activity in the Oxidation of Hydrocarbons and Alcohols with Peroxides. Catalysts 2022. [DOI: 10.3390/catal12101168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Reactions of VCl3 with 1,2-Bis[(4-methylphenyl)imino]acenaphthene (4-Me-C6H4-bian) or 1,2-Bis[(2-methylphenyl)imino]acenaphthene (2-Me-C6H4-bian) in air lead to the formation of [VOCl2(R-bian)(H2O)] (R = 4-Me-C6H4 (1), 2-Me-C6H4 (2)). Thes complexes were characterized by IR and EPR spectroscopy as well as elemental analysis. Complexes 1 and 2 have high catalytic activity in the oxidation of hydrocarbons with hydrogen peroxide and alcohols with tert-butyl hydroperoxide in acetonitrile at 50 °С. The product yields are up to 40% for cyclohexane. Of particular importance is the addition of 2-pyrazinecarboxylic acid (PCA) as a co-catalyst. Oxidation proceeds mainly with the participation of free hydroxyl radicals, as evidenced by taking into account the regio- and bond-selectivity in the oxidation of n-heptane and methylcyclohexane, as well as the dependence of the reaction rate on the initial concentration of cyclohexane.
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Romashev NF, Bakaev IV, Komlyagina VI, Sokolov MN, Gushchin AL. SYNTHESIS AND STRUCTURE OF PALLADACYCLOPENTADIENYL COMPLEX WITH ACENAPHTHENE-1,2-DIIMINE LIGAND. J STRUCT CHEM+ 2022. [DOI: 10.1134/s002247662208011x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Romashev NF, Mirzaeva IV, Bakaev IV, Komlyagina VI, Komarov VY, Fomenko IS, Gushchin AL. STRUCTURE OF A BINUCLEAR RHODIUM(I) COMPLEX WITH THE ACENAPHTHENE- 1,2-DIIMINE LIGAND. J STRUCT CHEM+ 2022. [DOI: 10.1134/s0022476622020056] [Citation(s) in RCA: 2] [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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Romashev NF, Abramov PA, Bakaev IV, Fomenko IS, Samsonenko DG, Novikov AS, Tong KKH, Ahn D, Dorovatovskii PV, Zubavichus YV, Ryadun AA, Patutina OA, Sokolov MN, Babak MV, Gushchin AL. Heteroleptic Pd(II) and Pt(II) Complexes with Redox-Active Ligands: Synthesis, Structure, and Multimodal Anticancer Mechanism. Inorg Chem 2022; 61:2105-2118. [PMID: 35029379 DOI: 10.1021/acs.inorgchem.1c03314] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A series of heteroleptic square-planar Pt and Pd complexes with bis(diisopropylphenyl) iminoacenaphtene (dpp-Bian) and Cl, 1,3-dithia-2-thione-4,5-dithiolate (dmit), or 1,3-dithia-2-thione-4,5-diselenolate (dsit) ligands have been prepared and characterized by spectroscopic techniques, elemental analysis, X-ray diffraction analysis, and cyclic voltammetry (CV). The intermolecular noncovalent interactions in the crystal structures were assessed by density functional theory (DFT) calculations. The anticancer activity of Pd complexes in breast cancer cell lines was limited by their solubility. Pd(dpp-Bian) complexes with dmit and dsit ligands as well as an uncoordinated dpp-Bian ligand were devoid of cytotoxicity, while the [Pd(dpp-Bian)Cl2] complex was cytotoxic. On the contrary, all Pt(dpp-Bian) complexes demonstrated anticancer activity in a low micromolar concentration range, which was 8-20 times higher than the activity of cisplatin, and up to 2.5-fold selectivity toward cancer cells over healthy fibroblasts. The presence of a redox-active dpp-Bian ligand in Pt and Pd complexes resulted in the induction of reactive oxygen species (ROS) in cancer cells. In addition, these complexes were able to intercalate into DNA, indicating the dual mechanism of action.
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Affiliation(s)
- Nikolai F Romashev
- Nikolaev Institute of Inorganic Chemistry SB RAS, 3 Acad. Lavrentiev Ave., Novosibirsk 630090, Russia
| | - Pavel A Abramov
- Nikolaev Institute of Inorganic Chemistry SB RAS, 3 Acad. Lavrentiev Ave., Novosibirsk 630090, Russia
| | - Ivan V Bakaev
- Nikolaev Institute of Inorganic Chemistry SB RAS, 3 Acad. Lavrentiev Ave., Novosibirsk 630090, Russia
- Novosibirsk State University, 1 Pirogov st., Novosibirsk 630090, Russia
| | - Iakov S Fomenko
- Nikolaev Institute of Inorganic Chemistry SB RAS, 3 Acad. Lavrentiev Ave., Novosibirsk 630090, Russia
| | - Denis G Samsonenko
- Nikolaev Institute of Inorganic Chemistry SB RAS, 3 Acad. Lavrentiev Ave., Novosibirsk 630090, Russia
| | - Alexander S Novikov
- Institute of Chemistry, Saint Petersburg State University, Universitetskaya Nab., 7/9, Saint Petersburg 199034, Russia
| | - Kelvin K H Tong
- Drug Discovery Lab, Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong SAR 999077, People's Republic of China
| | - Dohyun Ahn
- Drug Discovery Lab, Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong SAR 999077, People's Republic of China
| | - Pavel V Dorovatovskii
- National Research Center "Kurchatov Institute", Kurchatov Square 1, Moscow 123182, Russia
| | - Yan V Zubavichus
- Boreskov Institute of Catalysis, 5 Acad. Lavrentiev Ave., Novosibirsk 630090, Russia
| | - Aleksey A Ryadun
- Nikolaev Institute of Inorganic Chemistry SB RAS, 3 Acad. Lavrentiev Ave., Novosibirsk 630090, Russia
| | - Olga A Patutina
- Institute of Chemical Biology and Fundamental Medicine, 8 Acad. Lavrentiev Ave., Novosibirsk 630090, Russia
| | - Maxim N Sokolov
- Nikolaev Institute of Inorganic Chemistry SB RAS, 3 Acad. Lavrentiev Ave., Novosibirsk 630090, Russia
| | - Maria V Babak
- Drug Discovery Lab, Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong SAR 999077, People's Republic of China
| | - Artem L Gushchin
- Nikolaev Institute of Inorganic Chemistry SB RAS, 3 Acad. Lavrentiev Ave., Novosibirsk 630090, Russia
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Novel Oxidovanadium Complexes with Redox-Active R-Mian and R-Bian Ligands: Synthesis, Structure, Redox and Catalytic Properties. Molecules 2021; 26:molecules26185706. [PMID: 34577177 PMCID: PMC8465707 DOI: 10.3390/molecules26185706] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 09/15/2021] [Accepted: 09/17/2021] [Indexed: 11/19/2022] Open
Abstract
A new monoiminoacenaphthenone 3,5-(CF3)2C6H3-mian (complex 2) was synthesized and further exploited, along with the already known monoiminoacenaphthenone dpp-mian, to obtain oxidovanadium(IV) complexes [VOCl2(dpp-mian)(CH3CN)] (3) and [VOCl(3,5-(CF3)2C6H3-bian)(H2O)][VOCl3(3,5-(CF3)2C6H3-bian)]·2.85DME (4) from [VOCl2(CH3CN)2(H2O)] (1) or [VCl3(THF)3]. The structure of all compounds was determined using X-ray structural analysis. The vanadium atom in these structures has an octahedral coordination environment. Complex 4 has an unexpected structure. Firstly, it contains 3,5-(CF3)2C6H3-bian instead of 3,5-(CF3)2C6H3-mian. Secondly, it has a binuclear structure, in contrast to 3, in which two oxovanadium parts are linked to each other through V=O···V interaction. This interaction is non-covalent in origin, according to DFT calculations. In structures 2 and 3, non-covalent π-π staking interactions between acenaphthene moieties of the neighboring molecules (distances are 3.36–3.40 Å) with an estimated energy of 3 kcal/mol were also found. The redox properties of the obtained compounds were studied using cyclic voltammetry in solution. In all cases, the reduction processes initiated by the redox-active nature of the mian or bian ligand were identified. The paramagnetic nature of complexes 3 and 4 has been proven by EPR spectroscopy. Complexes 3 and 4 exhibited high catalytic activity in the oxidation of alkanes and alcohols with peroxides. The yields of products of cyclohexane oxidation were 43% (complex 3) and 27% (complex 4). Based on the data regarding the study of regio- and bond-selectivity, it was concluded that hydroxyl radicals play the most crucial role in the reaction. The initial products in the reactions with alkanes are alkyl hydroperoxides, which are easily reduced to their corresponding alcohols by the action of triphenylphosphine (PPh3). According to the DFT calculations, the difference in the catalytic activity of 3 and 4 is most likely associated with a different mechanism for the generation of ●OH radicals. For complex 4 with electron-withdrawing CF3 substituents at the diimine ligand, an alternative mechanism, different from Fenton’s and involving a redox-active ligand, is assumed.
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Yambulatov DS, Nikolaevskii SA, Kiskin MA, Magdesieva TV, Levitskiy OA, Korchagin DV, Efimov NN, Vasil’ev PN, Goloveshkin AS, Sidorov AA, Eremenko IL. Complexes of Cobalt(II) Iodide with Pyridine and Redox Active 1,2-Bis(arylimino)acenaphthene: Synthesis, Structure, Electrochemical, and Single Ion Magnet Properties. Molecules 2020; 25:molecules25092054. [PMID: 32354044 PMCID: PMC7249109 DOI: 10.3390/molecules25092054] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/21/2020] [Accepted: 04/24/2020] [Indexed: 11/30/2022] Open
Abstract
Complexes [(dpp-BIAN)0CoIII2]·MeCN (I) and [(Py)2CoI2] (II) were synthesized by the reaction between cobalt(II) iodide and 1,2-bis(2,6-diisopropylphenylimino)acenaphthene (dpp-BIAN) or pyridine (Py), respectively. The molecular structures of the complexes were determined by X-ray diffraction. The Co(II) ions in both compounds are in a distorted tetrahedral environment (CoN2I2). The electrochemical behavior of complex I was studied by cyclic voltammetry. Magnetochemical measurements revealed that when an external magnetic field is applied, both compounds exhibit the properties of field-induced single ion magnets.
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Affiliation(s)
- Dmitriy S. Yambulatov
- N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky prosp., 119991 Moscow, Russian; (M.A.K.); (N.N.E.); (P.N.V.); (A.A.S.); (I.L.E.)
- Correspondence: (D.S.Y.); (S.A.N.); Tel.: +7-495-955-4817 (S.A.N.)
| | - Stanislav A. Nikolaevskii
- N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky prosp., 119991 Moscow, Russian; (M.A.K.); (N.N.E.); (P.N.V.); (A.A.S.); (I.L.E.)
- Correspondence: (D.S.Y.); (S.A.N.); Tel.: +7-495-955-4817 (S.A.N.)
| | - Mikhail A. Kiskin
- N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky prosp., 119991 Moscow, Russian; (M.A.K.); (N.N.E.); (P.N.V.); (A.A.S.); (I.L.E.)
| | - Tatiana V. Magdesieva
- Lomonosov Moscow State University, Deptartment of Chemistry, Leninskie Gory 1/3, 119991 Moscow, Russia; (T.V.M.); (O.A.L.)
| | - Oleg A. Levitskiy
- Lomonosov Moscow State University, Deptartment of Chemistry, Leninskie Gory 1/3, 119991 Moscow, Russia; (T.V.M.); (O.A.L.)
| | - Denis V. Korchagin
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, 142432 Moscow Region, Russia;
| | - Nikolay N. Efimov
- N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky prosp., 119991 Moscow, Russian; (M.A.K.); (N.N.E.); (P.N.V.); (A.A.S.); (I.L.E.)
| | - Pavel N. Vasil’ev
- N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky prosp., 119991 Moscow, Russian; (M.A.K.); (N.N.E.); (P.N.V.); (A.A.S.); (I.L.E.)
| | | | - Alexey A. Sidorov
- N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky prosp., 119991 Moscow, Russian; (M.A.K.); (N.N.E.); (P.N.V.); (A.A.S.); (I.L.E.)
| | - Igor L. Eremenko
- N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky prosp., 119991 Moscow, Russian; (M.A.K.); (N.N.E.); (P.N.V.); (A.A.S.); (I.L.E.)
- Nesmeyanov Institute of Organoelement Compounds, 119991 Moscow, Russia;
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Gushchin AL, Romashev NF, Shmakova AA, Abramov PA, Ryzhikov MR, Fomenko IS, Sokolov MN. Novel redox active rhodium(iii) complex with bis(arylimino)acenaphthene ligand: synthesis, structure and electrochemical studies. MENDELEEV COMMUNICATIONS 2020. [DOI: 10.1016/j.mencom.2020.01.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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