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Gracheva SV, Yankova TS, Kosaya MP, Brotsman VA, Ioffe IN, Lukonina NS, Goryunkov AA. Reversibly switchable methanofullerene by photoexcitation and reduction. Phys Chem Chem Phys 2022; 24:26998-27003. [DOI: 10.1039/d2cp03945a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
A cyclopropanated derivative of the trifluoromethylated fullerene Cs-C70(CF3)8 demonstrates reversible switching behavior triggered by excited state electron transfer or by negative charging.
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Affiliation(s)
- Sofia V. Gracheva
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1–3, Moscow 119991, Russia
| | - Tatiana S. Yankova
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1–3, Moscow 119991, Russia
| | - Maria P. Kosaya
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1–3, Moscow 119991, Russia
| | - Victor A. Brotsman
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1–3, Moscow 119991, Russia
| | - Ilya N. Ioffe
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1–3, Moscow 119991, Russia
| | - Natalia S. Lukonina
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1–3, Moscow 119991, Russia
| | - Alexey A. Goryunkov
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1–3, Moscow 119991, Russia
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Kosaya MP, Yankova TS, Rybalchenko AV, Tamm NB, Ioffe IN, Lukonina NS, Belov NM, Goryunkov AA. Electrochemically Induced Dimerization of p9mp-C 70(CF 3) 12 Trifluoromethylated Fullerene. J Phys Chem A 2021; 125:7876-7883. [PMID: 34491755 DOI: 10.1021/acs.jpca.1c05656] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report a comprehensive study of a novel isomer of C70(CF3)12, p9mp-C70(CF3)12, whose electrochemical behavior differs from most of the other trifluoromethylated fullerenes. The addition pattern of p9mp-C70(CF3)12 is established by means of 19F-19F COSY NMR spectroscopy and DFT calculations. Like p7mp-C70(CF3)10, the new isomer p9mp-C70(CF3)12 undergoes dimerization to the [C70(CF3)12]22- upon single-electron reduction. The electrochemical observations are supported by the DFT calculations of dimerization energy and the temperature dependence of the CW X-band EPR spectroscopy data. Experimentally determined dimerization energies of p9mp-C70(CF3)12-• and p7mp-C70(CF3)10-• in solution are ca -8 and -26 kJ mol-1, respectively, in good correspondence with DFT data.
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Affiliation(s)
- Maria P Kosaya
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory, 1-3, 119991 Moscow, Russia
| | - Tatiana S Yankova
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory, 1-3, 119991 Moscow, Russia
| | - Alexey V Rybalchenko
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory, 1-3, 119991 Moscow, Russia
| | - Nadezhda B Tamm
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory, 1-3, 119991 Moscow, Russia
| | - Ilya N Ioffe
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory, 1-3, 119991 Moscow, Russia
| | - Natalia S Lukonina
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory, 1-3, 119991 Moscow, Russia
| | - Nikita M Belov
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory, 1-3, 119991 Moscow, Russia
| | - Alexey A Goryunkov
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory, 1-3, 119991 Moscow, Russia
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Druzhinina AI, Tiflova LA, Monayenkova AS, Goryunkov AA. History of the V.F. Luginin Thermal Laboratory. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2019. [DOI: 10.1134/s0036024419110098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Tamm NB, Guan R, Yang S, Kemnitz E, Troyanov SI. Chlorination-Promoted Cage Transformation of IPR C 92 Discovered via Trifluoromethylation under Formation of Non-classical C 92 (NC)(CF 3 ) 22. Chem Asian J 2019; 14:2108-2111. [PMID: 31091007 DOI: 10.1002/asia.201900469] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 04/23/2019] [Indexed: 11/12/2022]
Abstract
High-temperature trifluoromethylation of isolated-pentagon-rule (IPR) fullerene C92 chlorination products followed by HPLC separation of C92 (CF3 )n derivatives resulted in the isolation and X-ray structural characterization of IPR C92 (38)(CF3 )18 and non-classical C92 (NC)(CF3 )22 . The formation of C92 (38)(CF3 )18 as the highest CF3 derivative of the known isomer C92 (38) can be expected. The formation of C92 (NC)(CF3 )22 was interpreted as chlorination-promoted cage transformation of C92 (38) followed by trifluoromethylation of non-classical C92 (NC) chloride. Noticeably, C92 (NC)(CF3 )22 shows the highest degree of trifluoromethylation among all known CF3 derivatives of fullerenes. The addition patterns of C92 (38)(CF3 )18 and C92 (NC)(CF3 )22 are discussed and compared to the chlorination patterns of C92 (38)Cln compounds.
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Affiliation(s)
- Nadezhda B Tamm
- Chemistry Department, Moscow State University, Leninskie Gory, 119991, Moscow, Russia
| | - Runnan Guan
- Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China (USTC), 230026, Hefei, China
| | - Shangfeng Yang
- Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China (USTC), 230026, Hefei, China
| | - Erhard Kemnitz
- Institute of Chemistry, Humboldt University Berlin, Brook-Taylor.-Str. 2, 12489, Berlin, Germany
| | - Sergey I Troyanov
- Chemistry Department, Moscow State University, Leninskie Gory, 119991, Moscow, Russia
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