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Hamaoka H, Shiroma S, Aburaya K, Hasegawa M, Nishinaga T. Oxidation of a Dithieno[3,4-b:3',4'-d]thiophene Cyclic Dimer Containing a Planar Cyclooctatetraene Ring: Retention of High Antiaromaticity During Reactions. Chempluschem 2020; 84:704-711. [PMID: 31944031 DOI: 10.1002/cplu.201900064] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 03/15/2019] [Indexed: 11/08/2022]
Abstract
One-electron and peracid oxidations of dithieno[3,4-b : 3',4'-d]thiophene cyclic dimer, which contains an antiaromatic planar cyclooctatetraene (COT) core, were conducted. The reaction of the cyclic dimer with SbCl5 produced isolable radical cation salts. Density functional theory (DFT) calculations showed that the spin density of the radical cation resides not on the COT ring but on the peripheral sulfur and carbon atoms in the thiophene unit with retention of high antiaromaticity based on the nucleus-independent chemical shift (NICS). The peracid oxidation of the cyclic dimer was found to proceed not on the COT ring but on the bridging sulfur atom in the dithienothiophene moiety. The retention of the high antiaromaticity of the COT ring after the sulfoxide formation was experimentally confirmed based on the relative hardness, and also was theoretically supported by NICS calculations. Interestingly, the DFT calculations suggested that the high antiaromaticity does not enhance the reactivity towards the epoxidation on the COT ring.
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Affiliation(s)
- Hinako Hamaoka
- Department of Chemistry Graduate School of Science, Tokyo Metropolitan University Hachioji, Tokyo, 192-0397, Japan
| | - Shun Shiroma
- Department of Chemistry Graduate School of Science, Tokyo Metropolitan University Hachioji, Tokyo, 192-0397, Japan
| | - Kazuaki Aburaya
- Rigaku Corporation 3-9-12 Matsubara-cho, Akishima, Tokyo, 196-8666, Japan
| | - Masashi Hasegawa
- Department of Chemistry Graduate School of Science, Kitasato University 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa, 252-0373, Japan
| | - Tohru Nishinaga
- Department of Chemistry Graduate School of Science, Tokyo Metropolitan University Hachioji, Tokyo, 192-0397, Japan
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Nishinaga T, Shiroma S, Hasegawa M. Antiaromaticity of Planar Bisdehydro[12]- and Tetrakisdehydro[16]annulenes Fused with Dithieno[3,4-b:3′,4′-d]thiophenes. Org Lett 2018; 20:3426-3429. [DOI: 10.1021/acs.orglett.8b01405] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tohru Nishinaga
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
| | - Shun Shiroma
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
| | - Masashi Hasegawa
- Department of Chemistry, Graduate School of Science, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa 252-0373, Japan
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Aita K, Ohmae T, Takase M, Nomura K, Kimura H, Nishinaga T. Dithieno[3,4-b:3′,4′-d]thiophene-Annelated Antiaromatic Planar Cyclooctatetraene with Olefinic Protons. Org Lett 2013; 15:3522-5. [DOI: 10.1021/ol401125f] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Kazunari Aita
- Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan, and Bruker BioSpin K. K., Moriya, Kanagawa-ku, Yokohama 221-0022, Japan
| | - Takeshi Ohmae
- Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan, and Bruker BioSpin K. K., Moriya, Kanagawa-ku, Yokohama 221-0022, Japan
| | - Masayoshi Takase
- Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan, and Bruker BioSpin K. K., Moriya, Kanagawa-ku, Yokohama 221-0022, Japan
| | - Kotohiro Nomura
- Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan, and Bruker BioSpin K. K., Moriya, Kanagawa-ku, Yokohama 221-0022, Japan
| | - Hideaki Kimura
- Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan, and Bruker BioSpin K. K., Moriya, Kanagawa-ku, Yokohama 221-0022, Japan
| | - Tohru Nishinaga
- Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan, and Bruker BioSpin K. K., Moriya, Kanagawa-ku, Yokohama 221-0022, Japan
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Toma Y, Kuribara T, Iizuka T, Nagashima H, Kyushin S. Synthesis, Structure, and Electronic Properties of Benzohexasilabicyclo[2.2.2]octene. CHEM LETT 2013. [DOI: 10.1246/cl.2013.250] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Yuki Toma
- Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University
| | - Takayoshi Kuribara
- Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University
| | - Takuya Iizuka
- Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University
| | - Hideo Nagashima
- Institute for Materials Chemistry and Engineering, Kyushu University
| | - Soichiro Kyushin
- Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University
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Nishinaga T, Ohmae T, Aita K, Takase M, Iyoda M, Arai T, Kunugi Y. Antiaromatic planar cyclooctatetraene: a strategy for developing ambipolar semiconductors for field effect transistors. Chem Commun (Camb) 2013; 49:5354-6. [DOI: 10.1039/c3cc41764f] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Recent Studies on the Aromaticity and Antiaromaticity of Planar Cyclooctatetraene. Symmetry (Basel) 2010. [DOI: 10.3390/sym2010076] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Ohmae T, Nishinaga T, Wu M, Iyoda M. Cyclic Tetrathiophenes Planarized by Silicon and Sulfur Bridges Bearing Antiaromatic Cyclooctatetraene Core: Syntheses, Structures, and Properties. J Am Chem Soc 2009; 132:1066-74. [DOI: 10.1021/ja908161r] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Takeshi Ohmae
- Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
| | - Tohru Nishinaga
- Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
| | - Mo Wu
- Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
| | - Masahiko Iyoda
- Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
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Nishinaga T, Uto T, Inoue R, Matsuura A, Treitel N, Rabinovitz M, Komatsu K. Antiaromaticity and Reactivity of a Planar Cyclooctatetraene Fully Annelated with Bicyclo[2.1.1]hexane Units. Chemistry 2008; 14:2067-74. [DOI: 10.1002/chem.200701405] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Komatsu K. Studies on Two- and Three-Dimensional π-Conjugated Systems with Unique Structures and Properties. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2007. [DOI: 10.1246/bcsj.80.2285] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Nelsen SF, Weaver MN, Yamazaki D, Komatsu K, Rathore R, Bally T. Calculations of the Optical Spectra of Hydrocarbon Radical Cations Based on Koopmans' Theorem. J Phys Chem A 2007; 111:1667-76. [PMID: 17288409 DOI: 10.1021/jp066384i] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The first few bands in the optical spectra of radical cations can often be interpreted in terms of A-type transitions that involve electron promotions from doubly occupied to the singly occupied molecular orbital (SOMO) and/or B-type transition which involve electron promotion from the SOMO to virtual molecular orbitals. We had previously demonstrated that, by making use of Koopmans' theorem, the energies of A-type transitions can be related to orbital energy differences between lower occupied MOs and the highest occupied MO (HOMO) in the neutral molecule, calculated at the geometry of the radical cation. We now propose that the energies of B-type transitions can be related similarly to energy differences between the lowest unoccupied MO (LUMO) and higher virtual MOs in the dication, also calculated at the geometry of the radical cation, by way of an extension of Koopmans' theorem to virtual MOs similar to that used sometimes to model resonances in electron scattering experiments. The optical spectra of the radical cations of several polyenes and aromatic compounds, the matrix spectra of which are known (or presented here for the first time), and for which CASSCF/CASPT2 calculations are available, are discussed in terms of these Koopmans-based models. Then the spectra of five poly(bicycloalkyl)-protected systems and that of hexabenzocoronene, compounds not amenable to higher level calculations, are examined and it is found that the Koopmans-type calculations allow a satisfactory interpretation of most of the features in these spectra. These simple calculations therefore provide a computationally inexpensive yet effective way to assign optical transitions in radical ions. Limitations of the model are discussed.
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Affiliation(s)
- Stephen F Nelsen
- Department of Chemistry, University of Wisconsin, 1101 University Avenue, Madison, WI 53706-1396, USA.
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Affiliation(s)
- Eric L Spitler
- Department of Chemistry and Materials Science Institute, University of Oregon, Eugene, Oregon 97403-1253, USA
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McKay SE, Lashlee RW, Holthouse BA, Kiprof P. A computational study of sulfur bridged cyclooctatetraenophanes. J Mol Graph Model 2006; 25:543-8. [PMID: 16750643 DOI: 10.1016/j.jmgm.2006.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2006] [Revised: 04/20/2006] [Accepted: 04/23/2006] [Indexed: 11/20/2022]
Abstract
Calculations of several thiacyclooctatetraenophanes predicted, as part of their overall geometry, substantial flattening of the cyclooctatetraene (COT) structures relative to the tub conformation generally associated with the COT molecule. The COT structures were approximately parallel to each other and the interplanar distances were predicted to be within 2.787-2.803 angstrom at the DFT/UB3YLP level of calculation. DFT/UB3LYP optimized geometries afforded significant delocalization of the COT structures in each of the thiacyclooctatetraenophanes. Hartree-Fock (HF) methods and the semi-empirical Austin Model 1 (AM1) method deviated significantly from the DFT/UB3LYP optimized geometries. Cyclooctatetraenes can undergo reversible sizing by oxidation and reduction reactions to form the aromatic dication and aromatic dianion, respectively, which could then be used to prepare molecular backbones for polymeric organometallic molecular wires. The number of bridges and the introduction of the sulfur atom have been investigated to provide disparate synthetic routes.
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Affiliation(s)
- Scott E McKay
- Department of Chemistry and Physics, Central Missouri State University, Warrensburg, MO, USA.
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Kimura T, Suzuki T, Takaguchi Y, Yomogita A, Wakahara T, Akasaka T. Preparation and Electrochemical Properties of 1,4,8,11,15,18,22,25-Octalkylphthalocyanines Containing Four Trithiole Rings. European J Org Chem 2006. [DOI: 10.1002/ejoc.200500654] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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