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Murata T, Yoshida K, Suzuki S, Ueda A, Nishida S, Kawai J, Fukui K, Sato K, Takui T, Nakasuji K, Morita Y. Double‐σ‐Bonded Close‐Shell Dimers and Peroxy‐Linked Open‐Shell Dimer Derived from a
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Symmetric Trioxophenalenyl Neutral Diradical. Chemistry 2022; 28:e202201426. [DOI: 10.1002/chem.202201426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Indexed: 11/10/2022]
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Murata T, Yoshida K, Suzuki S, Ueda A, Nishida S, Kawai J, Fukui K, Nakasuji K, Morita Y. Design and Synthesis of a C3 Symmetrical Phenalenyl Derivative with Three Oxo Groups by Regioselective Deoxygenation/Oxygenation. Org Lett 2022; 24:1033-1037. [PMID: 35050630 DOI: 10.1021/acs.orglett.1c04227] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Tri-tert-butylated 4,7-dihydroxyphenalenone was designed and synthesized from a corresponding 4,9-dimethoxyphenalenone derivative by regioselective deoxygenation/oxygenation. The 4,7-dihydroxyphenalenone derivative showed a chromic behavior accompanied by protonation and deprotonation, giving monocation and dianion species, respectively, and their C3 symmetric electronic structures were elucidated by experimental and theoretical methods.
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Murata T, Nakasuji K, Morita Y. Development of Conducting Charge-Transfer Complexes Based on Cooperation of Hydrogen-Bond and Charge-Transfer Interactions. J SYN ORG CHEM JPN 2019. [DOI: 10.5059/yukigoseikyokaishi.77.318] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Mitsumi M, Ezaki K, Komatsu Y, Toriumi K, Miyatou T, Mizuno M, Azuma N, Miyazaki Y, Nakano M, Kitagawa Y, Hanashima T, Kiyanagi R, Ohhara T, Nakasuji K. Frontispiece: Proton Order-Disorder Phenomena in a Hydrogen-Bonded Rhodium-η 5-Semiquinone Complex: A Possible Dielectric Response Mechanism. Chemistry 2015. [DOI: 10.1002/chem.201582762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Mitsumi M, Ezaki K, Komatsu Y, Toriumi K, Miyatou T, Mizuno M, Azuma N, Miyazaki Y, Nakano M, Kitagawa Y, Hanashima T, Kiyanagi R, Ohhara T, Nakasuji K. Proton Order-Disorder Phenomena in a Hydrogen-Bonded Rhodium-η(5)-Semiquinone Complex: A Possible Dielectric Response Mechanism. Chemistry 2015; 21:9682-96. [PMID: 26032896 DOI: 10.1002/chem.201500796] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Indexed: 11/06/2022]
Abstract
A newly synthesized one-dimensional (1D) hydrogen-bonded (H-bonded) rhodium(II)-η(5)-semiquinone complex, [Cp*Rh(η(5)-p-HSQ-Me4)]PF6 ([1]PF6; Cp* = 1,2,3,4,5-pentamethylcyclopentadienyl; HSQ = semiquinone) exhibits a paraelectric-antiferroelectric second-order phase transition at 237.1 K. Neutron and X-ray crystal structure analyses reveal that the H-bonded proton is disordered over two sites in the room-temperature (RT) phase. The phase transition would arise from this proton disorder together with rotation or libration of the Cp* ring and PF6(-) ion. The relative permittivity εb' along the H-bonded chains reaches relatively high values (ca., 130) in the RT phase. The temperature dependence of (13)C CP/MAS NMR spectra demonstrates that the proton is dynamically disordered in the RT phase and that the proton exchange has already occurred in the low-temperature (LT) phase. Rate constants for the proton exchange are estimated to be 10(-4)-10(-6) s in the temperature range of 240-270 K. DFT calculations predict that the protonation/deprotonation of [1](+) leads to interesting hapticity changes of the semiquinone ligand accompanied by reduction/oxidation by the π-bonded rhodium fragment, producing the stable η(6)-hydroquinone complex, [Cp*Rh(3+)(η(6)-p-H2Q-Me4)](2+) ([2](2+)), and η(4)-benzoquinone complex, [Cp*Rh(+)(η(4)-p-BQ-Me4)] ([3]), respectively. Possible mechanisms leading to the dielectric response are discussed on the basis of the migration of the protonic solitons comprising of [2](2+) and [3], which would be generated in the H-bonded chain.
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Murata T, Yamamoto Y, Yakiyama Y, Nakasuji K, Morita Y. Syntheses, Redox Properties, Self-Assembled Structures, and Charge-Transfer Complexes of Imidazole- and Benzimidazole-Annelated Tetrathiafulvalene Derivatives. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2013. [DOI: 10.1246/bcsj.20130043] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Nishida S, Kawai J, Moriguchi M, Ohba T, Haneda N, Fukui K, Fuyuhiro A, Shiomi D, Sato K, Takui T, Nakasuji K, Morita Y. Control of Exchange Interactions in π Dimers of 6-Oxophenalenoxyl Neutral π Radicals: Spin-Density Distributions and Multicentered-Two-Electron Bonding Governed by Topological Symmetry and Substitution at the 8-Position. Chemistry 2013; 19:11904-15. [PMID: 23922181 DOI: 10.1002/chem.201301783] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2013] [Indexed: 12/14/2022]
Abstract
The tri-tert-butylphenalenyl (TBPLY) radical exists as a π dimer in the crystal form with perfect overlapping of the singly occupied molecular orbitals (SOMOs) causing strong antiferromagnetic exchange interactions. 2,5-Di-tert-butyl-6-oxophenalenoxyl (6OPO) is a phenalenyl-based air-stable neutral π radical with extensive spin delocalization and is a counter analogue of phenalenyl in terms of the topological symmetry of the spin density distribution. X-ray crystal structure analyses showed that 8-tert-butyl- and 8-(p-XC6H4)-6OPOs (X=I, Br) also form π dimers in the crystalline state. The π-dimeric structure of 8-tert-butyl-6OPO is seemingly similar to that of TBPLY even though its SOMO-SOMO overlap is small compared with that of TBPLY. The 8-(p-XC6H4) derivatives form slipped stacking π dimers in which the SOMO-SOMO overlaps are greater than in 8-tert-butyl-6OPO, but still smaller than in TBPLY. The solid-state electronic spectra of the 6OPO derivatives show much weaker intradimer charge-transfer bands, and SQUID measurements for 8-(p-BrC6H4)-6OPO show a weak antiferromagnetic exchange interaction in the π dimer. These results demonstrate that the control of the spin distribution patterns of the phenalenyl skeleton switches the mode of exchange interaction within the phenalenyl-based π dimer. The formation of the relevant multicenter-two-electron bonds is discussed.
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Ueda A, Suzuki S, Yoshida K, Fukui K, Sato K, Takui T, Nakasuji K, Morita Y. Hexamethoxyphenalenyl as a Possible Quantum Spin Simulator: An Electronically Stabilized Neutral π Radical with Novel Quantum Coherence Owing to Extremely High Nuclear Spin Degeneracy. Angew Chem Int Ed Engl 2013; 52:4795-9. [DOI: 10.1002/anie.201301435] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Indexed: 12/14/2022]
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Morita Y, Murata T, Nakasuji K. Cooperation of Hydrogen-Bond and Charge-Transfer Interactions in Molecular Complexes in the Solid State. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2013. [DOI: 10.1246/bcsj.20120241] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Murata T, Miyazaki E, Maki S, Umemoto Y, Ohmoto M, Nakasuji K, Morita Y. Development of Organic Conductors with Self-Assembled Architectures of Biomolecules: Synthesis and Crystal Structures of Nucleobase-Functionalized Tetrathiafulvalene Derivatives. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2012. [DOI: 10.1246/bcsj.20120102] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Murata T, Nakasuji K, Morita Y. Tetrathiafulvalene-Type Electron Donors Bearing Biimidazole Moieties: Multifunctional Units with Hydrogen Bonding Abilities. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200426] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Morita Y, Nishida S, Takui T, Nakasuji K. Air-Stable Open-shell Organic Molecules: Syntheses of Electronic-Spin Delocalized Neutral Radicals and Dynamic Electronic-Spin Physical Properties. J SYN ORG CHEM JPN 2012. [DOI: 10.5059/yukigoseikyokaishi.70.50] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Murata T, Umemoto Y, Miyazaki E, Nakasuji K, Morita Y. Modulation of charge-transfer complexes assisted by complementary hydrogen bonds of nucleobases: TCNQ complexes of a uracil-substituted EDO-TTF. CrystEngComm 2012. [DOI: 10.1039/c2ce25889g] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Ueda A, Yoshida K, Suzuki S, Fukui K, Nakasuji K, Morita Y. Heteroatom functionalization of phenalenyl: synthesis, structures, and properties of hexa-substituted phenalenyliums. J PHYS ORG CHEM 2011. [DOI: 10.1002/poc.1916] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Yakiyama Y, Murata T, Ise T, Shiomi D, Sato K, Takui T, Nakasuji K, Morita Y. Solution-Stable Triple Helicates of Quaterimidazole: Three-Dimensional Crystal Structures and Optical Resolution by Chiral-Column HPLC. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201100488] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Nishida S, Kariyazono K, Yamanaka A, Fukui K, Sato K, Takui T, Nakasuji K, Morita Y. Electronic Stabilization Effect of a Spin‐Delocalized Neutral Radical: Synthesis of an 8‐Cyano‐6‐oxophenalenoxyl Derivative and Quantitative Evaluation of the Electronic Spin Structure in terms of Resonance Structures. Chem Asian J 2011; 6:1188-96. [DOI: 10.1002/asia.201000793] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2010] [Indexed: 11/07/2022]
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Murata T, Maki S, Ohmoto M, Miyazaki E, Umemoto Y, Nakasuji K, Morita Y. Redox-active tubular frameworks with TTF: self-assemblies by complementary hydrogen-bonds and π-stacks of TTF-phenyluracil. CrystEngComm 2011. [DOI: 10.1039/c1ce05794d] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Murata T, Yakiyama Y, Nakasuji K, Morita Y. Proton-transfer salts between an EDT-TTF derivative having imidazole-ring and anilic acids: multi-dimensional networks by acid–base hydrogen-bonds, π-stacks and chalcogen atom interactions. CrystEngComm 2011. [DOI: 10.1039/c1ce05326d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Suzuki S, Fukui K, Fuyuhiro A, Sato K, Takui T, Nakasuji K, Morita Y. Hexaazaphenalene Derivatives: One-Pot Synthesis, Hydrogen-Bonded Chiral Helix, and Fluorescence Properties. Org Lett 2010; 12:5036-9. [DOI: 10.1021/ol102200v] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Shimizu A, Kubo T, Uruichi M, Yakushi K, Nakano M, Shiomi D, Sato K, Takui T, Hirao Y, Matsumoto K, Kurata H, Morita Y, Nakasuji K. Alternating Covalent Bonding Interactions in a One-Dimensional Chain of a Phenalenyl-Based Singlet Biradical Molecule Having Kekulé Structures. J Am Chem Soc 2010; 132:14421-8. [DOI: 10.1021/ja1037287] [Citation(s) in RCA: 147] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Ueda A, Ogasawara K, Nishida S, Ise T, Yoshino T, Nakazawa S, Sato K, Takui T, Nakasuji K, Morita Y. A Bowl-Shaped ortho-Semiquinone Radical Anion: Quantitative Evaluation of the Dynamic Behavior of Structural and Electronic Features. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201002626] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Tajiri A, Hatano M, Nakazawa T, Nakasuji K, Murata I. Magnetic Circular Dichroism and Molecular Orbital Studies on the Intramolecular Charge-Transfer Transitions in the Bridged Tropylium Cations. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19820860311] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Morita Y, Yakiyama Y, Nakazawa S, Murata T, Ise T, Hashizume D, Shiomi D, Sato K, Kitagawa M, Nakasuji K, Takui T. Triple-Stranded Metallo-Helicates Addressable as Lloyd’s Electron Spin Qubits. J Am Chem Soc 2010; 132:6944-6. [DOI: 10.1021/ja102030w] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ueda A, Nishida S, Fukui K, Ise T, Shiomi D, Sato K, Takui T, Nakasuji K, Morita Y. Three-Dimensional Intramolecular Exchange Interaction in a Curved and Nonalternant π-Conjugated System: Corannulene with Two Phenoxyl Radicals. Angew Chem Int Ed Engl 2010; 49:1678-82. [DOI: 10.1002/anie.200906666] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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