1
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Wang K, Liu P, Zhang F, Xu L, Zhou M, Nakai A, Kato K, Furukawa K, Tanaka T, Osuka A, Song J. A Robust Porphyrin-Stabilized Triplet Carbon Diradical. Angew Chem Int Ed Engl 2021; 60:7002-7006. [PMID: 33393192 DOI: 10.1002/anie.202015356] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 12/25/2020] [Indexed: 11/06/2022]
Abstract
The synthesis of robust high-spin carbon radicals is an important topic in organic chemistry. Toward this end, several porphyrin-stabilized radicals have been systematically explored. A singly naphthalene-fused porphyrin radical was synthesized by a reaction sequence consisting of a Suzuki-Miyaura coupling of β-borylated porphyrin with 2-bromobenzaldehyde, addition of mesityl Grignard reagent, intramolecular Friedel-Crafts alkylation, and final oxidation with DDQ or tBuOK/O2 . This strategy was also used to synthesize doubly naphthalene-fused porphyrins and syn- and anti-fused-anthracene-bridged porphyrin dimers. While singly naphthalene-fused porphyrin radical has been shown to be a stable monoradical, doubly naphthalene-fused porphyrins and anti-fused-anthracene-bridged porphyrin dimers have been shown to be closed-shell molecules. Finally, the syn-dimer was characterized as a surprisingly stable radical (t1/2 =28 days under ambient air and at 80 °C) that is storable for more than several months, despite its high-spin triplet ground-state carbon diradical.
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Affiliation(s)
- Kaisheng Wang
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Key Laboratory of the Assembly and Application of Organic Functional molecules of Hunan Province, Hunan Normal University, Changsha, 410081, China
| | - Pingting Liu
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Key Laboratory of the Assembly and Application of Organic Functional molecules of Hunan Province, Hunan Normal University, Changsha, 410081, China
| | - Fenni Zhang
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Key Laboratory of the Assembly and Application of Organic Functional molecules of Hunan Province, Hunan Normal University, Changsha, 410081, China
| | - Ling Xu
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Key Laboratory of the Assembly and Application of Organic Functional molecules of Hunan Province, Hunan Normal University, Changsha, 410081, China
| | - Mingbo Zhou
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Key Laboratory of the Assembly and Application of Organic Functional molecules of Hunan Province, Hunan Normal University, Changsha, 410081, China
| | - Akito Nakai
- Department of Chemistry, Graduate School of Science Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Kenichi Kato
- Department of Chemistry, Graduate School of Science Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Ko Furukawa
- Center for Instrumental Analysis, Niigata University, Nishi-ku, Niigata, 950-2181, Japan
| | - Takayuki Tanaka
- Department of Chemistry, Graduate School of Science Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Atsuhiro Osuka
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Key Laboratory of the Assembly and Application of Organic Functional molecules of Hunan Province, Hunan Normal University, Changsha, 410081, China
| | - Jianxin Song
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Key Laboratory of the Assembly and Application of Organic Functional molecules of Hunan Province, Hunan Normal University, Changsha, 410081, China
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2
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Wang K, Liu P, Zhang F, Xu L, Zhou M, Nakai A, Kato K, Furukawa K, Tanaka T, Osuka A, Song J. A Robust Porphyrin‐Stabilized Triplet Carbon Diradical. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202015356] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Kaisheng Wang
- College of Chemistry and Chemical Engineering Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China) Key Laboratory of the Assembly and Application of Organic Functional molecules of Hunan Province Hunan Normal University Changsha 410081 China
| | - Pingting Liu
- College of Chemistry and Chemical Engineering Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China) Key Laboratory of the Assembly and Application of Organic Functional molecules of Hunan Province Hunan Normal University Changsha 410081 China
| | - Fenni Zhang
- College of Chemistry and Chemical Engineering Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China) Key Laboratory of the Assembly and Application of Organic Functional molecules of Hunan Province Hunan Normal University Changsha 410081 China
| | - Ling Xu
- College of Chemistry and Chemical Engineering Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China) Key Laboratory of the Assembly and Application of Organic Functional molecules of Hunan Province Hunan Normal University Changsha 410081 China
| | - Mingbo Zhou
- College of Chemistry and Chemical Engineering Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China) Key Laboratory of the Assembly and Application of Organic Functional molecules of Hunan Province Hunan Normal University Changsha 410081 China
| | - Akito Nakai
- Department of Chemistry Graduate School of Science Kyoto University Sakyo-ku Kyoto 606-8502 Japan
| | - Kenichi Kato
- Department of Chemistry Graduate School of Science Kyoto University Sakyo-ku Kyoto 606-8502 Japan
| | - Ko Furukawa
- Center for Instrumental Analysis Niigata University Nishi-ku Niigata 950-2181 Japan
| | - Takayuki Tanaka
- Department of Chemistry Graduate School of Science Kyoto University Sakyo-ku Kyoto 606-8502 Japan
| | - Atsuhiro Osuka
- College of Chemistry and Chemical Engineering Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China) Key Laboratory of the Assembly and Application of Organic Functional molecules of Hunan Province Hunan Normal University Changsha 410081 China
| | - Jianxin Song
- College of Chemistry and Chemical Engineering Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China) Key Laboratory of the Assembly and Application of Organic Functional molecules of Hunan Province Hunan Normal University Changsha 410081 China
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3
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Sample HC, Senge MO. Nucleophilic Aromatic Substitution (S NAr) and Related Reactions of Porphyrinoids: Mechanistic and Regiochemical Aspects. European J Org Chem 2021; 2021:7-42. [PMID: 33519299 PMCID: PMC7821298 DOI: 10.1002/ejoc.202001183] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Indexed: 12/29/2022]
Abstract
The nucleophilic substitution of aromatic moieties (SNAr) has been known for over 150 years and found wide use for the functionalization of (hetero)aromatic systems. Currently, several "types" of SNAr reactions have been established and notably the area of porphyrinoid macrocycles has seen many uses thereof. Herein, we detail the SNAr reactions of seven types of porphyrinoids with differing number and type of pyrrole units: subporphyrins, norcorroles, corroles, porphyrins, azuliporphyrins, N-confused porphyrins, and phthalocyanines. For each we analyze the substitution dependent upon: a) the type of nucleophile and b) the site of substitution (α, β, or meso). Along with this we evaluate this route as a synthetic strategy for the generation of unsymmetrical porphyrinoids. Distinct trends can be identified for each type of porphyrinoid discussed, regardless of nucleophile. The use of nucleophilic substitution on porphyrinoids is found to often be a cost-effective procedure with the ability to yield complex substituent patterns, which can be conducted in non-anhydrous solvents with easily accessible simple porphyrinoids.
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Affiliation(s)
- Harry C. Sample
- School of ChemistryTrinity Biomedical Sciences InstituteThe University of Dublin152‐160 Pearse StreetDublin 2Ireland
| | - Mathias O. Senge
- Institute for Advanced Study (TUM‐IAS)Technical University of MunichLichtenbergstrasse 2a85748GarchingGermany
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4
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Kato K, Osuka A. Propeller-Shaped Semi-fused Porphyrin Trimers: Molecular-Symmetry-Dependent Chiroptical Response. Chemistry 2020; 26:10217-10221. [PMID: 32459376 DOI: 10.1002/chem.202002157] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 05/26/2020] [Indexed: 11/09/2022]
Abstract
Triple helicene-like semi-fused trimeric NiII porphyrins were constructed by alkyne trimerization of an ethynyl-substituted porphyrin and subsequent three-fold Grignard addition to the formyl groups and acid-catalyzed intramolecular cyclization. The presence of stereogenic sp3 carbons in the central bridge leads to small inter-porphyrin conjugative interactions as was revealed by electrochemical and optical properties. Two diastereomers with stable chiral conformations were optically resolved, and the separated enantiomers displayed considerably intense circular dichroism. Importantly, the chiroptical response of C3 -symmetric helical isomer (|Δϵ|=830 m-1 cm-1 ) is 1.8 times amplified from that of C1 -symmetric one (|Δϵ|=470 m-1 cm-1 ). The observed amplification has been interpreted in terms of different spatial arrangements of the three porphyrins.
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Affiliation(s)
- Kenichi Kato
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku Kyoto, 606-8502, Japan
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku Kyoto, 606-8502, Japan
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5
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Yamamoto T, Kato K, Shimizu D, Tanaka T, Osuka A. Phenylene-bridged Porphyrin meso-Oxy Radical Dimers. Chem Asian J 2019; 14:4031-4034. [PMID: 31419053 DOI: 10.1002/asia.201901033] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Indexed: 02/05/2023]
Abstract
Stable meta- and para-phenylene bridged porphyrin meso-oxy radical dimers and their NiII and ZnII complexes were synthesized. All the dimers exhibited optical and electrochemical properties similar to the corresponding porphyrin meso-oxy radical monomers, indicating small electronic interaction between the two spins. Intramolecular spin-spin interaction through the π-spacer was determined to be J/kB =-15.9 K for m-phenylene bridged ZnII porphyrin dimer. The observed weak antiferromagnetic interaction has been attributed to less effective conjugation between the porphyrin radical and linking π-spacer due to large dihedral angle. In the case of ZnII complexes, both para- and meta-phenylene bridged dimers formed 1D-chain in solutions and in the solid states through Zn-O coordination.
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Affiliation(s)
- Takayuki Yamamoto
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Kenichi Kato
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Daiki Shimizu
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Takayuki Tanaka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
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6
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Kato K, Osuka A. meta
‐ and
para
‐Phenylenediamine‐Fused Porphyrin Dimers: Synthesis and Magnetic Interactions of Their Dication Diradicals. Angew Chem Int Ed Engl 2019; 58:8546-8550. [DOI: 10.1002/anie.201901939] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 04/07/2019] [Indexed: 12/26/2022]
Affiliation(s)
- Kenichi Kato
- Department of ChemistryGraduate School of ScienceKyoto University Sakyo-ku Kyoto 606-8502 Japan
| | - Atsuhiro Osuka
- Department of ChemistryGraduate School of ScienceKyoto University Sakyo-ku Kyoto 606-8502 Japan
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7
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Kato K, Osuka A. meta
‐ and
para
‐Phenylenediamine‐Fused Porphyrin Dimers: Synthesis and Magnetic Interactions of Their Dication Diradicals. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201901939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Kenichi Kato
- Department of ChemistryGraduate School of ScienceKyoto University Sakyo-ku Kyoto 606-8502 Japan
| | - Atsuhiro Osuka
- Department of ChemistryGraduate School of ScienceKyoto University Sakyo-ku Kyoto 606-8502 Japan
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8
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Affiliation(s)
- Kenichi Kato
- Department of ChemistryGraduate School of ScienceKyoto University Oiwake-cho, Kitashirakawa, Sakyo-ku Kyoto 606-8502 Japan
| | - Atsuhiro Osuka
- Department of ChemistryGraduate School of ScienceKyoto University Oiwake-cho, Kitashirakawa, Sakyo-ku Kyoto 606-8502 Japan
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9
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Kato K, Osuka A. Platforms for Stable Carbon‐Centered Radicals. Angew Chem Int Ed Engl 2019; 58:8978-8986. [DOI: 10.1002/anie.201900307] [Citation(s) in RCA: 84] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Indexed: 11/12/2022]
Affiliation(s)
- Kenichi Kato
- Department of ChemistryGraduate School of ScienceKyoto University Oiwake-cho, Kitashirakawa, Sakyo-ku Kyoto 606-8502 Japan
| | - Atsuhiro Osuka
- Department of ChemistryGraduate School of ScienceKyoto University Oiwake-cho, Kitashirakawa, Sakyo-ku Kyoto 606-8502 Japan
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10
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Shimizu D, Ide Y, Ikeue T, Osuka A. Coordination‐Induced Spin‐State Switching of an Aminyl‐Radical‐Bridged Nickel(II) Porphyrin Dimer between Doublet and Sextet States. Angew Chem Int Ed Engl 2019; 58:5023-5027. [PMID: 30761702 DOI: 10.1002/anie.201900792] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Indexed: 12/18/2022]
Affiliation(s)
- Daiki Shimizu
- Department of ChemistryGraduate School of ScienceKyoto University, Sakyo-ku Kyoto 606-8502 Japan
| | - Yuki Ide
- Interdisciplinary Graduate School of Science and EngineeringShimane University, Nishikawatsu-Cho Matsue 690-8504 Japan
| | - Takahisa Ikeue
- Interdisciplinary Graduate School of Science and EngineeringShimane University, Nishikawatsu-Cho Matsue 690-8504 Japan
| | - Atsuhiro Osuka
- Department of ChemistryGraduate School of ScienceKyoto University, Sakyo-ku Kyoto 606-8502 Japan
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11
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Shimizu D, Ide Y, Ikeue T, Osuka A. Coordination‐Induced Spin‐State Switching of an Aminyl‐Radical‐Bridged Nickel(II) Porphyrin Dimer between Doublet and Sextet States. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201900792] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Daiki Shimizu
- Department of ChemistryGraduate School of ScienceKyoto University, Sakyo-ku Kyoto 606-8502 Japan
| | - Yuki Ide
- Interdisciplinary Graduate School of Science and EngineeringShimane University, Nishikawatsu-Cho Matsue 690-8504 Japan
| | - Takahisa Ikeue
- Interdisciplinary Graduate School of Science and EngineeringShimane University, Nishikawatsu-Cho Matsue 690-8504 Japan
| | - Atsuhiro Osuka
- Department of ChemistryGraduate School of ScienceKyoto University, Sakyo-ku Kyoto 606-8502 Japan
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12
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Adinarayana B, Shimizu D, Osuka A. Stable (BIII
-Subporphyrin-5-yl)dicyanomethyl Radicals. Chemistry 2019; 25:1706-1710. [DOI: 10.1002/chem.201805601] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Indexed: 11/12/2022]
Affiliation(s)
- Bellamkonda Adinarayana
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo-ku Kyoto 606-8502 Japan
| | - Daiki Shimizu
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo-ku Kyoto 606-8502 Japan
| | - Atsuhiro Osuka
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo-ku Kyoto 606-8502 Japan
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13
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Fujimoto K, Shimizu D, Osuka A. Porphyrin‐Stabilized Nitrenium Dication. Chemistry 2018; 25:521-525. [DOI: 10.1002/chem.201805491] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Keisuke Fujimoto
- Department of ChemistryGraduate School of ScienceKyoto University Sakyo-ku Kyoto 606-8502 Japan
| | - Daiki Shimizu
- Department of ChemistryGraduate School of ScienceKyoto University Sakyo-ku Kyoto 606-8502 Japan
| | - Atsuhiro Osuka
- Department of ChemistryGraduate School of ScienceKyoto University Sakyo-ku Kyoto 606-8502 Japan
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14
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Shimizu D, Fujimoto K, Osuka A. Stable Diporphyrinylaminyl Radical and Nitrenium Ion. Angew Chem Int Ed Engl 2018; 57:9434-9438. [PMID: 29882340 DOI: 10.1002/anie.201805385] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Indexed: 11/10/2022]
Abstract
Nitrenium ions, isoelectronic nitrogen counterparts of carbenes, are important intermediates in various biological and chemical processes. Herein we describe the first synthesis and characterization of a stable nitrenium ion without resonance stabilization by adjoining amino groups. Namely, a stable salt of a diporphyrinylnitrenium ion was synthesized by stepwise oxidation of the corresponding diporphyrinylamine through a stable aminyl radical. The nitrenium ion exhibits characteristic features such as a singlet ground state, enhanced double-bond character of the central C-N bonds, no reactivity toward water and methanol, and negative solvatochromic behavior.
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Affiliation(s)
- Daiki Shimizu
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Keisuke Fujimoto
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
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15
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Shimizu D, Fujimoto K, Osuka A. Stable Diporphyrinylaminyl Radical and Nitrenium Ion. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201805385] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Daiki Shimizu
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo-ku Kyoto 606-8502 Japan
| | - Keisuke Fujimoto
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo-ku Kyoto 606-8502 Japan
| | - Atsuhiro Osuka
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo-ku Kyoto 606-8502 Japan
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16
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Kato K, Furukawa K, Osuka A. A Stable Trimethylenemethane Triplet Diradical Based on a Trimeric Porphyrin Fused π-System. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201804644] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kenichi Kato
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo-ku Kyoto 606-8502 Japan
| | - Ko Furukawa
- Center for Instrumental Analysis; Niigata University; Nishi-ku Niigata 950-2181 Japan
| | - Atsuhiro Osuka
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo-ku Kyoto 606-8502 Japan
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17
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Kato K, Furukawa K, Osuka A. A Stable Trimethylenemethane Triplet Diradical Based on a Trimeric Porphyrin Fused π-System. Angew Chem Int Ed Engl 2018; 57:9491-9494. [PMID: 29858542 DOI: 10.1002/anie.201804644] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Indexed: 11/08/2022]
Abstract
Trimethylenemethane (TMM) diradical is the simplest non-Kekulé non-disjoint molecule with the triplet ground state (ΔEST =+16.1 kcal mol-1 ) and is extremely reactive. It is a challenge to design and synthesize a stable TMM diradical with key properties, such as actual aliphatic TMM diradical centers and the triplet ground state with a large positive ΔEST value, since such species provide detailed information on the electronic structure of TMM diradical. Herein we report a TMM derivative, in which the TMM segment is fused with three NiII meso-triarylporphyrins, that satisfies the above criteria. The diradical shows delocalized spin density on the propeller-like porphyrin π-network and the triplet ground state owing to the strong ferromagnetic interaction. Despite the apparent TMM structure, the diradical can be handled under ambient conditions and can be stored for months in the solid state, thus allowing its X-ray diffraction structural analysis.
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Affiliation(s)
- Kenichi Kato
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku Kyoto, 606-8502, Japan
| | - Ko Furukawa
- Center for Instrumental Analysis, Niigata University, Nishi-ku, Niigata, 950-2181, Japan
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku Kyoto, 606-8502, Japan
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18
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Fujimoto K, Osuka A. A 1,5-Naphthyridine-Fused Porphyrin Dimer: Intense NIR Absorption and Facile Redox Interconversion with Its Reduced Congener. Chemistry 2018. [PMID: 29536577 DOI: 10.1002/chem.201800854] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
PtII -catalyzed cyclization of β-to-β ethynylene-bridged meso-amino NiII porphyrin dimer 4 followed by oxidation with PbO2 afforded 1,5-naphthyridine-fused porphyrin dimer 5 in good yield. This dimer possesses a redox-active 1,4-diazabutadiene linkage that is interconvertible with its reduced 1,2-diaminoethene linkage upon treatments with NaBH4 or PbO2 . The dimer 5 exhibits an intense NIR absorption and a narrow HOMO-LUMO gap with a remarkably low reduction potential mainly due to effective bonding interactions in the LUMO through the 1,4-diazabutadiene linkage. In contrast, the reduced dimer 7 is fairly electron-rich with high HOMO energy and shows a relatively large HOMO-LUMO gap compared to that of 5.
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Affiliation(s)
- Keisuke Fujimoto
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku Kyoto, 606-8502, Japan
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku Kyoto, 606-8502, Japan
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19
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Shimizu D, Osuka A. A Benzene-1,3,5-Triaminyl Radical Fused with ZnII
-Porphyrins: Remarkable Stability and a High-Spin Quartet Ground State. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201801080] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Daiki Shimizu
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo-ku Kyoto 606-8502 Japan
| | - Atsuhiro Osuka
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo-ku Kyoto 606-8502 Japan
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20
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Shimizu D, Osuka A. A Benzene-1,3,5-Triaminyl Radical Fused with Zn II -Porphyrins: Remarkable Stability and a High-Spin Quartet Ground State. Angew Chem Int Ed Engl 2018; 57:3733-3736. [PMID: 29442422 DOI: 10.1002/anie.201801080] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Indexed: 11/06/2022]
Abstract
A benzene-1,3,5-triaminyl radical fused with three ZnII -porphyrins was synthesized through a three-fold oxidative fusion reaction of 1,3,5-tris(ZnII -porphyrinylamino)benzene followed by oxidation with PbO2 as key steps. This triaminyl radical has been shown to possess a quartet ground state with a doublet-quartet energy gap of 3.1 kJ mol-1 by superconducting quantum interference device (SQUID) studies. Despite its high-spin nature, this triradical is remarkably stable, which allows its separation and recrystallization under ambient conditions. Moreover, this triradical can be stored as a solid for more than one year without serious deterioration. The high stability of the triradical is attributed to effective spin delocalization over the porphyrin segments and steric protection at the nitrogen centers and the porphyrin meso positions.
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Affiliation(s)
- Daiki Shimizu
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
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21
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Jun-I Y, Fukui N, Furukawa K, Osuka A. Metalation Control of Open-Shell Character in meso-meso Linked Porphyrin meso-Oxy Radical Dimers. Chemistry 2018; 24:1528-1532. [PMID: 29276810 DOI: 10.1002/chem.201705769] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Indexed: 12/21/2022]
Abstract
Control of open-shell character of meso-meso linked porphyrin meso-oxy radical dimers has been demonstrated by core metalation. Namely, NiII -porphyrin dimer 6Ni exhibits a clear 1 H NMR spectrum and a distorted but rather coplanar quinonoidal structure consisting of two ruffled porphyrin rings, in accordance with the previous report. Freebase dimer 6H2 shows a similar quinonoidal structure in the solid state but displays slightly broader and temperature-dependent 1 H NMR spectra, indicating a partial diradical character in solution that increases at high temperature. In sharp contrast, bis-imidazole-coordinated ZnII -porphyrin dimer 6ZnIm2 exhibits a perpendicular structure consisting of two planar ZnII -porphyrins and has been characterized as a distinct open-shell diradical on the basis of its non-observable 1 H NMR signals, a clear ESR signal, and a characteristic absorption spectrum reaching about 1700 nm. Despite the distinct diradical character, 6ZnIm2 is an extremely stable molecule.
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Affiliation(s)
- Yuta Jun-I
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Norihito Fukui
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Ko Furukawa
- Center for Coordination of Research Facilities, Niigata University, Nishi-ku, Niigata, 950-2181, Japan
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
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Kato K, Furukawa K, Mori T, Osuka A. Porphyrin-Based Air-Stable Helical Radicals. Chemistry 2017; 24:572-575. [DOI: 10.1002/chem.201705291] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Kenichi Kato
- Department of Chemistry, Graduate School of Science; Kyoto University; Sakyo-ku Kyoto 606-8502 Japan
| | - Ko Furukawa
- Center for Instrumental Analysis; Niigata University; Nishi-ku, Niigata 950-2181 Japan
| | - Tadashi Mori
- Department of Applied Chemistry, Graduate School of Engineering; Osaka University; Suita, Osaka 565-871 Japan
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science; Kyoto University; Sakyo-ku Kyoto 606-8502 Japan
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23
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Yamasumi K, Nishimura K, Hisamune Y, Nagae Y, Uchiyama T, Kamitani K, Hirai T, Nishibori M, Mori S, Karasawa S, Kato T, Furukawa K, Ishida M, Furuta H. Bis-Copper(II)/π-Radical Multi-Heterospin System with Non-innocent Doubly N
-Confused Dioxohexaphyrin(1.1.1.1.1.0) Ligand. Chemistry 2017; 23:15322-15326. [DOI: 10.1002/chem.201704321] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Kazuhisa Yamasumi
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Center for Molecular Systems; Kyushu University; Fukuoka 819-0395 Japan
| | - Keiichi Nishimura
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Center for Molecular Systems; Kyushu University; Fukuoka 819-0395 Japan
| | - Yutaka Hisamune
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Center for Molecular Systems; Kyushu University; Fukuoka 819-0395 Japan
| | - Yusuke Nagae
- Institute for Materials Chemistry and Engineering; Kyushu University; Fukuoka 819-0395 Japan
| | - Tomoki Uchiyama
- Japan Synchrotron Radiation Research Institute, SPring-8; Hyogo 679-5198 Japan
| | - Kazutaka Kamitani
- Institute for Materials Chemistry and Engineering; Kyushu University; Fukuoka 819-0395 Japan
| | - Tomoyasu Hirai
- Institute for Materials Chemistry and Engineering; Kyushu University; Fukuoka 819-0395 Japan
| | - Maiko Nishibori
- Faculty of Engineering Sciences; Kyushu University; Fukuoka 816-8580 Japan
| | - Shigeki Mori
- Advanced Research Support Center; Ehime University; Matsuyama 790-8577 Japan
| | - Satoru Karasawa
- Division of Pharmaceutical Chemistry; Showa Pharmaceutical University; Machida 194-8543 Japan
| | - Tatsuhisa Kato
- Institute for Liberal Arts and Sciences; Kyoto University; Kyoto 606-8501 Japan
| | - Ko Furukawa
- Center for Instrumental Analysis, Institute for Research Promotion; Niigata University; Niigata 950-2181 Japan
| | - Masatoshi Ishida
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Center for Molecular Systems; Kyushu University; Fukuoka 819-0395 Japan
| | - Hiroyuki Furuta
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Center for Molecular Systems; Kyushu University; Fukuoka 819-0395 Japan
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24
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Zhang H, Phan H, Herng TS, Gopalakrishna TY, Zeng W, Ding J, Wu J. Conformationally Flexible Bis(9-fluorenylidene)porphyrin Diradicaloids. Angew Chem Int Ed Engl 2017; 56:13484-13488. [DOI: 10.1002/anie.201707480] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Hejian Zhang
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 117543 Singapore Singapore
| | - Hoa Phan
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 117543 Singapore Singapore
| | - Tun Seng Herng
- Department of Materials Science and Engineering; National University of Singapore; 119260 Singapore Singapore
| | | | - Wangdong Zeng
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 117543 Singapore Singapore
| | - Jun Ding
- Department of Materials Science and Engineering; National University of Singapore; 119260 Singapore Singapore
| | - Jishan Wu
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 117543 Singapore Singapore
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25
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Zhang H, Phan H, Herng TS, Gopalakrishna TY, Zeng W, Ding J, Wu J. Conformationally Flexible Bis(9-fluorenylidene)porphyrin Diradicaloids. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201707480] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Hejian Zhang
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 117543 Singapore Singapore
| | - Hoa Phan
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 117543 Singapore Singapore
| | - Tun Seng Herng
- Department of Materials Science and Engineering; National University of Singapore; 119260 Singapore Singapore
| | | | - Wangdong Zeng
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 117543 Singapore Singapore
| | - Jun Ding
- Department of Materials Science and Engineering; National University of Singapore; 119260 Singapore Singapore
| | - Jishan Wu
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 117543 Singapore Singapore
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26
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Naoda K, Shimizu D, Kim JO, Furukawa K, Kim D, Osuka A. Thienylquinonoidal Porphyrins and Hexaphyrins with Singlet Diradical Ground States. Chemistry 2017; 23:8969-8979. [DOI: 10.1002/chem.201701355] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2017] [Indexed: 12/17/2022]
Affiliation(s)
- Koji Naoda
- Department of Chemistry; Graduate School of Science; Kyoto University, Sakyo-ku; Kyoto 606-8502 Japan
| | - Daiki Shimizu
- Department of Chemistry; Graduate School of Science; Kyoto University, Sakyo-ku; Kyoto 606-8502 Japan
| | - Jun Oh Kim
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry; Yonsei University; Seoul 120-749 Korea
| | - Ko Furukawa
- Center for Instrumental Analysis; Niigata University, Nishi-ku; Niigata 950-2181 Japan
| | - Dongho Kim
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry; Yonsei University; Seoul 120-749 Korea
| | - Atsuhiro Osuka
- Department of Chemistry; Graduate School of Science; Kyoto University, Sakyo-ku; Kyoto 606-8502 Japan
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27
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Shimizu D, Furukawa K, Osuka A. Stable Subporphyrin meso
-Aminyl Radicals without Resonance Stabilization by a Neighboring Heteroatom. Angew Chem Int Ed Engl 2017; 56:7435-7439. [DOI: 10.1002/anie.201703097] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2017] [Indexed: 12/12/2022]
Affiliation(s)
- Daiki Shimizu
- Department of Chemistry; Graduate School of Science; Kyoto University, Sakyo-ku; Kyoto 606-8502 Japan
| | - Ko Furukawa
- Center for Instrumental Analysis; Niigata University, Nishi-ku; Niigata 950-2181 Japan
| | - Atsuhiro Osuka
- Department of Chemistry; Graduate School of Science; Kyoto University, Sakyo-ku; Kyoto 606-8502 Japan
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28
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Shimizu D, Furukawa K, Osuka A. Stable Subporphyrin meso
-Aminyl Radicals without Resonance Stabilization by a Neighboring Heteroatom. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201703097] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Daiki Shimizu
- Department of Chemistry; Graduate School of Science; Kyoto University, Sakyo-ku; Kyoto 606-8502 Japan
| | - Ko Furukawa
- Center for Instrumental Analysis; Niigata University, Nishi-ku; Niigata 950-2181 Japan
| | - Atsuhiro Osuka
- Department of Chemistry; Graduate School of Science; Kyoto University, Sakyo-ku; Kyoto 606-8502 Japan
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29
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Fujimoto K, Kasuga Y, Fukui N, Osuka A. Diphenylphosphine-Oxide-Fused and Diphenylphosphine-Fused Porphyrins: Synthesis, Tunable Electronic Properties, and Formation of Cofacial Dimers. Chemistry 2017; 23:6741-6745. [PMID: 28397373 DOI: 10.1002/chem.201700909] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Indexed: 11/09/2022]
Abstract
Diphenylphosphine-oxide-fused NiII porphyrin 8 was synthesized from 3,5,7-trichloroporphyrin 5 via a reaction sequence of nucleophilic aromatic substitution with lithium diphenylphosphide, oxidation with H2 O2 , and palladium-catalyzed intramolecular cyclization. Reduction of 8 with HSiCl3 gave diphenylphosphine-fused NiII porphyrin 9. The embedded P=O and P moieties serve as a strong electron-accepting and electron-donating group to perturb the optical and electrochemical properties of the NiII porphyrin. NiII porphyrin 9 is diamagnetic with a low-spin NiII center in solution but becomes paramagnetic with a five-coordinated NiII center with high-spin (S=1) state in the solid state. Diphenylphosphine-oxide-fused ZnII porphyrin 10 was also synthesized and shown to form a face-to-face dimer with mutual O-Zn bonds in the crystal and in nonpolar and moderately polar solvents. The dimerization of 10 in CDCl3 has been revealed to be an entropy-driven process with a large entropy gain (ΔSD =207 J K-1 mol-1 ).
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Affiliation(s)
- Keisuke Fujimoto
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Yuko Kasuga
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Norihito Fukui
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
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30
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Achary BS, Gokulnath S, Ghosh S, Mrinalini M, Prasanthkumar S, Giribabu L. Unprecedented Charge-Transfer Complex of Fused Diporphyrin as Near-Infrared Absorption-Induced High-Aspect-Ratio Nanorods. Chem Asian J 2016; 11:3498-3502. [PMID: 27781413 DOI: 10.1002/asia.201601363] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Indexed: 12/22/2022]
Abstract
Charge-transfer (CT) complexes of near-infrared absorbing systems have been unknown until now. Consequently, structural similarities between donor and acceptor are rather important to achieve this phenomenon. Herein, we report electron donors such as non-fused diporphyrin-anthracene (DP), zinc diporphyrin-anthracene (ZnDP) and fused zinc diporphyrin-anthracene (FZnDP) in which FZnDP absorbs in NIR region and permits a CT complex with the electron acceptor, perylene diimide (PDI) in CHCl3 exclusively. UV/Vis-NIR absorption, 1 H NMR, NOESY and powder X-ray diffraction analysis demonstrated that the CT complex formation occurs by π-π stacking between perylene units in FZnDP and PDI upon mixing together in a 1:1 molar concentration in CHCl3 , unlike non-fused ZnDP and DP. TEM and AFM images revealed that the CT complex initially forms nanospheres leading to nanorods by diffusion of CH3 OH vapors into the CHCl3 solution of FZnDP/PDI (1:1 molar ratio). Therefore, these CT nanorods could lead to significant advances in optical, biological and ferroelectric applications.
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Affiliation(s)
- B Shivaprasad Achary
- Inorganic & Physical Chemistry Division, CSIR-Indian Institute of Chemical Technology (IICT), Tarnaka, Hyderabad-500007, Telangana, India
| | - Sabapathi Gokulnath
- School of Chemistry, Indian Institute of Scientific and Educational Research (IISER), Trivandrum-695016, Kerala, India
| | - Samrat Ghosh
- Photoscience&Photonics Division, CSIR-National Institute of Interdisciplinary Science and Technology (NIIST), Trivandrum-695019, Kerala, India
| | - Madoori Mrinalini
- Inorganic & Physical Chemistry Division, CSIR-Indian Institute of Chemical Technology (IICT), Tarnaka, Hyderabad-500007, Telangana, India
| | - Seelam Prasanthkumar
- Inorganic & Physical Chemistry Division, CSIR-Indian Institute of Chemical Technology (IICT), Tarnaka, Hyderabad-500007, Telangana, India
| | - Lingamallu Giribabu
- Inorganic & Physical Chemistry Division, CSIR-Indian Institute of Chemical Technology (IICT), Tarnaka, Hyderabad-500007, Telangana, India.,Academy of Scientific and Innovation Research (AcSIR), New Delhi, India
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31
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Fukui N, Yorimitsu H, Osuka A. meso-meso-Linked Diarylamine-Fused Porphyrin Dimers. Chemistry 2016; 22:18476-18483. [PMID: 27859737 DOI: 10.1002/chem.201604301] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Indexed: 12/13/2022]
Abstract
A meso-meso-linked diphenylamine-fused porphyrin dimer and its methoxy-substituted analogue were synthesized from a meso-meso-linked porphyrin dimer by a reaction sequence involving Ir-catalyzed β-selective borylation, iodination, meso-chlorination, and SN Ar reactions with diarylamines followed by electron-transfer-mediated intramolecular double C-H/C-I coupling. While these dimers commonly display characteristic split Soret bands and small oxidation potentials, they produced different products upon oxidation with tris(4-bromophenyl)aminium hexachloroantimonate. Namely, the diphenylamine-fused porphyrin dimer was converted into a dicationic closed-shell quinonoidal dimer, while the methoxy-substituted dimer gave a meso-meso, β-β doubly linked porphyrin dimer.
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Affiliation(s)
- Norihito Fukui
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Hideki Yorimitsu
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
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32
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Liu B, Yoshida T, Li X, Stępień M, Shinokubo H, Chmielewski PJ. Reversible Carbon-Carbon Bond Breaking and Spin Equilibria in Bis(pyrimidinenorcorrole). Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201607237] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Bin Liu
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecules; Ministry of Education; School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan Hunan 411201 China
| | - Takuya Yoshida
- Department of Applied Chemistry; Graduate School of Engineering; Nagoya University; Nagoya 464-8603 Japan
| | - Xiaofang Li
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecules; Ministry of Education; School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan Hunan 411201 China
| | - Marcin Stępień
- Department of Chemistry; University of Wrocław; F. Joliot-Curie 14 50383 Wrocław Poland
| | - Hiroshi Shinokubo
- Department of Applied Chemistry; Graduate School of Engineering; Nagoya University; Nagoya 464-8603 Japan
| | - Piotr J. Chmielewski
- Department of Chemistry; University of Wrocław; F. Joliot-Curie 14 50383 Wrocław Poland
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33
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Liu B, Yoshida T, Li X, Stępień M, Shinokubo H, Chmielewski PJ. Reversible Carbon-Carbon Bond Breaking and Spin Equilibria in Bis(pyrimidinenorcorrole). Angew Chem Int Ed Engl 2016; 55:13142-13146. [DOI: 10.1002/anie.201607237] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Indexed: 01/18/2023]
Affiliation(s)
- Bin Liu
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecules; Ministry of Education; School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan Hunan 411201 China
| | - Takuya Yoshida
- Department of Applied Chemistry; Graduate School of Engineering; Nagoya University; Nagoya 464-8603 Japan
| | - Xiaofang Li
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecules; Ministry of Education; School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan Hunan 411201 China
| | - Marcin Stępień
- Department of Chemistry; University of Wrocław; F. Joliot-Curie 14 50383 Wrocław Poland
| | - Hiroshi Shinokubo
- Department of Applied Chemistry; Graduate School of Engineering; Nagoya University; Nagoya 464-8603 Japan
| | - Piotr J. Chmielewski
- Department of Chemistry; University of Wrocław; F. Joliot-Curie 14 50383 Wrocław Poland
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Ryoji-Noyori-Preis: L. E. Overman / Mukaiyama-Preis: M. C. White und H. Yorimitsu / Van't-Hoff-Preis: K. Kern und C. Wöll / In die Australian Academy of Science gewählt: J. J. Gooding / Liebig-Denkmünze: M. Antonietti / Hermann-Staudinger-Preis: K. Müllen. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201606831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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35
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Ryoji Noyori Prize: L. E. Overman / Mukaiyama Award: M. C. White and H. Yorimitsu / van ’t Hoff Prize: K. Kern and C. Wöll / Elected to the Australian Academy of Science: J. J. Gooding / Liebig Memorial Medal: M. Antonietti / Hermann Staudinger Prize: K. Angew Chem Int Ed Engl 2016; 55:11333-4. [DOI: 10.1002/anie.201606831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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36
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Bahnmüller S, Plotzitzka J, Baabe D, Cordes B, Menzel D, Schartz K, Schweyen P, Wicht R, Bröring M. Hexaethyltripyrrindione (H3Et6tpd): A Non-Innocent Ligand Forming Stable Radical Complexes with Divalent Transition-Metal Ions. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600934] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Stefanie Bahnmüller
- Institute of Inorganic and Analytical Chemistry; TU Braunschweig; Hagenring 30 38106 Braunschweig Germany
| | - Jacqueline Plotzitzka
- Institute of Inorganic and Analytical Chemistry; TU Braunschweig; Hagenring 30 38106 Braunschweig Germany
| | - Dirk Baabe
- Institute of Inorganic and Analytical Chemistry; TU Braunschweig; Hagenring 30 38106 Braunschweig Germany
| | - Birte Cordes
- Institute of Inorganic and Analytical Chemistry; TU Braunschweig; Hagenring 30 38106 Braunschweig Germany
| | - Dirk Menzel
- Institute of Condensed Matter Physics; TU Braunschweig; Mendelssohnstraße 2-3 38106 Braunschweig Germany
| | - Katharina Schartz
- Institute of Inorganic and Analytical Chemistry; TU Braunschweig; Hagenring 30 38106 Braunschweig Germany
| | - Peter Schweyen
- Institute of Inorganic and Analytical Chemistry; TU Braunschweig; Hagenring 30 38106 Braunschweig Germany
| | - Richard Wicht
- Institute of Inorganic and Analytical Chemistry; TU Braunschweig; Hagenring 30 38106 Braunschweig Germany
| | - Martin Bröring
- Institute of Inorganic and Analytical Chemistry; TU Braunschweig; Hagenring 30 38106 Braunschweig Germany
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