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Maekawa M, Hayashi T, Sugimoto K, Okubo T, Kuroda-Sowa T. Structural diversity of copper(I)-ethylene complexes with 2,4-bis(2-pyridyl)pyrimidine directed by anions. Dalton Trans 2023; 52:14941-14948. [PMID: 37800189 DOI: 10.1039/d3dt02618c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/07/2023]
Abstract
The 3 : 1 reaction of [Cu(C2H4)n]ClO4 with 2,4-bis(2-pyridyl)pyrimidine (bpprd) in Me2CO under C2H4 afforded yellow prism crystals of the dinuclear Cu(I)-C2H4 complex [Cu2(bpprd)(η2-C2H4)2(ClO4)2] (1). The 3 : 1 reaction of [Cu(C2H4)n]NO3 with bpprd in Me2CO under C2H4 afforded yellow plate crystals of the tetranuclear Cu(I)-C2H4 complex [Cu4(bpprd)2(η2-C2H4)4(μ-NO3)2](NO3)2 (2). The 10 : 1 reaction of [Cu(C2H4)n]BF4 with bpprd in Me2CO under C2H4 afforded yellow plate crystals of the dinuclear Cu(I)-C2H4 complex [Cu2(bpprd)(η2-C2H4)2(BF4)]BF4 (3). The 3 : 1 reaction of [Cu(C2H4)n]BF4 with bpprd in Me2CO under C2H4 afforded red prism crystals of the polymeric Cu(I)-C2H4 complex {[Cu6(bpprd)4(η2-C2H4)2(μ-η2:η2-C2H4)(μ-BF4)2](BF4)4}n (4). The X-ray crystal structures of complexes 1-4 have been determined. The structural diversity of Cu(I)-C2H4 complexes bridged by bpprd with different anions was demonstrated. The 1D Cu(I)-bpprd/C2H4 coordination polymer 4 bridged by unusual μ-η2:η2-C2H4 and the μ-BF4- anion is of particular significance. Complex 1 exhibited relatively well-resolved 1H NMR signals of bpprd and C2H4 (δ = 4.97 ppm) in (CD3)2CO at 23 °C.
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Affiliation(s)
- Masahiko Maekawa
- Research Institute for Science and Technology, Kindai University, Kowakae, Higashi-Osaka, Osaka 577-8502, Japan.
| | - Terumasa Hayashi
- Department of Chemistry, Kindai University, Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Kunihisa Sugimoto
- Department of Chemistry, Kindai University, Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Takashi Okubo
- Department of Chemistry, Kindai University, Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Takayoshi Kuroda-Sowa
- Department of Chemistry, Kindai University, Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
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Maekawa M, Yabuta M, Sugimoto K, Okubo T, Kuroda-Sowa T. Structurally diverse dinuclear Cu(I) complexes and 1D helical Cu(I) coordination polymers bridged by 2,2′:6′,4″-terpyridine. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Schnierle M, Blickle S, Filippou V, Ringenberg MR. Tetrazine metallation boosts rate and regioselectivity of inverse electron demand Diels-Alder (iEDDA) addition of dienophiles. Chem Commun (Camb) 2020; 56:12033-12036. [PMID: 32902528 DOI: 10.1039/d0cc03805a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Reported herein is the coordination of rhenium complexes to tetrazine ligand in [ReCl(CO)3(TzPy)] [1] (TzPy = 3-(2-pyridyl)-1,2,4,5-tetrazine) and the rates of addition of different dienophiles to the tetrazine. Tetrazine coordiation lowers the ΔS‡ contribution to ΔG‡ for iEDDA addition.
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Affiliation(s)
- Marc Schnierle
- Universität Stuttgart, Institut für Anorganische Chemie, Pfaffenwaldring 55, 70569 Stuttgart, Germany.
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4
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Haiduc I. Review. Inverse coordination. Organic nitrogen heterocycles as coordination centers. A survey of molecular topologies and systematization. Part 2. Six-membered rings. J COORD CHEM 2019. [DOI: 10.1080/00958972.2019.1670349] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Ionel Haiduc
- Facultatea de Chimie, Universitatea Babeş-Bolyai, Cluj-Napoca, Romania
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5
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Dipicolylamino-methoxy-1,2,4,5-tetrazine ligand and its metal complexes: Structural and photophysical studies. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.05.050] [Citation(s) in RCA: 4] [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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6
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Stetsiuk O, El-Ghayoury A, Lloret F, Julve M, Avarvari N. Mononuclear and One-Dimensional Cobalt(II) Complexes with the 3,6-Bis(picolylamino)-1,2,4,5-tetrazine Ligand. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201701224] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Oleh Stetsiuk
- Laboratoire MOLTECH-Anjou, UMR 6200; CNRS Université d'Angers, UFR Sciences, Bât. K; 2 Bd. Lavoisier 49045 Angers France
- Department of Inorganic Chemistry; Taras Shevchenko National University of Kyiv; Volodymyrska str. 64/13 01601 Kyiv Ukraine
| | - Abdelkrim El-Ghayoury
- Laboratoire MOLTECH-Anjou, UMR 6200; CNRS Université d'Angers, UFR Sciences, Bât. K; 2 Bd. Lavoisier 49045 Angers France
| | - Francesc Lloret
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica; Universitat de València; C/Catedrático José Beltrán 2 46980 Paterna (Valencia) Spain
| | - Miguel Julve
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica; Universitat de València; C/Catedrático José Beltrán 2 46980 Paterna (Valencia) Spain
| | - Narcis Avarvari
- Laboratoire MOLTECH-Anjou, UMR 6200; CNRS Université d'Angers, UFR Sciences, Bât. K; 2 Bd. Lavoisier 49045 Angers France
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Structural diversity of copper(I) cyclodiene complexes bridged by 3,6-bis(2-pyridyl)-1,2,4,5-tetrazine. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2017.08.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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8
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Mononuclear, tetranuclear and polymeric cadmium(II) complexes with the 3,6-bis(2-pyridyl)-1,2,4,5-tetrazine ligand: Synthesis, crystal structure, spectroscopic and DFT studies. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.08.030] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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9
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Polezhaev AV, Maciulis NA, Chen CH, Pink M, Lord RL, Caulton KG. Tetrazine Assists Reduction of Water by Phosphines: Application in the Mitsunobu Reaction. Chemistry 2016; 22:13985-13998. [PMID: 27535201 DOI: 10.1002/chem.201600913] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Indexed: 11/06/2022]
Abstract
Reaction of 3,6-disubstituted-1,2,4,5-tetrazines with water and PEt3 forms the corresponding 1,4-dihydrotetrazine and OPEt3 . Thus PEt3 , as a stoichiometric reductant, reduces water, and the resulting two reducing equivalents serve to doubly hydrogenate the tetrazine. A variety of possible initial interactions between electron-deficient tetrazine and electron-rich PR3 , including a charge transfer complex, were evaluated by density functional calculations which revealed that the energy of all these make them spectroscopically undetectable at equilibrium, but one of these is nevertheless suggested as the intermediate in the observed redox reaction. The relationship of this to the Mitsunobu reaction, which absorbs the components of water evolved in the conversion of alcohol and carboxylic acid to ester, with desirable inversion at the alcohol carbon, is discussed. This enables a modified Mitsunobu reaction, with tetrazine replacing EtO2 CN=NCO2 Et (DEAD), which has the advantage that dihydrotetrazine can be recycled to tetrazine by oxidation with O2 , something impossible with the hydrogenated DEAD. For this tetrazine version, a betaine-like intermediate is undetectable, but its protonated form is characterized, including by X-ray structure and NMR spectroscopy.
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Affiliation(s)
- Alexander V Polezhaev
- Department of Chemistry, Indiana University Bloomington, 47405, Bloomington, IN, USA
| | - Nicholas A Maciulis
- Department of Chemistry, Indiana University Bloomington, 47405, Bloomington, IN, USA
| | - Chun-Hsing Chen
- Department of Chemistry, Indiana University Bloomington, 47405, Bloomington, IN, USA
| | - Maren Pink
- Department of Chemistry, Indiana University Bloomington, 47405, Bloomington, IN, USA
| | - Richard L Lord
- Department of Chemistry, Grand Valley State University, 49401, Allendale, MI, USA
| | - Kenneth G Caulton
- Department of Chemistry, Indiana University Bloomington, 47405, Bloomington, IN, USA.
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Maekawa M, Sugimoto K, Okubo T, Kuroda-Sowa T, Munakata M. Structurally Diverse Polynuclear Copper(I) Complexes Bridged by Pyrimidine-, Pyrazine-, and Triazine-based Ligands with Several 2-Pyridyl Groups. ChemistrySelect 2016. [DOI: 10.1002/slct.201600791] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Masahiko Maekawa
- Research Institute for Science and Technology; Kinki University; 3-4-1 Kowakae, Higashi-Osaka Osaka 577-8502 Japan
| | - Kunihisa Sugimoto
- Research and Utilization Division; Japan Synchrotron Radiation Research Institute; 1-1 Kouto, Sayo-cho, Sayo-gun Hyogo 679-5198 Japan
| | - Takashi Okubo
- Department of Chemistry; Kinki University; 3-4-1 Kowakae, Higashi-Osaka Osaka 577-8502 Japan
| | - Takayoshi Kuroda-Sowa
- Department of Chemistry; Kinki University; 3-4-1 Kowakae, Higashi-Osaka Osaka 577-8502 Japan
| | - Megumu Munakata
- Department of Chemistry; Kinki University; 3-4-1 Kowakae, Higashi-Osaka Osaka 577-8502 Japan
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One-dimensional mercury(II) halide coordination polymers of 3,6-bis(2-pyridyl)-1,2,4,5-tetrazine ligand: Synthesis, crystal structure, spectroscopic and DFT studies. J SOLID STATE CHEM 2016. [DOI: 10.1016/j.jssc.2015.11.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Nazarenko I, Pop F, Sun Q, Hauser A, Lloret F, Julve M, El-Ghayoury A, Avarvari N. Structural, photophysical and magnetic properties of transition metal complexes based on the dipicolylamino-chloro-1,2,4,5-tetrazine ligand. Dalton Trans 2015; 44:8855-66. [PMID: 25868861 DOI: 10.1039/c5dt00550g] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The ligand 3-chloro-6-dipicolylamino-1,2,4,5-tetrazine (Cl-TTZ-dipica) , prepared by the direct reaction between 3,6-dichloro-1,2,4,5-tetrazine and di(2-picolyl)-amine, afforded a series of four neutral transition metal complexes formulated as [Cl-TTZ-dipica-MCl2]2, with M = Zn(II), Cd(II), Mn(II) and Co(II), when reacted with the corresponding metal chlorides. The dinuclear structure of the isostructural complexes was disclosed by single crystal X-ray analysis, clearly indicating the formation of [M(II)-(μ-Cl)2M(II)] motifs and the involvement of the amino nitrogen atom in semi-coordination with the metal centers, thus leading to distorted octahedral coordination geometries. Moreover, the chlorine atoms, either coordinated to the metal or as a substituent on the tetrazine ring, engage respectively in specific anion-π intramolecular and intermolecular interactions with the electron-poor tetrazine units in the solid state, thus controlling the supramolecular architecture. Modulation of the emission properties is observed in the case of the Zn(II) and Cd(II) complexes when compared to the free ligand. A striking difference is observed in the magnetic properties of the Mn(II) and Co(II) complexes. An antiferromagnetic coupling takes place in the dimanganese(II) compound (J = -1.25 cm(-1)) while the Co(II) centers are ferromagnetically coupled in the corresponding complex (J = +0.55 cm(-1)), the spin Hamiltonian being defined as H = -JSA·SB.
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Affiliation(s)
- Iuliia Nazarenko
- Laboratoire MOLTECH Anjou, UMR 6200, UFR Sciences, CNRS, Université d'Angers, Bât. K, 2 Bd. Lavoisier, 49045 Angers Cedex, France.
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Kawamoto K, Grindy SC, Liu J, Holten-Andersen N, Johnson JA. Dual Role for 1,2,4,5-Tetrazines in Polymer Networks: Combining Diels-Alder Reactions and Metal Coordination To Generate Functional Supramolecular Gels. ACS Macro Lett 2015; 4:458-461. [PMID: 35596313 DOI: 10.1021/acsmacrolett.5b00221] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The inverse-electron demand Diels-Alder cycloaddition of tetrazines and olefins has emerged as a powerful coupling reaction for the formation of polymer gels with diverse applications. Tetrazines are also excellent ligands for metal atoms. For example, 3,6-bis(2-pyridyl)-1,2,4,5-tetrazines (bptz) have been used to generate discrete supramolecular Mxbptzy metal clusters and extended 2D grid structures. We reasoned that both the Diels-Alder and the metal-coordination modes of reactivity of bptz derivatives could be leveraged in the context of hydrogel design to yield novel hybrid materials. Here we report on the formation of supramolecular hydrogels via substoichiometric Diels-Alder functionalization of bptz ligands bound to the ends of poly(ethylene glycol) (PEG) chains followed by metal-coordination-induced gelation in the presence of Ni2+ and Fe2+ salts. Our results show that simple bptz-based polymers are versatile precursors to a diverse range of novel functional materials.
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Affiliation(s)
- Ken Kawamoto
- Department of Chemistry and ‡Department of Materials
Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts
Avenue, Cambridge, Massachusetts 02139, United States
| | - Scott C. Grindy
- Department of Chemistry and ‡Department of Materials
Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts
Avenue, Cambridge, Massachusetts 02139, United States
| | - Jenny Liu
- Department of Chemistry and ‡Department of Materials
Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts
Avenue, Cambridge, Massachusetts 02139, United States
| | - Niels Holten-Andersen
- Department of Chemistry and ‡Department of Materials
Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts
Avenue, Cambridge, Massachusetts 02139, United States
| | - Jeremiah A. Johnson
- Department of Chemistry and ‡Department of Materials
Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts
Avenue, Cambridge, Massachusetts 02139, United States
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Maekawa M, Sugimoto K, Okubo T, Kuroda-Sowa T, Munakata M. Dinuclear and polymeric copper(I) ethylene adducts bridged by bis-pyridyl derivatives of 1,2,4-triazole and 1,2,4,5-tetrazine. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2014.10.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Maekawa M, Minamino A, Sugimoto K, Okubo T, Kuroda-Sowa T, Munakata M. The first copper(I) coordination polymers self-assembled by 4,4′-biquinazoline. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.02.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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