1
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Batabyal M, Chaurasia D, Panda PR, Jha RK, Kadu R, Kumar S. Benzoimidazolyl Organoseleniums: Antioxidant Activity and Catalysts for Selective Iodination of Arenes and Nitro-Michael Reaction. J Org Chem 2024; 89:14328-14340. [PMID: 39283162 DOI: 10.1021/acs.joc.4c01757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/05/2024]
Abstract
Here, the synthesis and catalytic activities of benzoimidazole-derived organoselenium compounds have been explored. The synthesized bis(2-benzoimidazolyl) diselenide, having increased Lewis acidity on the selenium center, outperforms simple phenyl and N-phenyl benzamide-based diselenides when compared for thiol peroxidase hydrogen peroxide decomposing antioxidant activity with a reduction rate of 18.6 ± 1.9 μM/s. The synthesized diselenide also acted as an efficient catalyst for the activation of N-iodo-succinimide toward the regioselective, monoiodination of electron-rich arenes and activation of nitro-alkene for nitro-Michael reactions for the first time.
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Affiliation(s)
- Monojit Batabyal
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal by-pass Road, Bhauri, Bhopal, Madhya Pradesh 462066, India
| | - Deeksha Chaurasia
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal by-pass Road, Bhauri, Bhopal, Madhya Pradesh 462066, India
| | - Priyanka Rani Panda
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal by-pass Road, Bhauri, Bhopal, Madhya Pradesh 462066, India
| | - Raushan Kumar Jha
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal by-pass Road, Bhauri, Bhopal, Madhya Pradesh 462066, India
| | - Rahul Kadu
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal by-pass Road, Bhauri, Bhopal, Madhya Pradesh 462066, India
- MIT School of Engineering, MIT Art, Design and Technology University, Pune, Maharashtra 412201, India
| | - Sangit Kumar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal by-pass Road, Bhauri, Bhopal, Madhya Pradesh 462066, India
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2
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Gogesch FS, Bauer L, Vollstädt FD, Linseis M, Senft L, Ivanović-Burmazović I, Winter RF. Pyrene fluorescence in 2,7-di(4-phenylethynyl)pyrene-bridged bis(alkenylruthenium) complexes. Dalton Trans 2023; 53:251-259. [PMID: 38037827 DOI: 10.1039/d3dt03114d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
Complexes PyrDPE-RuCl and PyrDPE-Ruacac with a π-extended 2,7-di(4-phenylethynyl)pyrene linker undergo simultaneous one-electron oxidations of their {Ru}-styryl entities. The absence of an intervalence charge-transfer (IVCT) band at intermediate stages, where the mixed-valent, singly oxidized radical cation is present, and spin density confinement to the terminal styryl ruthenium site(s) are tokens of a lack of electronic coupling between the {Ru} entities across the π-conjugated linker. The close similarity of the linker-based π → π* bands in the complexes and the free ligand and their insensitivity towards oxidations at the terminal sites indicate that the central pyrenyl fluorophore is electronically decoupled from the electron-rich {Ru}-styryl termini. As a consequence, the complexes offer stable pyrene-based fluorescence emissions at 77 K, which are red-shifted from that of the linker.
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Affiliation(s)
- Franciska S Gogesch
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany.
| | - Lea Bauer
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany.
| | - Florian D Vollstädt
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany.
| | - Michael Linseis
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany.
| | - Laura Senft
- Fachbereich Chemie, Ludwig-Maximilian-Universität München, Butenandtstraße 5-13, Haus D, 81377 München, Germany
| | - Ivana Ivanović-Burmazović
- Fachbereich Chemie, Ludwig-Maximilian-Universität München, Butenandtstraße 5-13, Haus D, 81377 München, Germany
| | - Rainer F Winter
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany.
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3
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Gogesch F, Laininger LS, Sokov N, Schupp SM, Senft L, Moura HM, Linseis M, Schmidt-Mende L, Ivanović-Burmazović I, Unterlass MM, Winter RF. A Dibenzotetrathiafulvalene-Bridged Bis(alkenylruthenium) Complex and Its One- and Two-Electron-Oxidized Forms. Inorg Chem 2023; 62:18789-18803. [PMID: 37921553 PMCID: PMC10664072 DOI: 10.1021/acs.inorgchem.3c03184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 10/09/2023] [Accepted: 10/17/2023] [Indexed: 11/04/2023]
Abstract
We report on the synthesis of the new bis(alkenylruthenium) complex DBTTF-(ViRu)2 with a longitudinally extended, π-conjugated dibenzotetrathiafulvalene (DBTTF) bridge, characterized by multinuclear NMR, IR, and UV/vis spectroscopy, mass spectrometry, and single-crystal X-ray diffraction. Cyclic and square-wave voltammetry revealed that DBTTF-(ViRu)2 undergoes four consecutive oxidations. IR, UV/vis/near-IR, and electron paramagnetic resonance spectroscopy indicate that the first oxidation involves the redox-noninnocent DBTTF bridge, while the second oxidation is biased toward one of the peripheral styrylruthenium entities, thereby generating an electronically coupled mixed-valent state ({Ru}-CH═CH)•+-DBTTF•+-(CH═CH-{Ru}) [{Ru} = Ru(CO)Cl(PiPr3)2]. The latter is apparently in resonance with the ({Ru}-CH═CH)•+-DBTTF-(CH═CH-{Ru})•+ and ({Ru}-CH═CH)-DBTTF2+-(CH═CH-{Ru}) forms, which are calculated to lie within 19 kJ/mol. Higher oxidized forms proved too unstable for further characterization. The reaction of DBTTF-(ViRu)2 with the strong organic acceptors 2,3-dichloro-5,6-dicyano-1,4-benzoquinone, tetracyano-p-benzoquinodimethane (TCNQ), and F4TCNQ resulted in formation of the DBTTF-(ViRu)2•+ radical cation, as shown by various spectroscopic techniques. Solid samples of these compounds were found to be highly amorphous and electrically insulating.
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Affiliation(s)
- Franciska
S. Gogesch
- Fachbereich
Chemie Universität Konstanz Universitätsstraße 10, 78457 Kostanz, Germany
| | - Lukas S. Laininger
- Fachbereich
Chemie Universität Konstanz Universitätsstraße 10, 78457 Kostanz, Germany
| | - Nick Sokov
- Fachbereich
Chemie Universität Konstanz Universitätsstraße 10, 78457 Kostanz, Germany
| | - Stefan M. Schupp
- Universität
Konstanz Universitätsstraße
10, 78457 Konstanz, Germany
| | - Laura Senft
- Department
Chemie Ludwig-Maximilians-Universität
München Butenandstraße 5−13, Haus D, 81377 München, Germany
| | - Hipassia M. Moura
- Fachbereich
Chemie Universität Konstanz Universitätsstraße 10, 78457 Kostanz, Germany
| | - Michael Linseis
- Fachbereich
Chemie Universität Konstanz Universitätsstraße 10, 78457 Kostanz, Germany
| | | | - Ivana Ivanović-Burmazović
- Department
Chemie Ludwig-Maximilians-Universität
München Butenandstraße 5−13, Haus D, 81377 München, Germany
| | - Miriam M. Unterlass
- Fachbereich
Chemie Universität Konstanz Universitätsstraße 10, 78457 Kostanz, Germany
| | - Rainer F. Winter
- Fachbereich
Chemie Universität Konstanz Universitätsstraße 10, 78457 Kostanz, Germany
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4
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Das R, Linseis M, Scheerer S, Zoller K, Senft L, Ivanović-Burmazović I, Winter RF. Reversible Multielectron Release from Redox-Active Three-Dimensional Molecular Barrels with Ruthenium-Alkenyl Moieties. Inorg Chem 2022; 61:12662-12677. [PMID: 35917328 DOI: 10.1021/acs.inorgchem.2c01608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Three-dimensional molecular barrels Ru6-4 and Ru6-5 were synthesized in high yields from dinuclear ruthenium-vinyl clamps and tritopic triphenylamine-derived carboxylate linkers and characterized by multinuclear NMR spectroscopy including 1H-1H COSY and 1H DOSY measurements, high-resolution electrospray ionization mass spectrometry, and X-ray crystallography. The metal frameworks of the cages adopt the shape of twisted trigonal prisms, and they crystallize as racemic mixtures of interdigitating Δ- and Λ-enantiomers with a tight columnar packing in Ru6-4. Electrochemical studies and redox titrations revealed that the cages are able to release up to 11 electrons on the voltammetric timescale and that their cage structures persist up to the hexacation level. IR and UV-vis-near-infrared spectroelectrochemical studies confirm substituent-dependent intramolecular electronic communication within the π-conjugated 1,3-divinylphenylene backbone in the tricationic states, where all three divinylphenylene-bridged diruthenium clamps are present in mixed-valent radical cation states. The formation of 1:3 charge-transfer salts with 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane as the electron acceptor is also demonstrated.
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Affiliation(s)
- Rajorshi Das
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
| | - Michael Linseis
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
| | - Stefan Scheerer
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
| | - Katrin Zoller
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
| | - Laura Senft
- Department Chemie, Ludwig-Maximilians Universität München, Butenandtstraße 5-13, Haus D, 81377 München, Germany
| | - Ivana Ivanović-Burmazović
- Department Chemie, Ludwig-Maximilians Universität München, Butenandtstraße 5-13, Haus D, 81377 München, Germany
| | - Rainer F Winter
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
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5
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Das R, Linseis M, Schupp SM, Schmidt‐Mende L, Winter RF. Electron-Rich Diruthenium Complexes with π-Extended Alkenyl Ligands and Their F 4 TCNQ Charge-Transfer Salts. Chemistry 2022; 28:e202104403. [PMID: 35235235 PMCID: PMC9310581 DOI: 10.1002/chem.202104403] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Indexed: 11/07/2022]
Abstract
The synthesis of dinuclear ruthenium alkenyl complexes with {Ru(CO)(Pi Pr3 )2 (L)} entities (L=Cl- in complexes Ru2 -3 and Ru2 -7; L=acetylacetonate (acac- ) in complexes Ru2 -4 and Ru2 -8) and with π-conjugated 2,7-divinylphenanthrenediyl (Ru2 -3, Ru2 -4) or 5,8-divinylquinoxalinediyl (Ru2 -7, Ru2 -8) as bridging ligands are reported. The bridging ligands are laterally π-extended by anellating a pyrene (Ru2 -7, Ru2 -8) or a 6,7-benzoquinoxaline (Ru2 -3, Ru2 -4) π-perimeter. This was done with the hope that the open π-faces of the electron-rich complexes will foster association with planar electron acceptors via π-stacking. The dinuclear complexes were subjected to cyclic and square-wave voltammetry and were characterized in all accessible redox states by IR, UV/Vis/NIR and, where applicable, by EPR spectroscopy. These studies signified the one-electron oxidized forms of divinylphenylene-bridged complexes Ru2 -7, Ru2 -8 as intrinsically delocalized mixed-valent species, and those of complexes Ru2 -3 and Ru2 -4 with the longer divinylphenanthrenediyl linker as partially localized on the IR, yet delocalized on the EPR timescale. The more electron-rich acac- congeners formed non-conductive 1 : 1 charge-transfer (CT) salts on treatment with the F4 TCNQ electron acceptor. All spectroscopic techniques confirmed the presence of pairs of complex radical cations and F4 TCNQ.- radical anions in these CT salts, but produced no firm evidence for the relevance of π-stacking to their formation and properties.
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Affiliation(s)
- Rajorshi Das
- Fachbereich ChemieUniversität KonstanzUniversitätsstrasse 1078457KonstanzGermany
| | - Michael Linseis
- Fachbereich ChemieUniversität KonstanzUniversitätsstrasse 1078457KonstanzGermany
| | - Stefan M. Schupp
- Fachbereich PhysikUniversität KonstanzUniversitätsstrasse 1078457KonstanzGermany
| | - Lukas Schmidt‐Mende
- Fachbereich PhysikUniversität KonstanzUniversitätsstrasse 1078457KonstanzGermany
| | - Rainer F. Winter
- Fachbereich ChemieUniversität KonstanzUniversitätsstrasse 1078457KonstanzGermany
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6
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Sil A, Roy SS, Mishra VK, Islam SN, Mishra S, Patra SK. Modulation of Electrochemical and Spectroscopic Properties in Ru(II)‐Terpyridyl End‐Capped Homobimetallic Organometallic Complexes by Varying π‐Conjugated Organic Spacers. ChemistrySelect 2022. [DOI: 10.1002/slct.202200152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Amit Sil
- Department of Chemistry Indian Institute of Technology Kharagpur Kharagpur 721302 India
| | - Sourav Saha Roy
- Department of Chemistry Indian Institute of Technology Kharagpur Kharagpur 721302 India
| | - Vipin Kumar Mishra
- Department of Chemistry Indian Institute of Technology Kharagpur Kharagpur 721302 India
| | - Sk Najmul Islam
- Department of Chemistry Indian Institute of Technology Kharagpur Kharagpur 721302 India
| | - Sabyashachi Mishra
- Department of Chemistry Indian Institute of Technology Kharagpur Kharagpur 721302 India
- Centre for Computational and Data Sciences Indian Institute of Technology Kharagpur Kharagpur 721302 India
| | - Sanjib K. Patra
- Department of Chemistry Indian Institute of Technology Kharagpur Kharagpur 721302 India
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7
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Gottwald D, Geidel C, Rüffer T, Schaarschmidt D, Lang H. Heterodi-, -tri- and -tetrametallic Transition-Metal-Complexes. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2022.122350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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8
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Breimaier S, Fröhlich N, Herberger J, Linseis M, Kivala M, Winter RF. Charge and Spin Delocalization in Mixed-Valent Vinylruthenium–Triarylamine-Conjugates with Planarized Triarylamines. Organometallics 2022. [DOI: 10.1021/acs.organomet.1c00619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Stefanie Breimaier
- Department of Chemistry, University of Konstanz, Universitätsstraße 10, D-78457 Konstanz, Germany
| | - Nina Fröhlich
- Department of Chemistry and Pharmacy, Friedrich−Alexander-Universität Erlangen−Nürnberg, Nicolaus-Fiebiger-Straße 10, D-91058 Erlangen, Germany
| | - Jan Herberger
- Department of Chemistry, University of Konstanz, Universitätsstraße 10, D-78457 Konstanz, Germany
| | - Michael Linseis
- Department of Chemistry, University of Konstanz, Universitätsstraße 10, D-78457 Konstanz, Germany
| | - Milan Kivala
- Institute of Organic Chemistry, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
| | - Rainer F. Winter
- Department of Chemistry, University of Konstanz, Universitätsstraße 10, D-78457 Konstanz, Germany
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9
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Kovalski E, Schaarschmidt D, Hildebrandt A. Anthracene‐Containing Gold(I) Triphenylphosphine Acetylide: Synthesis and (Spectro)electrochemical Properties. ChemistrySelect 2021. [DOI: 10.1002/slct.202103899] [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)
- Eduard Kovalski
- Technische Universität Chemnitz Faculty of Natural Sciences Institute of Chemistry, Inorganic Chemistry, D- 09107 Chemnitz Germany
| | - Dieter Schaarschmidt
- Department of Chemistry University of Hamburg Martin Luther King Pl 6 20146 Hamburg Germany
| | - Alexander Hildebrandt
- Technische Universität Chemnitz Faculty of Natural Sciences Institute of Chemistry, Inorganic Chemistry, D- 09107 Chemnitz Germany
- Technische Universität Dresden Carl Gustav Carus Faculty of Medicine Department of Anesthesiology and Intensive Care Medicine Clinical Sensoring and Monitoring Fetscherstr. 74 D-01307 Dresden Germany
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10
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Qi J, Liu S, Seydimemet M, Wang X, Lu X. A General Set of DNA-Compatible Reactions for Preparing DNA-Tagged Multisubstituted Pyrroles. Bioconjug Chem 2021; 32:2290-2294. [PMID: 34699185 DOI: 10.1021/acs.bioconjchem.1c00427] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
DNA-encoded library (DEL) technology provided a powerful screening platform for identifying potential bioactive small molecules with high affinity to biologically interesting targets. Essential to a successful DEL campaign are the drug-like small molecular moieties of DNA-encoded libraries with expanded chemical space. Our laboratory has been working on developing and producing novel DNA-encoded libraries that complement current reported DELs. Herein, we demonstrated a general set of DNA-compatible reactions that enable the preparation of pyrrole-based DNA-encoded libraries in which the DNA tags are linked to the N position of the pyrrole central core. Further diversification could be rapidly incorporated into the pyrrole scaffold by robust iodination and Suzuki coupling reactions.
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Affiliation(s)
- Jingjing Qi
- School of Chinese Materia Medica, Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing 210023, China
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong, Shanghai, 201203, China
| | - Sixiu Liu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong, Shanghai, 201203, China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, China
| | - Mengnisa Seydimemet
- School of Chinese Materia Medica, Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing 210023, China
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong, Shanghai, 201203, China
| | - Xuan Wang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong, Shanghai, 201203, China
| | - Xiaojie Lu
- School of Chinese Materia Medica, Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing 210023, China
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong, Shanghai, 201203, China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, China
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11
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Rotthowe N, Linseis M, Vogelsang L, Orth N, Ivanović-Burmazović I, Winter RF. A "Pretender" Croconate-Bridged Macrocyclic Tetraruthenium Complex: Sizable Redox Potential Splittings despite Electronically Insulated Divinylphenylene Diruthenium Entities. Molecules 2021; 26:molecules26175232. [PMID: 34500666 PMCID: PMC8433806 DOI: 10.3390/molecules26175232] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 08/24/2021] [Accepted: 08/24/2021] [Indexed: 11/17/2022] Open
Abstract
Careful optimization of the reaction conditions provided access to the particularly small tetraruthenium macrocycle 2Ru2Ph-Croc, which is composed out of two redox-active divinylphenylene-bridged diruthenium entities {Ru}-1,4-CH=CH-C6H4-CH=CH-{Ru} (Ru2Ph; {Ru} = Ru(CO)Cl(PiPr3)2) and two likewise redox-active and potentially non-innocent croconate linkers. According to single X-ray diffraction analysis, the central cavity of 2Ru2Ph-Croc is shielded by the bulky PiPr3 ligands, which come into close contact. Cyclic voltammetry revealed two pairs of split anodic waves in the weakly ion pairing CH2Cl2/NBu4BArF24 (BArF24 = [B{C6H3(CF3)2-3,5}4]− electrolyte, while the third and fourth waves fall together in CH2Cl2/NBu4PF6. The various oxidized forms were electrogenerated and scrutinized by IR and UV/Vis/NIR spectroscopy. This allowed us to assign the individual oxidations to the metal-organic Ru2Ph entities within 2Ru2Ph-Croc, while the croconate ligands remain largely uninvolved. The lack of specific NIR bands that could be assigned to intervalence charge transfer (IVCT) in the mono- and trications indicates that these mixed-valent species are strictly charge-localized. 2Ru2Ph-Croc is hence an exemplary case, where stepwise IR band shifts and quite sizable redox splittings between consecutive one-electron oxidations would, on first sight, point to electronic coupling, but are exclusively due to electrostatic and inductive effects. This makes 2Ru2Ph-Croc a true “pretender”.
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Affiliation(s)
- Nils Rotthowe
- Fachbereich Chemie der Universität Konstanz, Universitätsstraße 31, 78464 Konstanz, Germany; (N.R.); (M.L.); (L.V.)
- Department of Chemistry, University of Southern California, LJS 251, 840 Downey Way, Los Angeles, CA 90089, USA
| | - Michael Linseis
- Fachbereich Chemie der Universität Konstanz, Universitätsstraße 31, 78464 Konstanz, Germany; (N.R.); (M.L.); (L.V.)
| | - Lars Vogelsang
- Fachbereich Chemie der Universität Konstanz, Universitätsstraße 31, 78464 Konstanz, Germany; (N.R.); (M.L.); (L.V.)
| | - Nicole Orth
- Department Chemie und Pharmazie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany; (N.O.); (I.I.-B.)
| | - Ivana Ivanović-Burmazović
- Department Chemie und Pharmazie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany; (N.O.); (I.I.-B.)
- Department Chemie, Ludwigs-Maximilians-Universität München, Butenandtstr. 5-13, Haus D, 81377 München, Germany
| | - Rainer F. Winter
- Fachbereich Chemie der Universität Konstanz, Universitätsstraße 31, 78464 Konstanz, Germany; (N.R.); (M.L.); (L.V.)
- Correspondence: ; Tel.: +49-(7531)-88-5355
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12
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Hildebrandt A, Kovalski E, Korb M. (Spectro)electrochemical Properties of Anthracene Containing Triarylamine Platinum(II) Acetylides. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100311] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Alexander Hildebrandt
- Technische Universität Dresden, Carl Gustav Carus Faculty of Medicine Department of Anesthesiology and Intensive Care Medicine Clinical Sensoring and Monitoring Fetscherstr. 74 01307 Dresden Germany
- Technische Universität Chemnitz Faculty of Natural Sciences, Institute of Chemistry, Inorganic Chemistry 09107 Chemnitz Germany
| | - Eduard Kovalski
- Technische Universität Chemnitz Faculty of Natural Sciences, Institute of Chemistry, Inorganic Chemistry 09107 Chemnitz Germany
| | - Marcus Korb
- Technische Universität Chemnitz Faculty of Natural Sciences, Institute of Chemistry, Inorganic Chemistry 09107 Chemnitz Germany
- The University of Western Australia Faculty of Science, School of Molecular Sciences Crawley Perth WA 6009 Australia
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13
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Wang H, Shao JY, Duan R, Wang KZ, Zhong YW. Synthesis and electronic coupling studies of cyclometalated diruthenium complexes bridged by 3,3',5,5'-tetrakis(benzimidazol-2-yl)-biphenyl. Dalton Trans 2021; 50:4219-4230. [PMID: 33687405 DOI: 10.1039/d1dt00263e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Three cyclometalated diruthenium complexes bridged by 3,3',5,5'-tetrakis(benzimidazol-2-yl)biphenyl (H-tbibp) and capped with different terminal ligands have been synthesized and examined. In addition, two monoruthenium complexes with H-tbibp have been prepared for the purpose of comparison studies. The degree of Ru-Ru electronic coupling of these diruthenium complexes has been investigated by electrochemical and intervalence charge-transfer (IVCT) analyses. These results suggest that when the same or similar terminal ligands are used, the strength of H-tbibp in mediating the Ru-Ru coupling is enhanced with respect to that of the previously reported bridging ligand 3,3',5,5'-tetrakis(N-methylbenzimidazol-2-yl)biphenyl, but it is slightly inferior to that of the classical bridging ligand 3,3',5,5'-tetrakis(pyrid-2-yl)biphenyl. This trend is also supported by CNS analyses based on the hole-superexchange mechanism. In addition, DFT calculations have been performed to probe the spin density distributions of the singly-oxidized diruthenium complexes with H-tbibp and TDDFT calculations are used to reproduce the IVCT transitions.
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Affiliation(s)
- Hao Wang
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, China.
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14
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Ou YP, Zhang J, Hu Y, Yin J, Chi C, Liu SH. Oxidized divinyl oligoacene-bridged diruthenium complexes: bridged localized radical characters and reduced aromaticity in bridge cores. Dalton Trans 2020; 49:16877-16886. [PMID: 33180078 DOI: 10.1039/d0dt02883e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A series of bimetallic ruthenium vinyl complexes 1-5 bridged by oligoacenes were synthesized and characterized in this study. Comparative cyclic voltammetry results from 1-5 indicated that the first oxidation potential decreased gradually with the extension of conjugate ligands. Upon oxidation to singly oxidized species 1+-5+, rather small ν(CO) changes in the infrared (IR) spectra and the characteristic bands of metal-to-ligand charge transfer absorptions in the near IR (NIR) region predicted via time-dependent DFT calculations suggested that strong bridged ligands participate in redox processes. NIR absorptions were not observed in complexes 4+ and 5+ possibly because of instability in their twisted and noncoplanar geometry. Electron paramagnetic resonance results and spin density distribution demonstrated that the bridged localized degrees of 1+-5+ successively increased with the extension of oligoacene from benzene to tetracene. Further comparative analysis of neutral molecules and monocations to the aromaticity and π-electron density of bridge cores indicated a step-by-step transformation process from an aromatic to quinoidal radical upon oxidation.
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Affiliation(s)
- Ya-Ping Ou
- Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, Key Laboratory of Functional Organometallic Materials of Hunan Province College, College of Chemistry and Material Science, Hengyang Normal University, Hengyang, Hunan 421008, P. R. China
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15
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Roy SS, Chowdhury SR, Mishra S, Patra SK. Role of Substituents at 3-position of Thienylethynyl Spacer on Electronic Properties in Diruthenium(II) Organometallic Wire-like Complexes. Chem Asian J 2020; 15:3304-3313. [PMID: 32790947 DOI: 10.1002/asia.202000755] [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: 06/29/2020] [Revised: 07/27/2020] [Indexed: 11/11/2022]
Abstract
A series of organometallic complexes [Cl(dppe)2 Ru-C≡C-(3-R-C4 H2 S)-C≡C-Ru(dppe)2 Cl] (3-R-C4 H2 S=3-substituted thienyl moiety; R=-H, -C2 H5 , -C3 H7 , -C4 H9 , -C6 H13 , -OMe, -CN in 5 a-5 g respectively) have been synthesized by systematic variation of 3-substituents at the thienylethynyl bridging unit. The diruthenum(II) wire-like complexes (5 a-5 g) have been achieved by the reaction of thienylethynyl bridging units, HC≡C-(3-R-C4 H2 S)-C≡CH (4 a-4 g) with cis-[Ru(dppe)2 Cl2 ]. The wire-like diruthenium(II) complexes undergo two consecutive electrochemical oxidation processes in the potential range of 0.0 - 0.8 V. Interestingly, the wave separation between the two redox waves is greatly influenced by the substituents at the 3-position of the thienylethynyl. Thus, the substitution on 3-position of the thienylethynyl bridging unit plays a pivotal role for tuning the electronic properties. To understand the electronic behavior, density functional theory (DFT) calculations of the selected diruthenium wire-like complexes (5 a-5 e) with different alkyl appendages are performed. The theoretical data demonstrate that incorporation of alkyl groups to the thienylethynyl entity leaves unsymmetrical spin densities, thus affecting the electronic properties. The voltammetric features of the other two Ru(II) alkynyl complexes 5 f and 5 g (with -OMe and -CN group respectively) show an apparent dependence on the electronic properties. The electronic properties in the redox conjugate, (5 a+ ) with Kc of 3.9×106 are further examined by UV-Vis-NIR and FTIR studies, showing optical responses in NIR region along with changes in "-Ru-C≡C-" vibrational stretching frequency. The origin of the observed electronic transition has been assigned based on time-dependent DFT (TDDFT) calculations.
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Affiliation(s)
- Sourav Saha Roy
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, 721302, WB, India
| | | | - Sabyashachi Mishra
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, 721302, WB, India
| | - Sanjib K Patra
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, 721302, WB, India
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16
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Fink D, Orth N, Linseis M, Ivanović‐Burmazović I, Winter RF. Structural Versatility and Supramolecular Isomerism in Redox‐Active Tetra‐ and Hexaruthenium Macrocycles. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000387] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Daniel Fink
- Fachbereich Chemie Universität Konstanz Universitätsstraße 10 78457 Konstanz Germany
| | - Nicole Orth
- Department Chemie und Pharmazie Friedrich‐Alexander‐Universität Erlangen‐Nürnberg Egerlandstraße 1 91058 Erlangen Germany
| | - Michael Linseis
- Fachbereich Chemie Universität Konstanz Universitätsstraße 10 78457 Konstanz Germany
| | - Ivana Ivanović‐Burmazović
- Department Chemie und Pharmazie Friedrich‐Alexander‐Universität Erlangen‐Nürnberg Egerlandstraße 1 91058 Erlangen Germany
| | - Rainer F. Winter
- Fachbereich Chemie Universität Konstanz Universitätsstraße 10 78457 Konstanz Germany
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17
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Fink D, Orth N, Ebel V, Gogesch FS, Staiger A, Linseis M, Ivanović-Burmazović I, Winter RF. Self-Assembled Redox-Active Tetraruthenium Macrocycles with Large Intracyclic Cavities. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00116] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Daniel Fink
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
| | - Nicole Orth
- Department Chemie und Pharmazie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany
| | - Viktoria Ebel
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
| | - Franciska S. Gogesch
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
| | - Anne Staiger
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
| | - Michael Linseis
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
| | - Ivana Ivanović-Burmazović
- Department Chemie und Pharmazie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany
| | - Rainer F. Winter
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
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18
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Fink D, Orth N, Linseis M, Ivanović-Burmazović I, Winter RF. Ring size matters: supramolecular isomerism in self-assembled redox-active tetra- and hexaruthenium macrocycles. Chem Commun (Camb) 2020; 56:1062-1065. [PMID: 31872198 DOI: 10.1039/c9cc09307a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Self-assembly of a divinylthiophene-bridged diruthenium complex with 2,5-furandicarboxylate leads to the formation of two macrocyclic structures that differ solely with regard to their respective nuclearities. Both supramolecular isomers were fully characterized and the conversion of the hexa- to the tetraruthenium macrocycle was followed by NMR monitoring.
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Affiliation(s)
- Daniel Fink
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany.
| | - Nicole Orth
- Department Chemie und Pharmazie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany
| | - Michael Linseis
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany.
| | - Ivana Ivanović-Burmazović
- Department Chemie und Pharmazie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany
| | - Rainer F Winter
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany.
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Ghazzy A, Taher D, Helal W, Korb M, Khalyfeh K, Awwadi FF, Al-Shewiki RK, Weheabby S, Al-Said N, Abu-Orabi ST, Lang H. Aryl ferrocenylmethylesters: Synthesis, solid-state structure and electrochemical investigations. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2018.12.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
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20
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Hassenrück C, Azarkh M, Drescher M, Linseis M, Demeshko S, Meyer F, Winter RF. Redox Isomeric Ferrocenyl Styrylruthenium Radical Cations with Diphenyl-Substituted β-Ketoenolato Ligands. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00714] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christopher Hassenrück
- Universität Konstanz, Fachbereich Chemie, Universitätsstraße 10, D-78457 Konstanz, Germany
| | - Mykhailo Azarkh
- Universität Konstanz, Fachbereich Chemie, Universitätsstraße 10, D-78457 Konstanz, Germany
| | - Malte Drescher
- Universität Konstanz, Fachbereich Chemie, Universitätsstraße 10, D-78457 Konstanz, Germany
| | - Michael Linseis
- Universität Konstanz, Fachbereich Chemie, Universitätsstraße 10, D-78457 Konstanz, Germany
| | - Serhiy Demeshko
- Georg-August-Universität Göttingen, Institut für Anorganische Chemie, Tammannstraße 4, D-37077 Göttingen, Germany
| | - Franc Meyer
- Georg-August-Universität Göttingen, Institut für Anorganische Chemie, Tammannstraße 4, D-37077 Göttingen, Germany
| | - Rainer F. Winter
- Universität Konstanz, Fachbereich Chemie, Universitätsstraße 10, D-78457 Konstanz, Germany
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21
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Rotthowe N, Zwicker J, Winter RF. Influence of Quinoidal Distortion on the Electronic Properties of Oxidized Divinylarylene-Bridged Diruthenium Complexes. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00318] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nils Rotthowe
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, D-78453 Konstanz, Germany
| | - Jakob Zwicker
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, D-78453 Konstanz, Germany
| | - Rainer F. Winter
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, D-78453 Konstanz, Germany
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22
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Hassenrück C, Mang A, Winter RF. Mixed-Valent Ruthenocene–Vinylruthenium Conjugates: Valence Delocalization Despite Chemically Different Redox Sites. Inorg Chem 2019; 58:2695-2707. [DOI: 10.1021/acs.inorgchem.8b03253] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christopher Hassenrück
- University of Konstanz, Department of Chemistry, Universitätsstraße 10, 78457 Konstanz, Germany
| | - André Mang
- University of Konstanz, Department of Chemistry, Universitätsstraße 10, 78457 Konstanz, Germany
| | - Rainer F. Winter
- University of Konstanz, Department of Chemistry, Universitätsstraße 10, 78457 Konstanz, Germany
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23
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Sil A, Ghosh U, Mishra VK, Mishra S, Patra SK. Synthesis, Structure, Electrochemical, and Spectroscopic Properties of Hetero-Bimetallic Ru(II)/Fe(II)-Alkynyl Organometallic Complexes. Inorg Chem 2019; 58:1155-1166. [PMID: 30614701 DOI: 10.1021/acs.inorgchem.8b02440] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Amit Sil
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721302, West Bengal, India
| | - Utsav Ghosh
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721302, West Bengal, India
| | - Vipin Kumar Mishra
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721302, West Bengal, India
| | - Sabyashachi Mishra
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721302, West Bengal, India
| | - Sanjib K. Patra
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721302, West Bengal, India
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24
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Speck JM, Korb M, Hildebrandt A, Lang H. Ferrocenyl‐Functionalized η
5
‐Thiophene Cr(CO)
3
Half‐Sandwich Compounds. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800749] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- J. Matthäus Speck
- Department of Inorganic Chemistry Faculty of Natural Sciences Technische Universität Chemnitz 09107 Chemnitz Germany
| | - Marcus Korb
- Department of Inorganic Chemistry Faculty of Natural Sciences Technische Universität Chemnitz 09107 Chemnitz Germany
| | - Alexander Hildebrandt
- Department of Inorganic Chemistry Faculty of Natural Sciences Technische Universität Chemnitz 09107 Chemnitz Germany
| | - Heinrich Lang
- Department of Inorganic Chemistry Faculty of Natural Sciences Technische Universität Chemnitz 09107 Chemnitz Germany
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25
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Schnaubelt L, Petzold H, Dmitrieva E, Rosenkranz M, Lang H. A solvent- and temperature-dependent intramolecular equilibrium of diamagnetic and paramagnetic states in Co complexes bearing triaryl amines. Dalton Trans 2018; 47:13180-13189. [PMID: 30178800 DOI: 10.1039/c8dt02538j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Complexes [Co(L)2](ClO4)2 (L = o-substituted 2-(pyridine-2-yl)-1,10-phenanthrolines 1a-c) containing three redox active centres (a Co2+ ion and two triaryl amine (Tara) units) have been synthesised. The order of oxidation steps in [Co(L)2](ClO4)2 (L = 1a-c) was determined using cyclic voltammetry and EPR/UV-vis-NIR spectroelectrochemistry. In acetonitrile solutions, at room temperature, the first oxidation is Co-centred followed by the Tara oxidation at more anodic potentials. The order of oxidation is inverted in solutions of the less polar solvent dichloromethane. The Co3+/2+-centred redox event leads to a spin transition between the paramagnetic high-spin (HS) Co2+ and the diamagnetic low-spin (LS) Co3+ state, which was proven using 1H NMR and EPR spectroscopy. After one-electron oxidation of [Co(L)2](ClO4)2, an equilibrium between the diamagnetic [Co3+(L)]3+ and paramagnetic [Co2+(L)(L+)]3+ state in [Co(L)2]3+ (L = 1a-c) was found. Cyclic voltammetry showed enhanced intermolecular electron transfer between the [Co2+(L)2]2+ and [Co3+(L)2]3+ redox states mediated by [Co2+(L)(L+)]3+. Variable temperature vis-NIR spectroscopy of in situ generated [Co(L)2]3+ revealed a temperature-dependent redox equilibrium between the [Co3+(L)2]3+ and the [Co2+(L+)(L)]3+ states (L = 1a-c). Magnetic coupling between the HS-Co2+ ion and the Tara+ radical in [HS-Co2+(L+)(L)]3+ (L = 1a,c) was deduced from broad and undetectable lines observed in the corresponding EPR spectra. Complete oxidation to [LS-Co3+(L+)2]5+ (L = 1a,c) leads to characteristic EPR spectra of Tara biradicals with non-interacting spins.
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Affiliation(s)
- Linda Schnaubelt
- Technische Universität Chemnitz, Faculty of Natural Sciences, Institute of Chemistry, Inorganic Chemistry, 09107 Chemnitz, Germany.
| | - Holm Petzold
- Technische Universität Chemnitz, Faculty of Natural Sciences, Institute of Chemistry, Inorganic Chemistry, 09107 Chemnitz, Germany.
| | - Evgenia Dmitrieva
- Center of Spectroelectrochemistry, Leibniz Institute for Solid State and Materials Research (IFW Dresden), Helmholtzstraße 20, 01069 Dresden, Germany
| | - Marco Rosenkranz
- Center of Spectroelectrochemistry, Leibniz Institute for Solid State and Materials Research (IFW Dresden), Helmholtzstraße 20, 01069 Dresden, Germany
| | - Heinrich Lang
- Technische Universität Chemnitz, Faculty of Natural Sciences, Institute of Chemistry, Inorganic Chemistry, 09107 Chemnitz, Germany.
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Abstract
We present four new tetraruthenium macrocycles built from two 1,4-divinylphenylene diruthenium and two isophthalic acid building blocks with peripheral, potentially mono- or tridentate donor functions attached to the isophthalic linkers. These macrocycles are characterized by multinuclear NMR spectroscopy, mass spectrometry and, in the case of the thioacetyl-appended complex 4, by X-ray crystallography. Cyclic and square wave voltammetry establish that the macrocycles can be oxidized in four consecutive redox steps that come as two pairs of two closely spaced one-electron waves. Spectroscopic changes observed during IR and UV/Vis/NIR spectroelectrochemical experiments (NIR = near infrared) show that the isophthalate linkers insulate the electroactive divinylphenylene diruthenium moieties against each other. The macrocycles exhibit nevertheless pronounced polyelectrochromism with highly intense absorptions in the Vis (2+/4+ states) and the NIR (2+ states) with extinction coefficients of up to >100,000 M−1·cm−1. The strong absorptivity enhancement with respect to the individual divinylphenylene diruthenium building blocks is attributed to conformational restrictions imposed by the macrocycle backbone. Moreover, the di- and tetracations of these macrocycles are paramagnetic as revealed by EPR spectroscopy.
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28
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Muck CS, Linseis M, Welte H, Weickert S, Drescher M, Winter RF. Electrochemical and Spectroscopic Studies on σ-Phenyl Ruthenium Complexes Ru(CO)Cl(C6H4R-4)(PiPr3)2. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00255] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christina S. Muck
- Fachbereich Chemie der Universität Konstanz, Universitätsstraße 10, D-78457 Konstanz, Germany
| | - Michael Linseis
- Fachbereich Chemie der Universität Konstanz, Universitätsstraße 10, D-78457 Konstanz, Germany
| | - Hannah Welte
- Fachbereich Chemie der Universität Konstanz, Universitätsstraße 10, D-78457 Konstanz, Germany
| | - Sabrina Weickert
- Fachbereich Chemie der Universität Konstanz, Universitätsstraße 10, D-78457 Konstanz, Germany
| | - Malte Drescher
- Fachbereich Chemie der Universität Konstanz, Universitätsstraße 10, D-78457 Konstanz, Germany
| | - Rainer F. Winter
- Fachbereich Chemie der Universität Konstanz, Universitätsstraße 10, D-78457 Konstanz, Germany
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Fink D, Linseis M, Winter RF. Constitutional Isomers of Macrocyclic Tetraruthenium Complexes with Vastly Different Spectroscopic and Electrochemical Properties. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00057] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniel Fink
- Fachbereich Chemie, Universität Konstanz, 78457 Konstanz, Germany
| | - Michael Linseis
- Fachbereich Chemie, Universität Konstanz, 78457 Konstanz, Germany
| | - Rainer F. Winter
- Fachbereich Chemie, Universität Konstanz, 78457 Konstanz, Germany
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30
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Kovalski E, Korb M, Hildebrandt A. Synthesis, Electrochemistry, and Optical Properties of Half‐Sandwich Ruthenium Complexes Bearing Triarylamine‐Anthracenes. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201701409] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Eduard Kovalski
- Technische Universität Chemnitz Fakultät für Naturwissenschaften Institut für Chemie Anorganische Chemie 09107 Chemnitz Germany
| | - Marcus Korb
- Technische Universität Chemnitz Fakultät für Naturwissenschaften Institut für Chemie Anorganische Chemie 09107 Chemnitz Germany
| | - Alexander Hildebrandt
- Technische Universität Chemnitz Fakultät für Naturwissenschaften Institut für Chemie Anorganische Chemie 09107 Chemnitz Germany
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31
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The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2016. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2017.09.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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32
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Müller K, Korb M, Koo C, Klingeler R, Miesel D, Hildebrandt A, Rüffer T, Lang H. Tri- (M = Cu II ) and hexanuclear (M = Ni II , Co II ) heterometallic coordination compounds with ferrocene monocarboxylate ligands: Solid-state structures and thermogravimetric, electrochemical and magnetic properties. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.09.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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33
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Liu W, Yan F, Qian S, Ye J, Liu X, Yu M, Wu X, Le M, Zhou Z, Liu S, Low PJ, Jin S. Electronic Structures of Divinylchalcogenophene‐Bridged Biruthenium Complexes: Exploring Trends from O to Te. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201701036] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Wen‐Xia Liu
- College of Chemistry Central China Normal University 430079 Wuhan Hubei China
| | - Feng Yan
- College of Chemistry Central China Normal University 430079 Wuhan Hubei China
| | - Shu‐Li Qian
- College of Chemistry Central China Normal University 430079 Wuhan Hubei China
| | - Jin‐Yu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces Department of Chemistry Xiamen University 361005 Xiamen Fujian China
| | - Xu Liu
- College of Chemistry Central China Normal University 430079 Wuhan Hubei China
| | - Ming‐Xia Yu
- College of Chemistry Central China Normal University 430079 Wuhan Hubei China
| | - Xiao‐Hui Wu
- College of Chemistry Central China Normal University 430079 Wuhan Hubei China
| | - Meng‐Lei Le
- College of Chemistry Central China Normal University 430079 Wuhan Hubei China
| | - Zhi‐You Zhou
- State Key Laboratory of Physical Chemistry of Solid Surfaces Department of Chemistry Xiamen University 361005 Xiamen Fujian China
| | - Sheng‐Hua Liu
- College of Chemistry Central China Normal University 430079 Wuhan Hubei China
| | - Paul J. Low
- School of Molecular Sciences University of Western Australia 35 Stirling Highway 6009 Crawley WA Australia
| | - Shan Jin
- College of Chemistry Central China Normal University 430079 Wuhan Hubei China
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35
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Hassenrück C, Winter RF. Manipulation and Assessment of Charge and Spin Delocalization in Mixed-Valent Triarylamine–Vinylruthenium Conjugates. Inorg Chem 2017; 56:13517-13529. [PMID: 29035518 DOI: 10.1021/acs.inorgchem.7b02186] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Rainer F. Winter
- University of Konstanz, Universitätsstraße 10, D-78457 Konstanz, Germany
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36
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Oßwald S, Breimaier S, Linseis M, Winter RF. Polyelectrochromic Vinyl Ruthenium-Modified Tritylium Dyes. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00194] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Steffen Oßwald
- Fachbereich Chemie der Universität Konstanz, Universitätsstraße 10, D-78457 Konstanz, Germany
| | - Stefanie Breimaier
- Fachbereich Chemie der Universität Konstanz, Universitätsstraße 10, D-78457 Konstanz, Germany
| | - Michael Linseis
- Fachbereich Chemie der Universität Konstanz, Universitätsstraße 10, D-78457 Konstanz, Germany
| | - Rainer F. Winter
- Fachbereich Chemie der Universität Konstanz, Universitätsstraße 10, D-78457 Konstanz, Germany
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Kowalski K, Szczupak Ł, Saloman S, Steverding D, Jabłoński A, Vrček V, Hildebrandt A, Lang H, Rybarczyk-Pirek A. Cymantrene, Cyrhetrene and Ferrocene Nucleobase Conjugates: Synthesis, Structure, Computational Study, Electrochemistry and Antitrypanosomal Activity. Chempluschem 2016; 82:303-314. [DOI: 10.1002/cplu.201600462] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Revised: 10/04/2016] [Indexed: 01/06/2023]
Affiliation(s)
- Konrad Kowalski
- Faculty of Chemistry; Department of Organic Chemistry; University of Łódź; Tamka 12 91403 Łódź Poland
| | - Łukasz Szczupak
- Faculty of Chemistry; Department of Organic Chemistry; University of Łódź; Tamka 12 91403 Łódź Poland
| | - Sebastian Saloman
- Technische Universität Chemnitz; Faculty of Natural Sciences; Institute of Chemistry; Inorganic Chemistry; 09107 Chemnitz Germany
| | - Dietmar Steverding
- Bob Champion Research & Education Building; Norwich Medical School; University of East Anglia; Norwich Research Park, Norwich NR4 7UQ United Kingdom
| | - Artur Jabłoński
- Faculty of Chemistry; Department of Organic Chemistry; University of Łódź; Tamka 12 91403 Łódź Poland
| | - Valerije Vrček
- Faculty of Pharmacy and Biochemistry; University of Zagreb; Ante Kovačića 1 10000 Zagreb Croatia
| | - Alexander Hildebrandt
- Technische Universität Chemnitz; Faculty of Natural Sciences; Institute of Chemistry; Inorganic Chemistry; 09107 Chemnitz Germany
| | - Heinrich Lang
- Technische Universität Chemnitz; Faculty of Natural Sciences; Institute of Chemistry; Inorganic Chemistry; 09107 Chemnitz Germany
| | - Agnieszka Rybarczyk-Pirek
- Faculty of Chemistry; Department of Theoretical and Structural Chemistry; University of Łódź; Pomorska 163/165 90236 Łódź Poland
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Gluyas JBG, Gückel S, Kaupp M, Low PJ. Rational Control of Conformational Distributions and Mixed-Valence Characteristics in Diruthenium Complexes. Chemistry 2016; 22:16138-16146. [DOI: 10.1002/chem.201603236] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Josef B. G. Gluyas
- School of Chemistry and Biochemistry; University of Western Australia; 35 Stirling Highway Crawley 6009 Australia
| | - Simon Gückel
- Institut für Chemie; Technische Universität Berlin, Sekr. C7; Strasse des 17. Juni 135 10623 Berlin Germany
| | - Martin Kaupp
- Institut für Chemie; Technische Universität Berlin, Sekr. C7; Strasse des 17. Juni 135 10623 Berlin Germany
| | - Paul J. Low
- School of Chemistry and Biochemistry; University of Western Australia; 35 Stirling Highway Crawley 6009 Australia
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Homo- and heterobimetallic 1,4-divinylphenylene- and naphthalene-1,8-divinyl-bridged diruthenium, diosmium and ruthenium osmium complexes. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2016.02.031] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Vincent KB, Gluyas JB, Gückel S, Zeng Q, Hartl F, Kaupp M, Low PJ. Tetrakis(ferrocenylethynyl)ethene: Synthesis, (Spectro)electrochemical and quantum chemical characterisation. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2016.04.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Scheerer S, Linseis M, Wuttke E, Weickert S, Drescher M, Tröppner O, Ivanović-Burmazović I, Irmler A, Pauly F, Winter RF. Redox-Active Tetraruthenium Macrocycles Built from 1,4-Divinylphenylene-Bridged Diruthenium Complexes. Chemistry 2016; 22:9574-90. [PMID: 27270860 DOI: 10.1002/chem.201601384] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Indexed: 11/09/2022]
Abstract
Metallamacrocylic tetraruthenium complexes were generated by treatment of 1,4-divinylphenylene-bridged diruthenium complexes with functionalized 1,3-benzene dicarboxylic acids and characterized by HR ESI-MS and multinuclear NMR spectroscopy. Every divinylphenylene diruthenium subunit is oxidized in two consecutive one-electron steps with half-wave potential splittings in the range of 250 to 330 mV. Additional, smaller redox-splittings between the +/2+ and 0/+ and the 3+/4+ and 2+/3+ redox processes, corresponding to the first and the second oxidations of every divinylphenylene diruthenium entity, are due to electrostatic effects. The lack of electronic coupling through bond or through space is explained by the nodal properties of the relevant molecular orbitals and the lateral side-by-side arrangement of the divinylphenylene linkers. The polyelectrochromic behavior of the divinylphenylene diruthenium precursors is retained and even amplified in these metallamacrocyclic structures. EPR studies down to T=4 K indicate that the dications 1-H(2+) and 1-OBu(2+) are paramagnetic. The dications and the tetracation of macrocycle 3-H display intense (dications) or weak (3-H(4+) ) EPR signals. Quantum chemical calculations indicate that the four most stable conformers of the macrocycles are largely devoid of strain. Bond parameters, energies as well as charge and spin density distributions of model macrocycle 5-H(Me) were calculated for the different charge and spin states.
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Affiliation(s)
- Stefan Scheerer
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457, Konstanz, Germany
| | - Michael Linseis
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457, Konstanz, Germany
| | - Evelyn Wuttke
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457, Konstanz, Germany.,Boehringer Ingelheim Pharma GmbH & CO. KG, Birkendorfer Straße 65, 88397, Biberach a. d. Riß, Germany
| | - Sabrina Weickert
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457, Konstanz, Germany
| | - Malte Drescher
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457, Konstanz, Germany
| | - Oliver Tröppner
- Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058, Erlangen, Germany
| | - Ivana Ivanović-Burmazović
- Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058, Erlangen, Germany
| | - Andreas Irmler
- Fachbereich Physik, Universität Konstanz, Universitätsstraße 10, 78457, Konstanz, Germany
| | - Fabian Pauly
- Fachbereich Physik, Universität Konstanz, Universitätsstraße 10, 78457, Konstanz, Germany.
| | - Rainer F Winter
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457, Konstanz, Germany.
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Fink D, Weibert B, Winter RF. Redox-active tetraruthenium metallacycles: reversible release of up to eight electrons resulting in strong electrochromism. Chem Commun (Camb) 2016; 52:6103-6. [DOI: 10.1039/c6cc00936k] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tetraruthenium macrocycles with 1,4-divinylphenylene and diarylamine-substituted isophthalic acids as the sides display up to eight one-electron redox steps and rich electrochromic behaviour with strong absorptions of the dications in the near infrared and of the tetra- and hexacations at low energies in the visible.
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Affiliation(s)
- Daniel Fink
- Fachbereich Chemie
- Universität Konstanz
- D-78453 Konstanz
- Germany
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