1
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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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2
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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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3
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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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4
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Ou YP, Yang X, Lin Z, Kong L, Liu SH. Binuclear Metal Ruthenium Complexes Bridged by Isomeric Bis(ethynyl)pyridine: Syntheses, Characterization and Electronic Coupling Properties. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2022.122491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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5
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Tetraruthenium Macrocycles with Laterally Extended Bis(alkenyl)quinoxaline Ligands and Their F4TCNQ•− Salts. INORGANICS 2022. [DOI: 10.3390/inorganics10060082] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
We report on the tetraruthenium macrocycles Ru4-5 and -6 with a π-conjugated pyrene-appended 5,8-divinylquinoxaline ligand and either isophthalate or thiophenyl-2,5-dicarboxylate linkers and their charge-transfer salts formed by oxidation with two equivalents of F4TCNQ. Both macrocyclic complexes were characterized by NMR spectroscopy, mass spectrometry, cyclic and square-wave voltammetry, and by IR, UV–vis–NIR, and EPR spectroscopy in their various oxidation states.
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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] [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 Chemie, Universität Konstanz, Universitätsstrasse 10, 78457, Konstanz, Germany
| | - Michael Linseis
- Fachbereich Chemie, Universität Konstanz, Universitätsstrasse 10, 78457, Konstanz, Germany
| | - Stefan M Schupp
- Fachbereich Physik, Universität Konstanz, Universitätsstrasse 10, 78457, Konstanz, Germany
| | - Lukas Schmidt-Mende
- 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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7
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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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8
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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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9
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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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10
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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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11
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Ou YAP, Hu Y, Xu M, Wang A, Liu SH. Rutheniumethynyl-triarylamine mixed-valence conjugated system: syntheses, (spectro-)electrochemistry, and theoretical calculations. J COORD CHEM 2019. [DOI: 10.1080/00958972.2019.1695125] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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, P.R. China
| | - Yuxuan Hu
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, P.R. China
| | - Meng Xu
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, P.R. China
| | - Aihui Wang
- 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, P.R. China
| | - Sheng Hua Liu
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, P.R. China
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12
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García‐Calvo J, Robson JA, Torroba T, Wilton‐Ely JDET. Synthesis and Application of Ruthenium(II) Alkenyl Complexes with Perylene Fluorophores for the Detection of Toxic Vapours and Gases. Chemistry 2019; 25:14214-14222. [DOI: 10.1002/chem.201903303] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Indexed: 12/18/2022]
Affiliation(s)
- José García‐Calvo
- Department of ChemistryFaculty of ScienceUniversity of Burgos 09001 Burgos Spain
| | - Jonathan A. Robson
- Department of ChemistryImperial College London, Molecular Sciences Research Hub, White City Campus London W12 0BZ UK
| | - Tomás Torroba
- Department of ChemistryFaculty of ScienceUniversity of Burgos 09001 Burgos Spain
| | - James D. E. T. Wilton‐Ely
- Department of ChemistryImperial College London, Molecular Sciences Research Hub, White City Campus London W12 0BZ UK
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13
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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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14
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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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15
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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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16
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17
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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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Ou YP, Zhang J, Zhang MX, Zhang F, Kuang D, Hartl F, Liu SH. Bonding and Electronic Properties of Linear Diethynyl Oligothienoacene-Bridged Diruthenium Complexes and Their Oxidized Forms. Inorg Chem 2017; 56:11074-11086. [DOI: 10.1021/acs.inorgchem.7b01433] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ya-Ping Ou
- Key Laboratory of Pesticide and Chemical Biology, Ministry
of Education, College of Chemistry, Central China Normal University (CCNU), Wuhan 430079, P. R. China
| | - Jing Zhang
- Key Laboratory of Pesticide and Chemical Biology, Ministry
of Education, College of Chemistry, Central China Normal University (CCNU), Wuhan 430079, P. R. China
| | - Ming-Xing Zhang
- Key Laboratory of Pesticide and Chemical Biology, Ministry
of Education, College of Chemistry, Central China Normal University (CCNU), Wuhan 430079, P. R. China
| | | | | | - František Hartl
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, U.K
| | - Sheng Hua Liu
- Key Laboratory of Pesticide and Chemical Biology, Ministry
of Education, College of Chemistry, Central China Normal University (CCNU), Wuhan 430079, P. R. China
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19
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Ou YP, Tang S, Wang A, Li J, Zhang F, Xu Z. Binuclear Ruthenium Complexes with Benzo[1,2-b;4,5-b′]dithiophene Analogues as Bridge Ligands: Syntheses, Characterization and Notable Difference on Electronic Coupling. CHINESE J CHEM 2017. [DOI: 10.1002/cjoc.201700220] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ya-Ping Ou
- College of Chemistry and Material Science; Hengyang Normal University; Key Laboratory of Functional Organometallic Materials of Hengyang Normal University, College of Hunan Province; Hengyang Hunan 421008 China
| | - Shunlin Tang
- College of Chemistry and Material Science; Hengyang Normal University; Key Laboratory of Functional Organometallic Materials of Hengyang Normal University, College of Hunan Province; Hengyang Hunan 421008 China
| | - Aihui Wang
- College of Chemistry and Material Science; Hengyang Normal University; Key Laboratory of Functional Organometallic Materials of Hengyang Normal University, College of Hunan Province; Hengyang Hunan 421008 China
| | - Junhua Li
- College of Chemistry and Material Science; Hengyang Normal University; Key Laboratory of Functional Organometallic Materials of Hengyang Normal University, College of Hunan Province; Hengyang Hunan 421008 China
| | - Fuxing Zhang
- College of Chemistry and Material Science; Hengyang Normal University; Key Laboratory of Functional Organometallic Materials of Hengyang Normal University, College of Hunan Province; Hengyang Hunan 421008 China
| | - Zhifeng Xu
- College of Chemistry and Material Science; Hengyang Normal University; Key Laboratory of Functional Organometallic Materials of Hengyang Normal University, College of Hunan Province; Hengyang Hunan 421008 China
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20
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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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21
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Toscani A, Jantan KA, Hena JB, Robson JA, Parmenter EJ, Fiorini V, White AJP, Stagni S, Wilton-Ely JDET. The stepwise generation of multimetallic complexes based on a vinylbipyridine linkage and their photophysical properties. Dalton Trans 2017; 46:5558-5570. [PMID: 27872923 DOI: 10.1039/c6dt03810g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The versatile rhenium complex [ReCl(CO)3(bpyC[triple bond, length as m-dash]CH)] (HC[triple bond, length as m-dash]Cbpy = 5-ethynyl-2,2'-bipyridine) is used to generate a series of bimetallic complexes through the hydrometallation of [MHCl(CO)(BTD)(PPh3)2] (M = Ru, Os; BTD = 2,1,3-benzothiadiazole). The ruthenium complex [Ru{CH[double bond, length as m-dash]CH-bpyReCl(CO)3}Cl(BTD)(CO)(PPh3)2] was characterised structurally. Ligand exchange reactions with bifunctional linkers bearing oxygen and sulfur donors provide access to tetra- and pentametallic complexes such as [{M{CH[double bond, length as m-dash]CH-bpyReCl(CO)3}(CO)(PPh3)2}2(S2CNC4H8NCS2)] and Fe[C5H4CO2M{CH[double bond, length as m-dash]CH-bpyReCl(CO)3}(CO)(PPh3)2]2. The effect of the group 8 metal on the photophysical properties of the rhenium centre was investigated using the complexes [Ru{CH[double bond, length as m-dash]CH-bpyReCl(CO)3}Cl(BTD)(CO)(PPh3)2] and [M{CH[double bond, length as m-dash]CH-bpyReCl(CO)3}{S2P(OEt)2}(CO)(PPh3)2] (M = Ru, Os). This revealed the quenching of the rhenium-based emission in favour of weak radiative processes based on the Ru and Os centres. The potential for exploiting this effect is illustrated by the reaction of [Ru{CH[double bond, length as m-dash]CH-bpyReCl(CO)3}Cl(CO)(BTD)(PPh3)2] with carbon monoxide, which results in a 5-fold fluorescence enhancement in the dicarbonyl product, [Ru{CH[double bond, length as m-dash]CH-bpyReCl(CO)3}Cl(CO)2(PPh3)2], as the quenching effect is disrupted.
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Affiliation(s)
- Anita Toscani
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, UK.
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22
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Zhang J, Guo SZ, Dong YB, Rao L, Yin J, Yu GA, Hartl F, Liu SH. Multistep Oxidation of Diethynyl Oligophenylamine-Bridged Diruthenium and Diiron Complexes. Inorg Chem 2017; 56:1001-1015. [PMID: 28045545 DOI: 10.1021/acs.inorgchem.6b02809] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Homo-dinuclear nonlinear complexes [{M(dppe)Cp*}2{μ-(-C≡C)2X}] (dppe = 1,2-bis(diphenylphosphino)ethane; Cp* = η5-C5Me5; X = triphenylamine (TPA), M = Ru (1a) and Fe (1b); X = N,N,N',N'-tetraphenylphenylene-1,4-diamine (TPPD), M = Ru (2a)) were prepared and characterized by 1H, 13C, and 31P NMR spectroscopy and single-crystal X-ray diffraction (1a, 2a). Attempts to prepare the diiron analogue of 2a were not successful. Experimental data obtained from cyclic voltammetry, square wave voltammetry, UV-vis-NIR (NIR = near-infrared) spectro-electrochemistry, and very informative IR spectro-electrochemistry in the C≡C stretching region, combined with density functional theory calculations, afford to make an emphasizing assessment of the close association between the metal-ethynyl termini and the oligophenylamine bridge core as well as their respective involvement in sequential one-electron oxidations of these complexes. The anodic behavior of the homo-bimetallic complexes depends strongly both on the metal center and the length of the oligophenylamine bridge core. The poorly separated first two oxidations of diiron complex 1b are localized on the electronically nearly independent Fe termini. In contrast, diruthenium complex 1a exhibits a significantly delocalized character and a marked electronic communication between the ruthenium centers through the diethynyl-TPA bridge. The ruthenium-ethynyl halves in 2a, separated by the doubly extended and more flexible TPPD bridge core, show a lower degree of electronic coupling, resulting in close-lying first two anodic waves and the NIR electronic absorption of [2a]+ with an indistinctive intervalence charge transfer character. Finally, the third anodic waves in the voltammetric responses of the homo-bimetallic complexes are associated with the concurrent exclusive oxidation of the TPA or TPPD bridge cores.
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Affiliation(s)
- Jing Zhang
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University , Wuhan 430079, P. R. China
| | - Shen-Zhen Guo
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University , Wuhan 430079, P. R. China
| | - Yu-Bao Dong
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University , Wuhan 430079, P. R. China
| | - Li Rao
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University , Wuhan 430079, P. R. China
| | - Jun Yin
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University , Wuhan 430079, P. R. China
| | - Guang-Ao Yu
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University , Wuhan 430079, P. R. China
| | - František Hartl
- Department of Chemistry, University of Reading , Whiteknights, Reading RG6 6AD, U.K
| | - Sheng Hua Liu
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University , Wuhan 430079, P. R. China
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23
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Robson JA, Gonzàlez de Rivera F, Jantan KA, Wenzel MN, White AJP, Rossell O, Wilton-Ely JDET. Bifunctional Chalcogen Linkers for the Stepwise Generation of Multimetallic Assemblies and Functionalized Nanoparticles. Inorg Chem 2016; 55:12982-12996. [DOI: 10.1021/acs.inorgchem.6b02409] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Jonathan A. Robson
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Ferran Gonzàlez de Rivera
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
- Departament de Química Inorgànica, Universitat de Barcelona, Martí Franquès 1-11, 08028 Barcelona, Spain
| | - Khairil A. Jantan
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Margot N. Wenzel
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Andrew J. P. White
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Oriol Rossell
- Departament de Química Inorgànica, Universitat de Barcelona, Martí Franquès 1-11, 08028 Barcelona, Spain
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24
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Oxidized Styrylruthenium–Ferrocene Conjugates: From Valence Localization to Valence Tautomerism. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600776] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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25
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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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26
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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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27
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Pfaff U, Hildebrandt A, Korb M, Oßwald S, Linseis M, Schreiter K, Spange S, Winter RF, Lang H. Electronically Strongly Coupled Divinylheterocyclic-Bridged Diruthenium Complexes. Chemistry 2016; 22:783-801. [PMID: 26660031 DOI: 10.1002/chem.201503687] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Indexed: 11/12/2022]
Abstract
Complexes [{Ru(CO)Cl(PiPr3 )2 }2 (μ-2,5-(CH-CH)2 -(c) C4 H2 E] (E=NR; R=C6 H4 -4-NMe2 (10 a), C6 H4 -4-OMe (10 b), C6 H4 -4-Me (10 c), C6 H5 (10 d), C6 H4 -4-CO2 Et (10 e), C6 H4 -4-NO2 (10 f), C6 H3 -3,5-(CF3 )2 (10 g), CH3 (11); E=O (12), S (13)) are discussed. The solid state structures of four alkynes and two complexes are reported. (Spectro)electrochemical studies show a moderate influence of the nature of the heteroatom and the electron-donating or -withdrawing substituents R in 10 a-g on the electrochemical and spectroscopic properties. The CVs display two consecutive one-electron redox events with ΔE°'=350-495 mV. A linear relationship between ΔE°' and the σp Hammett constant for 10 a-f was found. IR, UV/Vis/NIR and EPR studies for 10(+) -13(+) confirm full charge delocalization over the {Ru}CH-CH-heterocycle-CH-CH{Ru} backbone, classifying them as Class III systems according to the Robin and Day classification. DFT-optimized structures of the neutral complexes agree well with the experimental ones and provide insight into the structural consequences of stepwise oxidations.
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Affiliation(s)
- Ulrike Pfaff
- Faculty of Natural Sciences, Institute of Chemistry, Inorganic Chemistry, Technische Universität Chemnitz, 09107 Chemnitz (Germany)
| | - Alexander Hildebrandt
- Faculty of Natural Sciences, Institute of Chemistry, Inorganic Chemistry, Technische Universität Chemnitz, 09107 Chemnitz (Germany)
| | - Marcus Korb
- Faculty of Natural Sciences, Institute of Chemistry, Inorganic Chemistry, Technische Universität Chemnitz, 09107 Chemnitz (Germany)
| | - Steffen Oßwald
- Faculty of Chemistry, Universität Konstanz, 78457 Konstanz (Germany)
| | - Michael Linseis
- Faculty of Chemistry, Universität Konstanz, 78457 Konstanz (Germany)
| | - Katja Schreiter
- Faculty of Natural Sciences, Institute of Chemistry, Polymer Chemistry, Technische Universität Chemnitz, 09107 Chemnitz (Germany)
| | - Stefan Spange
- Faculty of Natural Sciences, Institute of Chemistry, Polymer Chemistry, Technische Universität Chemnitz, 09107 Chemnitz (Germany)
| | - Rainer F Winter
- Faculty of Chemistry, Universität Konstanz, 78457 Konstanz (Germany).
| | - Heinrich Lang
- Faculty of Natural Sciences, Institute of Chemistry, Inorganic Chemistry, Technische Universität Chemnitz, 09107 Chemnitz (Germany).
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28
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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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29
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Schauer PA, Skelton BW, Koutsantonis GA. Coordinating Tectons 4: Coordination Chemistry of the 4,5-Diazafluoren-9-yl Moiety as a Metallo-Ligand for Allenylidene Complexes. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00569] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Phil A. Schauer
- School of Chemistry and Biochemistry,
M313, University of Western Australia, Crawley, Western Australia, 6009, Australia
| | - Brian W. Skelton
- School of Chemistry and Biochemistry,
M313, University of Western Australia, Crawley, Western Australia, 6009, Australia
| | - George A. Koutsantonis
- School of Chemistry and Biochemistry,
M313, University of Western Australia, Crawley, Western Australia, 6009, Australia
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