1
|
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.
Collapse
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
| |
Collapse
|
2
|
Abrahams BF, Elliott RW, Hudson TA, Robson R, Sutton AL. X4TCNQ2− dianions: versatile building blocks for supramolecular systems. CrystEngComm 2018. [DOI: 10.1039/c8ce00413g] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new synthetic approach has led to the incorporation of TCNQ and F4TCNQ dianions into a wide variety of structures.
Collapse
Affiliation(s)
| | | | | | - Richard Robson
- School of Chemistry
- University of Melbourne
- Parkville
- Australia
| | | |
Collapse
|
3
|
Kamatchi TS, Mondal S, Scherer T, Bubrin M, Natarajan K, Kaim W. Near-Infrared-Absorbing Organometallic Diruthenium Complex Intermediates: Evidence for Bridging Anthrasemiquinone Formation and against Mixed Valency. Chemistry 2017; 23:17810-17816. [DOI: 10.1002/chem.201703888] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Indexed: 11/08/2022]
Affiliation(s)
| | - Sudipta Mondal
- Institut für Anorganische Chemie; Universität Stuttgart; Pfaffenwaldring 55 70550 Stuttgart Germany
| | - Thomas Scherer
- Institut für Anorganische Chemie; Universität Stuttgart; Pfaffenwaldring 55 70550 Stuttgart Germany
| | - Martina Bubrin
- Institut für Anorganische Chemie; Universität Stuttgart; Pfaffenwaldring 55 70550 Stuttgart Germany
| | | | - Wolfgang Kaim
- Institut für Anorganische Chemie; Universität Stuttgart; Pfaffenwaldring 55 70550 Stuttgart Germany
| |
Collapse
|
4
|
Haworth NL, Lu J, Vo N, Le TH, Thompson CD, Bond AM, Martin LL. Diagnosis of the Redox Levels of TCNQF4Compounds Using Vibrational Spectroscopy. Chempluschem 2014. [DOI: 10.1002/cplu.201402013] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
5
|
Le TH, Nafady A, Vo NT, Elliott RW, Hudson TA, Robson R, Abrahams BF, Martin LL, Bond AM. Electrochemically Directed Synthesis of Cu2I(TCNQF4II–)(MeCN)2 (TCNQF4 = 2,3,5,6-Tetrafluoro-7,7,8,8-tetracyanoquinodimethane): Voltammetry, Simulations, Bulk Electrolysis, Spectroscopy, Photoactivity, and X-ray Crystal Structure of the Cu2I(TCNQF4II–)(EtCN)2 Analogue. Inorg Chem 2014; 53:3230-42. [PMID: 24568268 DOI: 10.1021/ic500225v] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Thanh H. Le
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Ayman Nafady
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Nguyen T. Vo
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Robert W. Elliott
- School of Chemistry, The University of Melbourne, Parkville, 3001, Victoria, Australia
| | - Timothy A. Hudson
- School of Chemistry, The University of Melbourne, Parkville, 3001, Victoria, Australia
| | - Richard Robson
- School of Chemistry, The University of Melbourne, Parkville, 3001, Victoria, Australia
| | - Brendan F. Abrahams
- School of Chemistry, The University of Melbourne, Parkville, 3001, Victoria, Australia
| | - Lisandra L. Martin
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Alan M. Bond
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| |
Collapse
|
6
|
Jana R, Schwederski B, Fiedler J, Kaim W. Reprint of “Facilitated reduction and oxidation of {[Ru(NH3)5]4(μ4-TCNX)}8+ by changing from TCNX=TCNQ to TCNQF4”. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.02.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
7
|
Identification of TCNQF4 redox levels using spectroscopic and electrochemical fingerprints (TCNQF4=2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane). Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2012.10.019] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
8
|
Jana R, Schwederski B, Fiedler J, Kaim W. Facilitated reduction and oxidation of {[Ru(NH3)5]4(μ4-TCNX)}8+ by changing from TCNX=TCNQ to TCNQF4. Polyhedron 2012. [DOI: 10.1016/j.poly.2012.06.066] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
9
|
Drozdz A, Bubrin M, Fiedler J, Záliš S, Kaim W. (α-Diimine)tricarbonylhalorhenium complexes: the oxidation side. Dalton Trans 2012; 41:1013-9. [DOI: 10.1039/c1dt11449b] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
10
|
Le TH, Nafady A, Qu X, Martin LL, Bond AM. Detailed Electrochemical Analysis of the Redox Chemistry of Tetrafluorotetracyanoquinodimethane TCNQF4, the Radical Anion [TCNQF4]•–, and the Dianion [TCNQF4]2– in the Presence of Trifluoroacetic Acid. Anal Chem 2011; 83:6731-7. [PMID: 21726078 DOI: 10.1021/ac201373d] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Thanh Hai Le
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | | | | | | | | |
Collapse
|
11
|
Nawn G, Waldie KM, Oakley SR, Peters BD, Mandel D, Patrick BO, McDonald R, Hicks RG. Redox-active bridging ligands based on indigo diimine ("Nindigo") derivatives. Inorg Chem 2011; 50:9826-37. [PMID: 21688798 DOI: 10.1021/ic200388y] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Reactions of indigo with a variety of substituted anilines produce the corresponding indigo diimines ("Nindigos") in good yields. Nindigo coordination complexes are subsequently prepared by reactions of the Nindigo ligands with Pd(hfac)(2). In most cases, binuclear complexes are obtained in which the deprotonated Nindigo bridges two Pd(hfac) moieties in the expected bis-bidentate binding mode. When the Nindigo possesses bulky substituents on the imine (mesityl, 2,6-dimethylphenyl, 2,6-diisopropylphenyl, etc.), mononuclear Pf(hfac) complexes are obtained in which the Nindigo core has isomerized from a trans- to a cis-alkene; in these structures, the palladium is bound to the cis-Nindigo ligand at the two indole nitrogen atoms; the remaining proton is bound between the imine nitrogen atoms. The palladium complexes possess intense electronic absorption bands [near 920 nm for the binuclear complexes and 820 nm for the mononuclear cis-Nindigo complexes; extinction coefficients are (1.0-2.0) × 10(4) M(-1) cm(-1)] that are ligand-centered (π-π*) transitions. Cyclic voltammetry investigations reveal multiple redox events that are also ligand-centered in origin. All of the palladium complexes can be reversibly oxidized in two sequential one-electron steps; the binuclear complexes are reduced in a two-electron process whose reversibility depends on the Nindigo ligand substituent; the mononuclear palladium species show two one-electron reductions, only the first of which is quasi-reversible.
Collapse
Affiliation(s)
- Graeme Nawn
- Department of Chemistry, University of Victoria, P.O. Box 3065 STN CSC, Victoria, British Columbia V8W 3V6, Canada
| | | | | | | | | | | | | | | |
Collapse
|
12
|
Olivier C, Costuas K, Choua S, Maurel V, Turek P, Saillard JY, Touchard D, Rigaut S. “Chain-Like” Trimetallic Ruthenium Complexes with C7 Carbon-Rich Bridges: Experimental and Theoretical Investigations of Electronic Communication Tuning in Five Distinct Oxidation States. J Am Chem Soc 2010; 132:5638-51. [DOI: 10.1021/ja908948g] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Céline Olivier
- UMR 6226 CNRS−Université de Rennes 1, Sciences Chimiques de Rennes, Campus de Beaulieu, F-35042 Rennes Cedex, France, and UMR 7177 CNRS−Université de Strasbourg, Institut de Chimie, 1 rue Blaise Pascal, BP 296 R8, F-67008 Strasbourg Cedex, France
| | - Karine Costuas
- UMR 6226 CNRS−Université de Rennes 1, Sciences Chimiques de Rennes, Campus de Beaulieu, F-35042 Rennes Cedex, France, and UMR 7177 CNRS−Université de Strasbourg, Institut de Chimie, 1 rue Blaise Pascal, BP 296 R8, F-67008 Strasbourg Cedex, France
| | - Sylvie Choua
- UMR 6226 CNRS−Université de Rennes 1, Sciences Chimiques de Rennes, Campus de Beaulieu, F-35042 Rennes Cedex, France, and UMR 7177 CNRS−Université de Strasbourg, Institut de Chimie, 1 rue Blaise Pascal, BP 296 R8, F-67008 Strasbourg Cedex, France
| | - Vincent Maurel
- UMR 6226 CNRS−Université de Rennes 1, Sciences Chimiques de Rennes, Campus de Beaulieu, F-35042 Rennes Cedex, France, and UMR 7177 CNRS−Université de Strasbourg, Institut de Chimie, 1 rue Blaise Pascal, BP 296 R8, F-67008 Strasbourg Cedex, France
| | - Philippe Turek
- UMR 6226 CNRS−Université de Rennes 1, Sciences Chimiques de Rennes, Campus de Beaulieu, F-35042 Rennes Cedex, France, and UMR 7177 CNRS−Université de Strasbourg, Institut de Chimie, 1 rue Blaise Pascal, BP 296 R8, F-67008 Strasbourg Cedex, France
| | - Jean-Yves Saillard
- UMR 6226 CNRS−Université de Rennes 1, Sciences Chimiques de Rennes, Campus de Beaulieu, F-35042 Rennes Cedex, France, and UMR 7177 CNRS−Université de Strasbourg, Institut de Chimie, 1 rue Blaise Pascal, BP 296 R8, F-67008 Strasbourg Cedex, France
| | - Daniel Touchard
- UMR 6226 CNRS−Université de Rennes 1, Sciences Chimiques de Rennes, Campus de Beaulieu, F-35042 Rennes Cedex, France, and UMR 7177 CNRS−Université de Strasbourg, Institut de Chimie, 1 rue Blaise Pascal, BP 296 R8, F-67008 Strasbourg Cedex, France
| | - Stéphane Rigaut
- UMR 6226 CNRS−Université de Rennes 1, Sciences Chimiques de Rennes, Campus de Beaulieu, F-35042 Rennes Cedex, France, and UMR 7177 CNRS−Université de Strasbourg, Institut de Chimie, 1 rue Blaise Pascal, BP 296 R8, F-67008 Strasbourg Cedex, France
| |
Collapse
|