1
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Becker S. Understanding Cooperativity in Homo- and Heterometallic Complexes: From Basic Concepts to Design. Chempluschem 2024; 89:e202300619. [PMID: 38317458 DOI: 10.1002/cplu.202300619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Revised: 12/12/2023] [Accepted: 02/05/2024] [Indexed: 02/07/2024]
Abstract
Cooperative effects have attracted considerable attention in recent years. These effects are ubiquitous in chemistry and biology and can govern interactions of proteins with other biomolecules, mechanisms of supramolecular recognition and polymerization, catalysis, assembly of compounds on surfaces, and physical properties such as magnetic, electronic or optical properties, e. g. Consequently, the understanding of cooperative effects can lead to a structure-property relation that can pave the way to future applications in various research areas; however, with regard to cooperative effects in homo- and heterometallic complexes, we still are at the beginning of understanding. Nevertheless, concepts to describe cooperativity of metal centers as well as methodologies to investigate and model these effects have emerged over the last years. This concept article gives an overview of these existing concepts, approaches, and strategies to understand cooperative effects in homo- and heterometallic complexes. Special emphasis is put on concepts to define cooperative effects, their quantification, as well as methods to investigate cooperative effects.
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Affiliation(s)
- Sabine Becker
- Fachbereich Chemie, RPTU Kaiserslautern-Landau, Erwin-Schroedinger-Str. 54, 67663, Kaiserslautern, Germany
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2
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Bens T, Kübler JA, Walter RRM, Beerhues J, Wenger OS, Sarkar B. Impact of Bidentate Pyridyl-Mesoionic Carbene Ligands: Structural, (Spectro)Electrochemical, Photophysical, and Theoretical Investigations on Ruthenium(II) Complexes. ACS ORGANIC & INORGANIC AU 2023; 3:184-198. [PMID: 37545659 PMCID: PMC10401885 DOI: 10.1021/acsorginorgau.3c00005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 04/19/2023] [Accepted: 04/19/2023] [Indexed: 08/08/2023]
Abstract
We present here new synthetic strategies for the isolation of a series of Ru(II) complexes with pyridyl-mesoionic carbene ligands (MIC) of the 1,2,3-triazole-5-ylidene type, in which the bpy ligands (bpy = 2,2'-bipyridine) of the archetypical [Ru(bpy)3]2+ have been successively replaced by one, two, or three pyridyl-MIC ligands. Three new complexes have been isolated and investigated via NMR spectroscopy and single-crystal X-ray diffraction analysis. The incorporation of one MIC unit shifts the potential of the metal-centered oxidation about 160 mV to more cathodic potential in cyclic voltammetry, demonstrating the extraordinary σ-donor ability of the pyridyl-MIC ligand, while the π-acceptor capacities are dominated by the bpy ligand, as indicated by electron paramagnetic resonance spectroelectrochemistry (EPR-SEC). The replacement of all bpy ligands by the pyridyl-MIC ligand results in an anoidic shift of the ligand-centered reduction by 390 mV compared to the well-established [Ru(bpy)3]2+ complex. In addition, UV/vis/NIR-SEC in combination with theoretical calculations provided detailed insights into the electronic structures of the respective redox states, taking into account the total number of pyridyl-MIC ligands incorporated in the Ru(II) complexes. The luminescence quantum yield and lifetimes were determined by time-resolved absorption and emission spectroscopy. An estimation of the excited state redox potentials conclusively showed that the pyridyl-MIC ligand can tune the photoredox activity of the isolated complexes to stronger photoreductants. These observations can provide new strategies for the design of photocatalysts and photosensitizers based on MICs.
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Affiliation(s)
- Tobias Bens
- Institut
für Anorganische Chemie, Universität
Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
- Institut
für Chemie und Biochemie, Freie Universität
Berlin, Fabeckstraße
34-36, 14195 Berlin, Germany
| | - Jasmin A. Kübler
- Department
of Chemistry, University of Basel, 4056 Basel, Switzerland
| | - Robert R. M. Walter
- Institut
für Anorganische Chemie, Universität
Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Julia Beerhues
- Institut
für Anorganische Chemie, Universität
Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
- Institut
für Chemie und Biochemie, Freie Universität
Berlin, Fabeckstraße
34-36, 14195 Berlin, Germany
| | - Oliver S. Wenger
- Department
of Chemistry, University of Basel, 4056 Basel, Switzerland
| | - Biprajit Sarkar
- Institut
für Anorganische Chemie, Universität
Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
- Institut
für Chemie und Biochemie, Freie Universität
Berlin, Fabeckstraße
34-36, 14195 Berlin, Germany
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3
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Jakopec S, Gourdon-Grünewaldt L, Čipor I, Meščić Macan A, Perić B, Piantanida I, Cariou K, Gasser G, Kirin SI, Raić-Malić S. Synthesis, characterisation and biological evaluation of monometallic Re(I) and heterobimetallic Re(I)/Fe(II) complexes with a 1,2,3-triazolyl pyridine chelating moiety. Dalton Trans 2023. [PMID: 37366535 DOI: 10.1039/d3dt01070h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
Bioorganometallic complexes have attracted considerable interest and have shown promise for potential application in the treatment and diagnosis of cancer, as well as bioimaging agents, some acting as theranostic agents. The series of novel ferrocene, benzimidazo[1,2-a]quinoline and fluorescein derivatives with bidentate pyridyl-1,2,3-triazole and 2,2'-dipyridylamine and their tricarbonylrhenium(I) complexes was prepared and fully characterised by NMR, single-crystal X-ray diffraction, UV-Vis and fluorescence spectroscopy in biorelevant conditions. The fluorescein and benzimidazo[1,2-a]quinoline ligands and their complexes with Re(I) showed interactions with ds-DNA/RNA and HSA, characterised by thermal denaturation measurements, fluorimetric and circular dichroism titrations. The binding constants revealed that addition of Re(I) increases the affinity of fluorescein but decreases the affinity of benzimidazo[1,2-a]quinoline. The complexation of Re(I) had the opposite effect on fluorescein and benzimidazo[1,2-a]quinoline ligands' fluorimetric sensitivity upon biomacromolecule binding, Re(I) fluorescein complex emission being strongly quenched by DNA/RNA or HSA, while emission of Re(I) benzimidazo[1,2-a]quinolone complex was enhanced, particularly for HSA, making it a promising fluorescent probe. Some mono- and heterobimetallic complexes showed considerable antiproliferative activity on colon cancer cells (CT26 and HT29), with ferrocene dipyridylamine complexes exhibiting the best inhibitory activity, comparable to cisplatin. The correlation of the cytotoxicity data with the linker type between the ferrocene and the 1,2,3-triazole ring suggests that direct binding of the metallocene to the 1,2,3-triazole is favourable for antitumor activity. The Re(I) benzimidazo[1,2-a]quinolone complex showed moderate antiproliferative activity, in contrast to the Re(I) fluorescein complex, which exhibited weak activity on CT26 cells and no activity on HT29 cells. The accumulation of the Re(I) benzimidazo[1,2-a]quinolone complex in the lysosomes of CT26 cells indicates the site of its bioactivity, thus making this complex a potential theranostic agent.
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Affiliation(s)
- Silvio Jakopec
- University of Zagreb, Faculty of Chemical Engineering and Technology, Department of Organic Chemistry, Marulićev trg 20, 10 000 Zagreb, Croatia.
| | - Lisa Gourdon-Grünewaldt
- Chimie ParisTech, PSL University, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology, France.
| | - Ivona Čipor
- Ruđer Bošković Institute, Division of Organic Chemistry and Biochemistry, Laboratory for Biomolecular Interactions and Spectroscopy, Bijenička cesta 54, 10 000 Zagreb, Croatia
| | - Andrijana Meščić Macan
- University of Zagreb, Faculty of Chemical Engineering and Technology, Department of Organic Chemistry, Marulićev trg 20, 10 000 Zagreb, Croatia.
| | - Berislav Perić
- Ruđer Bošković Institute, Division of Materials Chemistry, Laboratory for Solid State and Complex Compounds Chemistry, Bijenička cesta 54, 10 000 Zagreb, Croatia.
| | - Ivo Piantanida
- Ruđer Bošković Institute, Division of Organic Chemistry and Biochemistry, Laboratory for Biomolecular Interactions and Spectroscopy, Bijenička cesta 54, 10 000 Zagreb, Croatia
| | - Kevin Cariou
- Chimie ParisTech, PSL University, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology, France.
| | - Gilles Gasser
- Chimie ParisTech, PSL University, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology, France.
| | - Srećko I Kirin
- Ruđer Bošković Institute, Division of Materials Chemistry, Laboratory for Solid State and Complex Compounds Chemistry, Bijenička cesta 54, 10 000 Zagreb, Croatia.
| | - Silvana Raić-Malić
- University of Zagreb, Faculty of Chemical Engineering and Technology, Department of Organic Chemistry, Marulićev trg 20, 10 000 Zagreb, Croatia.
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4
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Majumder A, Naskar R, Roy P, Mondal B, Garai S, Maity R. A naphthalene-based heterobimetallic triazolylidene Ir III/Pd II complex: regioselective to regiospecific C-H activation, tandem catalysis and a copper-free Sonogashira reaction. Dalton Trans 2023; 52:2272-2281. [PMID: 36723111 DOI: 10.1039/d2dt03508a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Heterobimetallic complexes featuring mesoionic carbene (MIC) donor ligands are gaining enormous popularity in tandem catalysis owing to the combined action of two different metal centers during catalysis. A rare version of the heterobimetallic PdII/IrIII complex possessing a cyclometalated mesoionic carbene (MIC) ligand is presented along with the analogous homodinuclear PdII complex. A sterically controlled regiospecific cyclometalation towards the formation of a six-membered ring complex over a five-membered ring complex has been performed using a naphthalene-based bis-MIC ligand platform. The interplay between regioselective vs. regiospecific C-H bond activation for the synthesis of cyclometalated IrIII complexes has also been demonstrated using the corresponding naphthyl-derived mono-imidazolylidene ligand. Both homodinuclear PdII and heterobimetallic PdII/IrIII complexes have been characterized using standard spectroscopic techniques including 1H, 13C{1H}, 2D correlation NMR spectroscopy and ESI mass spectrometry. The structure of the cyclometalated heterobimetallic complex has been established by single crystal XRD. The heterobimetallic complex has been employed as a pre-catalyst in the tandem Suzuki-Miyaura/transfer hydrogenation reaction and the homobimetallic PdII complex has been successfully employed as a catalyst in both the Sonogashira coupling and α-arylation of 1-methyl-2-oxindole.
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Affiliation(s)
- Adhir Majumder
- Department of Chemistry, University of Calcutta, Kolkata, West Bengal, 700009, India.
| | - Rajat Naskar
- Department of Chemistry, University of Calcutta, Kolkata, West Bengal, 700009, India.
| | - Pallabi Roy
- Department of Chemistry, University of Calcutta, Kolkata, West Bengal, 700009, India.
| | - Bhaskar Mondal
- Department of Chemistry, University of Calcutta, Kolkata, West Bengal, 700009, India.
| | - Somenath Garai
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221 005, Uttar Pradesh, India
| | - Ramananda Maity
- Department of Chemistry, University of Calcutta, Kolkata, West Bengal, 700009, India.
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5
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Illam PM, Tiwari CS, Rit A. Towards new coordination modes of 1,2,3-triazolylidene: controlled by the nature of the 1 st metalation in a heteroditopic bis-NHC ligand. Chem Sci 2022; 13:13387-13392. [PMID: 36507188 PMCID: PMC9682892 DOI: 10.1039/d2sc05024b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 10/20/2022] [Indexed: 12/15/2022] Open
Abstract
An unusual effect of the nature of the first metal coordination of a heteroditopic N-heterocyclic carbene ligand (L2) towards the coordination behavior of 1,2,3-tzNHC is explored. The first metal coordination at the ImNHC site (complexes 3 and 4) was noted to substantially influence the electronics of the 1,2,3-triazolium moiety leading to an unprecedented chemistry of this MIC donor. Along this line, the RhIII/IrIII-orthometalation in complexes 4 makes the triazolium C4-H more downfield shifted than C5-H, whereas a reverse trend, although to a lesser extent, is observed in the case of the non-chelated PdII-coordination. This difference in behavior assisted us to achieve the selective activation of triazole C4/C5 positions, not observed before, as supported by the isolation of the homo- and hetero-bimetallic complexes, 5, 6 and 7-9via C5- and C4-metalation, respectively. Furthermore, the %V bur calculations eliminate any considerable steric influence and the DFT studies strongly support the selectivity observed during bimetalation.
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Affiliation(s)
| | | | - Arnab Rit
- Department of Chemistry, Indian Institute of Technology MadrasChennai 600036India
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6
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Ibrahim H, Bala MD, Friedrich HB. Poly-functional imino-N-heterocyclic carbene ligands: Synthesis, complexation, and catalytic applications. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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7
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Zámbó GG, Mayr J, Sauer MJ, Schlachta TP, Reich RM, Kühn FE. The first macrocyclic abnormally coordinating tetra-1,2,3-triazole-5-ylidene iron complex: a promising candidate for olefin epoxidation. Dalton Trans 2022; 51:13591-13595. [PMID: 36039702 DOI: 10.1039/d2dt02561b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first macrocyclic and abnormally coordinating, mesoionic N-heterocyclic carbene iron complex has been synthesised and characterised via ESI-MS, EA, SC-XRD, CV, NMR and UV/Vis spectroscopy. 13C-NMR spectroscopy and CV measurements indicate a strong σ-donor ability of the carbene moieties, suggesting an efficient catalytic activity of the iron complex in oxidation reactions. Initial tests in the epoxidation of cis-cyclooctene as a model substrate confirm this assumption.
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Affiliation(s)
- Greta G Zámbó
- Molecular Catalysis, Department of Chemistry and Catalysis Research Centre, Technische Universität München, Lichtenbergstr. 4, 85784 Garching bei München, Germany.
| | - Johannes Mayr
- Molecular Catalysis, Department of Chemistry and Catalysis Research Centre, Technische Universität München, Lichtenbergstr. 4, 85784 Garching bei München, Germany.
| | - Michael J Sauer
- Molecular Catalysis, Department of Chemistry and Catalysis Research Centre, Technische Universität München, Lichtenbergstr. 4, 85784 Garching bei München, Germany.
| | - Tim P Schlachta
- Molecular Catalysis, Department of Chemistry and Catalysis Research Centre, Technische Universität München, Lichtenbergstr. 4, 85784 Garching bei München, Germany.
| | - Robert M Reich
- Molecular Catalysis, Department of Chemistry and Catalysis Research Centre, Technische Universität München, Lichtenbergstr. 4, 85784 Garching bei München, Germany.
| | - Fritz E Kühn
- Molecular Catalysis, Department of Chemistry and Catalysis Research Centre, Technische Universität München, Lichtenbergstr. 4, 85784 Garching bei München, Germany.
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8
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de la Fuente-Olvera AA, Ruiz-Mendoza FJ, Vasquez-Perez JM, Melendez-Rodriguez M, Alvarez-Hernandez A, Salazar-Pereda V, Mendoza-Espinosa D. <p class="Title1"><span lang="DE">Rhodium(I) complexes bearing hydroxyl‐functionalized 1,2,3‐triazolylidenes and their catalytic application <o:p></o:p></span></p>. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | | | | | | | | | | | - Daniel Mendoza-Espinosa
- Universidad Autonoma del Estado de Hidalgo Chemsitry Carretera Pachuca-TulancingoKm 4.5Mineral de la Reforma 42090 Mineral de la Reforma MEXICO
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9
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Naskar R, Sinhababu S, Majumder A, Maity R. Synthesis of Pd
II
Triazolylidene Complexes via an Unusual C
sp2
‐C
sp2
Decoupling Reaction: Applications in α‐Arylation of Amide and Suzuki‐Miyaura Coupling Reactions. ChemistrySelect 2022. [DOI: 10.1002/slct.202201615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Rajat Naskar
- Department of Chemistry University of Calcutta 92-APC Road Kolkata 700009 India
| | | | - Adhir Majumder
- Department of Chemistry University of Calcutta 92-APC Road Kolkata 700009 India
| | - Ramananda Maity
- Department of Chemistry University of Calcutta 92-APC Road Kolkata 700009 India
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10
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Mukherjee N, Mondal B, Saha TN, Maity R. Palladium, Iridium and Rhodium Complexes Bearing Chiral N‐Heterocyclic Carbene Ligands Applied in Asymmetric Catalysis. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6794] [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)
| | - Bhaskar Mondal
- Department of Chemistry University of Calcutta Kolkata India
| | - Tarak Nath Saha
- Department of Chemistry University of Calcutta Kolkata India
| | - Ramananda Maity
- Department of Chemistry University of Calcutta Kolkata India
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11
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Rudolf R, Neuman NI, Walter RRM, Ringenberg MR, Sarkar B. Mesoionic Imines (MIIs): Strong Donors and Versatile Ligands for Transition Metals and Main Group Substrates. Angew Chem Int Ed Engl 2022; 61:e202200653. [PMID: 35286004 PMCID: PMC9322014 DOI: 10.1002/anie.202200653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Indexed: 11/08/2022]
Abstract
We report the synthesis and the reactivity of 1,2,3‐triazolin‐5‐imine type mesoionic imines (MIIs). The MIIs are accessible by a base‐mediated cycloaddition between a substituted acetonitrile and an aromatic azide, methylation by established routes and subsequent deprotonation. C=O‐stretching frequencies in MII−CO2 and −Rh(CO)2Cl complexes were used to determine the overall donor strength. The MIIs are stronger donors than the N‐heterocyclic imines (NHIs). MIIs are excellent ligands for main group elements and transition metals in which they display substituent‐induced fluorine‐specific interactions and undergo C−H activation. DFT calculations gave insights into the frontier orbitals of the MIIs. The calculations predict a relatively small HOMO–LUMO gap compared to other related ligands. MIIs are potentially able to act as both π‐donor and π‐acceptor ligands. This report highlights the potential of MIIs to display exciting properties with a huge potential for future development.
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Affiliation(s)
- Richard Rudolf
- Lehrstuhl für Anorganische Koordinationschemie Institut für Anorganische Chemie University of Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Nicolás I. Neuman
- Lehrstuhl für Anorganische Koordinationschemie Institut für Anorganische Chemie University of Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
- Instituto de Desarrollo Tecnológico para la Industria Química INTEC, UNL-CONICET Predio CONICET Santa Fe “Dr. Alberto Cassano” Colectora Ruta Nacional 168, Km 0 Paraje El Pozo S3000ZAA) Santa Fe Argentina
| | - Robert R. M. Walter
- Lehrstuhl für Anorganische Koordinationschemie Institut für Anorganische Chemie University of Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Mark. R. Ringenberg
- Lehrstuhl für Anorganische Koordinationschemie Institut für Anorganische Chemie University of Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Biprajit Sarkar
- Lehrstuhl für Anorganische Koordinationschemie Institut für Anorganische Chemie University of Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
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12
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Nestke S, Stubbe J, Koehler R, Ronge E, Albold U, Vioel W, Jooss C, Sarkar B, Siewert I. A Binuclear Cobalt Complex in the Electrochemical Water Oxidation Reaction. Z Anorg Allg Chem 2022. [DOI: 10.1002/zaac.202200119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Sebastian Nestke
- Universität Göttingen Institut für Anorganische Chemie Tammannstr. 4 37077 Göttingen Germany
| | - Jessica Stubbe
- Institut für Chemie und Biochemie Freie Universität Berlin Fabeckstraße 34–36 14195 Berlin Germany
| | - Robert Koehler
- Hochschule für Angewandte Wissenschaft und Kunst Göttingen Fakultät Ingenieurwissenschaften und Gesundheit Von-Ossietzky-Straße 99 37085 Göttingen Germany
| | - Emanuel Ronge
- Universität Göttingen Institut für Materialphysik Chemie Friedrich-Hund-Platz 1 37077 Göttingen Germany
| | - Uta Albold
- Institut für Chemie und Biochemie Freie Universität Berlin Fabeckstraße 34–36 14195 Berlin Germany
| | - Wolfgang Vioel
- Hochschule für Angewandte Wissenschaft und Kunst Göttingen Fakultät Ingenieurwissenschaften und Gesundheit Von-Ossietzky-Straße 99 37085 Göttingen Germany
| | - Christian Jooss
- Universität Göttingen Institut für Materialphysik Chemie Friedrich-Hund-Platz 1 37077 Göttingen Germany
| | - Biprajit Sarkar
- Institut für Chemie und Biochemie Freie Universität Berlin Fabeckstraße 34–36 14195 Berlin Germany
- Lehrstuhl für Anorganische Koordinationschemie Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Inke Siewert
- Universität Göttingen Institut für Anorganische Chemie Tammannstr. 4 37077 Göttingen Germany
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13
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Shit M, Dey A, Das Mahapatra A, Dutta B, Naskar K, Ray PP, Sinha C. Supramolecular assembly of an Au(III) complex of 2‐(3‐phenyl‐1H‐1,2,4‐triazol‐5‐yl)pyridine: Structure, biological studies and charge transportation. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Manik Shit
- Department of Chemistry Jadavpur University Kolkata India
- Narajole Raj College Paschim Medinipur Narajole India
| | - Arka Dey
- Department of Physics Jadavpur University Kolkata India
| | | | - Basudeb Dutta
- Department of Chemistry Jadavpur University Kolkata India
- Department of Chemical Sciences Indian Institute of Science Education and Research Kolkata Mohanpur West Bengal India
| | - Kaushik Naskar
- Department of Chemistry Jadavpur University Kolkata India
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14
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Wittwer B, Dickmann N, Berg S, Leitner D, Tesi L, Hunger D, Gratzl R, van Slageren J, Neuman NI, Munz D, Hohloch S. A mesoionic carbene complex of manganese in five oxidation states. Chem Commun (Camb) 2022; 58:6096-6099. [PMID: 35503035 DOI: 10.1039/d2cc00097k] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reaction between a carbazole-based mesoionic carbene ligand and manganese(II) iodide results in the formation of a rare air-stable manganese(IV) complex after aerobic workup. Cyclic voltammetry reveals the complex to be stable in five oxidation states. The electronic structure of all five oxidation states is elucidated chemically, spectroscopically (NMR, high-frequency EPR, UV-Vis, MCD), magnetically, and computationally (DFT, CASSCF).
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Affiliation(s)
- Benjamin Wittwer
- Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria.
| | - Nicole Dickmann
- University of Paderborn, Faculty of Science, Department of Chemistry, Warburger Straße 100, 33098 Paderborn, Germany
| | - Stephan Berg
- University of Paderborn, Faculty of Science, Department of Chemistry, Warburger Straße 100, 33098 Paderborn, Germany
| | - Daniel Leitner
- Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria.
| | - Lorenzo Tesi
- Institute of Physical Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - David Hunger
- Institute of Physical Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - Raphael Gratzl
- Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria.
| | - Joris van Slageren
- Institute of Physical Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - Nicolas I Neuman
- Institute of Inorganic Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany.,Instituto de Desarrollo Tecnológico para la Industria Química, INTEC, UNL-CONICET, Predio CONICET Santa Fe Dr Alberto Cassano, Ruta Nacional No 168, Km 0 Paraje El Pozo, (S3000ZAA) Santa Fe, Argentina.
| | - Dominik Munz
- Inorganic Chemistry: Coordination Chemistry, Saarland University Campus C4 1, 66123 Saarbrücken, Germany. .,Inorganic and General Chemistry, FAU Erlangen-Nürnberg, Egelandstr. 1, 91058 Erlangen, Germany
| | - Stephan Hohloch
- Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria.
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15
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Rudolf R, Neuman NI, Walter RRM, Ringenberg MR, Sarkar B. Mesoionische Imine (MIIs): Starke Donoren und vielseitige Liganden für Übergangsmetalle und Hauptgruppensubstrate. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202200653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Richard Rudolf
- Lehrstuhl für Anorganische Koordinationschemie Institut für Anorganische Chemie Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Deutschland
| | - Nicolás I. Neuman
- Lehrstuhl für Anorganische Koordinationschemie Institut für Anorganische Chemie Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Deutschland
- Instituto de Desarrollo Tecnológico para la Industria Química CINTEC, VUNL-CONICET VPredio CONICET Santa Fe “Dr. Alberto Cassano“ Colectora Ruta Nacional 168, Km 0 Paraje El Pozo S3000ZAA) Santa Fe Argentinien
| | - Robert R. M. Walter
- Lehrstuhl für Anorganische Koordinationschemie Institut für Anorganische Chemie Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Deutschland
| | - Mark. R. Ringenberg
- Lehrstuhl für Anorganische Koordinationschemie Institut für Anorganische Chemie Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Deutschland
| | - Biprajit Sarkar
- Lehrstuhl für Anorganische Koordinationschemie Institut für Anorganische Chemie Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Deutschland
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16
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Araya-López C, Conejeros J, Valdebenito C, Cabezas R, Merlet G, Marco JF, Abarca G, Salazar R, Romero J. Triazolium‐based ionic liquids supported on alumina as catalysts to produce 5‐HMF from fructose. ChemCatChem 2022. [DOI: 10.1002/cctc.202200046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Claudio Araya-López
- Universidad de Santiago de Chile Chemical Engineering avenida libertador bernardo ohiggins 3363Santiago 8500189 Santiago CHILE
| | - Jael Conejeros
- Universidad de Santiago de Chile Chemical Engineering CHILE
| | | | - René Cabezas
- Universidad Católica de la Santísima Concepción: Universidad Catolica de La Santisima Concepcion Química ambiental CHILE
| | - Gastón Merlet
- Universidad de Concepción: Universidad de Concepcion departamento de agroindustrias CHILE
| | - Jose F. Marco
- Rocasolano Institute of Physical Chemistry: Instituto de Quimica Fisica Rocasolano Institute of physical chemistry SPAIN
| | - Gabriel Abarca
- Universidad Bernardo O'Higgins Escuela de obstetricia y puericultura CHILE
| | - Ricardo Salazar
- Universidad de Santiago de Chile Department of material chemistry CHILE
| | - Julio Romero
- Universidad de Santiago de Chile Chemical engineering department avenida libertador bernardo ohiggins 33638500189Chile Santiago CHILE
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17
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Matsubara K, Tomomatsu K, Tajiri A, Watanabe A, Koga Y, Ishikawa R, Yamada Y. Pincer‐type Mesoionic Carbene Nickel(II) Complexes: Synthesis, Properties, Reactions, and Catalytic Application to the Suzuki–Miyaura Coupling Reaction of Aryl Bromides. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202100870] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kouki Matsubara
- Fukuoka University Department of Chemistry 8-19-1 NanakumaJonan-Ku 814-0180 Fukuoka JAPAN
| | | | - Ayame Tajiri
- Fukuoka University: Fukuoka Daigaku Chemistry JAPAN
| | | | - Yuji Koga
- Fukuoka University: Fukuoka Daigaku Chemistry JAPAN
| | | | - Yuji Yamada
- Fukuoka University: Fukuoka Daigaku Chemistry JAPAN
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18
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Patricio-Rangel EB, Salazar-Pereda V, Cortezano-Arellano O, Mendoza-Espinosa D. Multinuclear mesoionic 1,2,3-triazolylidene complexes: design, synthesis, and applications. Dalton Trans 2022; 51:2641-2651. [PMID: 35075472 DOI: 10.1039/d1dt04221a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The chemistry of multinuclear metal complexes bearing by N-heterocyclic carbene (NHC) ligands, is an area of fast growing interest in modern organometallic chemistry. In particular, complexes supported by mesoionic (MIC) 1,2,3-triazolylidenes are attracting a great deal attention due to their postulated superior donor capacity compared to classical NHC ligands. Despite the readily available synthetic routes to MIC-based ligand platforms featuring several substitution levels, most of the coordination chemistry of triazolylidenes is still dominated by mononuclear complexes. In this short review article, recent progress on the design and synthesis of multinuclear triazolylidene complexes (ranging from di- to tetranuclear species) is discussed. Special emphasis is placed on their structural features, electronic properties and catalytic applications.
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Affiliation(s)
- Emmanuel B Patricio-Rangel
- Área Académica de Química, Universidad Autónoma del Estado de Hidalgo, Carretera Pachuca-Tulancingo Km. 4.5, Mineral de la Reforma, Hidalgo, 42090, Mexico.
| | - Verónica Salazar-Pereda
- Área Académica de Química, Universidad Autónoma del Estado de Hidalgo, Carretera Pachuca-Tulancingo Km. 4.5, Mineral de la Reforma, Hidalgo, 42090, Mexico.
| | - Omar Cortezano-Arellano
- Instituto de Ciencias Básicas, Universidad Veracruzana, Calle Dr Luis Castelazo Ayala S/N. Col. Industrial Animas, 91190 Xalapa, Veracruz, Mexico
| | - Daniel Mendoza-Espinosa
- Área Académica de Química, Universidad Autónoma del Estado de Hidalgo, Carretera Pachuca-Tulancingo Km. 4.5, Mineral de la Reforma, Hidalgo, 42090, Mexico.
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19
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Maity R, Sarkar B. Chemistry of Compounds Based on 1,2,3-Triazolylidene-Type Mesoionic Carbenes. JACS AU 2022; 2:22-57. [PMID: 35098220 PMCID: PMC8790748 DOI: 10.1021/jacsau.1c00338] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Indexed: 05/04/2023]
Abstract
Mesoionic carbenes (MICs) of the 1,2,3-triazolylidene type have established themselves as a popular class of compounds over the past decade. Primary reasons for this popularity are their modular synthesis and their strong donor properties. While such MICs have mostly been used in combination with transition metals, the past few years have also seen their utility together with main group elements. In this paper, we present an overview of the recent developments on this class of compounds that include, among others, (i) cationic and anionic MIC ligands, (ii) the donor/acceptor properties of these ligands with a focus on the several methods that are known for estimating such donor/acceptor properties, (iii) a detailed overview of 3d metal complexes and main group compounds with these MIC ligands, (iv) results on the redox and photophysical properties of compounds based on MIC ligands, and (v) an overview on electrocatalysis, redox-switchable catalysis, and small-molecule activation to highlight the applications of compounds based on MIC ligands in contemporary chemistry. By discussing several aspects from the synthetic, spectroscopic, and application point of view of these classes of compounds, we highlight the state of the art of compounds containing MICs and present a perspective for future research in this field.
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Affiliation(s)
- Ramananda Maity
- Dr.
R. Maity Department of Chemistry, University
of Calcutta, 92, A. P.
C. Road, Kolkata 700009, India
| | - Biprajit Sarkar
- Prof.
Dr. B. Sarkar Lehrstuhl für Anorganische Koordinationschemie,
Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
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20
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Nylund PVS, Monney B, Weder C, Albrecht M. N-Heterocyclic carbene iron complexes catalyze the ring-opening polymerization of lactide. Catal Sci Technol 2022; 12:996-1004. [PMID: 35222940 PMCID: PMC8819372 DOI: 10.1039/d1cy02143e] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 01/05/2022] [Indexed: 12/02/2022]
Abstract
Poly(lactic acid), PLA, which holds great promise as a biodegradable substitute of fossil resource-derived polyolefins, is industrially produced by the ring-opening polymerization of lactide using a potentially harmful tin catalyst. Based on mechanistic insights into the reaction of N-heterocyclic carbene (NHC) iron complexes with carbonyl substrates, we surmised and demonstrate here that such complexes are excellent catalysts for the bulk polymerization of lactide. We show that an iron complex with a triazolylidene NHC ligand is active at lactide/catalyst ratios of up to 10 000 : 1, produces polylactide with relatively high number-average molecular weights (up to 50 kg mol−1) and relatively narrow dispersity (Đ ∼ 1.6), and features an apparent polymerization rate constant kapp of up to 8.5 × 10−3 s−1, which is more than an order of magnitude higher than that of the industrially used tin catalyst. Kinetic studies and end-group analyses support that the catalytically active species is well defined and that the polymerization proceeds via a coordination–insertion mechanism. The robustness of the catalyst allows technical grade lactide to be polymerized, thus offering ample potential for application on larger scale in an industrially relevant setting. Iron(ii) complexes containing a mesoionic triazolylidene ligand are highly efficient catalyst precursors for the ring opening polymerization of lactide to poly(lactic acid), surpassing other iron complexes and also industrially utilized Sn(oct)2.![]()
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Affiliation(s)
- Pamela V. S. Nylund
- Department of Chemistry, Biochemistry & Pharmaceutical Sciences, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
| | - Baptiste Monney
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - Christoph Weder
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - Martin Albrecht
- Department of Chemistry, Biochemistry & Pharmaceutical Sciences, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
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21
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Majumder A, Naskar R, Phukan SJ, Maity R. Bimetallic Pd II complexes with NHC/Py/PCy 3 donor set ligands: applications in α-arylation, Suzuki–Miyaura and Sonogashira coupling reactions. NEW J CHEM 2022. [DOI: 10.1039/d2nj01852g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bimetallic PdII complexes bearing mixed NHC/Py/PCy3 donor set ligands are presented. A complex with a mixed NHC/PCy3 donor set ligands shows superior activity compared to the PEPPSI type complexes in α-arylation and Sonogashira coupling reactions.
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Affiliation(s)
- Adhir Majumder
- Department of Chemistry, University of Calcutta, Kolkata, West Bengal, 700009, India
| | - Rajat Naskar
- Department of Chemistry, University of Calcutta, Kolkata, West Bengal, 700009, India
| | - Shankab J. Phukan
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh 221 005, India
| | - Ramananda Maity
- Department of Chemistry, University of Calcutta, Kolkata, West Bengal, 700009, India
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22
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Nößler M, Hunger D, Neuman NI, Reimann M, Reichert F, Winkler M, Klein J, Bens T, Suntrup L, Demeshko S, Stubbe J, Kaupp M, van Slageren J, Sarkar B. Fluorinated Click-Derived Tripodal Ligands Drive Spin Crossover in both Iron(II) and Cobalt(II) Complexes. Dalton Trans 2022; 51:10507-10517. [DOI: 10.1039/d2dt01005d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Control of the spin state of metal complexes is important because it leads to a precise control over the physical properties and the chemical reactivity of the metal complexes. Currently,...
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23
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Chang CW, Lee CR, Lee GH, Lu KL. The straightforward synthesis of N-coordinated ruthenium 4-aryl-1,2,3-triazolato complexes by [3 + 2] cycloaddition reactions of a ruthenium azido complex with terminal phenylacetylenes and non-covalent aromatic interactions in structures. RSC Adv 2022; 12:24830-24838. [PMID: 36128372 PMCID: PMC9430631 DOI: 10.1039/d2ra04835c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 08/22/2022] [Indexed: 11/21/2022] Open
Abstract
The first example of synthesis of N-coordinated ruthenium 4-aryl-1,2,3-triazolato complexes by [3 + 2] cycloaddition reactions of a ruthenium azido complex with a series of terminal phenylacetylenes.
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Affiliation(s)
- Chao-Wan Chang
- Division of Preparatory Programs for Overseas Chinese Students, National Taiwan Normal University, Linkou, New Taipei City 24449, Taiwan
| | - Chi-Rung Lee
- Department of Applied Materials Science and Technology, Minghsin University of Science and Technology, Hsinchu 30401, Taiwan
| | - Gene-Hsiang Lee
- Instrumentation Center, National Taiwan University, Taipei 10617, Taiwan
| | - Kuang-Lieh Lu
- Department of Chemistry, Fu Jen Catholic University, New Taipei City 242, Taiwan
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24
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Nößler M, Hunger D, Reichert F, Winkler M, Reimann M, Klein J, Suhr S, Suntrup L, Beerhues J, Kaupp M, van Slageren J, Sarkar B. Spin-state control of cobalt(II) and iron(II) complexes with click-derived tripodal ligands through non-covalent and fluorine-specific interactions. Dalton Trans 2021; 50:18097-18106. [PMID: 34851330 DOI: 10.1039/d1dt03535e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The fine-tuning of intermolecular or intramolecular non-covalent interactions (NCIs) and thus the precise synthesis of metal complexes in which the spin states can be controlled by NCIs remains challenging, even though several such complexes have been intensively studied. In this regard, we present mononuclear cobalt(II) and iron(II) complexes with "click"-derived tripodal ligands that contain fluorinated benzyl substituents in the secondary coordination sphere. The complexes were co-crystallized with different solvent molecules to decipher the effect of the crystallized solvents on NCIs, and on the spin state of the metal ion. Additionally, the fluorine-specific interactions in the secondary coordination sphere were examined. We present a first structure-property correlation between the nature of interaction of the (per)fluorinated aromatic substituents on the ligand periphery, and the spin state of the metal complexes. In particular, the TF5TA containing ligand show interesting stacking motifs depending on the used solvent, and these interactions have an influence on the spin state of the cobalt(II) complexes. Furthermore, the iron(II) complex thereof, Fe(TF5TA)2(BF4)2·2EtOH displays spin crossover (SCO).
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Affiliation(s)
- Maite Nößler
- Institut für Chemie und Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34-36, 14195, Berlin, Germany.
| | - David Hunger
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany.
| | - Felix Reichert
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany.
| | - Mario Winkler
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany.
| | - Marc Reimann
- Institut für Theoretische Chemie, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany
| | - Johannes Klein
- Institut für Chemie und Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34-36, 14195, Berlin, Germany.
| | - Simon Suhr
- Lehrstuhl für Anorganische Koordinationschemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - Lisa Suntrup
- Institut für Chemie und Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34-36, 14195, Berlin, Germany.
| | - Julia Beerhues
- Lehrstuhl für Anorganische Koordinationschemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - Martin Kaupp
- Institut für Theoretische Chemie, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany
| | - Joris van Slageren
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany.
| | - Biprajit Sarkar
- Institut für Chemie und Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34-36, 14195, Berlin, Germany. .,Lehrstuhl für Anorganische Koordinationschemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
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25
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Watt FA, Sieland B, Dickmann N, Schoch R, Herbst-Irmer R, Ott H, Paradies J, Kuckling D, Hohloch S. Coupling of CO 2 and epoxides catalysed by novel N-fused mesoionic carbene complexes of nickel(II). Dalton Trans 2021; 50:17361-17371. [PMID: 34788774 DOI: 10.1039/d1dt03311e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the syntheses of two rigid mesoionic carbene (MIC) ligands with a carbazole backbone via an intramolecular Finkelstein-cyclisation cascade and investigate their coordination behavior towards nickel(II) acetate. Despite the nickel(II) carbene complexes 4a,b showing only minor differences in their chemical composition, they display curious differences in their chemical properties, e.g. solubility. Furthermore, the potential of these novel MIC complexes in the coupling of carbon dioxide and epoxides as well as the differences in reactivity compared to classical NHC-derived complexes are evaluated.
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Affiliation(s)
- Fabian A Watt
- Paderborn University, Faculty of Science, Department of Chemistry, Warburger Straße 100, 33098 Paderborn, Germany
| | - Benedikt Sieland
- Paderborn University, Faculty of Science, Department of Chemistry, Warburger Straße 100, 33098 Paderborn, Germany
| | - Nicole Dickmann
- Paderborn University, Faculty of Science, Department of Chemistry, Warburger Straße 100, 33098 Paderborn, Germany
| | - Roland Schoch
- Paderborn University, Faculty of Science, Department of Chemistry, Warburger Straße 100, 33098 Paderborn, Germany
| | - Regine Herbst-Irmer
- University of Göttingen, Institute of Inorganic Chemistry, Tammannstraße 4, 37077 Göttingen, Germany
| | - Holger Ott
- Bruker AXS GmbH, Östliche Rheinbrückenstraße 49, 76187 Karlsruhe, Germany
| | - Jan Paradies
- Paderborn University, Faculty of Science, Department of Chemistry, Warburger Straße 100, 33098 Paderborn, Germany
| | - Dirk Kuckling
- Paderborn University, Faculty of Science, Department of Chemistry, Warburger Straße 100, 33098 Paderborn, Germany
| | - Stephan Hohloch
- University of Innsbruck, Faculty of Chemistry and Pharmacy, Institute of General, Inorganic and Theoretical Chemistry, Innrain 80-82, 6020 Innsbruck, Austria.
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26
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Narayana MA, Vaddamanu M, Sathyanarayana A, Siddhant K, Sugiyama S, Ozaki K, Rengan AK, Velappan K, Hisano K, Tsutsumi O, Prabusankar G. A gold(I) 1,2,3-triazolylidene complex featuring the interaction between gold and methine hydrogen. Dalton Trans 2021; 50:16514-16518. [PMID: 34761758 DOI: 10.1039/d1dt02827h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A mesoionic N-heterocyclic carbene-gold(I) complex with a unique Au⋯H-C(methine) intramolecular hydrogen bonding interaction has been investigated in the solid state. The structure of this new neutral gold(I)-carbene was characterized by FT-IR and NMR spectroscopy, TGA, and X-ray diffraction techniques. Density functional theory (DFT) and atoms-in-molecule (AIM) analysis revealed that the gold-hydrogen bonding situation is more favored. Besides, the photophysical properties of the gold(I) complex were also investigated.
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Affiliation(s)
- Mannem Adi Narayana
- Department of Chemistry, Indian Institute of Technology Hyderabad, India-502 284.
| | - Moulali Vaddamanu
- Department of Chemistry, Indian Institute of Technology Hyderabad, India-502 284.
| | | | - Kumar Siddhant
- Department of Applied Chemistry, Ritsumeikan University, Kusatsu 525-8577, Japan.
| | - Shohei Sugiyama
- Department of Applied Chemistry, Ritsumeikan University, Kusatsu 525-8577, Japan.
| | - Kazuhisa Ozaki
- Department of Applied Chemistry, Ritsumeikan University, Kusatsu 525-8577, Japan.
| | - Aravind Kumar Rengan
- Department of Biomedical Engineering, Indian Institute of Technology Hyderabad, India-502 284
| | - Kavitha Velappan
- DAV-IITH, Indian Institute of Technology Hyderabad, India-502 284
| | - Kyohei Hisano
- Department of Applied Chemistry, Ritsumeikan University, Kusatsu 525-8577, Japan.
| | - Osamu Tsutsumi
- Department of Applied Chemistry, Ritsumeikan University, Kusatsu 525-8577, Japan.
| | - Ganesan Prabusankar
- Department of Chemistry, Indian Institute of Technology Hyderabad, India-502 284.
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27
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Ferraro V, Sole R, Bortoluzzi M, Beghetto V, Castro J. Tris
‐isocyanide copper(I) complex enabling copper azide‐alkyne cycloaddition in neat conditions. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6401] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Valentina Ferraro
- Dipartimento di Scienze Molecolari e Nanosistemi Università Ca' Foscari Venice Italy
| | - Roberto Sole
- Dipartimento di Scienze Molecolari e Nanosistemi Università Ca' Foscari Venice Italy
| | - Marco Bortoluzzi
- Dipartimento di Scienze Molecolari e Nanosistemi Università Ca' Foscari Venice Italy
- Consorzio Interuniversitario Reattività Chimica e Catalisi (CIRCC) Bari Italy
| | - Valentina Beghetto
- Dipartimento di Scienze Molecolari e Nanosistemi Università Ca' Foscari Venice Italy
- Consorzio Interuniversitario Reattività Chimica e Catalisi (CIRCC) Bari Italy
- Crossing srl Treviso Italy
| | - Jesús Castro
- Departamento de Química Inorgánica Universidade de Vigo, Facultade de Química, Edificio de Ciencias Experimentais Vigo Spain
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28
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Friães S, Realista S, Gomes CSB, Martinho PN, Royo B. Click-Derived Triazoles and Triazolylidenes of Manganese for Electrocatalytic Reduction of CO 2. Molecules 2021; 26:molecules26216325. [PMID: 34770734 PMCID: PMC8588546 DOI: 10.3390/molecules26216325] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 10/14/2021] [Accepted: 10/16/2021] [Indexed: 11/16/2022] Open
Abstract
A series of new fac-[Mn(L)(CO)3Br] complexes where L is a bidentate chelating ligand containing mixed mesoionic triazolylidene-pyridine (MIC^py, 1), triazolylidene-triazole (MIC^trz, 2), and triazole-pyridine (trz^py, 3) ligands have been prepared and fully characterized, including the single crystal X-ray diffraction studies of 1 and 2. The abilities of 1–3 and complex fac-[Mn(MIC^MIC)(CO)3Br] (4) to catalyze the electroreduction of CO2 has been assessed for the first time. It was found that all complexes displayed a current increase under CO2 atmosphere, being 3 and 4 the most active complexes. Complex 3, bearing a N^N-based ligand exhibited a good efficiency and an excellent selectivity for reducing CO2 to CO in the presence of 1.0 M of water, at low overpotential. Interestingly, complex 4 containing the strongly electron donating di-imidazolylidene ligand exhibited comparable activity to 3, when the experiments were performed in neat acetonitrile at slightly higher overpotential (−1.86 vs. −2.14 V).
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Affiliation(s)
- Sofia Friães
- ITQB NOVA, Instituto de Tecnologia Química e Biológica António Xavier, Av. da República, 2780-157 Oeiras, Portugal; (S.F.); (S.R.)
| | - Sara Realista
- ITQB NOVA, Instituto de Tecnologia Química e Biológica António Xavier, Av. da República, 2780-157 Oeiras, Portugal; (S.F.); (S.R.)
| | - Clara S. B. Gomes
- LAQV-REQUIMTE, Department of Chemistry, Campus de Caparica, NOVA School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal;
- Associated Laboratory i4HB-Institute for Health and Bioeconomy, School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
- UCIBIO-Applied Molecular Biosciences Unit, Department of Chemistry, School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
| | - Paulo N. Martinho
- Biosystems and Integrative Sciences Institute (BioISI), Faculdade de Ciências, Campo Grande, Universidade de Lisboa, 1749-016 Lisboa, Portugal;
- Centro de Química Estrutural, Campo Grande, Faculdade de Ciências Universidade de Lisboa, 1749-016 Lisboa, Portugal
| | - Beatriz Royo
- ITQB NOVA, Instituto de Tecnologia Química e Biológica António Xavier, Av. da República, 2780-157 Oeiras, Portugal; (S.F.); (S.R.)
- Correspondence:
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29
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Neururer F, Liu S, Leitner D, Baltrun M, Fisher KR, Kopacka H, Wurst K, Daumann LJ, Munz D, Hohloch S. Mesoionic Carbenes in Low- to High-Valent Vanadium Chemistry. Inorg Chem 2021; 60:15421-15434. [PMID: 34590834 PMCID: PMC8527456 DOI: 10.1021/acs.inorgchem.1c02087] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Indexed: 12/12/2022]
Abstract
We report the synthesis of vanadium(V) oxo complex 1 with a pincer-type dianionic mesoionic carbene (MIC) ligand L1 and the general formula [VOCl(L1)]. A comparison of the structural (SC-XRD), electronic (UV-vis), and electrochemical (cyclic voltammetry) properties of 1 with the benzimidazolinylidene congener 2 (general formula [VOCl(L2)]) shows that the MIC is a stronger donor also for early transition metals with low d-electron population. Since electrochemical studies revealed both complexes to be reversibly reduced, the stronger donor character of MICs was not only demonstrated for the vanadium(V) but also for the vanadium(IV) oxidation state by isolating the reduced vanadium(IV) complexes [Co(Cp*)2][1] and [Co(Cp*)2][2] ([Co(Cp*)2] = decamethylcobaltocenium). The electronic structures of the compounds were investigated by computational methods. Complex 1 was found to be a moderate precursor for salt metathesis reactions, showing selective reactivity toward phenolates or secondary amides, but not toward primary amides and phosphides, thiophenols, or aryls/alkyls donors. Deoxygenation with electron-rich phosphines failed to give the desired vanadium(III) complex. However, treatment of the deprotonated ligand precursor with vanadium(III) trichloride resulted in the clean formation of the corresponding MIC vanadium(III) complex 6, which undergoes a clean two-electron oxidation with organic azides yielding the corresponding imido complexes. The reaction with TMS-N3 did not afford a nitrido complex, but instead the imido complex 10. This study reveals that, contrary to popular belief, MICs are capable of supporting early transition-metal complexes in a variety of oxidation states, thus making them promising candidates for the activation of small molecules and redox catalysis.
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Affiliation(s)
- Florian
R. Neururer
- Institute
of Inorganic, General and Theoretical Chemistry, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria
| | - Shenyu Liu
- Faculty
of Science, Department of Chemistry, University
of Paderborn, Warburger Straße 100, 33098 Paderborn, Germany
| | - Daniel Leitner
- Institute
of Inorganic, General and Theoretical Chemistry, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria
| | - Marc Baltrun
- Faculty
of Science, Department of Chemistry, University
of Paderborn, Warburger Straße 100, 33098 Paderborn, Germany
| | - Katherine R. Fisher
- Department
Chemie, Ludwigs-Maximilians-University Munich, Butenandtstraße 5-13 Haus D, 81377 Munich, Germany
| | - Holger Kopacka
- Institute
of Inorganic, General and Theoretical Chemistry, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria
| | - Klaus Wurst
- Institute
of Inorganic, General and Theoretical Chemistry, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria
| | - Lena J. Daumann
- Department
Chemie, Ludwigs-Maximilians-University Munich, Butenandtstraße 5-13 Haus D, 81377 Munich, Germany
| | - Dominik Munz
- Fakultät
NT, Inorganic Chemistry: Coordination Chemistry, Saarland University, Campus C4.1, 66123 Saarbrücken, Germany
| | - Stephan Hohloch
- Institute
of Inorganic, General and Theoretical Chemistry, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria
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30
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Pantalon Juraj N, Kirin SI. Inorganic stereochemistry: Geometric isomerism in bis-tridentate ligand complexes. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214051] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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31
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Fang D, Zhang ZY, Shangguan Z, He Y, Yu C, Li T. (Hetero)arylazo-1,2,3-triazoles: "Clicked" Photoswitches for Versatile Functionalization and Electronic Decoupling. J Am Chem Soc 2021; 143:14502-14510. [PMID: 34476949 DOI: 10.1021/jacs.1c08704] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The development of light-responsive chemical systems often relies on the rational design and suitable incorporation of molecular photoswitches such as azobenzenes. Linking a photoswitch core with another π-conjugated molecular entity may give rise to intramolecular electronic coupling, which can dramatically impair the photoswitch function. Decoupling strategies have been developed based on additionally inserting a linker that can disrupt the through-bond electronic communication. Here we show that 1,2,3-triazole-a commonly used decoupling spacer-can be directly merged into the azoswitch core to construct a class of "self-decoupling" azoswitches called (hetero)arylazo-1,2,3-triazoles. Such azotriazole photoswitches are easily accessed and modularly functionalized by click chemistry. Their photoswitch property can be optimized by rational design of the substituent groups or heteroaryl rings, allowing (near-)quantitative E⇆Z photoisomerization yields and tunable Z-isomer thermal half-lives from days to years. Combined experimental and theoretical results demonstrate that the electronic structure of the photoswitch core is not substantially affected by various substituents attached to the 1,2,3-triazole unit, benefiting from its cross-conjugated nature. The combination of clickable synthesis, tunable photoswitch property, and self-decoupling ability makes (hetero)arylazo-1,2,3-triazoles intriguing molecular tools in developing photoresponsive systems with desired performance.
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Affiliation(s)
- Dong Fang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zhao-Yang Zhang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zhichun Shangguan
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yixin He
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
| | - Chunyang Yu
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
| | - Tao Li
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
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32
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Palladium(II) Complexes Bearing a Mixed Set of aNHC/Py/PR3/I2 Ligands: Applications in α-Arylation of Amide and Suzuki-Miyaura Coupling Reactions. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.121925] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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33
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Dong Z, Blaskovits JT, Fadaei-Tirani F, Scopelliti R, Sienkiewicz A, Corminboeuf C, Severin K. Tuning the π-Accepting Properties of Mesoionic Carbenes: A Combined Computational and Experimental Study. Chemistry 2021; 27:11983-11988. [PMID: 34105837 PMCID: PMC8456875 DOI: 10.1002/chem.202101742] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Indexed: 02/02/2023]
Abstract
Mesoionic imidazolylidenes are recognized as excellent electron‐donating ligands in organometallic and main group chemistry. However, these carbene ligands typically show poor π‐accepting properties. A computational analysis of 71 mesoionic imidazolylidenes that bear different aryl or heteroaryl substituents in C2 position was performed. The study has revealed that a diphenyltriazinyl (Dpt) substituent renders the corresponding carbene particularly π‐acidic. The computational results could be corroborated experimentally. A mesoionic imidazolylidene with a Dpt substituent was found to be a better σ‐donor and a better π‐acceptor compared to an Arduengo‐type N‐heterocyclic carbene. To demonstrate the utility of the new carbene, the ligand was used to stabilize a low‐valent paramagnetic tin compound.
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Affiliation(s)
- Zhaowen Dong
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - J Terence Blaskovits
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Farzaneh Fadaei-Tirani
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Rosario Scopelliti
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Andrzej Sienkiewicz
- Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland.,ADSresonances Sarl, Route de Genève 60B, 1028, Préverenges, Switzerland
| | - Clémence Corminboeuf
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Kay Severin
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
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34
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Franchino A, Martí À, Nejrotti S, Echavarren AM. Silver-Free Au(I) Catalysis Enabled by Bifunctional Urea- and Squaramide-Phosphine Ligands via H-Bonding. Chemistry 2021; 27:11989-11996. [PMID: 34018646 PMCID: PMC8457243 DOI: 10.1002/chem.202101751] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Indexed: 12/14/2022]
Abstract
A library of gold(I) chloride complexes with phosphine ligands incorporating pendant (thio)urea and squaramide H-bond donors was prepared with the aim of promoting chloride abstraction from Au(I) via H-bonding. In the absence of silver additives, complexes bearing squaramides and trifluoromethylated aromatic ureas displayed good catalytic activity in the cyclization of N-propargyl benzamides, as well as in a 1,6-enyne cycloisomerization, a tandem cyclization-indole addition reaction and the hydrohydrazination of phenylacetylene. Kinetic studies and DFT calculations indicate that the energetic span of the reaction is accounted by both the chloride abstraction step, facilitated by the bidentate H-bond donor via an associative mechanism, and the subsequent cyclization step.
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Affiliation(s)
- Allegra Franchino
- Institute of Chemical Research of Catalonia (ICIQ)Barcelona Institute of Science and TechnologyAv. Països Catalans 1643007TarragonaSpain
- Departament de Química Analítica i Química OrgànicaUniversitat Rovira i VirgiliC/ Marcel⋅lí Domingo s/n43007TarragonaSpain
| | - Àlex Martí
- Institute of Chemical Research of Catalonia (ICIQ)Barcelona Institute of Science and TechnologyAv. Països Catalans 1643007TarragonaSpain
- Departament de Química Analítica i Química OrgànicaUniversitat Rovira i VirgiliC/ Marcel⋅lí Domingo s/n43007TarragonaSpain
| | - Stefano Nejrotti
- Institute of Chemical Research of Catalonia (ICIQ)Barcelona Institute of Science and TechnologyAv. Països Catalans 1643007TarragonaSpain
- Departament de Química Analítica i Química OrgànicaUniversitat Rovira i VirgiliC/ Marcel⋅lí Domingo s/n43007TarragonaSpain
| | - Antonio M. Echavarren
- Institute of Chemical Research of Catalonia (ICIQ)Barcelona Institute of Science and TechnologyAv. Països Catalans 1643007TarragonaSpain
- Departament de Química Analítica i Química OrgànicaUniversitat Rovira i VirgiliC/ Marcel⋅lí Domingo s/n43007TarragonaSpain
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35
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Dierks P, Kruse A, Bokareva OS, Al-Marri MJ, Kalmbach J, Baltrun M, Neuba A, Schoch R, Hohloch S, Heinze K, Seitz M, Kühn O, Lochbrunner S, Bauer M. Distinct photodynamics of κ-N and κ-C pseudoisomeric iron(II) complexes. Chem Commun (Camb) 2021; 57:6640-6643. [PMID: 34126627 DOI: 10.1039/d1cc01716k] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Two closely related FeII complexes with 2,6-bis(1-ethyl-1H-1,2,3-triazol-4yl)pyridine and 2,6-bis(1,2,3-triazol-5-ylidene)pyridine ligands are presented to gain new insights into the photophysics of bis(tridentate) iron(ii) complexes. The [Fe(N^N^N)2]2+ pseudoisomer sensitizes singlet oxygen through a MC state with nanosecond lifetime after MLCT excitation, while the bis(tridentate) [Fe(C^N^C)2]2+ pseudoisomer possesses a similar 3MLCT lifetime as the tris(bidentate) [Fe(C^C)2(N^N)]2+ complexes with four mesoionic carbenes.
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Affiliation(s)
- Philipp Dierks
- Faculty of Science, Chemistry Department and Centre for Sustainable Systems Design, Paderborn University, 33098 Paderborn, Germany.
| | - Ayla Kruse
- Institute of Physics and Department of Life, Light and Matter, University of Rostock, 18051 Rostock, Germany
| | - Olga S Bokareva
- Institute of Physics and Department of Life, Light and Matter, University of Rostock, 18051 Rostock, Germany and Department of Physical Chemistry, Kazan Federal University, 420008 Kazan, Russia
| | - Mohammed J Al-Marri
- Institute of Physics and Department of Life, Light and Matter, University of Rostock, 18051 Rostock, Germany and College of Engineering, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Jens Kalmbach
- Institute of Inorganic Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Marc Baltrun
- Faculty of Science, Chemistry Department and Centre for Sustainable Systems Design, Paderborn University, 33098 Paderborn, Germany.
| | - Adam Neuba
- Faculty of Science, Chemistry Department and Centre for Sustainable Systems Design, Paderborn University, 33098 Paderborn, Germany.
| | - Roland Schoch
- Faculty of Science, Chemistry Department and Centre for Sustainable Systems Design, Paderborn University, 33098 Paderborn, Germany.
| | - Stephan Hohloch
- University of Innsbruck, Faculty of Chemistry and Pharmacy, Institute for General, Inorganic and Theoretical Chemistry, Innrain 80-82, Innsbruck 6020, Austria
| | - Katja Heinze
- Department of Chemistry, Johannes Gutenberg, University of Mainz, 55128 Mainz, Germany
| | - Michael Seitz
- Institute of Inorganic Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Oliver Kühn
- Institute of Physics and Department of Life, Light and Matter, University of Rostock, 18051 Rostock, Germany
| | - Stefan Lochbrunner
- Institute of Physics and Department of Life, Light and Matter, University of Rostock, 18051 Rostock, Germany
| | - Matthias Bauer
- Faculty of Science, Chemistry Department and Centre for Sustainable Systems Design, Paderborn University, 33098 Paderborn, Germany.
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36
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Kunfi A, Jablonkai I, Gazdag T, Mayer PJ, Kalapos PP, Németh K, Holczbauer T, London G. A photoresponsive palladium complex of an azopyridyl-triazole ligand: light-controlled solubility drives catalytic activity in the Suzuki coupling reaction. RSC Adv 2021; 11:23419-23429. [PMID: 35479800 PMCID: PMC9036612 DOI: 10.1039/d1ra03838a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 06/15/2021] [Indexed: 12/14/2022] Open
Abstract
Herein, the design and synthesis of a click-derived Pd-complex merged with a photoswitchable azobenzene unit is presented. While in the trans-form of the switch the complex showed limited solubility, the photogenerated cis-form rendered the molecule soluble in polar solvents. This light-controllable solubility was exploited to affect the catalytic activity in the Suzuki coupling reaction. The effect of the substrate and catalyst concentration and light intensity on the proceeding and outcome of the reaction was studied. Dehalogenation of the aryl iodide starting material was found to be a major side reaction; however, its occurrence was dependent on the applied light intensity.
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Affiliation(s)
- Attila Kunfi
- MTA TTK Lendület Functional Organic Materials Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences Magyar tudósok krt. 2. 1117 Budapest Hungary
| | - István Jablonkai
- MTA TTK Lendület Functional Organic Materials Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences Magyar tudósok krt. 2. 1117 Budapest Hungary
| | - Tamás Gazdag
- MTA TTK Lendület Functional Organic Materials Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences Magyar tudósok krt. 2. 1117 Budapest Hungary .,Institute of Chemistry, Eötvös Loránd University Pázmány Péter stny. 1/A 1117 Budapest Hungary
| | - Péter J Mayer
- MTA TTK Lendület Functional Organic Materials Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences Magyar tudósok krt. 2. 1117 Budapest Hungary .,Institute of Chemistry, University of Szeged Rerrich tér 1. 6720 Szeged Hungary
| | - Péter Pál Kalapos
- MTA TTK Lendület Functional Organic Materials Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences Magyar tudósok krt. 2. 1117 Budapest Hungary
| | - Krisztina Németh
- Institute of Chemistry, Eötvös Loránd University Pázmány Péter stny. 1/A 1117 Budapest Hungary.,MS Metabolomics Research Group, Instrumentation Center, Research Centre for Natural Sciences Magyar tudósok krt. 2 1117 Budapest Hungary
| | - Tamás Holczbauer
- Centre for Structural Science and Institute of Organic Chemistry, Research Centre for Natural Sciences Magyar tudósok krt. 2. 1117 Budapest Hungary
| | - Gábor London
- MTA TTK Lendület Functional Organic Materials Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences Magyar tudósok krt. 2. 1117 Budapest Hungary
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37
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Triazole-tethered ferrocene-quinoline conjugates: solid-state structure analysis, electrochemistry and theoretical calculations. Struct Chem 2021. [DOI: 10.1007/s11224-021-01801-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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38
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Rendón-Nava D, Angeles-Beltrán D, Rheingold AL, Mendoza-Espinosa D. Palladium(II) Complexes of a Neutral CCC-Tris(N-heterocyclic carbene) Pincer Ligand: Synthesis and Catalytic Applications. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00324] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- David Rendón-Nava
- Área Académica de Química, Universidad Autónoma del Estado de Hidalgo, Carretera Pachuca-Tulancingo Km 4.5, Mineral de la Reforma, Hidalgo, Mexico 42090
| | - Deyanira Angeles-Beltrán
- Departamento de Ciencias Básicas, Universidad Autónoma Metropolitana-Azcapotzalco, Avenida San Pablo 180, Ciudad de México, Mexico 02200
| | - Arnold L. Rheingold
- Department of Chemistry and Biochemistry, University of California at San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Daniel Mendoza-Espinosa
- Área Académica de Química, Universidad Autónoma del Estado de Hidalgo, Carretera Pachuca-Tulancingo Km 4.5, Mineral de la Reforma, Hidalgo, Mexico 42090
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39
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Mono‐ and Di‐Mesoionic Carbene‐Boranes: Synthesis, Structures and Utility as Reducing Agents. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100273] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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40
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van der Westhuizen D, Slabber CA, Fernandes MA, Joubert DF, Kleinhans G, van der Westhuizen CJ, Stander A, Munro OQ, Bezuidenhout DI. A Cytotoxic Bis(1,2,3-triazol-5-ylidene)carbazolide Gold(III) Complex Targets DNA by Partial Intercalation. Chemistry 2021; 27:8295-8307. [PMID: 33822431 PMCID: PMC8251726 DOI: 10.1002/chem.202100598] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Indexed: 12/13/2022]
Abstract
The syntheses of bis(triazolium)carbazole precursors and their corresponding coinage metal (Au, Ag) complexes are reported. For alkylated triazolium salts, di- or tetranuclear complexes with bridging ligands were isolated, while the bis(aryl) analogue afforded a bis(carbene) AuI -CNC pincer complex suitable for oxidation to the redox-stable [AuIII (CNC)Cl]+ cation. Although the ligand salt and the [AuIII (CNC)Cl]+ complex were both notably cytotoxic toward the breast cancer cell line MDA-MB-231, the AuIII complex was somewhat more selective. Electrophoresis, viscometry, UV-vis, CD and LD spectroscopy suggest the cytotoxic [AuIII (CNC)Cl]+ complex behaves as a partial DNA intercalator. In silico screening indicated that the [AuIII (CNC)Cl]+ complex can target DNA three-way junctions with good specificity, several other regular B-DNA forms, and Z-DNA. Multiple hydrophobic π-type interactions involving T and A bases appear to be important for B-form DNA binding, while phosphate O⋅⋅⋅Au interactions evidently underpin Z-DNA binding. The CNC ligand effectively stabilizes the AuIII ion, preventing reduction in the presence of glutathione. Both the redox stability and DNA affinity of the hit compound might be key factors underpinning its cytotoxicity in vitro.
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Affiliation(s)
| | - Cathryn A. Slabber
- Molecular Sciences InstituteSchool of ChemistryUniversity of the Witwatersrand2050JohannesburgSouth Africa
| | - Manuel A. Fernandes
- Molecular Sciences InstituteSchool of ChemistryUniversity of the Witwatersrand2050JohannesburgSouth Africa
| | - Daniël F. Joubert
- Department of PhysiologyUniversity of Pretoria0031PretoriaSouth Africa
| | - George Kleinhans
- Molecular Sciences InstituteSchool of ChemistryUniversity of the Witwatersrand2050JohannesburgSouth Africa
- Chemistry DepartmentUniversity of Pretoria0028PretoriaSouth Africa
| | - C. Johan van der Westhuizen
- Chemistry DepartmentUniversity of Pretoria0028PretoriaSouth Africa
- Future Production: ChemicalsPharmaceutical Technologies Research GroupCouncil for Scientific and Industrial Research (CSIR)0184PretoriaSouth Africa
| | - André Stander
- Department of PhysiologyUniversity of Pretoria0031PretoriaSouth Africa
| | - Orde Q. Munro
- Molecular Sciences InstituteSchool of ChemistryUniversity of the Witwatersrand2050JohannesburgSouth Africa
| | - Daniela I. Bezuidenhout
- Molecular Sciences InstituteSchool of ChemistryUniversity of the Witwatersrand2050JohannesburgSouth Africa
- Laboratory of Inorganic ChemistryEnvironmental and Chemical EngineeringUniversity of Oulu3000OuluFinland
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41
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Friães S, Realista S, Gomes CSB, Martinho PN, Veiros LF, Albrecht M, Royo B. Manganese complexes with chelating and bridging di-triazolylidene ligands: synthesis and reactivity. Dalton Trans 2021; 50:5911-5920. [PMID: 33949500 DOI: 10.1039/d1dt00444a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
New manganese complexes bearing di-triazolylidene (di-trz) ligands are described. Depending on the wingtip substituents of the triazolylidene ligand and the synthetic procedure, two different ligand coordination modes were observed, i.e, bridging and chelating. A series of Mn(i) complexes of the general type fac-[Mn(di-trzR)(CO)3Br] (R = Me, Et, Mes) with a chelating di-trz ligand were prepared via Ag-transmetalation. In contrast, the in situ deprotonation of the triazolium salts with KOBut yielded the bimetallic Mn(0) complexes [Mn2(CO)8(μ-di-trzR)] with a bridging di-trz ligand when short alkyl chains (Me, Et, i-Pr) are present as the N1 substituents of the triazolylidene ligand. The molecular structures of monometallic and bimetallic complexes were determined by X-ray diffraction studies. In addition, the cationic fac-[Mn(di-trzEt)(CO)2(PPh3)2]Br complex, a rare example of a dicarbonyl Mn(i) N-heterocyclic carbene, was obtained when fac-[Mn(di-trzEt)(CO)3Br] was irradiated with visible light in the presence of PPh3. The crystal structure revealed a slightly distorted octahedral geometry around the Mn(i) centre, with the chelating di-triazolylidene ligand situated in trans position to the two CO ligands in the equatorial plane, and the two phosphine ligands occupying the axial positions. Cyclic voltammetry studies show reversible redox processes for the monometallic Mn(i) complexes, and a quasi-reversible EC mechanism for the oxidation of the bimetallic complexes. Infrared spectroelectrochemical studies along with DFT calculations for fac-[Mn(di-trzEt)(CO)3Br] suggest that the observed two consecutive reductions both occur at the metal centre.
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Affiliation(s)
- Sofia Friães
- ITQB NOVA, Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal.
| | - Sara Realista
- ITQB NOVA, Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal.
| | - Clara S B Gomes
- LAQV- and UCIBIO-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Paulo N Martinho
- Biosystems and Integrative Sciences Institute (BioISI), Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Lisboa, 1749-016, Portugal
| | - Luis F Veiros
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Martin Albrecht
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
| | - Beatriz Royo
- ITQB NOVA, Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal.
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42
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Kiani P, Dodsworth ES, Lever ABP, Pietro WJ. Modeling ligand electrochemical parameters by repulsion-corrected eigenvalues. J Comput Chem 2021; 42:1236-1242. [PMID: 33870526 DOI: 10.1002/jcc.26536] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 02/22/2021] [Accepted: 03/25/2021] [Indexed: 12/27/2022]
Abstract
Ligand electrochemical parameters, EL , more commonly known as Lever parameters, have played a major research role in understanding redox processes involved in inorganic electrochemistry, enzymatic reactions, catalysis, solar cells, biochemistry, and materials science. Despite their broad usefulness, Lever parameters are not well understood at a first-principles level. Using density functional theory, we demonstrate in this contribution that a ligand's Lever parameter is fundamentally related to the ligand's ability to alter the eigenvalue of the electroactive spin-orbital in an octahedral transition metal complex. Our analysis furthers a first-principles understanding of the nature of Lever parameters.
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Affiliation(s)
- Pirouz Kiani
- Department of Chemistry, York University, Toronto, Ontario, Canada
| | | | - A B P Lever
- Department of Chemistry, York University, Toronto, Ontario, Canada
| | - William J Pietro
- Department of Chemistry, York University, Toronto, Ontario, Canada
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43
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Pinter P, Schüßlbauer CM, Watt FA, Dickmann N, Herbst-Irmer R, Morgenstern B, Grünwald A, Ullrich T, Zimmer M, Hohloch S, Guldi DM, Munz D. Bright luminescent lithium and magnesium carbene complexes. Chem Sci 2021; 12:7401-7410. [PMID: 34163830 PMCID: PMC8171342 DOI: 10.1039/d1sc00846c] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 04/15/2021] [Indexed: 11/21/2022] Open
Abstract
We report on the convenient synthesis of a CNC pincer ligand composed of carbazole and two mesoionic carbenes, as well as the corresponding lithium- and magnesium complexes. Mono-deprotonation affords a rare "naked" amide anion. In contrast to the proligand and its mono-deprotonated form, tri-deprotonated s-block complexes show bright luminescence, and their photophysical properties were therefore investigated by absorption- and luminescence spectroscopy. They reveal a quantum yield of 16% in solution at ambient temperature. Detailed quantum-chemical calculations assist in rationalizing the emissive properties based on an Intra-Ligand-Charge-Transfer (ILCT) between the carbazolido- and mesoionic carbene ligands. (Earth-)alkali metals prevent the distortion of the ligand following excitation and, thus, by avoiding non-radiative deactivation support bright luminescence.
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Affiliation(s)
- Piermaria Pinter
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg Egerlandstr. 1-3 D-91058 Erlangen Germany
| | - Christoph M Schüßlbauer
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg Egerlandstr. 1-3 D-91058 Erlangen Germany
- Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander University Erlangen-Nürnberg Egerlandstr. 3 D-91058 Erlangen Germany
| | - Fabian A Watt
- Department of Chemistry, Inorganic Chemistry, Paderborn University Warburger Straße 100 D-33098 Paderborn Germany
| | - Nicole Dickmann
- Department of Chemistry, Inorganic Chemistry, Paderborn University Warburger Straße 100 D-33098 Paderborn Germany
| | - Regine Herbst-Irmer
- University of Göttingen, Institute of Inorganic Chemistry Tammannstraße 4 D-37077 Göttingen Germany
| | - Bernd Morgenstern
- Inorganic Solid State Chemistry, Saarland University Campus C4.1 D-66123 Saarbrücken Germany
| | - Annette Grünwald
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg Egerlandstr. 1-3 D-91058 Erlangen Germany
- Inorganic Chemistry: Coordination Chemistry, Saarland University Campus C4.1 D-66123 Saarbrücken Germany
| | - Tobias Ullrich
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg Egerlandstr. 1-3 D-91058 Erlangen Germany
- Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander University Erlangen-Nürnberg Egerlandstr. 3 D-91058 Erlangen Germany
| | - Michael Zimmer
- Inorganic and General Chemistry, Saarland University Campus C4.1 D-66123 Saarbrücken Germany
| | - Stephan Hohloch
- Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck Innrain 80-82 A-6020 Innsbruck Austria
| | - Dirk M Guldi
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg Egerlandstr. 1-3 D-91058 Erlangen Germany
- Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander University Erlangen-Nürnberg Egerlandstr. 3 D-91058 Erlangen Germany
| | - Dominik Munz
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg Egerlandstr. 1-3 D-91058 Erlangen Germany
- Inorganic Chemistry: Coordination Chemistry, Saarland University Campus C4.1 D-66123 Saarbrücken Germany
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44
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Beerhues J, Neubrand M, Sobottka S, Neuman NI, Aberhan H, Chandra S, Sarkar B. Directed Design of a Au I Complex with a Reduced Mesoionic Carbene Radical Ligand: Insights from 1,2,3-Triazolylidene Selenium Adducts and Extensive Electrochemical Investigations. Chemistry 2021; 27:6557-6568. [PMID: 33502818 PMCID: PMC8252451 DOI: 10.1002/chem.202100105] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Indexed: 11/07/2022]
Abstract
Carbene-based radicals are important for both fundamental and applied chemical research. Herein, extensive electrochemical investigations of nine different 1,2,3-triazolylidene selenium adducts are reported. It is found that the half-wave potentials of the first reduction of the selones correlate with their calculated LUMO levels and the LUMO levels of the corresponding triazolylidene-based mesoionic carbenes (MICs). Furthermore, unexpected quasi-reversibility of the reduction of two triazoline selones, exhibiting comparable reduction potentials, was discovered. Through UV/Vis/NIR and EPR spectroelectrochemical investigations supported by DFT calculations, the radical anion was unambiguously assigned to be triazoline centered. This electrochemical behavior was transferred to a triazolylidene-type MIC-gold phenyl complex resulting in a MIC-radical coordinated AuI species. Apart from UV-Vis-NIR and EPR spectroelectrochemical investigations of the reduction, the reduced gold-coordinated MIC radical complex was also formed in situ in the bulk through chemical reduction. This is the first report of a monodentate triazolylidene-based MIC ligand that can be reduced to its anion radical in a metal complex. The results presented here provide design principles for stabilizing radicals based on MICs.
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Affiliation(s)
- Julia Beerhues
- Lehrstuhl für Anorganische KoordinationschemieInstitut für Anorganische ChemieUniversität StuttgartPfaffenwaldring 5570569StuttgartGermany
- Institut für Chemie und BiochemieFreie Universität BerlinFabeckstraße 34–3614195BerlinGermany
| | - Maren Neubrand
- Lehrstuhl für Anorganische KoordinationschemieInstitut für Anorganische ChemieUniversität StuttgartPfaffenwaldring 5570569StuttgartGermany
| | - Sebastian Sobottka
- Institut für Chemie und BiochemieFreie Universität BerlinFabeckstraße 34–3614195BerlinGermany
| | - Nicolás I. Neuman
- Lehrstuhl für Anorganische KoordinationschemieInstitut für Anorganische ChemieUniversität StuttgartPfaffenwaldring 5570569StuttgartGermany
| | - Hannes Aberhan
- Institut für Chemie und BiochemieFreie Universität BerlinFabeckstraße 34–3614195BerlinGermany
| | - Shubhadeep Chandra
- Lehrstuhl für Anorganische KoordinationschemieInstitut für Anorganische ChemieUniversität StuttgartPfaffenwaldring 5570569StuttgartGermany
| | - Biprajit Sarkar
- Lehrstuhl für Anorganische KoordinationschemieInstitut für Anorganische ChemieUniversität StuttgartPfaffenwaldring 5570569StuttgartGermany
- Institut für Chemie und BiochemieFreie Universität BerlinFabeckstraße 34–3614195BerlinGermany
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45
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Beerhues J, Walter RRM, Aberhan H, Neubrand M, Porré M, Sarkar B. Spotlight on Ligand Effects in 1,2,3-Triazolylidene Gold Complexes for Hydroamination Catalysis: Synthesis and Catalytic Application of an Activated MIC Gold Triflimide Complex and Various MIC Gold Chloride Complexes. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00057] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Julia Beerhues
- Lehrstuhl für Anorganische Koordinationschemie, Institut für Anorganische Chemie, Universität Stuttgart, D-70569 Stuttgart, Germany
- Institut für Chemie und Biochemie, Freie Universität Berlin, D-14195 Berlin, Germany
| | - Robert R. M. Walter
- Lehrstuhl für Anorganische Koordinationschemie, Institut für Anorganische Chemie, Universität Stuttgart, D-70569 Stuttgart, Germany
| | - Hannes Aberhan
- Institut für Chemie und Biochemie, Freie Universität Berlin, D-14195 Berlin, Germany
| | - Maren Neubrand
- Lehrstuhl für Anorganische Koordinationschemie, Institut für Anorganische Chemie, Universität Stuttgart, D-70569 Stuttgart, Germany
| | - Marre Porré
- Institut für Chemie und Biochemie, Freie Universität Berlin, D-14195 Berlin, Germany
| | - Biprajit Sarkar
- Lehrstuhl für Anorganische Koordinationschemie, Institut für Anorganische Chemie, Universität Stuttgart, D-70569 Stuttgart, Germany
- Institut für Chemie und Biochemie, Freie Universität Berlin, D-14195 Berlin, Germany
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46
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Maity R, Birenheide BS, Breher F, Sarkar B. Cooperative Effects in Multimetallic Complexes Applied in Catalysis. ChemCatChem 2021. [DOI: 10.1002/cctc.202001951] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Ramananda Maity
- Department of Chemistry University of Calcutta 92, A. P. C. Road Kolkata 700009 India
| | - Bernhard S. Birenheide
- Institute of Inorganic Chemistry Karlsruhe Institute of Technology (KIT) Engesserstr. 15 76131 Karlsruhe Germany
| | - Frank Breher
- Institute of Inorganic Chemistry Karlsruhe Institute of Technology (KIT) Engesserstr. 15 76131 Karlsruhe Germany
| | - Biprajit Sarkar
- Lehrstuhl für Anorganische Koordinationschemie Institut für Anorganische Chemie Universität Stuttgart Pfaffenwaldring 55 D 70569 Stuttgart Germany
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47
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Majumder A, Nath Saha T, Majumder N, Naskar R, Pal K, Maity R. Heterobimetallic Carbene Complexes Bearing Cyclometalated Ir
III
/Rh
III
and Mixed NHCPy/PPh
3
Coordinated Pd
II
Centers: Structures and Tandem Catalysis. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202001080] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Adhir Majumder
- Department of Chemistry University of Calcutta 92-APC Road Kolkata 700009 India
| | - Tarak Nath Saha
- Department of Chemistry University of Calcutta 92-APC Road Kolkata 700009 India
| | - Niladri Majumder
- Department of Chemistry University of Calcutta 92-APC Road Kolkata 700009 India
| | - Rajat Naskar
- Department of Chemistry University of Calcutta 92-APC Road Kolkata 700009 India
| | - Kuntal Pal
- Department of Chemistry University of Calcutta 92-APC Road Kolkata 700009 India
| | - Ramananda Maity
- Department of Chemistry University of Calcutta 92-APC Road Kolkata 700009 India
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48
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Sawaguchi D, Hayakawa S, Sakuma M, Niitsuma K, Kase D, Michii S, Ozawa M, Sakai Y, Sakamaki K, Ueyama K, Haraguchi R. Improved Synthesis of 1,2,3‐Triazolium Salts via Oxidative [3+2] Cycloaddition of Triazenes with Alkynes and Their Deprotonative Functionalization. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Daiki Sawaguchi
- Department of Applied Chemistry Faculty of Engineering Chiba Institute of Technology 2-17-1 Tsudanuma Narashino, Chiba 275-0016 Japan
| | - Shunsuke Hayakawa
- Department of Applied Chemistry Graduate School of Engineering Chiba Institute of Technology 2-17-1 Tsudanuma Narashino, Chiba 275-0016 Japan
| | - Masaaki Sakuma
- Department of Applied Chemistry Faculty of Engineering Chiba Institute of Technology 2-17-1 Tsudanuma Narashino, Chiba 275-0016 Japan
| | - Kenta Niitsuma
- Department of Applied Chemistry Faculty of Engineering Chiba Institute of Technology 2-17-1 Tsudanuma Narashino, Chiba 275-0016 Japan
| | - Daiya Kase
- Department of Applied Chemistry Faculty of Engineering Chiba Institute of Technology 2-17-1 Tsudanuma Narashino, Chiba 275-0016 Japan
| | - Shota Michii
- Department of Applied Chemistry Faculty of Engineering Chiba Institute of Technology 2-17-1 Tsudanuma Narashino, Chiba 275-0016 Japan
| | - Miyuki Ozawa
- Department of Applied Chemistry Faculty of Engineering Chiba Institute of Technology 2-17-1 Tsudanuma Narashino, Chiba 275-0016 Japan
| | - Yusuke Sakai
- Department of Applied Chemistry Faculty of Engineering Chiba Institute of Technology 2-17-1 Tsudanuma Narashino, Chiba 275-0016 Japan
| | - Kentaro Sakamaki
- Department of Applied Chemistry Faculty of Engineering Chiba Institute of Technology 2-17-1 Tsudanuma Narashino, Chiba 275-0016 Japan
| | - Kyohei Ueyama
- Department of Applied Chemistry Graduate School of Engineering Chiba Institute of Technology 2-17-1 Tsudanuma Narashino, Chiba 275-0016 Japan
| | - Ryosuke Haraguchi
- Department of Applied Chemistry Faculty of Engineering Chiba Institute of Technology 2-17-1 Tsudanuma Narashino, Chiba 275-0016 Japan
- Department of Applied Chemistry Graduate School of Engineering Chiba Institute of Technology 2-17-1 Tsudanuma Narashino, Chiba 275-0016 Japan
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49
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Franchino A, Montesinos-Magraner M, Echavarren AM. Silver-Free Catalysis with Gold(I) Chloride Complexes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20200358] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Allegra Franchino
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Marc Montesinos-Magraner
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Antonio M. Echavarren
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
- Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, C/Marcel·lí Domingo s/n, 43007 Tarragona, Spain
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50
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Hoyer C, Schwerk P, Suntrup L, Beerhues J, Nössler M, Albold U, Dernedde J, Tedin K, Sarkar B. Synthesis, Characterization, and Evaluation of Antibacterial Activity of Ferrocenyl‐1,2,3‐Triazoles, Triazolium Salts, and Triazolylidene Complexes of Gold(
i
) and Silver(
i
). Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100024] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Carolin Hoyer
- Institut für Chemie und Biochemie Freie Universität Berlin Fabeckstrasse 34–36 14195 Berlin Germany
| | - Peter Schwerk
- Institut für Mikrobiologie und Tierseuchen Freie Universität Berlin Robert-von-Ostertag-Str. 7–13 14163 Berlin Germany
| | - Lisa Suntrup
- Institut für Chemie und Biochemie Freie Universität Berlin Fabeckstrasse 34–36 14195 Berlin Germany
| | - Julia Beerhues
- Lehrstuhl für Anorganische Koordinationschemie Institut für Anorganische Chemie Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Maite Nössler
- Institut für Chemie und Biochemie Freie Universität Berlin Fabeckstrasse 34–36 14195 Berlin Germany
| | - Uta Albold
- Institut für Chemie und Biochemie Freie Universität Berlin Fabeckstrasse 34–36 14195 Berlin Germany
| | - Jens Dernedde
- Institut für Laboratoriumsmedizin Klinische Chemie und Pathobiochemie Charité-Universitätsmedizin Berlin Corporate member of Freie Universität Berlin Humboldt-Universität zu Berlin, and Berlin Institute of Health Augustenburger Platz 1 13353 Berlin Germany
| | - Karsten Tedin
- Institut für Mikrobiologie und Tierseuchen Freie Universität Berlin Robert-von-Ostertag-Str. 7–13 14163 Berlin Germany
| | - Biprajit Sarkar
- Institut für Chemie und Biochemie Freie Universität Berlin Fabeckstrasse 34–36 14195 Berlin Germany
- Lehrstuhl für Anorganische Koordinationschemie Institut für Anorganische Chemie Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
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