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Rall JM, Nork L, Engesser TA, Mayländer M, Weber S, Richert S, Krossing I. From the Iron Pentacarbonyl Cation to Heteroleptic η 6-arene Carbonyls and bis-η 6-arene Cations. Chemistry 2024; 30:e202400105. [PMID: 38299788 DOI: 10.1002/chem.202400105] [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: 01/31/2024] [Accepted: 02/01/2024] [Indexed: 02/02/2024]
Abstract
Partial ligand substitution at the iron pentacarbonyl radical cation generates novel half-sandwich complexes of the type [Fe(η6-arene)(CO)2]⋅+ (arene=1,3,5-tri-tert-butylbenzene, 1,3,5-trimethylbenzene, benzene and fluorobenzene). Of those, the bulkier 1,3,5-tri-tert-butylbenzene (mes*) derivative [Fe(mes*)(CO)2]⋅+ was fully characterized by XRD analysis, IR, NMR, cw-EPR, Mössbauer spectroscopy and cyclic voltammetry as the [Al(ORF)4]- (RF=C(CF3)3) salt. Chemical electronation, i. e., the single electron reduction, with decamethylferrocene generates neutral [Fe(mes*)(CO)2], whereas further deelectronation under CO-pressure leads to a dicationic three-legged [Fe(mes*)(CO)3]2+ salt with [Al(ORF)4]- counterion. The full substitution of the carbonyl ligands in [Fe(CO)5]⋅+[Al(ORF)4]- mainly resulted in disproportionation reactions, giving solid Fe(0) and the dicationic bis-arene salts [Fe(η6-arene)2]2+([Al(ORF)4]-)2 (arene=1,3,5-trimethylbenzene, benzene and fluorobenzene). Only by employing the very large fluoride bridged anion [F-{Al(ORF)3}2]-, it was possible to isolate an open shell bis-arene cation salt [Fe(C6H6)2]⋅+[F-{Al(ORF)3}2]-. The highly reactive cation was characterized by XRD analysis, cw-EPR, Mössbauer spectroscopy and cyclic voltammetry. The disproportionation of [Fe(C6H6)2]⋅+ salts to give solid Fe(0) and [Fe(C6H6)2]2+ salts was analyzed by a suitable cycle, revealing that the thermodynamic driving force for the disproportionation is a function of the size of the anion used and the polarity of the solvent.
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Affiliation(s)
- Jan M Rall
- Institut für Anorganische und Analytische Chemie und Freiburger Materialforschungszentrum (FMF), Albert-Ludwigs-Universität Freiburg, Albertstr. 21, 79104, Freiburg, Germany
| | - Leonie Nork
- Institut für Anorganische und Analytische Chemie und Freiburger Materialforschungszentrum (FMF), Albert-Ludwigs-Universität Freiburg, Albertstr. 21, 79104, Freiburg, Germany
| | - Tobias A Engesser
- Institut für Anorganische Chemie, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Straße 2, 24118, Kiel, Germany
| | - Maximilian Mayländer
- Institut für Physikalische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstr. 21, 79104, Freiburg, Germany
| | - Stefan Weber
- Institut für Physikalische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstr. 21, 79104, Freiburg, Germany
| | - Sabine Richert
- Institut für Physikalische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstr. 21, 79104, Freiburg, Germany
| | - Ingo Krossing
- Institut für Anorganische und Analytische Chemie und Freiburger Materialforschungszentrum (FMF), Albert-Ludwigs-Universität Freiburg, Albertstr. 21, 79104, Freiburg, Germany
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Widmann M, Riesinger C, Szlosek R, Balázs G, Scheer M. Electrophilic Functionalization of a Hexaphosphabenzene Ligand in [(Cp*Mo) 2(μ,η 6 : 6-P 6)]. Chemistry 2024; 30:e202304183. [PMID: 38240709 DOI: 10.1002/chem.202304183] [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: 12/15/2023] [Indexed: 04/06/2024]
Abstract
The electrophilic functionalization of the triple-decker sandwich complex [{Cp*Mo}2(μ,η6:6-P6)] (A) and its mono-oxidized counterpart [{Cp*Mo}2(μ,η6:6-P6)][SbF6] (B) with reactive main-group electrophiles as well as radical scavengers is shown to be a reliable method for the selective functionalization of the hexaphosphabenzene ligand. Depending on the electrophile used, the regioselectivity of the functionalization can be adjusted. Using group 16 electrophiles, the trisubstituted compounds [{Cp*Mo}2{(μ,η3 : 3-P3)(μ,η1 : 1 : 1 : 1-1,3-(SePh)2-2-Br-P3)}][TEF] (1), [{Cp*Mo}2(μ,η3 : 3-P3)(μ,η1 : 1 : 1 : 1-1,2,3-(EPh)3-P3)][SbF6] (E=S (2), Se (3)) as well as the side product [{Cp*Mo}2(μ,η4:4-P4)(μ,η1 : 1-P(SPh)2)][SbF6] (4) are obtained. By switching to phosphenium ions as group 15 electrophiles, the ring-inserted products [{Cp*Mo}2(μ,η3 : 3 : 2 : 2-P7R2)][TEF] (R=Cy (5), iPr (6)) are isolated, showing an unprecedented P7R2 structural motif. Furthermore, the reaction with MeOTf yields the dimeric [{Cp*Mo}4(1,4-Me2-μ4,η1 : 1 : 1 : 1 : 1 : 1-P6)(μ,η3 : 3-P3)2][TEF]2 (7) as the first example of a complex featuring two interconnected cyclo-P6 middle deck ligands. Finally, by combination of the methylation step with Ph2Se2, the mixed group 14/16 complex [{Cp*Mo}2{(μ,η3 : 3-P3)(μ,η1 : 1 : 1 : 11,2-(SePh)2-3-Me-P3)}][OTf] (8) is obtained.
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Affiliation(s)
- Maximilian Widmann
- Department of Inorganic Chemistry, University of Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany
| | - Christoph Riesinger
- Department of Inorganic Chemistry, University of Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany
| | - Robert Szlosek
- Department of Inorganic Chemistry, University of Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany
| | - Gábor Balázs
- Department of Inorganic Chemistry, University of Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany
| | - Manfred Scheer
- Department of Inorganic Chemistry, University of Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany
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Titova YY. Dynamic EPR Studies of the Formation of Catalytically Active Centres in Multicomponent Hydrogenation Systems. Catalysts 2023. [DOI: 10.3390/catal13040653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023] Open
Abstract
The formation of catalytically active nano-sized cobalt-containing structures in multicomponent hydrogenation systems based on Co(acac)2 complex and various cocatalysts, namely, AlEt3, AlEt2(OEt), Li-n-Bu, and (PhCH2)MgCl, has been studied for the first time in detail using dynamic EPR spectroscopy. It is shown that after mixing the initial components, paramagnetic structures are formed, which include a fragment containing Co(0) with the electronic configuration 3d9, as well as a fragment bearing an aluminium, lithium, or magnesium atom, depending on the nature of the used cocatalyst. Such bimetallic paramagnetic sites are stabilized by acetylacetonate ligands. In addition, the paramagnetic complex contains the arene molecule(s), and the cobalt atom is bonded with the atom of the corresponding non-transition through the alkyl group of the co-catalyst, in particular through the carbon atom in the α-position with respect to the atom of the non-transition element. Due to the high reactivity of the described intermediates, they, under the conditions of hydrogenation catalysis, are transformed into nano-sized cobalt-containing structures that act as carriers of the catalytically active sites. Furthermore, because of the high reactivity and paramagnetism, such intermediates can be detected only by the EPR technique. The paper describes the whole experimental way of interpreting the EPR signals corresponding to the intermediates, precursors of catalytically active structures. In addition, a possible mathematical model based on the obtained experimental EPR data is presented.
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Hierlmeier G, Tosatti P, Puentener K, Chirik PJ. Identification of Cyclohexadienyl Hydrides as Intermediates in Molybdenum-Catalyzed Arene Hydrogenation. Angew Chem Int Ed Engl 2023; 62:e202216026. [PMID: 36351208 DOI: 10.1002/anie.202216026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 11/08/2022] [Accepted: 11/09/2022] [Indexed: 11/11/2022]
Abstract
Treatment of phosphino(imino)pyridine (PIP) molybdenum cyclooctadiene (COD) complexes [(PIP)Mo(COD)] with dihydrogen in the presence of benzene selectively furnished the molybdenum cyclohexadienyl hydrides [(PIP)MoH(η5 -C6 H7 )], which are precatalysts for the hydrogenation of benzene to cyclohexane. [(PIP)MoH(η5 -C6 H7 )] arises from a rarely observed insertion of benzene into a molybdenum-hydride bond, a key step in the molybdenum-catalyzed homogeneous hydrogenation of arenes. The reaction with toluene afforded a single isomer of the corresponding molybdenum cyclohexadienyl hydride while para-xylene predominantly formed the molybdenum η6 -arene complex with the insertion product being a minor component. Addition of carbon monoxide to a cyclohexane-d12 solution of [(PIP)MoH(η5 -C6 H7 )] liberated cyclohexadiene, providing experimental support for a higher kinetic barrier for the subsequent steps en route to cycloalkanes.
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Affiliation(s)
| | - Paolo Tosatti
- Department of Process Chemistry & Catalysis, F. Hoffmann-La Roche Ltd., 4070, Basel, Switzerland
| | - Kurt Puentener
- Department of Process Chemistry & Catalysis, F. Hoffmann-La Roche Ltd., 4070, Basel, Switzerland
| | - Paul J Chirik
- Department of Chemistry, Princeton University, Princeton, NJ 08544, USA
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Schmitt M, Mayländer M, Heizmann T, Richert S, Bülow C, Hirsch K, Zamudio‐Bayer V, Lau JT, Krossing I. Isolation and Characterization of the Homoleptic Nickel(I) and Nickel(II) Bis‐benzene Sandwich Cations. Angew Chem Int Ed Engl 2022; 61:e202211555. [PMID: 36197000 PMCID: PMC10099793 DOI: 10.1002/anie.202211555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Indexed: 11/17/2022]
Abstract
A stable salt of the metalloradical [Ni(C6 H6 )2 ]+ hitherto unknown in the condensed phase was synthesized from [Ni(CO)4 ]+ [WCA]- and benzene ([WCA]- =[F{Al(ORF )3 }2 ]- ; RF =C(CF3 )3 ). Single crystal XRD reveals a remarkable asymmetrically η3 ,η6 -slipped sandwich structure. The magnetic properties of the [Ni(C6 H6 )2 ]+ cation were determined in solution and in the gas phase. Oxidation with the synergistic Ag+ /0.5 l2 system led to the salt [Ni(C6 H6 )2 ]2+ ([WCA]- )2 . All products were fully characterized by means of IR, Raman, NMR/EPR, single crystal and powder XRD.
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Affiliation(s)
- Manuel Schmitt
- Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF) Albert-Ludwigs-Universität Freiburg Albertstr. 21 79104 Freiburg Germany
| | - Maximilian Mayländer
- Institut für Physikalische Chemie Albert-Ludwigs-Universität Freiburg Albertstr. 21 79104 Freiburg Germany
| | - Tim Heizmann
- Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF) Albert-Ludwigs-Universität Freiburg Albertstr. 21 79104 Freiburg Germany
| | - Sabine Richert
- Institut für Physikalische Chemie Albert-Ludwigs-Universität Freiburg Albertstr. 21 79104 Freiburg Germany
| | - Christine Bülow
- Abteilung für Hochempfindliche Röntgenspektroskopie Helmholtz-Zentrum Berlin für Materialien und Energie Albert-Einstein-Straße 15 12489 Berlin Germany
- Physikalisches Institut Universität Freiburg Hermann-Herder-Straße 3 79104 Freiburg Germany
| | - Konstantin Hirsch
- Abteilung für Hochempfindliche Röntgenspektroskopie Helmholtz-Zentrum Berlin für Materialien und Energie Albert-Einstein-Straße 15 12489 Berlin Germany
| | - Vicente Zamudio‐Bayer
- Abteilung für Hochempfindliche Röntgenspektroskopie Helmholtz-Zentrum Berlin für Materialien und Energie Albert-Einstein-Straße 15 12489 Berlin Germany
| | - J. Tobias Lau
- Abteilung für Hochempfindliche Röntgenspektroskopie Helmholtz-Zentrum Berlin für Materialien und Energie Albert-Einstein-Straße 15 12489 Berlin Germany
- Physikalisches Institut Universität Freiburg Hermann-Herder-Straße 3 79104 Freiburg Germany
| | - Ingo Krossing
- Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF) Albert-Ludwigs-Universität Freiburg Albertstr. 21 79104 Freiburg Germany
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Li Y, Wu W, Zhu H, Kang Q, Xu L, Shi H. Rhodium‐Catalyzed Benzylic Addition Reactions of Alkylarenes to Michael Acceptors. Angew Chem Int Ed Engl 2022; 61:e202207917. [DOI: 10.1002/anie.202207917] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Yuntong Li
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province Department of Chemistry School of Science Westlake University 18 Shilongshan Road Hangzhou 310024, Zhejiang Province China
| | - Wen‐Qiang Wu
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province Department of Chemistry School of Science Westlake University 18 Shilongshan Road Hangzhou 310024, Zhejiang Province China
| | - Hui Zhu
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province Department of Chemistry School of Science Westlake University 18 Shilongshan Road Hangzhou 310024, Zhejiang Province China
| | - Qi‐Kai Kang
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province Department of Chemistry School of Science Westlake University 18 Shilongshan Road Hangzhou 310024, Zhejiang Province China
| | - Lun Xu
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province Department of Chemistry School of Science Westlake University 18 Shilongshan Road Hangzhou 310024, Zhejiang Province China
| | - Hang Shi
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province Department of Chemistry School of Science Westlake University 18 Shilongshan Road Hangzhou 310024, Zhejiang Province China
- Institute of Natural Sciences Westlake Institute for Advanced Study 18 Shilongshan Road Hangzhou 310024, Zhejiang Province China
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Murillo J, Bhowmick R, Harriman KLM, Gomez-Torres A, Wright J, Miró P, Metta-Magaña A, Murugesu M, Vlaisavljevich B, Fortier S. Actinide arene-metalates: 2. A neutral uranium bis(anthracenide) sandwich complex and elucidation of its electronic structure. Chem Commun (Camb) 2022; 58:9112-9115. [PMID: 35880486 DOI: 10.1039/d2cc03238d] [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
An unprecedented sandwich complex of the actinides is synthesized from the treatment of [UI2(HMPA)4]I (HMPA = OP(NMe2)3) (2) with 3 equiv. of K(C14H10) to give the neutral, bis(arenide) species U(η6-C14H10)(η4-C14H10)(HMPA)2 (1). Solid-state X-ray, SQUID magnetometry, and XANES analyses are consistent with tetravalent uranium supported by [C14H10]2- ligands. In one case, treatment of 1 with an equiv. of AgOTf led to the isolation of U(η6-C14H10)2(HMPA)(THF) (3), formed from ring migration and haptotropic rearrangement. Complete active space (CASSCF) calculations indicate the U-C bonding to solely consist of π-interactions, presenting a unique electronic structure distinct from classic actinide sandwich compounds.
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Affiliation(s)
- Jesse Murillo
- Department of Chemistry and Biochemistry, University of Texas at El Paso, El Paso, Texas 79968, USA.
| | - Rina Bhowmick
- Department of Chemistry, University of South Dakota, Vermillion, South Dakota 57069, USA.
| | - Katie L M Harriman
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Alejandra Gomez-Torres
- Department of Chemistry and Biochemistry, University of Texas at El Paso, El Paso, Texas 79968, USA.
| | - Joshua Wright
- Department of Physics, Illinois Institute of Technology, Chicago, IL, 60616, USA
| | - Pere Miró
- Department of Chemistry, University of South Dakota, Vermillion, South Dakota 57069, USA.
| | - Alejandro Metta-Magaña
- Department of Chemistry and Biochemistry, University of Texas at El Paso, El Paso, Texas 79968, USA.
| | - Muralee Murugesu
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Bess Vlaisavljevich
- Department of Chemistry, University of South Dakota, Vermillion, South Dakota 57069, USA.
| | - Skye Fortier
- Department of Chemistry and Biochemistry, University of Texas at El Paso, El Paso, Texas 79968, USA.
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Li Y, Wu W, Zhu H, Kang Q, Xu L, Shi H. Rhodium‐Catalyzed Benzylic Addition Reactions of Alkylarenes to Michael Acceptors. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207917] [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)
- Yuntong Li
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province Department of Chemistry School of Science Westlake University 18 Shilongshan Road Hangzhou 310024, Zhejiang Province China
| | - Wen‐Qiang Wu
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province Department of Chemistry School of Science Westlake University 18 Shilongshan Road Hangzhou 310024, Zhejiang Province China
| | - Hui Zhu
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province Department of Chemistry School of Science Westlake University 18 Shilongshan Road Hangzhou 310024, Zhejiang Province China
| | - Qi‐Kai Kang
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province Department of Chemistry School of Science Westlake University 18 Shilongshan Road Hangzhou 310024, Zhejiang Province China
| | - Lun Xu
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province Department of Chemistry School of Science Westlake University 18 Shilongshan Road Hangzhou 310024, Zhejiang Province China
| | - Hang Shi
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province Department of Chemistry School of Science Westlake University 18 Shilongshan Road Hangzhou 310024, Zhejiang Province China
- Institute of Natural Sciences Westlake Institute for Advanced Study 18 Shilongshan Road Hangzhou 310024, Zhejiang Province China
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Siebenmann L, Bolliger R, Braband H, Blacque O, Alberto R. Watching Hydrogens Migrate: Step by Step from [Re I(η 6-C 6H 6) 2] + to [Re III(η 3-C 6H 9)(η 6-C 6H 6)(NCCH 3) 2] 2. Inorg Chem 2022; 61:3683-3689. [PMID: 35168329 DOI: 10.1021/acs.inorgchem.1c03811] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Arene substitution reactions in [M(η6-arene)2]0/2+ are well documented for Groups 6 and 8 but are essentially unknown for the manganese triad. Aiming to replace benzene in [ReI(η6-C6H6)2]+, we altered the hapticity of one coordinated benzene, which we found to be tunable stepwise from an η6 to an η3-allyl coordination mode. Reduction of [ReI(η6-C6H6)2]+ with hydrides gives [ReI(η5-C6H7)(η6-C6H6)]. Subsequent addition of acid yields [ReIIIH(η5-C6H7)(η6-C6H6)]+, which converts to [ReI(η4-C6H8)(η6-C6H6)NCCH3]+ in acetonitrile. Further protonation gives the title complex [ReIII(η3-C6H9)(η6-C6H6)(NCCH3)2]2+ by a rhenium-mediated, intramolecular hydride shift. Herein, we present a full mechanistic elucidation of these transformations based on NMR studies, isolation of reaction intermediates, and their full characterizations. The structural feature {ReIII(η6-C6H6)} is unprecedented. Direct arene exchange from [ReI(η6-C6H6)2]+ to [ReI(η6-arene)(η6-C6H6)]+ was found only under strongly acidic conditions in neat arene. The analogous chemistry of the lighter homologue technetium (99Tc) is distinctly different. Treatment of [TcI(η5-C6H7)(η6-C6H6)] with acid in acetonitrile yields only mixtures of [TcI(η6-C6H6)2]+ and [TcII(NCCH3)6]2+.
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Affiliation(s)
- Lukas Siebenmann
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Robin Bolliger
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Henrik Braband
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Olivier Blacque
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Roger Alberto
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
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Wisofsky GK, Rojales K, Su X, Bartholome TA, Molino A, Kaur A, Wilson DJD, Dutton JL, Martin CD. Ligation of Boratabenzene and 9-Borataphenanthrene to Coinage Metals. Inorg Chem 2021; 60:18981-18989. [PMID: 34879201 DOI: 10.1021/acs.inorgchem.1c02800] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reactions of boratabenzene and borataphenanthrene anions with group 11 Ph3PMCl reagents furnished η2 coordination complexes, with the exception of the copper boratabenzene species that adopted an η6 mode. The binding of arene ligands to copper in an η6 manner is rare, and altering the ancillary ligand on copper to an N-heterocyclic carbene switched the binding of the boratabenzene to η2, indicating that such ligands are capable of vacating coordination sites. The η2 coordination complexes bind side-on, akin to olefins, via a borataalkene unit, although with the carbon atom much more proximal to the metal center than boron.
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Affiliation(s)
- Greta K Wisofsky
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, Texas 76798, United States
| | - Katherine Rojales
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, Texas 76798, United States
| | - Xiaojun Su
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, Texas 76798, United States
| | - Tyler A Bartholome
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, Texas 76798, United States
| | - Andrew Molino
- Department of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, Australia 3086
| | - Aishvaryadeep Kaur
- Department of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, Australia 3086
| | - David J D Wilson
- Department of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, Australia 3086
| | - Jason L Dutton
- Department of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, Australia 3086
| | - Caleb D Martin
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, Texas 76798, United States
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Nadeem Q, Battistin F, Blacque O, Alberto R. Naphthalene Exchange in [Re(η 6 -napht) 2 ] + with Pharmaceuticals Leads to Highly Functionalized Sandwich Complexes [M(η 6 -pharm) 2 ] + (M=Re/ 99m Tc). Chemistry 2021; 28:e202103566. [PMID: 34817903 PMCID: PMC9300139 DOI: 10.1002/chem.202103566] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Indexed: 01/07/2023]
Abstract
Bis‐arene sandwich complexes are generally prepared by the Fischer‐Hafner reaction, which conditions are incompatible with most O‐ and N‐ functional groups. We report a new way for the synthesis of sandwich type complexes [Re(η6‐arene)2]+ and [Re(η6‐arene)(η6‐benzene)]+ from [Re(η6‐napht)2]+ and [Re(η6‐napht)(η6‐benzene)]+, with functionalized arenes and pharmaceuticals. N‐methylpyrrolidine (NMP) facilitates the substitution of naphthalene with the incoming arene. A series of fully characterized rhenium sandwich complexes with simple arenes, such as aniline, as well as with active compounds like lidocaine and melatonin are presented. With these rhenium compounds in hand, the radioactive sandwich complexes [99mTc(η6‐pharm)2]+ (pharm=pharmaceutical) can be unambiguously confirmed. The direct labelling of pharmaceuticals with 99mTc through η6‐coordination to phenyl rings and the confirmation of the structures with the rhenium homologues opens a path into molecular theranostics.
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Affiliation(s)
- Qaisar Nadeem
- Department of Chemistry, University of Zurich, Winterthurerstr. 190, 8057, Zurich, Switzerland
| | - Federica Battistin
- Department of Chemistry, University of Zurich, Winterthurerstr. 190, 8057, Zurich, Switzerland
| | - Olivier Blacque
- Department of Chemistry, University of Zurich, Winterthurerstr. 190, 8057, Zurich, Switzerland
| | - Roger Alberto
- Department of Chemistry, University of Zurich, Winterthurerstr. 190, 8057, Zurich, Switzerland
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12
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Murillo J, Bhowmick R, Harriman KLM, Gomez-Torres A, Wright J, Meulenberg RW, Miró P, Metta-Magaña A, Murugesu M, Vlaisavljevich B, Fortier S. Actinide arene-metalates: ion pairing effects on the electronic structure of unsupported uranium-arenide sandwich complexes. Chem Sci 2021; 12:13360-13372. [PMID: 34777754 PMCID: PMC8528047 DOI: 10.1039/d1sc03275e] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 09/09/2021] [Indexed: 11/21/2022] Open
Abstract
Addition of [UI2(THF)3(μ-OMe)]2·THF (2·THF) to THF solutions containing 6 equiv. of K[C14H10] generates the heteroleptic dimeric complexes [K(18-crown-6)(THF)2]2[U(η6-C14H10)(η4-C14H10)(μ-OMe)]2·4THF (118C6·4THF) and {[K(THF)3][U(η6-C14H10)(η4-C14H10)(μ-OMe)]}2 (1THF) upon crystallization of the products in THF in the presence or absence of 18-crown-6, respectively. Both 118C6·4THF and 1THF are thermally stable in the solid-state at room temperature; however, after crystallization, they become insoluble in THF or DME solutions and instead gradually decompose upon standing. X-ray diffraction analysis reveals 118C6·4THF and 1THF to be structurally similar, possessing uranium centres sandwiched between bent anthracenide ligands of mixed tetrahapto and hexahapto ligation modes. Yet, the two complexes are distinguished by the close contact potassium-arenide ion pairing that is seen in 1THF but absent in 118C6·4THF, which is observed to have a significant effect on the electronic characteristics of the two complexes. Structural analysis, SQUID magnetometry data, XANES spectral characterization, and computational analyses are generally consistent with U(iv) formal assignments for the metal centres in both 118C6·4THF and 1THF, though noticeable differences are detected between the two species. For instance, the effective magnetic moment of 1THF (3.74 μB) is significantly lower than that of 118C6·4THF (4.40 μB) at 300 K. Furthermore, the XANES data shows the U LIII-edge absorption energy for 1THF to be 0.9 eV higher than that of 118C6·4THF, suggestive of more oxidized metal centres in the former. Of note, CASSCF calculations on the model complex {[U(η6-C14H10)(η4-C14H10)(μ-OMe)]2}2− (1*) shows highly polarized uranium–arenide interactions defined by π-type bonds where the metal contributions are primarily comprised by the 6d-orbitals (7.3 ± 0.6%) with minor participation from the 5f-orbitals (1.5 ± 0.5%). These unique complexes provide new insights into actinide–arenide bonding interactions and show the sensitivity of the electronic structures of the uranium atoms to coordination sphere effects. Use of Chatt metal-arene protocols with uranium leads to the synthesis of the first well-characterized, unsupported actinide–arenide sandwich complexes. The electronic structures of the actinide centres show a key sensitivity to ion pairing effects.![]()
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Affiliation(s)
- Jesse Murillo
- Department of Chemistry and Biochemistry, University of Texas at El Paso El Paso Texas 79968 USA
| | - Rina Bhowmick
- Department of Chemistry, University of South Dakota Vermillion South Dakota 57069 USA
| | - Katie L M Harriman
- Department of Chemistry and Biomolecular Sciences, University of Ottawa Ottawa Ontario K1N 6N5 Canada
| | - Alejandra Gomez-Torres
- Department of Chemistry and Biochemistry, University of Texas at El Paso El Paso Texas 79968 USA
| | - Joshua Wright
- Department of Physics, Illinois Institute of Technology Chicago Illinois 60616 USA
| | - Robert W Meulenberg
- Department of Physics and Astronomy and Frontier Institute for Research in Sensor Technologies, University of Maine Orono Maine 04469 USA
| | - Pere Miró
- Department of Chemistry, University of South Dakota Vermillion South Dakota 57069 USA
| | - Alejandro Metta-Magaña
- Department of Chemistry and Biochemistry, University of Texas at El Paso El Paso Texas 79968 USA
| | - Muralee Murugesu
- Department of Chemistry and Biomolecular Sciences, University of Ottawa Ottawa Ontario K1N 6N5 Canada
| | - Bess Vlaisavljevich
- Department of Chemistry, University of South Dakota Vermillion South Dakota 57069 USA
| | - Skye Fortier
- Department of Chemistry and Biochemistry, University of Texas at El Paso El Paso Texas 79968 USA
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13
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Yu R, Xu S, Wang MH, Yang T, Cui ZH. Metallocene: multi-layered molecular rotors. Dalton Trans 2021; 50:14156-14162. [PMID: 34549756 DOI: 10.1039/d1dt02291a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The electronic and structural prerequisites for a multi-layered molecular rotor have been demonstrated herein in terms of nine 18-valence-electron metallocene sandwich complexes. First, the lack of strong covalent bonds between layers is a key issue to obtain a barrier-free rotation of one layer relative to other layers, where the considerable energetic but unidirectional (such as electrostatic interactions) interactions are needed between layers to keep the structural integrity against fragment separation and structural distortion in a rotation process. Second, one or more layers should possess continuous and delocalized π electron clouds to provide a driving force for the barrier-free rotation. More importantly, besides a negligible rotation barrier, the reasonable rotational period associated with the ultra-soft rotation mode is a critical point for the observability of dynamical behavior in multi-layered molecular rotors.
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Affiliation(s)
- Rui Yu
- Institute of Atomic and Molecular Physics, Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), Jilin University, Changchun 130023, China.
| | - Song Xu
- Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter (Ministry of Education), School of Physics, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Meng-Hui Wang
- Institute of Atomic and Molecular Physics, Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), Jilin University, Changchun 130023, China.
| | - Tao Yang
- Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter (Ministry of Education), School of Physics, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Zhong-Hua Cui
- Institute of Atomic and Molecular Physics, Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), Jilin University, Changchun 130023, China. .,Beijing National Laboratory for Molecular Sciences, China
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14
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Abstract
Baird's rule predicts that molecules with 4n π electrons should be aromatic in the triplet state, but the realization of simple ring systems with such an electronic ground state has been stymied by these molecules' tendency to distort into structures bearing a large singlet-triplet gap. Here, we show that the elusive benzene diradical dianion can be stabilized through creation of a binucleating ligand that enforces a tightly constrained inverse sandwich structure and direct magnetic exchange coupling. Specifically, we report the compounds [K(18-crown-6)(THF)2]2[M2(BzN6-Mes)] (M = Y, Gd; BzN6-Mes = 1,3,5-tris[2',6'-(N-mesityl)dimethanamino-4'-tert-butylphenyl]benzene), which feature a trigonal ligand that binds one trivalent metal ion on each face of a central benzene dianion. Antiferromagnetic exchange in the Gd3+ compound preferentially stabilizes the triplet state such that it becomes the molecular ground state. Single-crystal X-ray diffraction data and nucleus-independent chemical shift calculations support aromaticity, in agreement with Baird's rule.
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15
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Abstract
Although the application of arene-osmium(II) complexes in homogeneous catalysis has been much less studied than that of their ruthenium analogues, different works have shown that, in some instances, a comparable or even superior effectiveness can be achieved with this particular class of compounds. This review article focuses on the catalytic applications of arene-osmium(II) complexes. Among others, transfer hydrogenation, hydrogenation, oxidation, and nitrile hydration reactions, as well as different C-C bond forming processes, are comprehensively discussed.
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16
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Gotzmann C, Blacque O, Fox T, Alberto R. [Re(η
6
‐C
6
H
5
‐benzimidazole)
2
]
+
and Derivatives as Dye Mimics; Synthesis, UV Absorption Studies and DFT Calculations. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Carla Gotzmann
- Department of Chemistry University of Zurich Winterthurerstrasse 190 8057 Zurich Switzerland
| | - Olivier Blacque
- Department of Chemistry University of Zurich Winterthurerstrasse 190 8057 Zurich Switzerland
| | - Thomas Fox
- Department of Chemistry University of Zurich Winterthurerstrasse 190 8057 Zurich Switzerland
| | - Roger Alberto
- Department of Chemistry University of Zurich Winterthurerstrasse 190 8057 Zurich Switzerland
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17
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Douvris C. Synthesis and characterization of the first η6-arene trifluoromethyl transition-metal complex. J Fluor Chem 2021. [DOI: 10.1016/j.jfluchem.2021.109755] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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18
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Williams LJ, Bhonoah Y, Wilkinson LA, Walton JW. As Nice as π: Aromatic Reactions Activated by π-Coordination to Transition Metals. Chemistry 2021; 27:3650-3660. [PMID: 33210827 PMCID: PMC7986375 DOI: 10.1002/chem.202004621] [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: 10/19/2020] [Revised: 11/18/2020] [Indexed: 11/09/2022]
Abstract
π‐Coordination of aromatic molecules to metals dramatically alters their reactivity. For example, coordinated carbons become more electrophilic and C−H bonds of coordinated rings become more acidic. For many years, this change in reactivity has been used to trigger reactions that would not take place for uncoordinated arenes, however, there has been a recent resurgence in use of this technique, in part due to the development of catalytic reactions in which π‐coordination is transient. In this Minireview, we describe the key reaction chemistry of arenes coordinated to a range of transition metals, including stereoselective reactions and industrially relevant syntheses. We also summarise outstanding examples of catalytic processes. Finally, we give perspectives on the future direction of the field, with respect to both reactions that are stoichiometric in activating metals and those employing catalytic metal.
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Affiliation(s)
- Luke J Williams
- Department of Chemistry, Durham University, South Road, Durham, DH1 3LE, UK
| | - Yunas Bhonoah
- Syngenta, Jealott's Hill International Research Centre Bracknell, Berkshire, RG42 6EY, UK
| | - Luke A Wilkinson
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK
| | - James W Walton
- Department of Chemistry, Durham University, South Road, Durham, DH1 3LE, UK
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19
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Unkrig W, Zhe F, Tamim R, Oesten F, Kratzert D, Krossing I. Cationic Niobium-Sandwich and Piano-Stool Complexes. Chemistry 2021; 27:758-765. [PMID: 32871041 PMCID: PMC7839738 DOI: 10.1002/chem.202003748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 08/31/2020] [Indexed: 11/08/2022]
Abstract
The syntheses of the homoleptic bis(arene) niobium cations [Nb(arene)2 ]+ (arene = C6 H3 Me3 , C6 H5 Me) with 16 valence electrons and heteroleptic arene-carbonyl cations [(CO)Nb(arene)2 ]+ (arene = C6 H3 Me3 , C6 H5 Me) and [(arene)M(CO)4 ]+ (arene = C6 H3 Me3 , C6 H6 ) obeying 18 valence electrons are described. Stabilization of these complexes was achieved by using the weakly coordinating anions [Al(ORF )4 ]- or [F{Al(ORF )3 }2 ]- (RF = C(CF3 )3 ). The limits of two synthesis routes starting from neutral Nb(arene)2 (arene = C6 H3 Me3 , C6 H5 Me) or [NEt4 ][M(CO)6 ] (M = Nb, Ta) were investigated. All compounds were analyzed by single crystal X-ray determination, vibrational and NMR spectroscopy. DFT calculations were executed to support the experimental data.
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Affiliation(s)
- Wiebke Unkrig
- Institut für Anorganische und Analytische ChemieAlbert-Ludwigs-Universität FreiburgAlbertstrasse 2179104FreiburgGermany
| | - Fu Zhe
- Institut für Anorganische und Analytische ChemieAlbert-Ludwigs-Universität FreiburgAlbertstrasse 2179104FreiburgGermany
| | - Razan Tamim
- Institut für Anorganische und Analytische ChemieAlbert-Ludwigs-Universität FreiburgAlbertstrasse 2179104FreiburgGermany
| | - Friederike Oesten
- Institut für Anorganische und Analytische ChemieAlbert-Ludwigs-Universität FreiburgAlbertstrasse 2179104FreiburgGermany
| | - Daniel Kratzert
- Institut für Anorganische und Analytische ChemieAlbert-Ludwigs-Universität FreiburgAlbertstrasse 2179104FreiburgGermany
| | - Ingo Krossing
- Institut für Anorganische und Analytische ChemieAlbert-Ludwigs-Universität FreiburgAlbertstrasse 2179104FreiburgGermany
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20
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Schultz FA, Lord RL, Baik MH. Multifaceted examination of multielectron transfer reactions. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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21
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Neumeier M, Chakraborty U, Schaarschmidt D, de la Pena O'Shea V, Perez‐Ruiz R, Jacobi von Wangelin A. Combined Photoredox and Iron Catalysis for the Cyclotrimerization of Alkynes. Angew Chem Int Ed Engl 2020; 59:13473-13478. [PMID: 32190960 PMCID: PMC7496134 DOI: 10.1002/anie.202000907] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Indexed: 11/11/2022]
Abstract
Successful combinations of visible-light photocatalysis with metal catalysis have recently enabled the development of hitherto unknown chemical reactions. Dual mechanisms from merging metal-free photocatalysts and earth-abundant metal catalysts are still in their infancy. We report a photo-organo-iron-catalyzed cyclotrimerization of alkynes by photoredox activation of a ligand-free Fe catalyst. The reaction operates under very mild conditions (visible light, 20 °C, 1 h) with 1-2 mol % loading of the three catalysts (dye, amine, FeCl2 ).
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Affiliation(s)
- Michael Neumeier
- Department of ChemistryUniversity of HamburgMartin Luther King Pl 620146HamburgGermany
| | - Uttam Chakraborty
- Department of ChemistryUniversity of HamburgMartin Luther King Pl 620146HamburgGermany
| | - Dieter Schaarschmidt
- Department of ChemistryUniversity of HamburgMartin Luther King Pl 620146HamburgGermany
| | | | - Raul Perez‐Ruiz
- Photoactivated ProcessesIMDEA Energy InstituteRamin de la Sagra 328935MistolesSpain
- Departamento de QuímicaUniversitat Politècnica de ValènciaCamino de Vera s/n46022ValenciaSpain
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22
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Essex LA, McSkimming A, Thompson NB, Kelty ML, Hill EA, Harman WH. η2-Arene Binding at High-Spin Fe(I) Enabled by a Sterically Accommodating Tris(pyrazolyl)hydroborate Ligand. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00340] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Laura A. Essex
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Alex McSkimming
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Niklas B. Thompson
- Massachusetts Institute of Technology, 32 Vassar Street, Cambridge, Massachusetts 02139, United States
| | - Margaret L. Kelty
- University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637, United States
| | - Ethan A. Hill
- University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637, United States
| | - W. Hill Harman
- Department of Chemistry, University of California, Riverside, California 92521, United States
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23
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Neumeier M, Chakraborty U, Schaarschmidt D, Pena O'Shea V, Perez‐Ruiz R, Jacobi von Wangelin A. Combined Photoredox and Iron Catalysis for the Cyclotrimerization of Alkynes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202000907] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Michael Neumeier
- Department of Chemistry University of Hamburg Martin Luther King Pl 6 20146 Hamburg Germany
| | - Uttam Chakraborty
- Department of Chemistry University of Hamburg Martin Luther King Pl 6 20146 Hamburg Germany
| | - Dieter Schaarschmidt
- Department of Chemistry University of Hamburg Martin Luther King Pl 6 20146 Hamburg Germany
| | - Victor Pena O'Shea
- Photoactivated Processes IMDEA Energy Institute Ramin de la Sagra 3 28935 Mistoles Spain
| | - Raul Perez‐Ruiz
- Photoactivated Processes IMDEA Energy Institute Ramin de la Sagra 3 28935 Mistoles Spain
- Departamento de Química Universitat Politècnica de València Camino de Vera s/n 46022 Valencia Spain
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24
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25
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Hernández-Valdés D, Avignon F, Müller P, Meola G, Probst B, Fox T, Spingler B, Alberto R. [Re(η 6-arene) 2] + as a highly stable ferrocene-like scaffold for ligands and complexes. Dalton Trans 2020; 49:5250-5256. [PMID: 32242190 DOI: 10.1039/d0dt00731e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ferrocenes are versatile ligand scaffolds, complexes of which have found numerous applications in catalysis. Structurally similar but of higher redox stabilites are sandwich complexes of the [Re(η6-arene)2]+ type. We report herein routes for conjugating potential ligands to a single or to both arenes in this scaffold. Since the arene rings can freely rotate, the [Re(η6-arene)2]+ has a high degree of structural flexibility. Polypyridyl ligands were successfully introduced. The coordination of Co(ii) to such a model tetrapyridyl-Re(i)-bis-benzene complex produced a bimetallic Re(i)-Co(ii) complex. To show the stability of the resulting architecture, a selected complex was subjected to photocatalytic reactions. It showed good activity in proton reduction over a long time and did not decompose, corroborating its extraordinary stability even under light irradiation. Its activity compares well with the parent catalyst in turn over numbers and frequencies. The supply of electrons limits catalytic turnover frequency at concentrations below ∼10 μM. We also show that other ligands can be introduced along these strategies. The great diversity offered by [Re(η6-arene)2]+ sandwich complexes from a synthetic point allows this concept to be extended to other catalytic processes, comparable to ferrocenes.
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Affiliation(s)
- Daniel Hernández-Valdés
- Department of Chemistry, University of Zurich, Winterthurerstr. 190, CH-8057 Zurich, Switzerland.
| | - Frédéric Avignon
- Department of Chemistry, University of Zurich, Winterthurerstr. 190, CH-8057 Zurich, Switzerland. and Département de Chimie, École Normale Supérieure, PSL Research University, 75005 Paris, France
| | - Peter Müller
- Department of Chemistry, University of Zurich, Winterthurerstr. 190, CH-8057 Zurich, Switzerland.
| | - Giuseppe Meola
- Department of Chemistry, University of Zurich, Winterthurerstr. 190, CH-8057 Zurich, Switzerland.
| | - Benjamin Probst
- Department of Chemistry, University of Zurich, Winterthurerstr. 190, CH-8057 Zurich, Switzerland.
| | - Thomas Fox
- Department of Chemistry, University of Zurich, Winterthurerstr. 190, CH-8057 Zurich, Switzerland.
| | - Bernhard Spingler
- Department of Chemistry, University of Zurich, Winterthurerstr. 190, CH-8057 Zurich, Switzerland.
| | - Roger Alberto
- Department of Chemistry, University of Zurich, Winterthurerstr. 190, CH-8057 Zurich, Switzerland.
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26
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Nadeem Q, Meola G, Braband H, Bolliger R, Blacque O, Hernández‐Valdés D, Alberto R. To Sandwich Technetium: Highly Functionalized Bis‐Arene Complexes [
99m
Tc(η
6
‐arene)
2
]
+
Directly from Water and [
99m
TcO
4
]
−. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201912994] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Qaisar Nadeem
- Department of Chemistry University of Zurich Winterthurerstr. 190 8057 Zurich Switzerland
| | - Giuseppe Meola
- Department of Chemistry University of Zurich Winterthurerstr. 190 8057 Zurich Switzerland
| | - Henrik Braband
- Department of Chemistry University of Zurich Winterthurerstr. 190 8057 Zurich Switzerland
| | - Robin Bolliger
- Department of Chemistry University of Zurich Winterthurerstr. 190 8057 Zurich Switzerland
| | - Olivier Blacque
- Department of Chemistry University of Zurich Winterthurerstr. 190 8057 Zurich Switzerland
| | | | - Roger Alberto
- Department of Chemistry University of Zurich Winterthurerstr. 190 8057 Zurich Switzerland
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27
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Parvin N, Hossain J, George A, Parameswaran P, Khan S. N-heterocyclic silylene stabilized monocordinated copper(i)–arene cationic complexes and their application in click chemistry. Chem Commun (Camb) 2020; 56:273-276. [DOI: 10.1039/c9cc09115g] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Herein, we report N-heterocyclic silylene and N-heterocyclic carbene supported monocoordinated cationic Cu(i) complexes with unsymmetrical arenes (toluene and m-xylene], their reactivity and catalytic application in CuAAC reactions.
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Affiliation(s)
- Nasrina Parvin
- Department of Chemistry
- Indian Institute of Science Education and Research Pune
- Pune-411008
- India
| | - Jabed Hossain
- Department of Chemistry
- Indian Institute of Science Education and Research Pune
- Pune-411008
- India
| | - Anjana George
- Department of Chemistry
- National Institute of Technology Calicut
- Calicut – 673601
- India
| | - Pattiyil Parameswaran
- Department of Chemistry
- National Institute of Technology Calicut
- Calicut – 673601
- India
| | - Shabana Khan
- Department of Chemistry
- Indian Institute of Science Education and Research Pune
- Pune-411008
- India
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28
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Nadeem Q, Meola G, Braband H, Bolliger R, Blacque O, Hernández‐Valdés D, Alberto R. To Sandwich Technetium: Highly Functionalized Bis‐Arene Complexes [
99m
Tc(η
6
‐arene)
2
]
+
Directly from Water and [
99m
TcO
4
]
−. Angew Chem Int Ed Engl 2019; 59:1197-1200. [DOI: 10.1002/anie.201912994] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Indexed: 12/22/2022]
Affiliation(s)
- Qaisar Nadeem
- Department of Chemistry University of Zurich Winterthurerstr. 190 8057 Zurich Switzerland
| | - Giuseppe Meola
- Department of Chemistry University of Zurich Winterthurerstr. 190 8057 Zurich Switzerland
| | - Henrik Braband
- Department of Chemistry University of Zurich Winterthurerstr. 190 8057 Zurich Switzerland
| | - Robin Bolliger
- Department of Chemistry University of Zurich Winterthurerstr. 190 8057 Zurich Switzerland
| | - Olivier Blacque
- Department of Chemistry University of Zurich Winterthurerstr. 190 8057 Zurich Switzerland
| | | | - Roger Alberto
- Department of Chemistry University of Zurich Winterthurerstr. 190 8057 Zurich Switzerland
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29
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Tang Y, Zhao Y, Wang G, Li N. M(C6H6R)2 (R = BH, Be; M = Cr, Mo, W): Transition-metal sandwich complexes with η7-coordination borepin and beryllepin: A DFT study. COMPUT THEOR CHEM 2019. [DOI: 10.1016/j.comptc.2019.112562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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30
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Kucera BE, Roberts CJ, Young VG, Brennessel WW, Ellis JE. Niobium isocyanide complexes, Nb(CNAr) 6, with Ar = 2,6-dimethylphenyl (Xyl), a diamagnetic dimer containing four reductively coupled isocyanides, and Ar = 2,6-diisopropylphenyl (Dipp), a paramagnetic monomer analogous to the highly unstable hexacarbonylniobium(0). ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2019; 75:1259-1265. [PMID: 31484814 DOI: 10.1107/s205322961901101x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 08/07/2019] [Indexed: 11/10/2022]
Abstract
Treatment of bis(mesitylene)niobium(0) with 6-7 equivalents of 2,6-dimethylphenyl isocyanide (CNXyl) affords two products with the empirical formula Nb(CNXyl)n (n = 7 or 6), which have been shown to be the diamagnetic dimers bis[μ-N,N',N'',N'''-tetrakis(2,6-dimethylphenyl)squaramidinato(2-)]bis[pentakis(2,6-dimethylphenyl isocyanide)niobium(I)], [Nb2(C9H9N)10(C36H36N4)] or [Nb(CNXyl)5]2[μ-C4(NXyl)4]·xSolvent, 1, and bis[μ-N,N',N'',N'''-tetrakis(2,6-dimethylphenyl)squaramidinato(2-)]bis[tetrakis(2,6-dimethylphenyl isocyanide)niobium(I)] tetrahydrofuran trisolvate, [Nb2(C9H9N)8(C36H36N4)]·3C4H8O or [Nb(CNXyl)4]2[μ-C4(NXyl)4]·3THF (THF = tetrahydrofuran), 2. Each contains NbI bound to either five or four terminal isocyanides, respectively, and to an unprecedented bridging tetraarylsquaramidinate(2-) unit, coordinated as a bidentate ligand to each niobium center, symmetrically due to the crystallographic inversion center that coincides with the centroid of the central C4 unit. Thus, in the presence of CNXyl, the bis(mesitylene)niobium(0) is oxidized to niobium(I), resulting in the facile loss of both mesitylene groups and the reductive coupling of two CNXyl groups per niobium to provide the first examples of tetraarylsquaramidinate(2-) ligands, [cyclo-C4N4Ar4]2-, coordinated to metals. In contrast, bis(mesitylene)niobium(0) reacts with the more crowded 2,6-diisopropylphenyl isocyanide (CNDipp) to afford the paramagnetic monomer hexakis(2,6-diisopropylphenyl isocyanide)niobium(0), [Nb(C13H17N)6] or Nb(CNDipp)6, 3, the first zero-valent niobium isocyanide analog of the highly unstable Nb(CO)6, which is presently only known to exist in an argon matrix at 4.2 K.
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Affiliation(s)
- Benjamin E Kucera
- Department of Chemistry, University of Minnesota, Minneapolis, MN 55455, USA
| | | | - Victor G Young
- Department of Chemistry, University of Minnesota, Minneapolis, MN 55455, USA
| | | | - John E Ellis
- Department of Chemistry, University of Minnesota, Minneapolis, MN 55455, USA
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31
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Nandhini R, Venkatachalam G. Half-sandwich ruthenium(II) complexes containing O, N bidentate azo ligands: Synthesis, structure and their catalytic activity towards one-pot conversion of aldehydes to primary amides and transfer hydrogenation of ketones. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.05.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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32
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A. Katkova S, S. Mikherdov A, A. Kinzhalov M, S. Novikov A, A. Zolotarev A, Boyarskiy VP, Kukushkin VY. (Isocyano Group π‐Hole)⋅⋅⋅[d‐M
II
] Interactions of (Isocyanide)[M
II
] Complexes, in which Positively Charged Metal Centers (d
8
‐M=Pt, Pd) Act as Nucleophiles. Chemistry 2019; 25:8590-8598. [DOI: 10.1002/chem.201901187] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Indexed: 12/31/2022]
Affiliation(s)
- Svetlana A. Katkova
- Saint Petersburg State University Universitetskaya Nab., 7/9 Saint Petersburg Russian Federation
| | - Alexander S. Mikherdov
- Saint Petersburg State University Universitetskaya Nab., 7/9 Saint Petersburg Russian Federation
| | - Mikhail A. Kinzhalov
- Saint Petersburg State University Universitetskaya Nab., 7/9 Saint Petersburg Russian Federation
| | - Alexander S. Novikov
- Saint Petersburg State University Universitetskaya Nab., 7/9 Saint Petersburg Russian Federation
| | - Andrey A. Zolotarev
- Saint Petersburg State University Universitetskaya Nab., 7/9 Saint Petersburg Russian Federation
| | - Vadim P. Boyarskiy
- Saint Petersburg State University Universitetskaya Nab., 7/9 Saint Petersburg Russian Federation
| | - Vadim Yu. Kukushkin
- Saint Petersburg State University Universitetskaya Nab., 7/9 Saint Petersburg Russian Federation
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33
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Labrum NS, Losovyj Y, Caulton KG. A new access route to dimetal sandwich complexes, including a radical anion. Chem Commun (Camb) 2018; 54:12397-12399. [PMID: 30328415 DOI: 10.1039/c8cc05204b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The amide in Cr[N(SiMe3)2]2(THF)2 is displaced by equimolar [K(18-crown-6)][naphthalene] to form the dimetal sandwich Cr2(naphthalene)2- as a radical anion paired with [K(18-crown-6)]+. Two Cr atoms in the sandwich do not form any multiple Cr/Cr bonds, and instead each interacts with one naphthalene in an η6 fashion and with the second naphthalene in an η4 connectivity mode. The naphthalene C/C distances show the effect of back donation from two chromium atoms to a greater extent than simply by 1 electron ring reduction, in comparison to the naphthalene radical anion. The SOMO of the product was established by variable temperature EPR spectroscopy, and the atom ratios and elemental purity were supported by XPS. The possible generality of the displacement of N(SiMe3)2- from a low valent metal is discussed.
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34
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Hernández-Valdés D, Meola G, Braband H, Spingler B, Alberto R. Direct Synthesis of Non-Alkyl Functionalized Bis-Arene Complexes of Rhenium and 99(m)Technetium. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00494] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniel Hernández-Valdés
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Giuseppe Meola
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Henrik Braband
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Bernhard Spingler
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Roger Alberto
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
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35
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Affiliation(s)
- Jürgen Pahl
- Inorganic and Organometallic Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany
| | - Alexander Friedrich
- Inorganic and Organometallic Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany
| | - Holger Elsen
- Inorganic and Organometallic Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany
| | - Sjoerd Harder
- Inorganic and Organometallic Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany
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36
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Tavsan Z, Yaman PK, Subasi E, Kayali HA. Screening organometallic thiophene containing thiosemicarbazone ruthenium (II/III) complexes as potential anti-tumour agents. J Biol Inorg Chem 2018; 23:425-435. [PMID: 29569084 DOI: 10.1007/s00775-018-1549-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Accepted: 02/27/2018] [Indexed: 10/17/2022]
Abstract
The new ruthenium (III) complex has been synthesized and characterized by elemental analysis, FT-IR, UV-Vis, EI-Mass, EPR spectroscopy, and magnetic susceptibility measurement. Cytotoxic effects of organoruthenium (II/III) complexes 1a, 1b, and 2a, and their ligands (TSC1 and TSC2) in cultured human ovarian (A2780, SKOV-3, and OVCAR-3) and colon (DLD, CCD18Co, and Caco-2) cells have been investigated comparing reactivity of the Ru (II/III) complexes and their free TSC ligands. The complexes exhibit higher cytotoxicity in three cancer cell lines than in normal cells. The binding with CT-DNA and BSA of the all complexes were weak compared with their ligand in spite of the cellular uptake of these complexes into the cytoplasm and then nucleus while their cytotoxic effects were vice versa. All the results showed that Complex 1b has more efficient cytotoxicity on the colon cancer cells than ovarian cancer cells. However, Complex 2a is a better drug candidate especially for antitumor therapy of metastasized ovarian cancer.
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Affiliation(s)
- Zehra Tavsan
- The Graduate School of Natural and Applied Sciences, Dokuz Eylül University, Izmir, Turkey.,Izmir Biomedicine and Genome Center, Izmir, Turkey
| | - Pelin Köse Yaman
- Department of Chemistry, Faculty of Science, Dokuz Eylül University, Izmir, Turkey
| | - Elif Subasi
- Department of Chemistry, Faculty of Science, Dokuz Eylül University, Izmir, Turkey
| | - Hulya Ayar Kayali
- Department of Chemistry, Faculty of Science, Dokuz Eylül University, Izmir, Turkey. .,Izmir Biomedicine and Genome Center, Izmir, Turkey.
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37
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Kilpatrick AFR, Green JC, Turner ZR, Buffet JC, O'Hare D. Zirconium arene triple-decker sandwich complexes: synthesis, electronic structure and bonding. Chem Commun (Camb) 2018; 53:12048-12051. [PMID: 29063098 DOI: 10.1039/c7cc07083g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Reduction of a permethylpentalene zirconium(iv) chloride complex [η8-Pn*Zr(μ-Cl)3/2]2(μ-Cl)2Li·THFx with KC8 in benzene results in activation of the aromatic solvent to yield an "inverted sandwich" complex, [η8-Pn*Zr]2(μ-η6:η6-C6H6) (1). The reactions in toluene, cumene, o-xylene and m-xylene also yield analogous solvent activated triple-decker sandwich complexes, which have been structurally characterised by single-crystal X-ray diffraction. Edge energies in the Zr K-edge XANES spectra are not distinguishable between 1 and formally Zr(ii) and Zr(iv) reference compounds, suggesting a broad edge structure. DFT calculations best describe the bonding in 1 as highly covalent with frontier molecular orbitals showing almost equal contributions from benzene and the Zr-permethylpentalene fragments.
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Affiliation(s)
- A F R Kilpatrick
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK.
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38
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Nakanishi Y, Ishida Y, Kawaguchi H. An anionic η2-naphthalene complex of titanium supported by a tripodal [O3C] ligand and its reactions with dinitrogen, anthracene and THF. Dalton Trans 2018; 47:6903-6907. [DOI: 10.1039/c8dt01161c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
An η2-naphthalene titanium complex supported by a tripodal ligand reacts with N2 to produce a strongly activated N2 complex.
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Affiliation(s)
- Yusuke Nakanishi
- Department of Chemistry
- Tokyo Institute of Technology
- Tokyo 152-8551
- Japan
| | - Yutaka Ishida
- Department of Chemistry
- Tokyo Institute of Technology
- Tokyo 152-8551
- Japan
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39
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Malenov DP, Antonijević IS, Hall MB, Zarić SD. Stacking of cyclopentadienyl organometallic sandwich and half-sandwich compounds. Strong interactions of sandwiches at large offsets. CrystEngComm 2018. [DOI: 10.1039/c8ce00597d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
73% of stacking of Cp sandwiches in the CSD is at large offsets, since these interactions are relatively strong. Much weaker stacking between Cp half-sandwiches is surprising 60% of all stacks, due to more simultaneous interactions.
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Affiliation(s)
| | - Ivana S. Antonijević
- Institute of Chemistry
- Technology and Metallurgy
- University of Belgrade
- 11000 Belgrade
- Serbia
| | | | - Snežana D. Zarić
- Faculty of Chemistry
- University of Belgrade
- 11000 Belgrade
- Serbia
- Department of Chemistry
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40
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Yavuz M, Yaman PK, Öztürk N, Timur S, Subaşı E. p-Cymene Based Organometallic Ruthenium(II)-Arene Complexes with Benzaldehyde Derived Thiosemicarbazones: Synthesis, Characterization and Antimicrobial Activity. DICLE MEDICAL JOURNAL 2017. [DOI: 10.5798/dicletip.362482] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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41
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Zhou K, Zhao CB, Huang WD. Theoretical study of structure, bonding, and electronic behavior of novel sandwich complexes Os3(C6H6)
n
(n = 1, 2). RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2017. [DOI: 10.1134/s0036024417110383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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42
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Brosmer JL, Huang W, Diaconescu PL. Reduction of Diphenylacetylene Mediated by Rare-Earth Ferrocene Diamide Complexes. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00541] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Jonathan L. Brosmer
- Department of Chemistry and
Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Wenliang Huang
- Department of Chemistry and
Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Paula L. Diaconescu
- Department of Chemistry and
Biochemistry, University of California, Los Angeles, California 90095, United States
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43
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Meola G, Braband H, Hernández-Valdés D, Gotzmann C, Fox T, Spingler B, Alberto R. A Mixed-Ring Sandwich Complex from Unexpected Ring Contraction in [Re(η6-C6H5Br)(η6-C6R6)](PF6). Inorg Chem 2017; 56:6297-6301. [DOI: 10.1021/acs.inorgchem.7b00394] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Giuseppe Meola
- Department of Chemistry, University of Zurich, Winterthurerstr. 190, CH-8057 Zurich, Switzerland
| | - Henrik Braband
- Department of Chemistry, University of Zurich, Winterthurerstr. 190, CH-8057 Zurich, Switzerland
| | - Daniel Hernández-Valdés
- Department of Chemistry, University of Zurich, Winterthurerstr. 190, CH-8057 Zurich, Switzerland
| | - Carla Gotzmann
- Department of Chemistry, University of Zurich, Winterthurerstr. 190, CH-8057 Zurich, Switzerland
| | - Thomas Fox
- Department of Chemistry, University of Zurich, Winterthurerstr. 190, CH-8057 Zurich, Switzerland
| | - Bernhard Spingler
- Department of Chemistry, University of Zurich, Winterthurerstr. 190, CH-8057 Zurich, Switzerland
| | - Roger Alberto
- Department of Chemistry, University of Zurich, Winterthurerstr. 190, CH-8057 Zurich, Switzerland
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44
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Half-sandwich ruthenium-arene complexes with thiophen containing thiosemicarbazones: Synthesis and structural characterization. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.01.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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45
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Cycloheptatrienyl dicarbollyl zirconium complexes: Building blocks for the preparation of multidecker sandwich complexes. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2016.11.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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46
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Meola G, Braband H, Jordi S, Fox T, Blacque O, Spingler B, Alberto R. Structure and reactivities of rhenium and technetium bis-arene sandwich complexes [M(η6-arene)2]+. Dalton Trans 2017; 46:14631-14637. [DOI: 10.1039/c7dt02072d] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Rhenium and 99Tc bis-arene complexes for a molecule-based theranostic approach are presented. Conjugation of biovectors to benzene or substitution of naphthalene allows integration of {Re(η6-C6H6)}+ in pharmaceutical lead structures.
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Affiliation(s)
- Giuseppe Meola
- University of Zurich
- Department of Chemistry
- CH-8057 Zurich
- Switzerland
| | - Henrik Braband
- University of Zurich
- Department of Chemistry
- CH-8057 Zurich
- Switzerland
| | - Sara Jordi
- University of Zurich
- Department of Chemistry
- CH-8057 Zurich
- Switzerland
| | - Thomas Fox
- University of Zurich
- Department of Chemistry
- CH-8057 Zurich
- Switzerland
| | - Olivier Blacque
- University of Zurich
- Department of Chemistry
- CH-8057 Zurich
- Switzerland
| | - Bernhard Spingler
- University of Zurich
- Department of Chemistry
- CH-8057 Zurich
- Switzerland
| | - Roger Alberto
- University of Zurich
- Department of Chemistry
- CH-8057 Zurich
- Switzerland
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47
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Meola G, Braband H, Schmutz P, Benz M, Spingler B, Alberto R. Bis-Arene Complexes [Re(η6-arene)2]+ as Highly Stable Bioorganometallic Scaffolds. Inorg Chem 2016; 55:11131-11139. [DOI: 10.1021/acs.inorgchem.6b01748] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Giuseppe Meola
- Department of Chemistry, University of Zürich, Winterthurerstrasse
190, CH-8057 Zürich, Switzerland
| | - Henrik Braband
- Department of Chemistry, University of Zürich, Winterthurerstrasse
190, CH-8057 Zürich, Switzerland
| | - Paul Schmutz
- Department of Chemistry, University of Zürich, Winterthurerstrasse
190, CH-8057 Zürich, Switzerland
| | - Michael Benz
- Department of Chemistry, University of Zürich, Winterthurerstrasse
190, CH-8057 Zürich, Switzerland
| | - Bernhard Spingler
- Department of Chemistry, University of Zürich, Winterthurerstrasse
190, CH-8057 Zürich, Switzerland
| | - Roger Alberto
- Department of Chemistry, University of Zürich, Winterthurerstrasse
190, CH-8057 Zürich, Switzerland
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48
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Thapaliya B, Debnath S, Arulsamy N, Roddick DM. Synthesis and Structural Characterization of an Unusual Platinum π-Arene Complex: (η6-C6H3Me3)Pt[(C2F5)2PMe]Me+. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00410] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bhusan Thapaliya
- Department
of Chemistry, University of Wyoming, Dept. 3838, 1000 E. University Avenue, Laramie, Wyoming 82071, United States
| | - Suman Debnath
- Department
of Chemistry, University of Wyoming, Dept. 3838, 1000 E. University Avenue, Laramie, Wyoming 82071, United States
| | - Navamoney Arulsamy
- Department
of Chemistry, University of Wyoming, Dept. 3838, 1000 E. University Avenue, Laramie, Wyoming 82071, United States
| | - Dean M. Roddick
- Department
of Chemistry, University of Wyoming, Dept. 3838, 1000 E. University Avenue, Laramie, Wyoming 82071, United States
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49
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Pushkarevsky NA, Semenov NA, Dmitriev AA, Kuratieva NV, Bogomyakov AS, Irtegova IG, Vasilieva NV, Bode BE, Gritsan NP, Konstantinova LS, Woollins JD, Rakitin OA, Konchenko SN, Ovcharenko VI, Zibarev AV. Synthesis and Properties of the Heterospin (S1 = S2 = 1/2) Radical-Ion Salt Bis(mesitylene)molybdenum(I) [1,2,5]Thiadiazolo[3,4-c][1,2,5]thiadiazolidyl. Inorg Chem 2015; 54:7007-13. [DOI: 10.1021/acs.inorgchem.5b01033] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | | | | | | | - Bela E. Bode
- EaStCHEM School of Chemistry and Centre of Magnetic Resonance, University of St. Andrews, St. Andrews, Fife KY16 9ST, United Kingdom
| | | | | | - J. Derek Woollins
- EaStCHEM School of Chemistry and Centre of Magnetic Resonance, University of St. Andrews, St. Andrews, Fife KY16 9ST, United Kingdom
| | - Oleg A. Rakitin
- Institute
of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia
| | | | | | - Andrey V. Zibarev
- Department of Chemistry, Tomsk State University, 634050 Tomsk, Russia
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50
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Wright AM, Irving BJ, Wu G, Meijer AJHM, Hayton TW. A Copper(I)-Arene Complex With an Unsupported η6Interaction. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201410948] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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