1
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van Alten RS, Wätjen F, Demeshko S, Miller AJM, Würtele C, Siewert I, Schneider S. (Electro-)chemical Splitting of Dinitrogen with a Rhenium Pincer Complex. Eur J Inorg Chem 2020; 2020:1402-1410. [PMID: 32421038 PMCID: PMC7217231 DOI: 10.1002/ejic.201901278] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Indexed: 11/25/2022]
Abstract
The splitting of N2 into well‐defined terminal nitride complexes is a key reaction for nitrogen fixation at ambient conditions. In continuation of our previous work on rhenium pincer mediated N2 splitting, nitrogen activation and cleavage upon (electro)chemical reduction of [ReCl2(L2)] {L2 = N(CHCHPtBu2)2–} is reported. The electrochemical characterization of [ReCl2(L2)] and comparison with our previously reported platform [ReCl2(L1)] {L1 = N(CH2CH2PtBu2)2–} provides mechanistic insight to rationalize the dependence of nitride yield on the reductant. Furthermore, the reactivity of N2 derived nitride complex [Re(N)Cl(L2)] with electrophiles is presented.
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Affiliation(s)
- Richt S van Alten
- Institute of Inorganic Chemistry University of Goettingen Tammannstraße 4 37077 Goettingen Germany
| | - Florian Wätjen
- Institute of Inorganic Chemistry University of Goettingen Tammannstraße 4 37077 Goettingen Germany
| | - Serhiy Demeshko
- Institute of Inorganic Chemistry University of Goettingen Tammannstraße 4 37077 Goettingen Germany
| | - Alexander J M Miller
- Department of Chemistry University of North Carolina at Chapel Hill 27599-3290 Chapel Hill NC USA
| | - Christian Würtele
- Institute of Inorganic Chemistry University of Goettingen Tammannstraße 4 37077 Goettingen Germany
| | - Inke Siewert
- Institute of Inorganic Chemistry University of Goettingen Tammannstraße 4 37077 Goettingen Germany.,International Center for Advanced Studies of Energy Conversion University of Goettingen Tammannstraße 6 37077 Goettingen Germany
| | - Sven Schneider
- Institute of Inorganic Chemistry University of Goettingen Tammannstraße 4 37077 Goettingen Germany.,International Center for Advanced Studies of Energy Conversion University of Goettingen Tammannstraße 6 37077 Goettingen Germany
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2
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Recent advances in the chemistry of group 9—Pincer organometallics. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2020. [DOI: 10.1016/bs.adomc.2019.09.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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3
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Delony D, Kinauer M, Diefenbach M, Demeshko S, Würtele C, Holthausen MC, Schneider S. A Terminal Iridium Oxo Complex with a Triplet Ground State. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201905325] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Daniel Delony
- Universität GöttingenInstitut für Anorganische Chemie Tammannstr. 4 37077 Göttingen Germany
| | - Markus Kinauer
- Universität GöttingenInstitut für Anorganische Chemie Tammannstr. 4 37077 Göttingen Germany
| | - Martin Diefenbach
- Goethe-Universität FrankfurtInstitut für Anorganische und Analytische Chemie Max-von-Laue-Str. 7 60438 Frankfurt am Main Germany
| | - Serhiy Demeshko
- Universität GöttingenInstitut für Anorganische Chemie Tammannstr. 4 37077 Göttingen Germany
| | - Christian Würtele
- Universität GöttingenInstitut für Anorganische Chemie Tammannstr. 4 37077 Göttingen Germany
| | - Max C. Holthausen
- Goethe-Universität FrankfurtInstitut für Anorganische und Analytische Chemie Max-von-Laue-Str. 7 60438 Frankfurt am Main Germany
| | - Sven Schneider
- Universität GöttingenInstitut für Anorganische Chemie Tammannstr. 4 37077 Göttingen Germany
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4
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Delony D, Kinauer M, Diefenbach M, Demeshko S, Würtele C, Holthausen MC, Schneider S. A Terminal Iridium Oxo Complex with a Triplet Ground State. Angew Chem Int Ed Engl 2019; 58:10971-10974. [PMID: 31155825 DOI: 10.1002/anie.201905325] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Indexed: 11/10/2022]
Abstract
A terminal iridium oxo complex with an open-shell (S=1) ground state was isolated upon hydrogen atom transfer (HAT) from the respective iridium(II) hydroxide. Electronic structure examinations support large spin delocalization to the oxygen atom. Selected oxo transfer reactions indicate the ambiphilic reactivity of the iridium oxo moiety. Calorimetric and computational examinations of the HAT revealed a bond dissociation free energy for the IrO-H bond that is sufficient for hydrogen atom abstraction towards C-H bonds and small contributions from entropy and spin-orbit coupling to the HAT thermochemistry.
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Affiliation(s)
- Daniel Delony
- Universität Göttingen, Institut für Anorganische Chemie, Tammannstr. 4, 37077, Göttingen, Germany
| | - Markus Kinauer
- Universität Göttingen, Institut für Anorganische Chemie, Tammannstr. 4, 37077, Göttingen, Germany
| | - Martin Diefenbach
- Goethe-Universität Frankfurt, Institut für Anorganische und Analytische Chemie, Max-von-Laue-Str. 7, 60438, Frankfurt am Main, Germany
| | - Serhiy Demeshko
- Universität Göttingen, Institut für Anorganische Chemie, Tammannstr. 4, 37077, Göttingen, Germany
| | - Christian Würtele
- Universität Göttingen, Institut für Anorganische Chemie, Tammannstr. 4, 37077, Göttingen, Germany
| | - Max C Holthausen
- Goethe-Universität Frankfurt, Institut für Anorganische und Analytische Chemie, Max-von-Laue-Str. 7, 60438, Frankfurt am Main, Germany
| | - Sven Schneider
- Universität Göttingen, Institut für Anorganische Chemie, Tammannstr. 4, 37077, Göttingen, Germany
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5
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Hermosilla P, López P, García-Orduña P, Lahoz FJ, Polo V, Casado MA. Amido Complexes of Iridium with a PNP Pincer Ligand: Reactivity toward Alkynes and Hydroamination Catalysis. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00365] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Pablo Hermosilla
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Departamento de Química Inorgánica, CSIC-Universidad de Zaragoza, c/Pedro Cerbuna 12 50009, Zaragoza, Spain
| | - Pablo López
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Departamento de Química Inorgánica, CSIC-Universidad de Zaragoza, c/Pedro Cerbuna 12 50009, Zaragoza, Spain
| | - Pilar García-Orduña
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Departamento de Química Inorgánica, CSIC-Universidad de Zaragoza, c/Pedro Cerbuna 12 50009, Zaragoza, Spain
| | - Fernando J. Lahoz
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Departamento de Química Inorgánica, CSIC-Universidad de Zaragoza, c/Pedro Cerbuna 12 50009, Zaragoza, Spain
| | - Víctor Polo
- Departamento de Química Física and Instituto de Biocomputación y Física de los Sistemas Complejos (BIFI), Universidad de Zaragoza, c/Pedro Cerbuna 12 50009, Zaragoza, Spain
| | - Miguel A. Casado
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Departamento de Química Inorgánica, CSIC-Universidad de Zaragoza, c/Pedro Cerbuna 12 50009, Zaragoza, Spain
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6
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Kinauer M, Diefenbach M, Bamberger H, Demeshko S, Reijerse EJ, Volkmann C, Würtele C, van Slageren J, de Bruin B, Holthausen MC, Schneider S. An iridium(iii/iv/v) redox series featuring a terminal imido complex with triplet ground state. Chem Sci 2018; 9:4325-4332. [PMID: 29780564 PMCID: PMC5944377 DOI: 10.1039/c8sc01113c] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 04/13/2018] [Indexed: 01/11/2023] Open
Abstract
An iridium(iii–v) imido series has been isolated that features an iridium complex with an unprecedented triplet ground state.
The iridium(iii/iv/v) imido redox series [Ir(NtBu){N(CHCHPtBu2)2}]0/+/2+ was synthesized and examined spectroscopically, magnetically, crystallographically and computationally. The monocationic iridium(iv) imide exhibits an electronic doublet ground state with considerable ‘imidyl’ character as a result of covalent Ir–NtBu bonding. Reduction gives the neutral imide [Ir(NtBu){N(CHCHPtBu2)2}] as the first example of an iridium complex with a triplet ground state. Its reactivity with respect to nitrene transfer to selected electrophiles (CO2) and nucleophiles (PMe3), respectively, is reported.
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Affiliation(s)
- Markus Kinauer
- Universität Göttingen , Institut für Anorganische Chemie , Tammannstr. 4 , 37077 Göttingen , Germany .
| | - Martin Diefenbach
- Institut für Anorganische und Analytische Chemie , Goethe-Universität , Max-von-Laue-Str. 7 , 60438 Frankfurt am Main , Germany
| | - Heiko Bamberger
- Institut für Physikalische Chemie , Universität Stuttgart , Pfaffenwaldring 55 , D-70569 Stuttgart , Germany
| | - Serhiy Demeshko
- Universität Göttingen , Institut für Anorganische Chemie , Tammannstr. 4 , 37077 Göttingen , Germany .
| | - Edward J Reijerse
- Max-Planck-Institut für Chemische Energiekonversion , Stiftstr. 34-36 , 45470 Mülheim an der Ruhr , Germany
| | - Christian Volkmann
- Universität Göttingen , Institut für Anorganische Chemie , Tammannstr. 4 , 37077 Göttingen , Germany .
| | - Christian Würtele
- Universität Göttingen , Institut für Anorganische Chemie , Tammannstr. 4 , 37077 Göttingen , Germany .
| | - Joris van Slageren
- Institut für Physikalische Chemie , Universität Stuttgart , Pfaffenwaldring 55 , D-70569 Stuttgart , Germany
| | - Bas de Bruin
- van 't Hoff Institute for Molecular Sciences (HIMS) , University of Amsterdam , The Netherlands .
| | - Max C Holthausen
- Institut für Anorganische und Analytische Chemie , Goethe-Universität , Max-von-Laue-Str. 7 , 60438 Frankfurt am Main , Germany
| | - Sven Schneider
- Universität Göttingen , Institut für Anorganische Chemie , Tammannstr. 4 , 37077 Göttingen , Germany .
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7
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Bruch QJ, Lindley BM, Askevold B, Schneider S, Miller AJM. A Ruthenium Hydrido Dinitrogen Core Conserved across Multielectron/Multiproton Changes to the Pincer Ligand Backbone. Inorg Chem 2018; 57:1964-1975. [PMID: 29419289 DOI: 10.1021/acs.inorgchem.7b02889] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A series of ruthenium(II) hydrido dinitrogen complexes supported by pincer ligands in different formal oxidation states have been prepared and characterized. Treating a ruthenium dichloride complex supported by the pincer ligand bis(di-tert-butylphosphinoethyl)amine (H-PNP) with reductant or base generates new five-coordinate cis-hydridodinitrogen ruthenium complexes each containing different forms of the pincer ligand. Further ligand transformations provide access to the first isostructural set of complexes featuring all six different forms of the pincer ligand. The conserved cis-hydridodinitrogen structure facilitates characterization of the π-donor, π-acceptor, and/or σ-donor properties of the ligands and assessment of the impact of ligand-centered multielectron/multiproton changes on N2 activation. Crystallographic studies, infrared spectroscopy, and 15N NMR spectroscopy indicate that N2 remains weakly activated in all cases, providing insight into the donor properties of the different pincer ligand states. Ramifications on applications of (pincer)Ru species in catalysis are considered.
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Affiliation(s)
- Quinton J Bruch
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599-3290, United States
| | - Brian M Lindley
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599-3290, United States
| | - Bjorn Askevold
- University of Goettingen , Institute for Inorganic Chemistry, 37077 Goettingen, Germany
| | - Sven Schneider
- University of Goettingen , Institute for Inorganic Chemistry, 37077 Goettingen, Germany
| | - Alexander J M Miller
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599-3290, United States
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8
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Abbenseth J, Bete SC, Finger M, Volkmann C, Würtele C, Schneider S. Four- and Five-Coordinate Osmium(IV) Nitrides and Imides: Circumventing the “Nitrido Wall”. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00707] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Josh Abbenseth
- Universität Göttingen, Institut für Anorganische Chemie, Tammannstraße 4, 37077 Göttingen, Germany
| | - Sarah C. Bete
- Universität Göttingen, Institut für Anorganische Chemie, Tammannstraße 4, 37077 Göttingen, Germany
| | - Markus Finger
- Universität Göttingen, Institut für Anorganische Chemie, Tammannstraße 4, 37077 Göttingen, Germany
| | - Christian Volkmann
- Universität Göttingen, Institut für Anorganische Chemie, Tammannstraße 4, 37077 Göttingen, Germany
| | - Christian Würtele
- Universität Göttingen, Institut für Anorganische Chemie, Tammannstraße 4, 37077 Göttingen, Germany
| | - Sven Schneider
- Universität Göttingen, Institut für Anorganische Chemie, Tammannstraße 4, 37077 Göttingen, Germany
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9
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Matteucci E, Baschieri A, Mazzanti A, Sambri L, Ávila J, Pertegás A, Bolink HJ, Monti F, Leoni E, Armaroli N. Anionic Cyclometalated Iridium(III) Complexes with a Bis-Tetrazolate Ancillary Ligand for Light-Emitting Electrochemical Cells. Inorg Chem 2017; 56:10584-10595. [DOI: 10.1021/acs.inorgchem.7b01544] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Elia Matteucci
- Dipartimento di
Chimica Industriale “Toso Montanari”, Università di Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
| | - Andrea Baschieri
- Dipartimento di
Chimica “Giacomo Ciamician”, Università di Bologna, Via San Giacomo 11, 40126 Bologna, Italy
| | - Andrea Mazzanti
- Dipartimento di
Chimica Industriale “Toso Montanari”, Università di Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
| | - Letizia Sambri
- Dipartimento di
Chimica Industriale “Toso Montanari”, Università di Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
| | - Jorge Ávila
- Instituto de Ciencia
Molecular, Universidad de Valencia, C/J. Beltran 2, 46980 Paterna, Spain
| | - Antonio Pertegás
- Instituto de Ciencia
Molecular, Universidad de Valencia, C/J. Beltran 2, 46980 Paterna, Spain
| | - Henk J. Bolink
- Instituto de Ciencia
Molecular, Universidad de Valencia, C/J. Beltran 2, 46980 Paterna, Spain
| | - Filippo Monti
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, Via P. Gobetti 101, 40129 Bologna, Italy
| | - Enrico Leoni
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, Via P. Gobetti 101, 40129 Bologna, Italy
- Laboratorio Tecnologie dei Materiali Faenza, ENEA, Via Ravegnana 186, 48018 Faenza (RA), Italy
| | - Nicola Armaroli
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, Via P. Gobetti 101, 40129 Bologna, Italy
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10
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Lagaditis PO, Schluschaß B, Demeshko S, Würtele C, Schneider S. Square-Planar Cobalt(III) Pincer Complex. Inorg Chem 2016; 55:4529-36. [DOI: 10.1021/acs.inorgchem.6b00369] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Paraskevi O. Lagaditis
- Institut
für Anorganische Chemie, Georg-August-Universität, Tammannstraße 4, 37077 Göttingen, Germany
| | - Bastian Schluschaß
- Institut
für Anorganische Chemie, Georg-August-Universität, Tammannstraße 4, 37077 Göttingen, Germany
| | - Serhiy Demeshko
- Institut
für Anorganische Chemie, Georg-August-Universität, Tammannstraße 4, 37077 Göttingen, Germany
| | - Christian Würtele
- Institut
für Anorganische Chemie, Georg-August-Universität, Tammannstraße 4, 37077 Göttingen, Germany
| | - Sven Schneider
- Institut
für Anorganische Chemie, Georg-August-Universität, Tammannstraße 4, 37077 Göttingen, Germany
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11
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Prokopchuk DE, Lough AJ, Rodriguez-Lugo RE, Morris RH, Grützmacher H. Insights into metal–ligand hydrogen transfer: a square-planar ruthenate complex supported by a tetradentate amino–amido-diolefin ligand. Chem Commun (Camb) 2016; 52:6138-41. [DOI: 10.1039/c6cc00041j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A unique square planar anionic ruthenium(0) complex with amido and amine donors undergoes rapid NH oxidative addition/elimination reactions.
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Affiliation(s)
- Demyan E. Prokopchuk
- Department of Chemistry
- University of Toronto
- Toronto
- Canada
- Department of Chemistry and Applied Biosciences
| | - Alan J. Lough
- Department of Chemistry
- University of Toronto
- Toronto
- Canada
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12
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Dub PA, Scott BL, Gordon JC. First-row transition metal complexes of ENENES ligands: the ability of the thioether donor to impact the coordination chemistry. Dalton Trans 2016; 45:1560-71. [DOI: 10.1039/c5dt03855c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The reactions of two variants of ENENES ligands, E(CH2)2NH(CH)2SR, where E = 4-morpholinyl, R = Ph (a), Bn (b) with MCl2 (M = Mn, Fe, Co, Ni and Cu) in coordinating solvents (MeCN, EtOH) affords isolable complexes, whose magnetic susceptibility measurements suggest paramagnetism and a high-spin formulation.
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Affiliation(s)
- Pavel A. Dub
- Chemistry Division
- Los Alamos National Laboratory
- Los Alamos
- USA
| | - Brian L. Scott
- Materials and Physics Applications Division
- Los Alamos National Laboratory
- Los Alamos
- USA
| | - John C. Gordon
- Chemistry Division
- Los Alamos National Laboratory
- Los Alamos
- USA
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13
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Walter M. Recent Advances in Transition Metal-Catalyzed Dinitrogen Activation. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2016. [DOI: 10.1016/bs.adomc.2016.03.001] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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14
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Schiwek C, Meiners J, Förster M, Würtele C, Diefenbach M, Holthausen MC, Schneider S. Oxygen Reduction with a Bifunctional Iridium Dihydride Complex. Angew Chem Int Ed Engl 2015; 54:15271-5. [PMID: 26511744 DOI: 10.1002/anie.201504369] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Revised: 09/07/2015] [Indexed: 11/06/2022]
Abstract
The iridium dihydride [Ir(H)2 (HPNP)](+) (PNP=N(CH2 CH2 PtBu2 )2 ) reacts with O2 to give the unusual, square-planar iridium(III) hydroxide [Ir(OH)(PNP)](+) and water. Regeneration of the dihydride with H2 closes a quasi-catalytic synthetic oxygen-reduction reaction (ORR) cycle that can be run several times. Experimental and computational examinations are in agreement with an oxygenation mechanism via rate-limiting O2 coordination followed by H-transfer at a single metal site, facilitated by the cooperating pincer ligand. Hence, the four electrons required for the ORR are stored within the two covalent MH bonds of a mononuclear metal complex.
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Affiliation(s)
- Christoph Schiwek
- Institut für Anorganische Chemie, Georg-August-Universität, Tammannstr. 4, 37077 Göttingen (Germany)
| | - Jenni Meiners
- Institut für Anorganische Chemie, Georg-August-Universität, Tammannstr. 4, 37077 Göttingen (Germany)
| | - Moritz Förster
- Insitut für Anorganische und Analytische Chemie, Goethe-Universität, Max-von-Laue-Str. 7, 60438 Frankfurt am Main (Germany)
| | - Christian Würtele
- Institut für Anorganische Chemie, Georg-August-Universität, Tammannstr. 4, 37077 Göttingen (Germany)
| | - Martin Diefenbach
- Insitut für Anorganische und Analytische Chemie, Goethe-Universität, Max-von-Laue-Str. 7, 60438 Frankfurt am Main (Germany)
| | - Max C Holthausen
- Insitut für Anorganische und Analytische Chemie, Goethe-Universität, Max-von-Laue-Str. 7, 60438 Frankfurt am Main (Germany).
| | - Sven Schneider
- Institut für Anorganische Chemie, Georg-August-Universität, Tammannstr. 4, 37077 Göttingen (Germany).
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15
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Schiwek C, Meiners J, Förster M, Würtele C, Diefenbach M, Holthausen MC, Schneider S. Oxygen Reduction with a Bifunctional Iridium Dihydride Complex. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201504369] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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16
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Scheibel MG, Abbenseth J, Kinauer M, Heinemann FW, Würtele C, de Bruin B, Schneider S. Homolytic N-H activation of ammonia: hydrogen transfer of parent iridium ammine, amide, imide, and nitride species. Inorg Chem 2015; 54:9290-302. [PMID: 26192601 PMCID: PMC4597254 DOI: 10.1021/acs.inorgchem.5b00829] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2015] [Indexed: 11/28/2022]
Abstract
The redox series [Ir(n)(NHx)(PNP)] (n = II-IV, x = 3-0; PNP = N(CHCHPtBu2)2) was examined with respect to electron, proton, and hydrogen atom transfer steps. The experimental and computational results suggest that the Ir(III) imido species [Ir(NH)(PNP)] is not stable but undergoes disproportionation to the respective Ir(II) amido and Ir(IV) nitrido species. N-H bond strengths are estimated upon reaction with hydrogen atom transfer reagents to rationalize this observation and are used to discuss the reactivity of these compounds toward E-H bond activation.
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Affiliation(s)
- Markus G. Scheibel
- Institut für Anorganische Chemie, Georg-August-Universität, Tammannstraße 4, 37077 Göttingen, Germany
| | - Josh Abbenseth
- Institut für Anorganische Chemie, Georg-August-Universität, Tammannstraße 4, 37077 Göttingen, Germany
| | - Markus Kinauer
- Institut für Anorganische Chemie, Georg-August-Universität, Tammannstraße 4, 37077 Göttingen, Germany
| | - Frank W. Heinemann
- Department of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander University Erlangen−Nürnberg
(FAU), Egerlandstr. 1, 91058 Erlangen, Germany
| | - Christian Würtele
- Institut für Anorganische Chemie, Georg-August-Universität, Tammannstraße 4, 37077 Göttingen, Germany
| | - Bas de Bruin
- Homogeneous and Supramolecular Catalysis group, van ’t
Hoff Institute for Molecular Sciences (HIMS), University of Amsterdam, 1090 GD Amsterdam, The Netherlands
| | - Sven Schneider
- Institut für Anorganische Chemie, Georg-August-Universität, Tammannstraße 4, 37077 Göttingen, Germany
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17
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Affiliation(s)
- Alexey V. Polukeev
- Centre
for Analysis and Synthesis,
Department of Chemistry, Lund University, P.O. Box 124, S-22100 Lund, Sweden
| | - Ola F. Wendt
- Centre
for Analysis and Synthesis,
Department of Chemistry, Lund University, P.O. Box 124, S-22100 Lund, Sweden
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18
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Dub PA, Scott BL, Gordon JC. Air-Stable NNS (ENENES) Ligands and Their Well-Defined Ruthenium and Iridium Complexes for Molecular Catalysis. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00432] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Pavel A. Dub
- Chemistry Division, and ‡Materials and Physics Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Brian L. Scott
- Chemistry Division, and ‡Materials and Physics Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - John C. Gordon
- Chemistry Division, and ‡Materials and Physics Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
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Hernández-Juárez M, Toscano RA, Cortés-Guzmán F, Zúñiga-Villarreal N. Hydrogen and oxygen activation by an iridium precursor containing the 4,5-bis(diphenylthiophosphinoyl)-1,2,3-triazolate ligand. RSC Adv 2015. [DOI: 10.1039/c5ra07698f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Complex [Ir(κ2-S,N-(4,5-(P(S)Ph2)2Tz))(coe)2] (coe = cyclooctene) was prepared upon reaction of potassium 4,5-bis(diphenylthiophosphinoyl)-1,2,3-triazolate with [Ir(coe)2(μ-Cl)]2. Its phosphorus derivatives were susceptible of oxidative addition processes.
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Affiliation(s)
- M. Hernández-Juárez
- Instituto de Química
- Universidad Nacional Autónoma de México
- Ciudad Universitaria
- D. F
- 04510 Mexico
| | - R. A. Toscano
- Instituto de Química
- Universidad Nacional Autónoma de México
- Ciudad Universitaria
- D. F
- 04510 Mexico
| | - F. Cortés-Guzmán
- Instituto de Química
- Universidad Nacional Autónoma de México
- Ciudad Universitaria
- D. F
- 04510 Mexico
| | - N. Zúñiga-Villarreal
- Instituto de Química
- Universidad Nacional Autónoma de México
- Ciudad Universitaria
- D. F
- 04510 Mexico
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20
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Askevold B, Khusniyarov MM, Kroener W, Gieb K, Müller P, Herdtweck E, Heinemann FW, Diefenbach M, Holthausen MC, Vieru V, Chibotaru LF, Schneider S. Square-planar ruthenium(II) complexes: control of spin state by pincer ligand functionalization. Chemistry 2014; 21:579-89. [PMID: 25359612 DOI: 10.1002/chem.201404282] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Indexed: 11/07/2022]
Abstract
Functionalization of the PNP pincer ligand backbone allows for a comparison of the dialkyl amido, vinyl alkyl amido, and divinyl amido ruthenium(II) pincer complex series [RuCl{N(CH2 CH2 PtBu2 )2 }], [RuCl{N(CHCHPtBu2 )(CH2 CH2 PtBu2 )}], and [RuCl{N(CHCHPtBu2 )2 }], in which the ruthenium(II) ions are in the extremely rare square-planar coordination geometry. Whereas the dialkylamido complex adopts an electronic singlet (S=0) ground state and energetically low-lying triplet (S=1) state, the vinyl alkyl amido and the divinyl amido complexes exhibit unusual triplet (S=1) ground states as confirmed by experimental and computational examination. However, essentially non-magnetic ground states arise for the two intermediate-spin complexes owing to unusually large zero-field splitting (D>+200 cm(-1) ). The change in ground state electronic configuration is attributed to tailored pincer ligand-to-metal π-donation within the PNP ligand series.
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Affiliation(s)
- Bjorn Askevold
- Department Chemie und Pharmazie, Universität Erlangen-Nürnberg, Egerlandstr. 1, 91058 Erlangen (Germany)
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21
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Glüer A, Askevold B, Schluschaß B, Heinemann FW, Schneider S. Electron-rich, Nitrido-bridged Ruthenium Complexes. Z Anorg Allg Chem 2014. [DOI: 10.1002/zaac.201400166] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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