101
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Caise A, Jones D, Kolychev EL, Hicks J, Goicoechea JM, Aldridge S. On the Viability of Catalytic Turnover via Al−O/B−H Metathesis: The Reactivity of β-Diketiminate Aluminium Hydrides towards CO2
and Boranes. Chemistry 2018; 24:13624-13635. [DOI: 10.1002/chem.201802603] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 06/19/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Alexa Caise
- Inorganic Chemistry Laboratory, Department of Chemistry; University of Oxford; South Parks Road Oxford OX1 3QR UK
| | - Dafydd Jones
- Inorganic Chemistry Laboratory, Department of Chemistry; University of Oxford; South Parks Road Oxford OX1 3QR UK
| | - Eugene L. Kolychev
- Inorganic Chemistry Laboratory, Department of Chemistry; University of Oxford; South Parks Road Oxford OX1 3QR UK
| | - Jamie Hicks
- Inorganic Chemistry Laboratory, Department of Chemistry; University of Oxford; South Parks Road Oxford OX1 3QR UK
| | - Jose M. Goicoechea
- Inorganic Chemistry Laboratory, Department of Chemistry; University of Oxford; South Parks Road Oxford OX1 3QR UK
| | - Simon Aldridge
- Inorganic Chemistry Laboratory, Department of Chemistry; University of Oxford; South Parks Road Oxford OX1 3QR UK
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102
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Ganesamoorthy C, Krüger J, Glöckler E, Helling C, John L, Frank W, Wölper C, Schulz S. Comprehensive Study on Reactions of Group 13 Diyls with Tetraorganodipentelanes. Inorg Chem 2018; 57:9495-9503. [DOI: 10.1021/acs.inorgchem.8b01489] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Chelladurai Ganesamoorthy
- Faculty of Chemistry, Inorganic Chemistry, and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitätsstrasse 7, 45141 Essen, Germany
| | - Julia Krüger
- Faculty of Chemistry, Inorganic Chemistry, and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitätsstrasse 7, 45141 Essen, Germany
| | - Eduard Glöckler
- Faculty of Chemistry, Inorganic Chemistry, and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitätsstrasse 7, 45141 Essen, Germany
| | - Christoph Helling
- Faculty of Chemistry, Inorganic Chemistry, and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitätsstrasse 7, 45141 Essen, Germany
| | - Lukas John
- Faculty of Chemistry, Inorganic Chemistry, and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitätsstrasse 7, 45141 Essen, Germany
| | - Walter Frank
- Institute for Inorganic Chemistry and Structural Chemistry, University of Düsseldorf, 40225 Düsseldorf, Germany
| | - Christoph Wölper
- Faculty of Chemistry, Inorganic Chemistry, and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitätsstrasse 7, 45141 Essen, Germany
| | - Stephan Schulz
- Faculty of Chemistry, Inorganic Chemistry, and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitätsstrasse 7, 45141 Essen, Germany
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103
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Wittwer P, Stelzer A, Braun T. Reactivity of Cp*Al towards Silanols: Formation and Hydrolysis of Alumosiloxanes. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800564] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Philipp Wittwer
- Department of Chemistry Humboldt‐Universität zu Berlin Brook‐Taylor‐Straße 2 12489 Berlin Germany
| | - Adrian Stelzer
- Department of Chemistry Humboldt‐Universität zu Berlin Brook‐Taylor‐Straße 2 12489 Berlin Germany
| | - Thomas Braun
- Department of Chemistry Humboldt‐Universität zu Berlin Brook‐Taylor‐Straße 2 12489 Berlin Germany
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104
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Hooper TN, Garçon M, White AJP, Crimmin MR. Room temperature catalytic carbon-hydrogen bond alumination of unactivated arenes: mechanism and selectivity. Chem Sci 2018; 9:5435-5440. [PMID: 30155233 PMCID: PMC6011207 DOI: 10.1039/c8sc02072h] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 05/28/2018] [Indexed: 01/09/2023] Open
Abstract
We report the first catalytic methods for the transformation of C-H bonds of unactivated arenes into C-Al bonds. The catalytic reactions occur at 25 °C (benzene, toluene and xylenes) with palladium loadings as low as 0.1 mol%. Remarkably, the C-H activation of toluene and xylenes proceeds with ortho- and meta-selectivity. This selectivity is highly unusual and complementary to both Friedel-Crafts and the majority of C-H borylation methods. Through a detailed mechanistic analysis (Eyring analysis, KIE, DFT, QTAIM) we show that unusual Pd-Al intermetallic complexes are on the catalytic cycle and that the selectivity is determined by weak attractive dispersion forces in the transition state for C-H bond breaking.
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Affiliation(s)
- Thomas N Hooper
- Department of Chemistry , Imperial College London , South Kensington , London , SW7 2AZ , UK .
| | - Martí Garçon
- Department of Chemistry , Imperial College London , South Kensington , London , SW7 2AZ , UK .
| | - Andrew J P White
- Department of Chemistry , Imperial College London , South Kensington , London , SW7 2AZ , UK .
| | - Mark R Crimmin
- Department of Chemistry , Imperial College London , South Kensington , London , SW7 2AZ , UK .
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105
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Bakewell C, White AJP, Crimmin MR. Reactions of Fluoroalkenes with an Aluminium(I) Complex. Angew Chem Int Ed Engl 2018; 57:6638-6642. [DOI: 10.1002/anie.201802321] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Indexed: 11/05/2022]
Affiliation(s)
- Clare Bakewell
- Department of ChemistryImperial College London South Kensington London SW7 2AZ UK
| | - Andrew J. P. White
- Department of ChemistryImperial College London South Kensington London SW7 2AZ UK
| | - Mark R. Crimmin
- Department of ChemistryImperial College London South Kensington London SW7 2AZ UK
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106
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Bakewell C, White AJP, Crimmin MR. Reactions of Fluoroalkenes with an Aluminium(I) Complex. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201802321] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Clare Bakewell
- Department of ChemistryImperial College London South Kensington London SW7 2AZ UK
| | - Andrew J. P. White
- Department of ChemistryImperial College London South Kensington London SW7 2AZ UK
| | - Mark R. Crimmin
- Department of ChemistryImperial College London South Kensington London SW7 2AZ UK
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107
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Hicks J, Vasko P, Goicoechea JM, Aldridge S. Synthesis, structure and reaction chemistry of a nucleophilic aluminyl anion. Nature 2018; 557:92-95. [DOI: 10.1038/s41586-018-0037-y] [Citation(s) in RCA: 199] [Impact Index Per Article: 33.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 02/16/2018] [Indexed: 11/09/2022]
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108
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Chu T, Nikonov GI. Oxidative Addition and Reductive Elimination at Main-Group Element Centers. Chem Rev 2018; 118:3608-3680. [DOI: 10.1021/acs.chemrev.7b00572] [Citation(s) in RCA: 342] [Impact Index Per Article: 57.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Terry Chu
- Department of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario L2S 3A1, Canada
| | - Georgii I. Nikonov
- Department of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario L2S 3A1, Canada
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109
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Zheng J, Li ZH, Wang H. Addition of dihydrogen to a borylborenium center. Chem Sci 2018; 9:1433-1438. [PMID: 29675190 PMCID: PMC5883945 DOI: 10.1039/c7sc04987k] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 11/27/2017] [Indexed: 11/21/2022] Open
Abstract
The activation of a H-H bond, the simplest covalent bond, is a fundamentally important process. Addition of H2 to an elemental center typically occurs on low valent transition metal or main group complexes through oxidative addition to afford metal dihydride complexes. In contrast, activation of H2 on a high valent center generally results in heterolytic cleavage of the H-H bond to a proton and hydride. Here, we report experimental and computational evidence for the addition of H2 to a borenium center in an N-heterocyclic carbene (NHC) coordinated borylborenium cation, which leads to the formation of a dihydroborenium complex accompanied by the elimination of two σ-bonded substituents, namely mesityl (Mes) and pinacolboryl (Bpin) groups, as mesitylboronic ester.
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Affiliation(s)
- Junhao Zheng
- Department of Chemistry , Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials , Fudan University , Handan Road 220 , Shanghai , 200433 , China . ;
| | - Zhen Hua Li
- Department of Chemistry , Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials , Fudan University , Handan Road 220 , Shanghai , 200433 , China . ;
| | - Huadong Wang
- Department of Chemistry , Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials , Fudan University , Handan Road 220 , Shanghai , 200433 , China . ;
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110
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Tuscher L, Helling C, Wölper C, Frank W, Nizovtsev AS, Schulz S. A General Route to Metal-Substituted Dipnictenes of the Type [L(X)M] 2 E 2. Chemistry 2018; 24:3241-3250. [PMID: 29266416 DOI: 10.1002/chem.201705233] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Indexed: 11/09/2022]
Abstract
Two equivalents of LGa (L=HC[C(Me)N(2,6-iPr2 C6 H3 )]2 ) reacted with PX3 (X=Cl, Br) with insertion into two P-X bonds and formation of [L(X)Ga]2 PX (X=Cl 1, Br 2), whereas the analogous reaction with AsCl3 occurred with twofold insertion and subsequent elimination of LGaCl2 and formation of the Ga-substituted diarsene [L(Cl)Ga]2 As2 (3). Analogous findings were observed in the reactions with Me2 NAsCl2 , yielding the unsymmetrically-substituted diarsene [L(Cl)Ga]As=As[Ga(NMe2 )L] (4). The reaction of As(NMe2 )3 with LGa gave [L(Me2 N)Ga]2 As2 (5) after heating at 165 °C for five days, whereas the reaction with LAl gave [L(Me2 N)Al]2 As2 (6) after heating at only 80 °C for one day. Finally, two equivalents of LGa reacted with Bi(NEt2 )3 to give [L(Et2 N)Ga]2 Bi2 (7). Complexes 1-7 were characterized by NMR spectroscopy (1 H, 13 C, 31 P), elemental analysis, and single-crystal X-ray diffraction (except for 1 and 5). The bonding situations in 4, 6, and 7 were analyzed by quantum chemical calculations.
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Affiliation(s)
- Lars Tuscher
- Faculty of Chemistry and Center for NanoIntegration Duisburg-Essen (Cenide), University of Duisburg-Essen, Universitätsstr. 5-7, S07 S03 C30, 45117, Essen, Germany
| | - Christoph Helling
- Faculty of Chemistry and Center for NanoIntegration Duisburg-Essen (Cenide), University of Duisburg-Essen, Universitätsstr. 5-7, S07 S03 C30, 45117, Essen, Germany
| | - Christoph Wölper
- Faculty of Chemistry and Center for NanoIntegration Duisburg-Essen (Cenide), University of Duisburg-Essen, Universitätsstr. 5-7, S07 S03 C30, 45117, Essen, Germany
| | - Walter Frank
- Institute for Inorganic Chemistry and Structural Chemistry, Heinrich Heine University of Düsseldorf, Universitätsstr. 1, 40225, Düsseldorf, Germany
| | - Anton S Nizovtsev
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Academician Lavrentiev Avenue 3, 630090, Novosibirsk, Russian Federation.,Novosibirsk State University, Pirogova Street 2, 630090, Novosibirsk, Russian Federation.,School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Stephan Schulz
- Faculty of Chemistry and Center for NanoIntegration Duisburg-Essen (Cenide), University of Duisburg-Essen, Universitätsstr. 5-7, S07 S03 C30, 45117, Essen, Germany
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111
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Bakewell C, Ward BJ, White AJP, Crimmin MR. A combined experimental and computational study on the reaction of fluoroarenes with Mg-Mg, Mg-Zn, Mg-Al and Al-Zn bonds. Chem Sci 2018; 9:2348-2356. [PMID: 29719707 PMCID: PMC5897846 DOI: 10.1039/c7sc05059c] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2017] [Accepted: 01/19/2018] [Indexed: 11/21/2022] Open
Abstract
Through a combined experimental and computational (DFT) approach, the reaction mechanism of the addition of fluoroarenes to Mg–Mg bonds has been determined as a concerted SNAr-like pathway in which one Mg centre acts as a nucleophile and the other an electrophile.
Through a combined experimental and computational (DFT) approach, the reaction mechanism of the addition of fluoroarenes to Mg–Mg bonds has been determined as a concerted SNAr-like pathway in which one Mg centre acts as a nucleophile and the other an electrophile. The experimentally determined Gibbs activation energy for the addition of C6F6 to a Mg–Mg bond of a molecular complex, ΔG‡298 K(experiment) = 21.3 kcal mol–1 is modelled by DFT with the ωB97X functional, ΔG‡298 K(DFT) = 25.7 kcal mol–1. The transition state for C–F activation involves a polarisation of the Mg–Mg bond and significant negative charge localisation on the fluoroarene moiety. This transition state is augmented by stabilising closed-shell Mg···Fortho interactions that, in combination with the known trends in C–F and C–M bond strengths in fluoroarenes, provide an explanation for the experimentally determined preference for C–F bond activation to occur at sites flanked by ortho-fluorine atoms. The effect of modification of both the ligand coordination sphere and the nature and polarity of the M–M bond (M = Mg, Zn, Al) on C–F activation has been investigated. A series of highly novel β-diketiminate stabilised complexes containing Zn–Mg, Zn–Zn–Zn, Zn–Al and Mg–Al bonds has been prepared, including the first crystallographic characterisation of a Mg–Al bond. Reactions of these new M–M containing complexes with perfluoroarenes were conducted and modelled by DFT. C–F bond activation is dictated by the steric accessibility, and not the polarity, of the M–M bond. The more open coordination complexes lead to enhanced Mg···Fortho interactions which in turn lower the energy of the transition states for C–F bond activation.
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Affiliation(s)
- Clare Bakewell
- Department of Chemistry , Imperial College London , South Kensington , London , SW7 2AZ , UK .
| | - Bryan J Ward
- Department of Chemistry , Imperial College London , South Kensington , London , SW7 2AZ , UK .
| | - Andrew J P White
- Department of Chemistry , Imperial College London , South Kensington , London , SW7 2AZ , UK .
| | - Mark R Crimmin
- Department of Chemistry , Imperial College London , South Kensington , London , SW7 2AZ , UK .
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112
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Sinhababu S, Kundu S, Paesch AN, Herbst-Irmer R, Stalke D, Roesky HW. A Route to Aluminumdiisocyanate and -diisothiocyanate from an Al(I) Precursor. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201701347] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Soumen Sinhababu
- Institut für Anorganische Chemie; Universität Göttingen; Tammannstraße 4 37077 Göttingen Germany
| | - Subrata Kundu
- Institut für Anorganische Chemie; Universität Göttingen; Tammannstraße 4 37077 Göttingen Germany
| | - Alexander N. Paesch
- Institut für Anorganische Chemie; Universität Göttingen; Tammannstraße 4 37077 Göttingen Germany
| | - Regine Herbst-Irmer
- Institut für Anorganische Chemie; Universität Göttingen; Tammannstraße 4 37077 Göttingen Germany
| | - Dietmar Stalke
- Institut für Anorganische Chemie; Universität Göttingen; Tammannstraße 4 37077 Göttingen Germany
| | - Herbert W. Roesky
- Institut für Anorganische Chemie; Universität Göttingen; Tammannstraße 4 37077 Göttingen Germany
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113
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Nguyen MT, Gabidullin B, Nikonov GI. Imino-stabilised phosphinidene (or azaphosphole?) and some of its derivatives. Dalton Trans 2018; 47:17011-17019. [DOI: 10.1039/c8dt03465f] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Diiminophenyl (dimph) proved to be an excellent ligand platform to stabilise a low-valent phosphorus centre.
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Affiliation(s)
| | - Bulat Gabidullin
- X-ray Core Facility
- Faculty of Science University of Ottawa
- Ottawa
- Canada K1N 6N5
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114
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Trose M, Burnett S, Bonyhady SJ, Jones C, Cordes DB, Slawin AMZ, Stasch A. NormalandabnormalNHC coordination in cationic hydride iodide complexes of aluminium. Dalton Trans 2018; 47:10281-10287. [DOI: 10.1039/c8dt01798k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Sterically demanding NHC aluminium hydride iodide complexes react with one equivalent of NHC to cationic mixednormal–abnormalNHC AlIIIcomplexes.
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Affiliation(s)
- Michael Trose
- EaStCHEM School of Chemistry
- University of St Andrews
- St Andrews
- UK
| | - Stuart Burnett
- EaStCHEM School of Chemistry
- University of St Andrews
- St Andrews
- UK
| | | | - Cameron Jones
- School of Chemistry
- Monash University
- Clayton
- Australia
| | - David B. Cordes
- EaStCHEM School of Chemistry
- University of St Andrews
- St Andrews
- UK
| | | | - Andreas Stasch
- EaStCHEM School of Chemistry
- University of St Andrews
- St Andrews
- UK
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115
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Cao LL, Stephan DW. Reversible 1,1-hydroaluminations and C–H activation in reactions of a cyclic (alkyl)(amino) carbene with alane. Chem Commun (Camb) 2018; 54:8407-8410. [DOI: 10.1039/c8cc05013a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Varying the reaction ratio of cyclic (alkyl)(amino) carbene (cAACEt) with AlH3·NEtMe2 leads to the isolation of (cAACEtH)AlH2·NEtMe21 and (cAACEtH)2Al(μ-H)2AlH2·NEtMe22 and the first example of a monomeric dialkyl-aluminum hydride (cAACEtH)2AlH 3.
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Affiliation(s)
- Levy L. Cao
- Department of Chemistry
- University of Toronto
- Ontario
- Canada
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116
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Gardner BM, Kefalidis CE, Lu E, Patel D, McInnes EJL, Tuna F, Wooles AJ, Maron L, Liddle ST. Evidence for single metal two electron oxidative addition and reductive elimination at uranium. Nat Commun 2017; 8:1898. [PMID: 29196691 PMCID: PMC5711956 DOI: 10.1038/s41467-017-01363-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 09/11/2017] [Indexed: 11/18/2022] Open
Abstract
Reversible single-metal two-electron oxidative addition and reductive elimination are common fundamental reactions for transition metals that underpin major catalytic transformations. However, these reactions have never been observed together in the f-block because these metals exhibit irreversible one- or multi-electron oxidation or reduction reactions. Here we report that azobenzene oxidises sterically and electronically unsaturated uranium(III) complexes to afford a uranium(V)-imido complex in a reaction that satisfies all criteria of a single-metal two-electron oxidative addition. Thermolysis of this complex promotes extrusion of azobenzene, where H-/D-isotopic labelling finds no isotopomer cross-over and the non-reactivity of a nitrene-trap suggests that nitrenes are not generated and thus a reductive elimination has occurred. Though not optimally balanced in this case, this work presents evidence that classical d-block redox chemistry can be performed reversibly by f-block metals, and that uranium can thus mimic elementary transition metal reactivity, which may lead to the discovery of new f-block catalysis. The reactivity of f-block complexes is primarily defined by single-electron oxidations and σ-bond metathesis. Here, Liddle and co-workers provide evidence that a uranium complex can undergo reversible oxidative addition and reductive elimination, demonstrating transition metal-like reactivity within f-block chemistry.
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Affiliation(s)
- Benedict M Gardner
- School of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Christos E Kefalidis
- LPCNO, CNRS & INSA, Université Paul Sabatier, 135 Avenue de Rangueil, Toulouse, 31077, France
| | - Erli Lu
- School of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Dipti Patel
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Eric J L McInnes
- EPSRC National UK EPR Facility, School of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Floriana Tuna
- EPSRC National UK EPR Facility, School of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Ashley J Wooles
- School of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Laurent Maron
- LPCNO, CNRS & INSA, Université Paul Sabatier, 135 Avenue de Rangueil, Toulouse, 31077, France.
| | - Stephen T Liddle
- School of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
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117
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Bag P, Porzelt A, Altmann PJ, Inoue S. A Stable Neutral Compound with an Aluminum-Aluminum Double Bond. J Am Chem Soc 2017; 139:14384-14387. [PMID: 28898060 DOI: 10.1021/jacs.7b08890] [Citation(s) in RCA: 127] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Homodinuclear multiple-bonded neutral Al compounds, aluminum analogues of alkenes, have been a notoriously difficult synthetic target over the past several decades. Herein, we report the isolation of a stable neutral compound featuring an Al═Al double bond stabilized by N-heterocyclic carbenes. X-ray crystallographic and spectroscopic analyses demonstrate that the dialuminum entity possesses trans-planar geometry and an Al-Al bond length of 2.3943(16) Å, which is the shortest distance reported for a molecular dialuminum species. This new species reacts with ethylene and phenyl acetylene to give the [2+2] cycloaddition products. The structure and bonding were also investigated by detailed density functional theory calculations. These results clearly demonstrate the presence of an Al═Al double bond in this molecule.
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Affiliation(s)
- Prasenjit Bag
- Department of Chemistry, Catalysis Research Center and Institute of Silicon Chemistry, Technische Universität München , Lichtenbergstraße 4, 85748 Garching bei München, Germany
| | - Amelie Porzelt
- Department of Chemistry, Catalysis Research Center and Institute of Silicon Chemistry, Technische Universität München , Lichtenbergstraße 4, 85748 Garching bei München, Germany
| | - Philipp J Altmann
- Department of Chemistry, Catalysis Research Center and Institute of Silicon Chemistry, Technische Universität München , Lichtenbergstraße 4, 85748 Garching bei München, Germany
| | - Shigeyoshi Inoue
- Department of Chemistry, Catalysis Research Center and Institute of Silicon Chemistry, Technische Universität München , Lichtenbergstraße 4, 85748 Garching bei München, Germany
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118
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Wang H, Wu L, Lin Z, Xie Z. Synthesis, Structure and Reactivity of a Borylene Cation [(NHSi) 2B(CO)] + Stabilized by Three Neutral Ligands. J Am Chem Soc 2017; 139:13680-13683. [PMID: 28885010 DOI: 10.1021/jacs.7b08667] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A borylene cation stabilized by bis(silylene) and carbon monoxide was prepared and structurally characterized via the reaction of bis(silylene)-stabilized bromoborylene with W(CO)6. This is the first example of a borylene cation coordinated by three neutral ligands, which can be viewed as a cationic form of a long-sought Lewis base-stabilized zerovalent boron compound. This cation can cleave dihydrogen.
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Affiliation(s)
- Hao Wang
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong , Shatin, New Territories, Hong Kong, China
| | - Linlin Wu
- Department of Chemistry, The Hong Kong University of Science and Technology , Clear Water Bay, Kowloon, Hong Kong, China
| | - Zhenyang Lin
- Department of Chemistry, The Hong Kong University of Science and Technology , Clear Water Bay, Kowloon, Hong Kong, China
| | - Zuowei Xie
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong , Shatin, New Territories, Hong Kong, China
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119
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Jain S, Vanka K. The Unusual Role of Aromatic Solvent in Single-Site Aluminum I Chemistry: Insights from Theory. Chemistry 2017; 23:13957-13963. [PMID: 28730755 DOI: 10.1002/chem.201701642] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Indexed: 11/08/2022]
Abstract
The single-site activation of strong σ bonds (such as that of H-H, P-H, and N-H) remains a significant challenge in main-group chemistry, with only a few cases reported to date. In this regard, recent exciting experiments performed with aluminumI complexes hold significance because they have been seen to activate a variety of strong σ bonds. Such chemistry is generally seen to occur in aromatic solvents. Current computational studies with DFT reveal the interesting reason for this: an explicit aromatic solvent molecule acts as a catalyst by converting the aluminumI complex into aluminumIII during the process. Different cases of σ-bond activation by aluminumI complexes have been investigated and the efficiency of H-X (X=H, NHtBu, PPh2 ) bond activation in the presence of an explicit benzene solvent molecule is orders of magnitude higher than that in its absence. The current work therefore reveals the chemistry of aluminumI complexes to be richer and more complex than that previously realized, and shows it to be dependent on metal-solvent cooperativity; the first known example of its kind in main-group chemistry.
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Affiliation(s)
- Shailja Jain
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Pune, 411008, India.,Academy of Scientific and Innovative Research (AcSIR), New Delhi, 110020, India
| | - Kumar Vanka
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Pune, 411008, India.,Academy of Scientific and Innovative Research (AcSIR), New Delhi, 110020, India
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120
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Pitsch CE, Wang X. Aluminum(i) β-diketiminato complexes activate C(sp 2)-F and C(sp 3)-F bonds by different oxidative addition mechanisms: a DFT study. Chem Commun (Camb) 2017; 53:8196-8198. [PMID: 28681885 DOI: 10.1039/c7cc03503a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
DFT computations reveal different reaction mechanisms for the oxidative addition of C(sp2)-F and C(sp3)-F bonds to the Al(i) complexes: a concerted mechanism for C(sp2)-F and a stepwise mechanism for C(sp3)-F involving fluoride transfer and the formation and recombination of an ion pair.
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Affiliation(s)
- Chloe E Pitsch
- Department of Chemistry, University of Colorado Denver, Campus Box 194, P.O. Box 173364, Denver, Colorado 80217-3364, USA.
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121
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Brown AC, Altman AB, Lohrey TD, Hohloch S, Arnold J. Hydride oxidation from a titanium-aluminum bimetallic complex: insertion, thermal and electrochemical reactivity. Chem Sci 2017; 8:5153-5160. [PMID: 30155225 PMCID: PMC6102661 DOI: 10.1039/c7sc01835e] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 05/09/2017] [Indexed: 12/03/2022] Open
Abstract
We report the synthesis and reactivity of paramagnetic heterometallic complexes containing a Ti(iii)-μ-H-Al(iii) moiety. Combining different stoichiometries amounts of Cp2TiCl and KH3AlC(TMS)3 (Cp = cyclopentadienyl, TMS = trimethylsilyl) resulted in the formation of either bimetallic Cp2Ti(μ-H)2(H)AlC(TMS)3 (2) or trimetallic (Cp2Ti)2(μ-H)3(H)AlC(TMS)3 (3) via salt metathesis pathways. While these complexes were indefinitely stable at room temperature, the bridging hydrides were readily activated upon exposure to heteroallenes, heating, or electrochemical oxidation. In each case, formal hydride oxidation occurred, but the isolated product maintained the +3 oxidation state at both metal centers. The nature of this reactivity was explored using deuterium labelling experiments and Density Functional Theory (DFT) calculations. It was found that while C-H activation from the Ti(iii) bimetallic may occur through a σ-bond metathesis pathway, chemical oxidation to Ti(iv) promotes bimolecular reductive elimination of dihydrogen to form a Ti(iii) product.
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Affiliation(s)
- Alexandra C Brown
- Department of Chemistry , University of California , Berkeley , California 94720 , USA .
| | - Alison B Altman
- Department of Chemistry , University of California , Berkeley , California 94720 , USA .
- Chemical Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , USA
| | - Trevor D Lohrey
- Department of Chemistry , University of California , Berkeley , California 94720 , USA .
- Chemical Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , USA
| | - Stephan Hohloch
- Department of Chemistry , University of California , Berkeley , California 94720 , USA .
- Chemical Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , USA
| | - John Arnold
- Department of Chemistry , University of California , Berkeley , California 94720 , USA .
- Chemical Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , USA
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122
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Chu T, Vyboishchikov SF, Gabidullin BM, Nikonov GI. Unusual Reactions of NacNacAl with Urea and Phosphine Oxides. Inorg Chem 2017; 56:5993-5997. [PMID: 28463502 DOI: 10.1021/acs.inorgchem.7b00716] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reaction of cyclic urea 1,3-dimethyl-2-imidazolidinone with the aluminum(I) compound NacNacAl (1) gives an unexpected adduct of urea with the isomerized aluminum(III) hydride NacNac'AlH(O═SIMe) (3). A related reaction of 1 with phosphine oxides results in cleavage of the P═O bond and formation of hydroxyl derivatives NacNac'Al(OH)(O═PR3) [R = Ph (5) and Et (6)]. Density functional theory calculations revealed that these reactions proceed via a bimolecular mechanism in which either the basic aluminum(I) center or the transient Al═O species deprotonate the methyl group of the NacNac ligand.
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Affiliation(s)
- Terry Chu
- Department of Chemistry, Brock University , 1812 Sir Isaac Brock Way, St. Catharines, Ontario L2S 3A1, Canada
| | - Sergei F Vyboishchikov
- Institut de Química Computacional i Catàlisi and Departament de Química, Universitat de Girona , Carrer Maria Aurèlia Capmany 69, Girona 17003, Spain
| | - Bulat M Gabidullin
- X-Ray Core Facility, Faculty of Science, University of Ottawa , 150 Louis Pasteur, Ottawa, Ontario K1N 6N5, Canada
| | - Georgii I Nikonov
- Department of Chemistry, Brock University , 1812 Sir Isaac Brock Way, St. Catharines, Ontario L2S 3A1, Canada
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123
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Agou T, Tokitoh N. Reactivity of Organoaluminum Compounds with Unique Coordination Modes. J SYN ORG CHEM JPN 2017. [DOI: 10.5059/yukigoseikyokaishi.75.723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Tomohiro Agou
- Department of Biomolecular Functional Engineering, School of Engineering, Ibaraki University
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124
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Li B, Kundu S, Zhu H, Keil H, Herbst-Irmer R, Stalke D, Frenking G, Andrada DM, Roesky HW. An open route to asymmetric substituted Al–Al bonds using Al(i)- and Al(iii)-precursors. Chem Commun (Camb) 2017; 53:2543-2546. [DOI: 10.1039/c7cc00325k] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An applicable synthetic pathway for asymmetric Al(ii)–Al(ii) compounds was developed using Al(iii) and Al(i) precursors.
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Affiliation(s)
- Bin Li
- Institut für Anorganische Chemie
- Georg-August-Universität Göttingen
- 37077 Göttingen
- Germany
- State Key Laboratory of Physical Chemistry of Solid Surfaces
| | - Subrata Kundu
- Institut für Anorganische Chemie
- Georg-August-Universität Göttingen
- 37077 Göttingen
- Germany
| | - Hongping Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces
- National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen 361005
| | - Helena Keil
- Institut für Anorganische Chemie
- Georg-August-Universität Göttingen
- 37077 Göttingen
- Germany
| | - Regine Herbst-Irmer
- Institut für Anorganische Chemie
- Georg-August-Universität Göttingen
- 37077 Göttingen
- Germany
| | - Dietmar Stalke
- Institut für Anorganische Chemie
- Georg-August-Universität Göttingen
- 37077 Göttingen
- Germany
| | - Gernot Frenking
- Fachbereich Chemie
- Philipps-Universtät Marburg
- 35032 Marburg
- Germany
| | - Diego M. Andrada
- Fachbereich Chemie
- Philipps-Universtät Marburg
- 35032 Marburg
- Germany
| | - Herbert W. Roesky
- Institut für Anorganische Chemie
- Georg-August-Universität Göttingen
- 37077 Göttingen
- Germany
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125
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126
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Keyes LK, Todd ADK, Giffin NA, Veinot AJ, Hendsbee AD, Robertson KN, Geier SJ, Masuda JD. Reaction of sterically encumbered phenols, TEMPO-H, and organocarbonyl insertion reactions with L-AlH2 (L = HC(MeCNDipp)2, Dipp = 2,6-diisopropylphenyl). RSC Adv 2017. [DOI: 10.1039/c7ra06526d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A bulky aluminum dihydride reacts with R–OH and organocarbonyls to give a variety of products; including OC insertion into the Al–H bond.
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Affiliation(s)
- Lauren K. Keyes
- The Department of Chemistry
- Saint Mary's University
- Halifax
- Canada
| | | | - Nick A. Giffin
- The Department of Chemistry
- Saint Mary's University
- Halifax
- Canada
| | - Alex J. Veinot
- The Department of Chemistry
- Saint Mary's University
- Halifax
- Canada
| | | | | | | | - Jason D. Masuda
- The Department of Chemistry
- Saint Mary's University
- Halifax
- Canada
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127
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Dange D, Sindlinger CP, Aldridge S, Jones C. Boryl substituted group 13 metallylenes: complexes with an iron carbonyl fragment. Chem Commun (Camb) 2016; 53:149-152. [PMID: 27824166 DOI: 10.1039/c6cc08449d] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first examples of boryl substituted aluminylene and gallylene complexes, [(DAB)B(THF)Al{Fe(CO)3(μ-CO)}]2 and [(DAB)BGa{μ-Fe(CO)4}]2 (DAB = {(C6H3Pri2-2,6)NCH}2) have been prepared by reduction of MX2(THF){B(DAB)} (M = Al or Ga, X = Cl or Br) with K2[Fe(CO)4]. Spectroscopic and crystallographic analyses of the compounds show them to be structurally distinct dimers, the latter of which possesses a close GaGa separation that computational analyses reveal has negligible bonding character.
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Affiliation(s)
- Deepak Dange
- Monash Centre for Catalysis, School of Chemistry, PO Box 23, Monash University, VIC 3800, Australia.
| | - Christian P Sindlinger
- Department of Chemistry, Inorganic Chemistry Laboratory, South Parks Road, Oxford, OX1 3QR, UK
| | - Simon Aldridge
- Department of Chemistry, Inorganic Chemistry Laboratory, South Parks Road, Oxford, OX1 3QR, UK
| | - Cameron Jones
- Monash Centre for Catalysis, School of Chemistry, PO Box 23, Monash University, VIC 3800, Australia.
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128
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Schoeller WW, Frey GD. Oxidative Addition of π-Bonds and σ-Bonds to an Al(I) Center: The Second-Order Carbene Property of the AlNacNac Compound. Inorg Chem 2016; 55:10947-10954. [DOI: 10.1021/acs.inorgchem.6b01488] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Guido D. Frey
- Faculty of Chemistry, University of Bielefeld, 33615 Bielefeld, Germany
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129
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Chu T, Vyboishchikov SF, Gabidullin B, Nikonov GI. Oxidative Cleavage of C=S and P=S Bonds at an AlI
Center: Preparation of Terminally Bound Aluminum Sulfides. Angew Chem Int Ed Engl 2016; 55:13306-13311. [DOI: 10.1002/anie.201607735] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Terry Chu
- Department of Chemistry; Brock University; 1812 Sir Isaac Brock Way St. Catharines Ontario L2S 3A1 Canada
| | - Sergei F. Vyboishchikov
- Institut de Química Computacional i Catàlisi and Departament de Química; Carrer Maria Aurèlia Capmany 69 17003 Girona Spain
| | - Bulat Gabidullin
- X-Ray Core Facility; Faculty of Science; University of Ottawa; 150 Louis Pasteur Ottawa Ontario K1N 6N5 Canada
| | - Georgii I. Nikonov
- Department of Chemistry; Brock University; 1812 Sir Isaac Brock Way St. Catharines Ontario L2S 3A1 Canada
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130
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Chu T, Vyboishchikov SF, Gabidullin B, Nikonov GI. Oxidative Cleavage of C=S and P=S Bonds at an AlI
Center: Preparation of Terminally Bound Aluminum Sulfides. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201607735] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Terry Chu
- Department of Chemistry; Brock University; 1812 Sir Isaac Brock Way St. Catharines Ontario L2S 3A1 Canada
| | - Sergei F. Vyboishchikov
- Institut de Química Computacional i Catàlisi and Departament de Química; Carrer Maria Aurèlia Capmany 69 17003 Girona Spain
| | - Bulat Gabidullin
- X-Ray Core Facility; Faculty of Science; University of Ottawa; 150 Louis Pasteur Ottawa Ontario K1N 6N5 Canada
| | - Georgii I. Nikonov
- Department of Chemistry; Brock University; 1812 Sir Isaac Brock Way St. Catharines Ontario L2S 3A1 Canada
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131
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Jakhar VK, Barman MK, Nembenna S. Aluminum Monohydride Catalyzed Selective Hydroboration of Carbonyl Compounds. Org Lett 2016; 18:4710-3. [PMID: 27571142 DOI: 10.1021/acs.orglett.6b02310] [Citation(s) in RCA: 138] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The well-defined aluminum monohydride compound [{(2,4,6-Me3-C6H2)NC(Me)}2(Me)(H)]AlH·(NMe2Et) (1) catalyzes hydroboration of a wide range of aldehydes and ketones under mild reaction conditions. Moreover, compound 1 displayed chemoselective hydroboration of aldehydes over ketones at rt.
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Affiliation(s)
- Vineet Kumar Jakhar
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) , Bhubaneswar 752 050, India
| | - Milan Kr Barman
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) , Bhubaneswar 752 050, India
| | - Sharanappa Nembenna
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) , Bhubaneswar 752 050, India
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132
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Chu T, Boyko Y, Korobkov I, Kuzmina LG, Howard JAK, Nikonov GI. Oxidative Addition of Disulfides, Alkyl Sulfides, and Diphosphides to an Aluminum(I) Center. Inorg Chem 2016; 55:9099-104. [DOI: 10.1021/acs.inorgchem.6b01668] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Terry Chu
- Department
of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario L2S 3A1, Canada
| | - Yaroslav Boyko
- Department
of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario L2S 3A1, Canada
| | - Ilia Korobkov
- X-ray Core Facility,
Faculty of Science, University of Ottawa, 150 Louis Pasteur, Ottawa, Ontario K1N 6N5, Canada
| | - Lyudmila G. Kuzmina
- N. S. Kurnakov Institute of General and Inorganic Chemistry, 31 Leninskii Prospekt, Moscow 119991, Russia
| | - Judith A. K. Howard
- Department of Chemistry, Durham University, South Road, Durham DH1
3LE, United Kingdom
| | - Georgii I. Nikonov
- Department
of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario L2S 3A1, Canada
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133
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García-Rodeja Y, Bickelhaupt FM, Fernández I. Understanding the Oxidative Addition of σ-Bonds to Group 13 Compounds. Chemistry 2016; 22:13669-76. [DOI: 10.1002/chem.201602505] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Indexed: 02/04/2023]
Affiliation(s)
- Yago García-Rodeja
- Departamento de Química Orgánica I; Facultad de Ciencias Químicas; Universidad Complutense; 28040 Madrid Spain
| | - F. Matthias Bickelhaupt
- Department of Theoretical Chemistry; Amsterdam Center for Multiscale Modeling; Vrije Universiteit Amsterdam; De Boelelaan 1083 1081 HV Amsterdam The Netherlands
- Institute of Molecules and Materials; Radboud University; Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Israel Fernández
- Departamento de Química Orgánica I; Facultad de Ciencias Químicas; Universidad Complutense; 28040 Madrid Spain
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134
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Stelzer AC, Hrobárik P, Braun T, Kaupp M, Braun-Cula B. Completing the Heterocubane Family [Cp*AlE]4 (E = O, S, Se, and Te) by Selective Oxygenation and Sulfuration of [Cp*Al]4: Density Functional Theory Calculations of [Cp*AlE]4 and Reactivity of [Cp*AlO]4 toward Hydrolysis. Inorg Chem 2016; 55:4915-23. [DOI: 10.1021/acs.inorgchem.6b00462] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Adrian C. Stelzer
- Department
of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Straße
2, 12489 Berlin, Germany
| | - Peter Hrobárik
- Institut
für Chemie, Technische Universität Berlin, Straße des
17. Juni 135, 10623 Berlin, Germany
| | - Thomas Braun
- Department
of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Straße
2, 12489 Berlin, Germany
| | - Martin Kaupp
- Institut
für Chemie, Technische Universität Berlin, Straße des
17. Juni 135, 10623 Berlin, Germany
| | - Beatrice Braun-Cula
- Department
of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Straße
2, 12489 Berlin, Germany
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135
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Protchenko AV, Bates JI, Saleh LMA, Blake MP, Schwarz AD, Kolychev EL, Thompson AL, Jones C, Mountford P, Aldridge S. Enabling and Probing Oxidative Addition and Reductive Elimination at a Group 14 Metal Center: Cleavage and Functionalization of E–H Bonds by a Bis(boryl)stannylene. J Am Chem Soc 2016; 138:4555-64. [DOI: 10.1021/jacs.6b00710] [Citation(s) in RCA: 128] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Andrey V. Protchenko
- Inorganic
Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, U.K
| | - Joshua I. Bates
- Inorganic
Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, U.K
| | - Liban M. A. Saleh
- Inorganic
Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, U.K
| | - Matthew P. Blake
- Inorganic
Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, U.K
| | - Andrew D. Schwarz
- Inorganic
Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, U.K
| | - Eugene L. Kolychev
- Inorganic
Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, U.K
| | - Amber L. Thompson
- Inorganic
Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, U.K
| | - Cameron Jones
- School
of Chemistry, Monash University, PO Box 23, Melbourne, VIC 3800, Australia
| | - Philip Mountford
- Inorganic
Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, U.K
| | - Simon Aldridge
- Inorganic
Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, U.K
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136
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Kong L, Ganguly R, Li Y, Kinjo R. Serendipitous Observation of AlI
Insertion into a C−O Bond in L2
PhB (L=Oxazol-2-ylidene). Chemistry 2016; 22:1922-1925. [PMID: 26743893 DOI: 10.1002/chem.201504537] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Lingbing Kong
- Division of Chemistry and Biological Chemistry (CBC); School of Physical and Mathematical Sciences; Nanyang Technological University (NTU); Nanyang Link 21 Singapore 637371 Singapore
| | - Rakesh Ganguly
- NTU-CBC Crystallography Facility; Nanyang Technological University; Singapore
| | - Yongxin Li
- NTU-CBC Crystallography Facility; Nanyang Technological University; Singapore
| | - Rei Kinjo
- Division of Chemistry and Biological Chemistry (CBC); School of Physical and Mathematical Sciences; Nanyang Technological University (NTU); Nanyang Link 21 Singapore 637371 Singapore
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137
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Urwin SJ, Rogers DM, Nichol GS, Cowley MJ. Ligand coordination modulates reductive elimination from aluminium(iii). Dalton Trans 2016; 45:13695-9. [DOI: 10.1039/c6dt02698b] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Oxidative addition to low-valent main-group centres is a major class of reactivity for these species. Here, we present a mechanistic study of the much rarer reverse process – reductive elimination – in Al(iii) systems, and unravel ligand effects in this process.
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Affiliation(s)
| | - David M. Rogers
- EaStCHEM School of Chemistry
- University of Edinburgh
- Edinburgh
- UK
| | - Gary S. Nichol
- EaStCHEM School of Chemistry
- University of Edinburgh
- Edinburgh
- UK
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138
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Zhang X, Cao Z. Insight into the reaction mechanisms for oxidative addition of strong σ bonds to an Al(i) center. Dalton Trans 2016; 45:10355-65. [DOI: 10.1039/c6dt01154c] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The oxidative additions of σ X–H bonds to an Al(i) center follow different mechanisms depending on their bonding features and local structural environments.
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Affiliation(s)
- Xiangfei Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces
- Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry
- and College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen 360015
| | - Zexing Cao
- State Key Laboratory of Physical Chemistry of Solid Surfaces
- Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry
- and College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen 360015
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139
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Chu T, Belding L, Poddutoori PK, van der Est A, Dudding T, Korobkov I, Nikonov GI. Unique molecular geometries of reduced 4- and 5-coordinate zinc complexes stabilised by diiminopyridine ligand. Dalton Trans 2016; 45:13440-8. [DOI: 10.1039/c6dt02001a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Stepwise reduction of the diiminopyridine complex dimpyrZnCl2 by KC8 leads to compounds dimpyrZnCl (2), dimpyrZnCl(DMAP) (3) and dimpyrZn(DMAP)2 (4) having unusual square-planar and see-saw geometries.
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Affiliation(s)
- Terry Chu
- Department of Chemistry
- Brock University
- St Catharines
- Canada L2S 3A1
| | - Lee Belding
- Department of Chemistry
- Brock University
- St Catharines
- Canada L2S 3A1
| | | | - Art van der Est
- Department of Chemistry
- Brock University
- St Catharines
- Canada L2S 3A1
| | - Travis Dudding
- Department of Chemistry
- Brock University
- St Catharines
- Canada L2S 3A1
| | - Ilia Korobkov
- X-Ray Core Facility
- Faculty of Science
- University of Ottawa
- Ottawa
- Canada K1N 6N5
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140
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Chu T, Boyko Y, Korobkov I, Nikonov GI. Transition Metal-like Oxidative Addition of C–F and C–O Bonds to an Aluminum(I) Center. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00793] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Terry Chu
- Department
of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario, Canada L2S 3A1
| | - Yaroslav Boyko
- Department
of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario, Canada L2S 3A1
| | - Ilia Korobkov
- X-ray
Core Facility, Faculty of Science, University of Ottawa, 150 Louis
Pasteur, Ottawa, Ontario, Canada K1N 6N5
| | - Georgii I. Nikonov
- Department
of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario, Canada L2S 3A1
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141
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Crimmin MR, Butler MJ, White AJP. Oxidative addition of carbon-fluorine and carbon-oxygen bonds to Al(I). Chem Commun (Camb) 2015; 51:15994-6. [PMID: 26389715 PMCID: PMC4621529 DOI: 10.1039/c5cc07140b] [Citation(s) in RCA: 101] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Addition of fluoroarenes, fluoroalkanes or benzofuran to [{(2,6-iPr2C6H3NCMe)2CH}Al] results in facile oxidative addition of either a C–F or C–O bond to the Al(i) centre.
Addition of fluoroarenes, fluoroalkanes or benzofuran to [{(2,6-iPr2C6H3NCMe)2CH}Al] results in facile oxidative addition of either a C–F or C–O bond to the Al(i) centre.
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Affiliation(s)
- Mark R Crimmin
- Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, UK.
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142
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Altman AB, Pemmaraju CD, Camp C, Arnold J, Minasian SG, Prendergast D, Shuh DK, Tyliszczak T. Theory and X-ray Absorption Spectroscopy for Aluminum Coordination Complexes – Al K-Edge Studies of Charge and Bonding in (BDI)Al, (BDI)AlR2, and (BDI)AlX2 Complexes. J Am Chem Soc 2015; 137:10304-16. [PMID: 26258886 DOI: 10.1021/jacs.5b05854] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alison B. Altman
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
| | | | - Clément Camp
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
| | - John Arnold
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
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143
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Parmelee SR, Mazzacano TJ, Zhu Y, Mankad NP, Keith JA. A Heterobimetallic Mechanism for C–H Borylation Elucidated from Experimental and Computational Data. ACS Catal 2015. [DOI: 10.1021/acscatal.5b00275] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Sean R. Parmelee
- Department
of Chemistry, University of Illinois at Chicago, 845 West Taylor
Street, Chicago, Illinois 60607, United States
| | - Thomas J. Mazzacano
- Department
of Chemistry, University of Illinois at Chicago, 845 West Taylor
Street, Chicago, Illinois 60607, United States
| | - Yaqun Zhu
- Department of Chemical & Petroleum Engineering, University of Pittsburgh, 3700 O’Hara Street, Pittsburgh, Pennsylvania 15261, United States
| | - Neal P. Mankad
- Department
of Chemistry, University of Illinois at Chicago, 845 West Taylor
Street, Chicago, Illinois 60607, United States
| | - John A. Keith
- Department of Chemical & Petroleum Engineering, University of Pittsburgh, 3700 O’Hara Street, Pittsburgh, Pennsylvania 15261, United States
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144
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Riddlestone IM, Abdalla JA, Aldridge S. Coordination and Activation of EH Bonds (E=B, Al, Ga) at Transition Metal Centers. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2015. [DOI: 10.1016/bs.adomc.2015.02.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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145
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Abdalla JAB, Riddlestone IM, Turner J, Kaufman PA, Tirfoin R, Phillips N, Aldridge S. Coordination and Activation of AlH and GaH Bonds. Chemistry 2014; 20:17624-34. [DOI: 10.1002/chem.201405018] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Revised: 09/30/2014] [Indexed: 11/07/2022]
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146
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Ganesamoorthy C, Bläser D, Wölper C, Schulz S. Temperature-Dependent Electron Shuffle in Molecular Group 13/15 Intermetallic Complexes. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201406304] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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147
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Ganesamoorthy C, Bläser D, Wölper C, Schulz S. Temperature-Dependent Electron Shuffle in Molecular Group 13/15 Intermetallic Complexes. Angew Chem Int Ed Engl 2014; 53:11587-91. [DOI: 10.1002/anie.201406304] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Indexed: 11/07/2022]
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