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Zhai X, Pang M, Feng L, Jia J, Tung CH, Wang W. Dehydrogenation of iron amido-borane and resaturation of the imino-borane complex. Chem Sci 2021; 12:2885-2889. [PMID: 34164054 PMCID: PMC8179412 DOI: 10.1039/d0sc06787c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
We report on the first isolation and structural characterization of an iron phosphinoimino-borane complex Cp*Fe(η2-H2B
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NC6H4PPh2) by dehydrogenation of iron amido-borane precursor Cp*Fe(η1-H3B–NHC6H4PPh2). Significantly, regeneration of the amido-borane complex has been realized by protonation of the iron(ii) imino-borane to the amino-borane intermediate [Cp*Fe(η2-H2B–NHC6H4PPh2)]+ followed by hydride transfer. These new iron species are efficient catalysts for 1,2-selective transfer hydrogenation of quinolines with ammonia borane. Dehydrogenation of an amido-borane iron complex provides an imino-borane complex. Regeneration of the amido-borane precursor was achieved by protonation of the imino-borane followed by hydride transfer to the amino-borane intermediate.![]()
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Affiliation(s)
- Xiaofang Zhai
- School of Chemistry and Chemical Engineering, Shandong University No. 27 South Shanda Road Jinan 250100 China
| | - Maofu Pang
- School of Chemistry and Chemical Engineering, Shandong University No. 27 South Shanda Road Jinan 250100 China
| | - Lei Feng
- School of Chemistry and Chemical Engineering, Shandong University No. 27 South Shanda Road Jinan 250100 China
| | - Jiong Jia
- School of Chemistry and Chemical Engineering, Shandong University No. 27 South Shanda Road Jinan 250100 China
| | - Chen-Ho Tung
- School of Chemistry and Chemical Engineering, Shandong University No. 27 South Shanda Road Jinan 250100 China
| | - Wenguang Wang
- School of Chemistry and Chemical Engineering, Shandong University No. 27 South Shanda Road Jinan 250100 China .,College of Chemistry, Beijing Normal University No. 19 Xinjiekouwai St Beijing 100875 China
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Bai X, Mei T, Yang D, Su L, Wang B, Qu J. Synthesis, characterization and reactivity toward small molecules of a diiron tetrahydrido bridged complex. INORG CHEM COMMUN 2020. [DOI: 10.1016/j.inoche.2020.108286] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Prakash R, Nanda Pradhan A, Ghosh S. Chemistry of bimetallic hexaborane(10) analogues: A combined experimental and theoretical study. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119898] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Lenczyk C, Roy DK, Oberdorf K, Nitsch J, Dewhurst RD, Radacki K, Halet J, Marder TB, Bickelhaupt M, Braunschweig H. Toward Transition-Metal-Templated Construction of Arylated B 4 Chains by Dihydroborane Dehydrocoupling. Chemistry 2019; 25:16544-16549. [PMID: 31663648 PMCID: PMC6972581 DOI: 10.1002/chem.201904772] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Indexed: 01/24/2023]
Abstract
The reactivity of a diruthenium tetrahydride complex towards three selected dihydroboranes was investigated. The use of [DurBH2 ] (Dur=2,3,5,6-Me4 C6 H) and [(Me3 Si)2 NBH2 ] led to the formation of bridging borylene complexes of the form [(Cp*RuH)2 BR] (Cp*=C5 Me5 ; 1 a: R=Dur; 1 b: R=N(SiMe3 )2 ) through oxidative addition of the B-H bonds with concomitant hydrogen liberation. Employing the more electron-deficient dihydroborane [3,5-(CF3 )2 -C6 H3 BH2 ] led to the formation of an anionic complex bearing a tetraarylated chain of four boron atoms, namely Li(THF)4 [(Cp*Ru)2 B4 H5 (3,5-(CF3 )2 C6 H3 )4 ] (4), through an unusual, incomplete threefold dehydrocoupling process. A comparative theoretical investigation of the bonding in a simplified model of 4 and the analogous complex nido-[1,2(Cp*Ru)2 (μ-H)B4 H9 ] (I) indicates that there appear to be no classical σ-bonds between the boron atoms in complex I, whereas in the case of 4 the B4 chain better resembles a network of three B-B σ bonds, the central bond being significantly weaker than the other two.
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Affiliation(s)
- Carsten Lenczyk
- Institute for Inorganic ChemistryJulius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg (Germany), and Institute for, Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Dipak Kumar Roy
- Institute for Inorganic ChemistryJulius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg (Germany), and Institute for, Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany,Discipline of ChemistryIndian Institute of Technology IndoreKhandwa Road, SimrolIndore453552, M.P.India
| | - Kai Oberdorf
- Institute for Inorganic ChemistryJulius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg (Germany), and Institute for, Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Jörn Nitsch
- Institute for Inorganic ChemistryJulius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg (Germany), and Institute for, Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Rian D. Dewhurst
- Institute for Inorganic ChemistryJulius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg (Germany), and Institute for, Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Krzysztof Radacki
- Institute for Inorganic ChemistryJulius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg (Germany), and Institute for, Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Jean‐François Halet
- Univ Rennes CNRSInstitut des Sciences Chimiques de RennesUMR 622635000RennesFrance
| | - Todd B. Marder
- Institute for Inorganic ChemistryJulius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg (Germany), and Institute for, Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Matthias Bickelhaupt
- Department of Theoretical Chemistry and Amsterdam Center for, Multiscale Modeling (ACMM)Vrije Universiteit AmsterdamDe Boelelaan 1083, 1081 HV Amsterdam (The Netherlands), and Institute for Molecules and Materials (IMM), Radboud University, Heyendaalseweg 1356525AJNijmegenThe Netherlands
| | - Holger Braunschweig
- Institute for Inorganic ChemistryJulius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg (Germany), and Institute for, Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
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Burkhardt L, Mueller C, Groß OA, Sun Y, Sitzmann H, Bauer M. The Bonding Situation in the Dinuclear Tetra-Hydrido Complex [{ 5CpFe} 2(μ-H) 4] Revisited by Hard X-Ray Spectroscopy. Inorg Chem 2019; 58:6609-6618. [PMID: 30596494 DOI: 10.1021/acs.inorgchem.8b03032] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
High energy resolution fluorescence detected XANES (HERFD-XANES) and valence-to-core X-ray emission spectroscopy (VtC-XES) are introduced as powerful tools to investigate hydride-iron interaction, the possible iron-iron bond, and iron spin state of the dinuclear tetra-hydrido complex [{5CpFe}2(μ-H)4] (1H, 5Cp = η5-C5 iPr5) by thoroughly accessing the geometric and electronic structure of this complex in comparison to the nonhydride reference [5CpCpFe] (1, Cp = C5H5). The so far observed most intense hydride induced signals in the pre-edge feature of the HERFD-XANES and in the VtC-XES spectra at the iron K-edge allow a precise analysis of the LUMO and HOMO states, respectively, by application of time-dependent density function theory (TD-DFT) and density functional theory (DFT) calculations. The results of these calculations are further employed to understand the oxidation state, spin states, and potential Fe-Fe bonds in this complex.
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Affiliation(s)
- Lukas Burkhardt
- Faculty of Science , Paderborn University , Warburger Straße 100 , 33098 Paderborn , Germany
| | - Carsten Mueller
- Department of Chemistry , University of Kaiserslautern , Erwin-Schrödinger-Straße 54 , 67663 Kaiserslautern , Germany
| | - Oliver A Groß
- Faculty of Science , Paderborn University , Warburger Straße 100 , 33098 Paderborn , Germany
| | - Yu Sun
- Department of Chemistry , University of Kaiserslautern , Erwin-Schrödinger-Straße 54 , 67663 Kaiserslautern , Germany
| | - Helmut Sitzmann
- Department of Chemistry , University of Kaiserslautern , Erwin-Schrödinger-Straße 54 , 67663 Kaiserslautern , Germany
| | - Matthias Bauer
- Faculty of Science , Paderborn University , Warburger Straße 100 , 33098 Paderborn , Germany.,Center for Sustainable Systems Design (CSSD) , Paderborn University , Warburger Straße 100 , 33098 Paderborn , Germany
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Anju VP, Barik SK, Mondal B, Ramkumar V, Ghosh S. Metallaboranes from Metal Carbonyl Compounds and Their Utilization as Catalysts for Alkyne Cyclotrimerization. Chempluschem 2014; 79:546-551. [DOI: 10.1002/cplu.201400013] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Indexed: 11/09/2022]
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Maekawa M, Daniliuc CG, Jones PG, Hohenberger J, Sutter J, Meyer K, Walter MD. Synthesis of [Cp′Fe(η3-BH4)] and Its Conversion to [Cp′FeBH2]3. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300168] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Geetharani K, Bose SK, Basak D, Suresh VM, Ghosh S. A new entry into ferraborane chemistry: Synthesis and characterization of heteroferraborane complexes. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2010.12.033] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Walter MD, Grunenberg J, White PS. Reactivity studies on [Cp′FeI]2: From iron hydrides to P4-activation. Chem Sci 2011. [DOI: 10.1039/c1sc00413a] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Geetharani K, Kumar Bose S, Pramanik G, Kumar Saha T, Ramkumar V, Ghosh S. An Efficient Route to Group 6 and 8 Metallaborane Compounds: Synthesis ofarachno-[Cp*Fe(CO)B3H8] andcloso-[(Cp*M)2B5H9] (M = Mo, W). Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200801137] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Synthesis and crystal structures of two (cyclopentadienyl)titanium(III) hydroborate complexes, [Cp∗TiCl(BH4)]2 and Cp2Ti(B3H8). J Organomet Chem 2008. [DOI: 10.1016/j.jorganchem.2007.12.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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12
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Green ML, Leach JB, Kelland MA. Formation of ferraboranes from pentaborane(9) or BH3·thf and an electron-rich cyclopentadienyl iron phosphine hydride. J Organomet Chem 2007. [DOI: 10.1016/j.jorganchem.2007.06.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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13
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Green MLH, Leach JB, Kelland MA. Synthesis and Interconversion of Some Small Ruthenaboranes: Reaction of a Ruthenium Borohydride with Pentaborane(9) to Form Larger Ruthenaboranes. Organometallics 2007. [DOI: 10.1021/om700323g] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Malcolm L. H. Green
- Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QR, U.K
| | - John B. Leach
- Department of Chemistry, Manchester Metropolitan University, John Dalton Building, Chester Street, Manchester M1 5GD, U.K
| | - Malcolm A. Kelland
- Department of Mathematics and Natural Science, Faculty of Science and Technology, University of Stavanger, N-4036 Stavanger, Norway
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Reactions of small boranes with ruthenium phosphine hydrides: Oligomerisation of monoborane-tetrahydrofuran to a nido-hexaruthenaborane. J Organomet Chem 2006. [DOI: 10.1016/j.jorganchem.2006.01.027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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15
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Reactions of pentaborane(9) with electron-rich molybdenum and tungsten phosphine polyhydrides. J Organomet Chem 2006. [DOI: 10.1016/j.jorganchem.2006.01.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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16
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Cai S, Hou XF, Chen YQ, Jin GX. Synthesis and structure of heterometallic complexes (RhFe, CoFe) containing bridging 1,2-dicarba-closo-dodecarborane-1,2-dichalcogenolato ligands. Dalton Trans 2006:3736-41. [PMID: 16883399 DOI: 10.1039/b607195c] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The prototype hetero-binuclear complexes containing metal-metal bonds, {CpRh[E2C2(B10H10)]}[Fe(CO)3] (Cp = Cp* = eta 5-Me5C5, E = S(5a), Se(5b); Cp = Cp = eta 5-1,3-tBu2C5H3, E = S(6a), Se(6b)) and {CpCo[E2C2(B10H10)]}[Fe(CO)3] (Cp = Cp* = eta 5-Me5C5, E = S(7a), Se(7b); Cp = Cp = eta 5-C5H5, E = S(8a), Se(8b)) were obtained from the reactions of 16-electron complexes CpRh[E2C2(B10H10)] (Cp = Cp*, E = S(1a), Se(1b); Cp = Cp, E = S(2a), Se(2b)), CpCo[E2C2(B10H10)] (Cp = Cp*, E = S(3a), Se(3b); Cp = Cp, E = S(4a), Se(4b)) with Fe(CO)5 in the presence of Me3NO. The molecular structures of {Cp*Rh[E2C2(B10H10)]}[Fe(CO)3] (E = S(5a), Se(5b)), {CpRh[S2C2(B10H10)]}[Fe(CO)3] (6a) {Cp*Co[S2C2(B10H10)]}[Fe(CO)3] (7a) and {CpCo[S2C2(B10H10)]}[Fe(CO)3] (8a) have been determined by X-ray crystallography. All these complexes were characterized by elemental analysis and IR and NMR spectra.
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Affiliation(s)
- Shuyi Cai
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Material, Department of Chemistry, Fudan University, 200433, Shanghai, P R China
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Macías R, Fehlner TP, Beatty AM. Chemistry of [1-Cp*-arachno-1-IrB4H10] and [1-Cp*-arachno-1-IrB3H9]: Synthesis and Characterization of the New Substituted Iridaboranes [1-Cp*-arachno-1-IrB3H7-2-L], [1-Cp*-arachno-1-IrB2H6-2-L], and [1-Cp*-arachno-1-IrB4H8-2,5-(Br)2] (L = PMe3, PMe2Ph, PMePh2, py, NEt3). Organometallics 2004. [DOI: 10.1021/om049960a] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ramón Macías
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556-5670
| | - Thomas P. Fehlner
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556-5670
| | - Alicia M. Beatty
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556-5670
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Cabon N, Petillon FY, Schollhammer P, Talarmin J, Muir KW. Reaction of BH4−with {Mo2Cp2(μ-SMe)n} species to give tetrahydroborato, hydrido or dimetallaborane compounds: control of product by ancillary ligands. Dalton Trans 2004:2708-19. [PMID: 15514756 DOI: 10.1039/b407564a] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of mono- or dichloro-dimolybdenum(III) complexes [Mo2Cp2(mu-SMe)2(mu-Cl)(mu-Y)] (Cp=eta5-C5H5; 1, Y=SMe; 2, Y=PPh2; 3, Y=Cl) with NaBH4 at room temperature gave in high yields tetrahydroborato (8), hydrido (9) or metallaborane (12) complexes depending on the ancillary ligands. The correct formulation of derivatives and has been unambigously determined by X-ray diffraction methods. That of the hydrido compound 9 has been established in solution by NMR analysis and confirmed by an X-ray study of the mu-azavinylidene derivative [Mo2Cp2(mu-SMe)2(mu-PPh2)(mu-N=CHMe)] (10) obtained from the insertion of acetonitrile into the Mo-H bond of 9. Reaction of NaBH4 with nitrile derivatives, [Mo2Cp2(mu-SMe)4-n(CH3CN)2n]n+(5, n=1; 6 n=2), afforded the tetrahydroborato compound 8, together with a mu-azavinylidene species [Mo2Cp2(mu-SMe)3(mu-N=CHMe)](14), when n=1, and the metallaborane complex 12, together with a mixed borohydrato-azavinylidene derivative [Mo2Cp2(mu-SMe)2(mu-BH4)(mu-N=CHMe)] (13), when n=2. The molecular structures of these complexes have been confirmed by X-ray analysis. Preparations of some of the starting complexes (3 and 4) are also described, as are the molecular structures of the precursors [Mo2Cp2(mu-SMe)2(mu-X)(mu-Y)] (1, X/Y=Cl/SMe; 2, X/Y=Cl/PPh2; 4, X/Y=SMe/PPh2).
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Affiliation(s)
- Nolwenn Cabon
- UMR CNRS 6521, Chimie, Electrochimie Moléculares et Chimie Analytique, UFR Sciences et Techniques, Université de Bretagne Occidentale, France
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