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Su W, Rajeshkumar T, Xiang L, Maron L, Ye Q. Facile Synthesis of Uranium Complexes with a Pendant Borane Lewis Acid and 1,2-Insertion of CO into a U-N Bond. Angew Chem Int Ed Engl 2022; 61:e202212823. [PMID: 36256540 PMCID: PMC10099876 DOI: 10.1002/anie.202212823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Indexed: 11/18/2022]
Abstract
In this contribution, we illustrate uranium complexes bearing a pendant borate (i.e. 1 and 2) or a pendant borane (i.e. 3 and 4) moiety via reaction of the highly strained uranacycle I with various 3-coordinate boranes. Complexes 3 and 4 represent the first examples of uranium complexes with a pendant borane Lewis acid. Moreover, complex 3 was capable of activation of CO, delivering a new CO activation mode, and an abnormal CO 1,2-insertion pathway into a U-N bond. The importance of the pendant borane moiety was confirmed by the controlled experiments.
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Affiliation(s)
- Wei Su
- School of Chemistry and Environmental Engineering, Anhui Polytechnic University, 241000, Wuhu, China.,Department of Chemistry, Southern University of Science and Technology, 1088 Xueyuan Blvd., Xili, Nanshan District, 518055, Shenzhen, China
| | - Thayalan Rajeshkumar
- Laboratoire de Physique et Chimie des Nanoobjets, INSA, CNRS, UPS, Université de Toulouse, 31077, Toulouse, France
| | - Libo Xiang
- Department of Chemistry, Southern University of Science and Technology, 1088 Xueyuan Blvd., Xili, Nanshan District, 518055, Shenzhen, China.,Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany.,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Laurent Maron
- Laboratoire de Physique et Chimie des Nanoobjets, INSA, CNRS, UPS, Université de Toulouse, 31077, Toulouse, France
| | - Qing Ye
- Department of Chemistry, Southern University of Science and Technology, 1088 Xueyuan Blvd., Xili, Nanshan District, 518055, Shenzhen, China.,Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany.,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
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2
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Kiernicki JJ, Norwine EE, Zeller M, Szymczak NK. Substrate Specific Metal-Ligand Cooperative Binding: Considerations for Weak Intramolecular Lewis Acid/Base Pairs. Inorg Chem 2021; 60:13806-13810. [PMID: 34242009 DOI: 10.1021/acs.inorgchem.1c01382] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Metal-ligand cooperative binding modes were interrogated in a series of zinc bis(thiophenoxide) complexes. A weak B-S binding interaction is observed in solution between the weakly Lewis basic thiophenoxide ligands and an appended trialkylborane. The energy of this binding event is dependent upon the strength of the Lewis acid and its proximity to the zinc thiophenoxide.
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Affiliation(s)
- John J Kiernicki
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Emily E Norwine
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Matthias Zeller
- H. C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Nathaniel K Szymczak
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
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3
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Kiernicki JJ, Zeller M, Szymczak NK. Requirements for Late-Stage Hydroboration of Pyridine N-Heterocyclic Carbene Iron(0) Complexes: The Role of Ancillary Ligands. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00307] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- John J. Kiernicki
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Matthias Zeller
- H. C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Nathaniel K. Szymczak
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
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4
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Haziz UF, Haque RA, Zhan SZ, Razali MR. Mononuclear Gold(I) bis-N-heterocyclic carbene: Synthesis and photophysical study. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121137] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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5
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Li Y, Liu J, Huang X, Qu LB, Zhao C, Langer R, Ke Z. Lewis Acid Transition-Metal-Catalyzed Hydrogen Activation: Structures, Mechanisms, and Reactivities. Chemistry 2019; 25:13785-13798. [PMID: 31390099 DOI: 10.1002/chem.201903193] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Indexed: 12/20/2022]
Abstract
As a new type of bifunctional catalyst, the Lewis acid transition-metal (LA-TM) catalysts have been widely applied for hydrogen activation. This study presents a mechanistic framework to understand the LA-TM-catalyzed H2 activation through DFT studies. The mer(trans)-homolytic cleavage, the fac(cis)-homolytic cleavage, the synergetic heterolytic cleavage, and the dissociative heterolytic cleavage should be taken as general mechanisms for the field of LA-TM catalysis. Four typical LA-TM catalysts, the Z-type κ4 -L3 B-Rh complex tri(azaindolyl)borane-Rh, the X-type κ3 -L2 B-Co complex bis-phosphino-boryl (PBP)-Co, the η2 -BC-type κ3 -L2 B-Pd complex diphosphine-borane (DPB)-Pd, and the Z-type κ2 -LB-Pt complex (boryl)iminomethane (BIM)-Pt are selected as representative models to systematically illustrate their mechanistic features and explore the influencing factors on mechanistic variations. Our results indicate that the tri(azaindolyl)borane-Rh catalyst favors the synergetic heterolytic mechanism; the PBP-Co catalyst prefers the mer(trans)-homolytic mechanism; the DPB-Pd catalyst operates through the fac(cis)-homolytic mechanism, whereas the BIM-Pt catalyst tends to undergo the dissociative heterolytic mechanism. The mechanistic variations are determined by the coordination geometry, the LA-TM bonding nature, the electronic structure of the TM center, and the flexibility or steric effect of the LA ligands. The presented mechanistic framework should provide helpful guidelines for LA-TM catalyst design and reaction developments.
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Affiliation(s)
- Yinwu Li
- School of Materials Science & Engineering, PCFM Lab, Department of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Jiahao Liu
- School of Materials Science & Engineering, PCFM Lab, Department of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Xiao Huang
- School of Materials Science & Engineering, PCFM Lab, Department of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Ling-Bo Qu
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Cunyuan Zhao
- School of Materials Science & Engineering, PCFM Lab, Department of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Robert Langer
- Department of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Str., 35032, Marburg, Germany
| | - Zhuofeng Ke
- School of Materials Science & Engineering, PCFM Lab, Department of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China
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6
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Ueno A, Watanabe K, Daniliuc CG, Kehr G, Erker G. Unsaturated vicinal frustrated phosphane/borane Lewis pairs as ligands in gold(i) chemistry. Chem Commun (Camb) 2019; 55:4367-4370. [PMID: 30912538 DOI: 10.1039/c9cc01136f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The P/B FLP 6, formed by the 1,1-hydroboration of dimesitylphosphino(trimethylsilyl)acetylene with HB(C6F5)2 forms the Au(i)X complexes 9a (X: Cl) and 10a (X: NTf2), respectively. Both show marked AuB interactions. The P/B FLP isomer 8, featuring the bulky SiMe3 substituent at the carbon adjacent to boron forms gold complexes 9b and 10b, both of which show weaker AuB interactions. Complex 10a was employed in the catalytic hydroamination of a series of alkynes with p-toluidine. Complexes 9 and 10 were characterized by X-ray diffraction.
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Affiliation(s)
- Atsushi Ueno
- Organisch-Chemisches Institut der Universität Münster, Corrensstraße 40, 48149 Münster, Germany.
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7
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Kiernicki JJ, Zeller M, Szymczak NK. Requirements for Lewis Acid-Mediated Capture and N-N Bond Cleavage of Hydrazine at Iron. Inorg Chem 2019; 58:1147-1154. [PMID: 30628782 PMCID: PMC6467759 DOI: 10.1021/acs.inorgchem.8b02433] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An iron complex bearing a pyridine(dicarbene) pincer was designed to probe the requirements of Lewis acid-enabled N2H4 capture and subsequent N-N bond cleavage. Appended boron Lewis acids were installed by two methods to circumvent the incompatibilities associated with Lewis acid/base quenching of free carbenes and boranes. N2H4 capture by borane Lewis acids is dependent on both the Lewis acidity and the steric profile about boron. A substitutionally inert primary coordination sphere at iron prevents an Fe-N2H4 interaction as well as N-N bond homolysis upon reduction.
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Affiliation(s)
- John J. Kiernicki
- Department of Chemistry, University of Michigan, 930 N. University Ave., Ann Arbor, MI 48109
| | - Matthias Zeller
- H. C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, IN 47907
| | - Nathaniel K. Szymczak
- Department of Chemistry, University of Michigan, 930 N. University Ave., Ann Arbor, MI 48109
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8
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Schroeter F, Císařová I, Soellner J, Herdtweck E, Strassner T. Electron-poor hemilabile dicationic palladium NHC complexes - synthesis, structure and catalytic activity. Dalton Trans 2018; 47:16638-16650. [PMID: 30421765 DOI: 10.1039/c8dt03373k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
We present a new class of dicationic palladium NHC complexes with two carbene ligands bearing different aryl substituents and a hemilabile pyrimidyl group. They can either be synthesized from the imidazolium salts via the silver transmetalation route to a halide-free palladium(ii) precursor or by direct deprotonation by palladium acetate. For four complexes we could determine their solid-state structures by X-ray diffraction experiments. Insight gained by NMR spectroscopy and DFT calculations revealed that in solution the two potentially bidentate ligands interchange between chelating and non-chelating coordination modes. The preference of these coordination modes is governed by the steric influence of the different ligands. The complexes were shown to be active catalysts for the hydroarylation of alkynes, and their performance was rationalized by DFT calculations.
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Affiliation(s)
- Felix Schroeter
- Fakultät Chemie und Lebensmittelchemie, TU Dresden, 01062 Dresden, Germany.
| | - Ivana Císařová
- Charles University Prague, Department of Inorganic Chemistry, Hlavova 2030/8, 12843 Prague 2, Czech Republic
| | - Johannes Soellner
- Fakultät Chemie und Lebensmittelchemie, TU Dresden, 01062 Dresden, Germany.
| | - Eberhardt Herdtweck
- Molecular Catalysis, Catalysis Research Center and Department of Chemistry, Technische Universität München, Lichtenbergstraße 4, 85747 Garching bei München, Germany
| | - Thomas Strassner
- Fakultät Chemie und Lebensmittelchemie, TU Dresden, 01062 Dresden, Germany.
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9
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Ke Z, Li Y, Hou C, Liu Y. Homogeneously catalyzed hydrogenation and dehydrogenation reactions – From a mechanistic point of view. PHYSICAL SCIENCES REVIEWS 2018. [DOI: 10.1515/psr-2017-0038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Homogeneously catalyzed hydrogenation/dehydrogenation reactions represent not only one of the most synthetically important chemical transformations, but also a promising way to renewably utilize the hydrogen energy. In order to rationally design efficient homogeneous catalysts for hydrogenations/dehydrogenations, it is of fundamental importance to understand their reaction mechanisms in detail. With this aim in mind, we herein provide a brief overview of the mechanistic understanding and related catalyst design strategies. Hydrogenations and dehydrogenations represent the reverse process of each other, and involve the activation/release of H2 and the insertion/elimination of hydride as major steps. The mechanisms discussed in this chapter include the cooperation (bifunctional) mechanism and the non-cooperation mechanisms. Non-cooperation mechanisms usually involve single-site transition metal (TM) catalysts or transition metal hydride (TM-H) catalysts. Cooperation mechanisms usually operate in the state-of-the-art bifunctional catalysts, including Lewis-base/transition-metal (LB-TM) catalysts, Lewis-acid/transition-metal (LA-TM) catalysts, Lewis-acid/Lewis-base (LA-LB; the so-called frustrated Lewis pairs - FLPs) catalysts, newly developed ambiphilic catalysts, and bimetallic transition-metal/transition-metal (TM-TM) catalysts. The influence of the ligands, the electronic structure of the metal, and proton shuttle on the reaction mechanism are also discussed to improve the understanding of the factors that can govern mechanistic preferences. The content presented in this chapter should both inspire experimental and theoretical chemists concerned with homogeneously catalyzed hydrogenation and dehydrogenation reactions, and provide valuable information for future catalyst design.
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10
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Boom DA, Ehlers AW, Nieger M, Devillard M, Bouhadir G, Bourissou D, Slootweg JC. Gold(I) Complexes of the Geminal Phosphinoborane tBu 2PCH 2BPh 2. ACS OMEGA 2018; 3:3945-3951. [PMID: 29732451 PMCID: PMC5928493 DOI: 10.1021/acsomega.8b00143] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 02/21/2018] [Indexed: 05/21/2023]
Abstract
In this work, we explored the coordination properties of the geminal phosphinoborane tBu2PCH2BPh2 (2) toward different gold(I) precursors. The reaction of 2 with an equimolar amount of the sulfur-based complex (Me2S)AuCl resulted in displacement of the SMe2 ligand and formation of linear phosphine gold(I) chloride 3. Using an excess of ligand 2, bisligated complex 4 was formed and showed dynamic behavior at room temperature. Changing the gold(I) metal precursor to the phosphorus-based complex, (Ph3P)AuCl impacted the coordination behavior of ligand 2. Namely, the reaction of ligand 2 with (Ph3P)AuCl led to the heterolytic cleavage of the gold-chloride bond, which is favored over PPh3 ligand displacement. To the best of our knowledge, 2 is the first example of a P/B-ambiphilic ligand capable of cleaving the gold-chloride bond. The coordination chemistry of 2 was further analyzed by density functional theory calculations.
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Affiliation(s)
- Devin
H. A. Boom
- Van
’t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, P.O. Box 94157, 1090
GD Amsterdam, The Netherlands
| | - Andreas W. Ehlers
- Van
’t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, P.O. Box 94157, 1090
GD Amsterdam, The Netherlands
- Department
of Chemistry, University of Johannesburg, Auckland Park, Johannesburg 2006, South Africa
| | - Martin Nieger
- Department
of Chemistry, University of Helsinki, P.O. Box 55, 00014 Helsinki, Finland
| | - Marc Devillard
- CNRS,
Université Paul Sabatier, Laboratoire Hétérochimie
Fondamentale et Appliquée (LHFA, UMR 5069), 118 Route de Narbonne, 31062 Toulouse Cedex 09, France
| | - Ghenwa Bouhadir
- CNRS,
Université Paul Sabatier, Laboratoire Hétérochimie
Fondamentale et Appliquée (LHFA, UMR 5069), 118 Route de Narbonne, 31062 Toulouse Cedex 09, France
| | - Didier Bourissou
- CNRS,
Université Paul Sabatier, Laboratoire Hétérochimie
Fondamentale et Appliquée (LHFA, UMR 5069), 118 Route de Narbonne, 31062 Toulouse Cedex 09, France
| | - J. Chris Slootweg
- Van
’t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, P.O. Box 94157, 1090
GD Amsterdam, The Netherlands
- E-mail: (J.C.S.)
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11
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Hazlehurst RJ, Hendriks SW, Boyle PD, Blacquiere JM. Ligand Dynamics and Aerobic Allylic Oxidation with Bifunctional Ni(NHC) Complexes. ChemistrySelect 2017. [DOI: 10.1002/slct.201701609] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Richard J. Hazlehurst
- Department of Chemistry; University of Western Ontario; London, Ontario, Canada, N6 A 5B7
| | - Scott W.E. Hendriks
- Department of Chemistry; University of Western Ontario; London, Ontario, Canada, N6 A 5B7
| | - Paul D. Boyle
- Department of Chemistry; University of Western Ontario; London, Ontario, Canada, N6 A 5B7
| | - Johanna M. Blacquiere
- Department of Chemistry; University of Western Ontario; London, Ontario, Canada, N6 A 5B7
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12
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Toure M, Charles L, Chendo C, Viel S, Chuzel O, Parrain JL. Straightforward and Controlled Shape Access to Efficient Macrocyclic Imidazolylboronium Anion Receptors. Chemistry 2016; 22:8937-42. [DOI: 10.1002/chem.201601174] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Momar Toure
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313; 13397 Marseille France
| | - Laurence Charles
- Aix Marseille Université, CNRS, ICR UMR 7273; 13397 Marseille France
| | - Christophe Chendo
- Aix Marseille Université, CNRS, ICR UMR 7273; 13397 Marseille France
| | - Stéphane Viel
- Aix Marseille Université, CNRS, ICR UMR 7273; 13397 Marseille France
- Institut Universitaire de France; 75005 Paris France
| | - Olivier Chuzel
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313; 13397 Marseille France
| | - Jean-Luc Parrain
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313; 13397 Marseille France
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