1
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Yao J, Shao L, Kang X, Zhu M, Huo X, Wang X. Direct α-Arylation of Benzo[ b]furans Catalyzed by a Pd 3 Cluster. J Org Chem 2024; 89:1719-1726. [PMID: 38204281 DOI: 10.1021/acs.joc.3c02428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
As an interim paradigm for the catalysts between those based on more conventional mononuclear molecular Pd complexes and Pdn nanoparticles widely used in organic synthesis, polynuclear palladium clusters have attracted great attention for their unique reactivity and electronic properties. However, the development of Pd cluster catalysts for organic transformations and mechanistic investigations is still largely unexploited. Herein, we disclose the use of trinuclear palladium (Pd3Cl) species as an active catalyst for the direct C-H α-arylation of benzo[b]furans with aryl iodides to afford 2-arylbenzofurans in good yields under mild conditions. With this method, broad substrate adaptability was observed, and several drug intermediates were synthesized in high yields. Mechanistic studies indicated that the Pd3 core most likely remained intact throughout the reaction course.
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Affiliation(s)
- Jian Yao
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiaotong University, 800 Dongchuan Road, Shanghai 200240, China
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Lili Shao
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Xi Kang
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials, Anhui University, Hefei 230601, China
| | - Manzhou Zhu
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials, Anhui University, Hefei 230601, China
| | - Xiaohong Huo
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiaotong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Xiaoming Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
- School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou 310024, China
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2
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Zhang P, Newhouse TR. Palladium-Catalyzed Carbonylative Difunctionalization of Unactivated Alkenes Initiated by Unstabilized Enolates. Angew Chem Int Ed Engl 2023; 62:e202307455. [PMID: 37319375 PMCID: PMC11090370 DOI: 10.1002/anie.202307455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 06/13/2023] [Accepted: 06/14/2023] [Indexed: 06/17/2023]
Abstract
This report describes the first example of palladium-catalyzed carbonylative difunctionalization of unactivated alkenes initiated by enolate nucleophiles. The approach involves initiation by an unstabilized enolate nucleophile under an atmospheric pressure of CO and termination with a carbon electrophile. This process is compatible with a diverse range of electrophiles, including aryl, heteroaryl, and vinyl iodides to yield synthetically useful 1,5-diketone products, which were demonstrated to be precursors for multi-substituted pyridines. A PdI -dimer complex with two bridging CO units was observed although its role in catalysis is not yet understood.
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Affiliation(s)
- Pengpeng Zhang
- Department of Chemistry, Yale University, 225 Prospect Street, PO Box 208107, New Haven, CT, 06511
| | - Timothy R. Newhouse
- Department of Chemistry, Yale University, 225 Prospect Street, PO Box 208107, New Haven, CT, 06511
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3
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Hatano A, Sugawa T, Mimura R, Kataoka S, Yamamoto K, Omoda T, Zhu B, Tian Y, Sakaki S, Murahashi T. Isolation and Structures of Polyarene Palladium Nanoclusters. J Am Chem Soc 2023. [PMID: 37276484 PMCID: PMC10360153 DOI: 10.1021/jacs.3c02849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We report that surrounding coordination of neutral six-membered arene rings affords molecularly well-defined organotransition metal nanoclusters. With the use of [2.2]paracyclophane as the face-capping arene ligand, we have isolated two polyarene palladium nanoclusters, one consisting of a hexakis-arene ligand shell and a hexagonal close-packed Pd13 anticuboctahedron trichloride core, and the other consisting of an octakis-arene ligand shell and a non-close-packed Pd17 square gyrobicupola dichloride core, both with Pd-Pd direct bonding. The μ4-facial coordination mode of arene was discovered through the structural characterization of the Pd13 cluster. Their Pd13 and Pd17 cores, which are distinct from the previously identified face-centered-cubic Pd13 core surrounded by seven-membered cycloheptatrienyl, are explained by stereochemical and theoretical analyses.
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Affiliation(s)
- Ayaka Hatano
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Tsuyoshi Sugawa
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Rei Mimura
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Shunichi Kataoka
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Koji Yamamoto
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Tsubasa Omoda
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Bo Zhu
- Institute for Integrated Cell-Material Sciences (iCeMS), Kyoto University, Sakyo-ku, Kyoto 606-8302, Japan
| | - Yu Tian
- Institute for Integrated Cell-Material Sciences (iCeMS), Kyoto University, Sakyo-ku, Kyoto 606-8302, Japan
| | - Shigeyoshi Sakaki
- Institute for Integrated Cell-Material Sciences (iCeMS), Kyoto University, Sakyo-ku, Kyoto 606-8302, Japan
| | - Tetsuro Murahashi
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552, Japan
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4
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Umehara Y, Usui R, Wada Y, Sunada Y. Dinuclear and tetranuclear group 10 metal complexes constructed from linear tetrasilane comprising both Si-H and Si-Si moieties. Commun Chem 2023; 6:93. [PMID: 37188952 DOI: 10.1038/s42004-023-00892-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Accepted: 05/02/2023] [Indexed: 05/17/2023] Open
Abstract
The activation of Si-H bonds and/or Si-Si bonds in organosilicon compounds by transition-metal species plays a crucial role for the production of functional organosilicon compounds. Although group-10-metal species are frequently used to activate Si-H and/or Si-Si bonds, so far, systematic investigation to clarify the preferences of these metal species with respect to the activation of Si-H and/or Si-Si bonds remain elusive. Here, we report that platinum(0) species that bear isocyanide or N-heterocyclic-carbene (NHC) ligands selectively activates the terminal Si-H bonds of the linear tetrasilane Ph2(H)SiSiPh2SiPh2Si(H)Ph2 in a stepwise manner, whereby the Si-Si bonds remain intact. In contrast, analogous palladium(0) species are preferably inserted into the Si-Si bonds of the same linear tetrasilane, whereby the terminal Si-H bonds remain intact. Substitution of the terminal hydride groups in Ph2(H)SiSiPh2SiPh2Si(H)Ph2 with chloride groups leads to the insertion of platinum(0) isocyanide into all Si-Si bonds to afford an unprecedented zig-zag Pt4 cluster.
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Affiliation(s)
- Yoshihiko Umehara
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8505, Japan
| | - Ryosuke Usui
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8505, Japan
| | - Yoshimasa Wada
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8505, Japan
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8505, Japan
| | - Yusuke Sunada
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8505, Japan.
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8505, Japan.
- JST PRESTO, Honcho, Kawaguchi, Saitama, 332-0012, Japan.
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5
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Yao J, Bai J, Kang X, Zhu M, Guo Y, Wang X. Non-directed C-H arylation of electron-deficient arenes by synergistic silver and Pd 3 cluster catalysis. NANOSCALE 2023; 15:3560-3565. [PMID: 36723135 DOI: 10.1039/d2nr05825a] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Transition-metal clusters have attracted great attention in catalysis due to their unique reactivity and electronic properties, especially for novel substrate binding and activation modes at the bridging coordination sites of metal clusters. Although palladium complexes have demonstrated outstanding catalytic performance in various transformations, the catalytic behaviors of polynuclear palladium clusters in many important synthetic methodologies remain much less explored so far. Herein, we disclose the use of an atomically defined tri-nuclear palladium (Pd3Cl) species as a catalyst precursor in Ag(I)-assisted direct C-H arylation with aryl iodides under mild conditions. This catalyst system leads to the formation of synthetically important biaryls in good yields with high site selectivities without the assistance of directing groups.
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Affiliation(s)
- Jian Yao
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China.
| | - Jiahui Bai
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China.
| | - Xi Kang
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials, Anhui University, Hefei 230601, China
| | - Manzhou Zhu
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials, Anhui University, Hefei 230601, China
| | - Yinlong Guo
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China.
| | - Xiaoming Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China.
- School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou 310024, China
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6
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Kudo E, Oba Y, Yamamoto K, Murahashi T. Di- and trinuclear sandwich complexes of a cross-conjugated fulvene. Dalton Trans 2023; 52:1568-1573. [PMID: 36651809 DOI: 10.1039/d2dt03521a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
We report di- and trinuclear palladium sandwich complexes of cross-π-conjugated fulvenes. Structural and theoretical analysis revealed that a fulvene sandwich framework holds a metal-metal bonded moiety, where the dinuclear and trinuclear bonds feature strong donation and back-donation, respectively. The trinuclear fulvene sandwich complex undergoes a unique reversible extrusion of a Pd atom from inside to outside the sandwich framework.
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Affiliation(s)
- Eiji Kudo
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8552, Japan.
| | - Yuki Oba
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8552, Japan.
| | - Koji Yamamoto
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8552, Japan.
| | - Tetsuro Murahashi
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8552, Japan.
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7
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Firsan S, Sivakumar V, Colacot TJ. Emerging Trends in Cross-Coupling: Twelve-Electron-Based L 1Pd(0) Catalysts, Their Mechanism of Action, and Selected Applications. Chem Rev 2022; 122:16983-17027. [PMID: 36190916 PMCID: PMC9756297 DOI: 10.1021/acs.chemrev.2c00204] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Monoligated palladium(0) species, L1Pd(0), have emerged as the most active catalytic species in the cross-coupling cycle. Today, there are methods available to generate the highly active but unstable L1Pd(0) catalysts from stable precatalysts. While the size of the ligand plays an important role in the formation of L1Pd(0) during in situ catalysis, the latter can be precisely generated from the precatalyst by various technologies. Computational, kinetic, and experimental studies indicate that all three steps in the catalytic cycle─oxidative addition, transmetalation, and reductive elimination─contain monoligated Pd. The synthesis of precatalysts, their mode of activation, application studies in model systems, as well as in industry are discussed. Ligand parametrization and AI based data science can potentially help predict the facile formation of L1Pd(0) species.
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Affiliation(s)
- Sharbil
J. Firsan
- Science
and Lab Solutions−Chemistry, MilliporeSigma, 6000 North Teutonia Avenue, Milwaukee, Wisconsin53209, United States
| | - Vilvanathan Sivakumar
- Merck
Life Science Pvt Ltd, No-12, Bommasandra-Jigani Link Road, Industrial Area, Bangalore560100, India
| | - Thomas J. Colacot
- Science
and Lab Solutions−Chemistry, MilliporeSigma, 6000 North Teutonia Avenue, Milwaukee, Wisconsin53209, United States,
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8
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Sunada Y, Yamaguchi K, Suzuki K. “Template synthesis” of discrete metal clusters with two- or three-dimensional architectures. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214673] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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9
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Kojima N, Kato M, Sunada Y. Discrete palladium clusters that consist of two mutually bisecting perpendicular planes. Chem Sci 2022; 13:7610-7615. [PMID: 35872831 PMCID: PMC9241975 DOI: 10.1039/d2sc02302d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 06/08/2022] [Indexed: 11/24/2022] Open
Abstract
The construction of novel molecules with unprecedented alignments of the constituent elements has revolutionized the field of functional materials. The arrangement of two or more planar subunits in a mutually perpendicular fashion is a frequently encountered approach to produce novel functional materials. Previous examples of such materials can be categorized into two well-investigated families: spiro-conjugated and dumbbell-shaped structures, wherein the two planes are aligned orthogonally via a single atom or an axis, respectively. This article describes a third family: reaction of [Pd(CNtBu)2]3 with Sn3Me8 or Ge6Me12 afforded a Pd7Sn4 cluster and a Pd8Ge6 cluster that consist of two mutually bisecting perpendicular planes. In the Pd7Sn4 cluster, the two equivalent Pd5Sn2 planes share three palladium atoms that include a dihedral angle of 85.6°. The construction of Pd7Sn4 and Pd8Ge6 clusters that consist of two mutually bisecting perpendicular planes was accomplished by the reaction of [Pd(CNtBu)2]3 with Me3Sn–SnMe2–SnMe3 or Ge6Me12.![]()
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Affiliation(s)
- Naoya Kojima
- Department of Applied Chemistry, School of Engineering, The University of Tokyo 4-6-1, Komaba, Meguro-ku Tokyo 153-8505 Japan
| | - Misaki Kato
- Department of Applied Chemistry, School of Engineering, The University of Tokyo 4-6-1, Komaba, Meguro-ku Tokyo 153-8505 Japan
| | - Yusuke Sunada
- Department of Applied Chemistry, School of Engineering, The University of Tokyo 4-6-1, Komaba, Meguro-ku Tokyo 153-8505 Japan .,Institute of Industrial Science, The University of Tokyo 4-6-1, Komaba, Meguro-ku Tokyo 153-8505 Japan
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10
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Liang H, Rio J, Perrin L, Payard PA. Salt-Enhanced Oxidative Addition of Iodobenzene to Pd: An Interplay Between Cation, Anion, and Pd-Pd Cooperative Effects. Inorg Chem 2022; 61:7935-7944. [PMID: 35522732 DOI: 10.1021/acs.inorgchem.2c00565] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Halide salts facilitate the oxidative addition of organic halides to Pd(0). This phenomenon originates from a combination of anionic, cationic, and Pd-Pd cooperative effects. Exhaustive computational exploration at the density functional theory level of the complexes obtained from [Pd0(PPh3)2] and a salt (NMe4Cl or LiCl) showed that chlorides promote phosphine release, leading to a mixture of mononuclear and dinuclear Pd(0) complexes. Anionic Pd(0) dinuclear complexes exhibit a cooperativity between Pd(0) centers, which favors the oxidative addition of iodobenzene. The higher activity of Pd(0) dimers toward oxidative addition rationalizes the previously reported kinetic laws. In the presence of Li+, the oxidative addition to mononuclear [Pd0L(Li2Cl2)] is estimated barrierless. LiCl coordination polarizes Pd(0), enlarging both the electrophilicity and the nucleophilicity of the complex, which promotes both coordination of the substrate and the subsequent insertion into the C-I bond. These conclusions are paving the way to the rational use of the salt effects in catalysis for the activation of more challenging bonds.
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Affiliation(s)
- Haosheng Liang
- Univ de Lyon, Université Claude Bernard Lyon I, CNRS, INSA, CPE, UMR 5246, ICBMS, 1 rue Victor Grignard, F-69622 Villeurbanne cedex, France
| | - Jordan Rio
- Univ de Lyon, Université Claude Bernard Lyon I, CNRS, INSA, CPE, UMR 5246, ICBMS, 1 rue Victor Grignard, F-69622 Villeurbanne cedex, France
| | - Lionel Perrin
- Univ de Lyon, Université Claude Bernard Lyon I, CNRS, INSA, CPE, UMR 5246, ICBMS, 1 rue Victor Grignard, F-69622 Villeurbanne cedex, France
| | - Pierre-Adrien Payard
- Univ de Lyon, Université Claude Bernard Lyon I, CNRS, INSA, CPE, UMR 5246, ICBMS, 1 rue Victor Grignard, F-69622 Villeurbanne cedex, France
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11
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Yamamoto K, Sugawa T, Kondo M, Masaoka S, Murahashi T. Bridging coordination of acenaphthylene to a Pd 3 chain or a Pd 4 sheet cluster. Dalton Trans 2022; 51:1901-1906. [PMID: 35018918 DOI: 10.1039/d1dt04071e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The coordination behaviour of multinuclear clusters to fused arene ligands is of continuous interest due to its relevance to metal catalysts supported by graphitic carbon materials. Herein, we report the bridging coordination behaviour of acenaphthylene to a Pd3 or a Pd4 cluster. A bis-acenaphthylene Pd3 chain cluster and an acenaphthylene-COT Pd4 sheet cluster were isolated, and the μ3-π-coordination mode or the μ4-oxidative π-addition mode of the acenaphthylene ligand in each cluster was elucidated by X-ray structure analysis.
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Affiliation(s)
- Koji Yamamoto
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8552, Japan.
| | - Tsuyoshi Sugawa
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8552, Japan.
| | - Mio Kondo
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Shigeyuki Masaoka
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Tetsuro Murahashi
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8552, Japan.
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12
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Schulz J, Cisarova I, Gyepes R, Štěpnička P. Metalation of a gold(I) metalloligand with P,C-bridging phosphinoferrocenyl groups enables construction of defined multimetallic arrays. Dalton Trans 2022; 51:6410-6415. [DOI: 10.1039/d2dt00850e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reactions of gold(I) metalloligand [Au2{µ(P,C)-Ph2Pfc}2], where fc stands for ferrocene-1,1ʹ-diyl, with bare or ligand-stabilised group 11 metal ions open an access to diverse oligometallic clusters stabilised by Au-Au, Au-Ag...
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13
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Ghosh S, Shilpa S, Athira C, Sunoj RB. Role of Additives in Transition Metal Catalyzed C–H Bond Activation Reactions: A Computational Perspective. Top Catal 2021. [DOI: 10.1007/s11244-021-01527-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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14
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Usui R, Sunada Y. Triangular Palladium Cluster from Activation of the Si-Si Bond in a Disilane with Phosphine Pendants. Inorg Chem 2021; 60:15101-15105. [PMID: 34558907 DOI: 10.1021/acs.inorgchem.1c02043] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A disilane that contains two diphenylphosphino moieties, (Ph2PCH2)Ph2Si-SiPh2(CH2PPh), was readily synthesized from the reaction of ClPh2Si-SiPh2Cl with (tmeda)Li(CH2PPh2). Treatment of the thus-obtained disilane with the palladium(0) precursor [Pd(CNtBu)2]3 led to the exclusive formation of a trinuclear palladium cluster in which three palladium atoms are arranged in a triangular fashion. Single-crystal X-ray diffraction analysis of the obtained triangular cluster revealed that novel silylphosphido chelating ligands were formed via a skeletal rearrangement of the ligand framework.
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Affiliation(s)
| | - Yusuke Sunada
- JST PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012 Japan
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15
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Shimamoto K, Sunada Y. Nuclearity expansion in Pd clusters triggered by the migration of a phenyl group in cyclooligosilanes. Chem Commun (Camb) 2021; 57:7649-7652. [PMID: 34254083 DOI: 10.1039/d1cc02682h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Heptanuclear palladium clusters with six palladium atoms in a planar arrangement were obtained from the reaction of [Pd(CNtBu)2]3 with Ph-substituted cyclotetrasilane or cyclopentasilane via the migration of a phenyl group. The molecular structures of these clusters as well as those of two possible intermediates were determined by single-crystal X-ray diffraction analyses.
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Affiliation(s)
- Kento Shimamoto
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 4-6-1, Komaba, Meguro-ku, Tokyo 153-8505, Japan
| | - Yusuke Sunada
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 4-6-1, Komaba, Meguro-ku, Tokyo 153-8505, Japan and Institute of Industrial Science, The University of Tokyo, 4-6-1, Komaba, Meguro-ku, Tokyo 153-8505, Japan and JST PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan
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16
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Inoue I, Yamamoto K, Sakaki S, Murahashi T. Heterometallic d 8 -d 10 Coupling of Rh(I) and M(0) (M=Pd, Pt) in a Sandwich Framework of π-Conjugated Ligands. Chemistry 2021; 27:10558-10562. [PMID: 34003537 DOI: 10.1002/chem.202101133] [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: 03/30/2021] [Indexed: 11/11/2022]
Abstract
A heterometallic M-M' bond formation is a key to construct atomically precise bimetallic clusters and materials. However, it is sometimes not straightforward to construct a heterometallic M-M' bond through conventional methods including redox condensation. Here, we found that a sandwich framework of π-conjugated unsaturated hydrocarbon ligands provides a unique coordination environment that facilitates unusual coupling of d8 RhI and d10 M0 (M=Pd, Pt). The molecular orbital analysis showed that the electron-accepting ability of the sandwich framework through back-donation allows the formation of a dσ-type Rh-Pd bond in a (d-d)18 electron system.
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Affiliation(s)
- Iori Inoue
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 1528552, Japan
| | - Koji Yamamoto
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 1528552, Japan
| | - Shigeyoshi Sakaki
- Elements Strategy Initiative for Catalysts and Batteries, Kyoto University, Kyoto, 6158510, Japan
| | - Tetsuro Murahashi
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 1528552, Japan
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17
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Babahan İ, Fırıncı R, Özdemir N, Emin Günay M. Synthesis, characterization and catalytic activity of N-heterocyclic carbene ligated Schiff base palladacycles. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120360] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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18
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Scattolin T, Bortolamiol E, Palazzolo S, Caligiuri I, Perin T, Canzonieri V, Demitri N, Rizzolio F, Cavallo L, Dereli B, Mane MV, Nolan SP, Visentin F. The anticancer activity of an air-stable Pd(I)-NHC (NHC = N-heterocyclic carbene) dimer. Chem Commun (Camb) 2021; 56:12238-12241. [PMID: 32926011 DOI: 10.1039/d0cc03883k] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A new dinuclear Pd(i) complex coordinating two bis(NHC) ligands revealed an unsuspected stability despite the unsaturation of the two metal centres. Even more surprisingly, the compound showed high and selective antiproliferative activity against different cancer cell lines and ovarian cancer tumoroids, and the mechanism of action was different from that of cisplatin.
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Affiliation(s)
- Thomas Scattolin
- Department of Chemistry and Center for Sustainable Chemistry, Ghent University, Krijgslaan 281 (S-3), Ghent, 9000, Belgium
| | - Enrica Bortolamiol
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari, Campus Scientifico Via Torino 155, Venezia-Mestre 30174, Italy.
| | - Stefano Palazzolo
- Pathology Unit, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, Aviano 33081, Italy
| | - Isabella Caligiuri
- Pathology Unit, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, Aviano 33081, Italy
| | - Tiziana Perin
- Pathology Unit, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, Aviano 33081, Italy
| | - Vincenzo Canzonieri
- Pathology Unit, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, Aviano 33081, Italy and Department of Medical, Surgical and Health Sciences, Università degli Studi di Trieste, Strada di Fiume 447, Trieste, Italy
| | - Nicola Demitri
- Elettra - Sincrotrone Trieste, S.S. 14 Km 163.5 in Area Science Park, Basovizza 34149, Trieste, Italy
| | - Flavio Rizzolio
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari, Campus Scientifico Via Torino 155, Venezia-Mestre 30174, Italy. and Pathology Unit, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, Aviano 33081, Italy
| | - Luigi Cavallo
- KAUST Catalysis Centre, KCC, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Busra Dereli
- KAUST Catalysis Centre, KCC, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Manoj V Mane
- KAUST Catalysis Centre, KCC, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Steven P Nolan
- Department of Chemistry and Center for Sustainable Chemistry, Ghent University, Krijgslaan 281 (S-3), Ghent, 9000, Belgium
| | - Fabiano Visentin
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari, Campus Scientifico Via Torino 155, Venezia-Mestre 30174, Italy.
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19
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20
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Fricke C, Sperger T, Mendel M, Schoenebeck F. Catalysis with Palladium(I) Dimers. Angew Chem Int Ed Engl 2021; 60:3355-3366. [PMID: 33058375 PMCID: PMC7898807 DOI: 10.1002/anie.202011825] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 10/09/2020] [Indexed: 12/16/2022]
Abstract
Dinuclear PdI complexes have found widespread applications as diverse catalysts for a multitude of transformations. Initially their ability to function as pre-catalysts for low-coordinated Pd0 species was harnessed in cross-coupling. Such PdI dimers are inherently labile and relatively sensitive to oxygen. In recent years, more stable dinuclear PdI -PdI frameworks, which feature bench-stability and robustness towards nucleophiles as well as recoverability in reactions, were explored and shown to trigger privileged reactivities via dinuclear catalysis. This includes the predictable and substrate-independent, selective C-C and C-heteroatom bond formations of poly(pseudo)halogenated arenes as well as couplings of arenes with relatively weak nucleophiles, which would not engage in Pd0 /PdII catalysis. This Minireview highlights the use of dinuclear PdI complexes as both pre-catalysts for the formation of highly active Pd0 and PdII -H species as well as direct dinuclear catalysts. Focus is set on the mechanistic intricacies, the speciation and the impacts on reactivity.
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Affiliation(s)
- Christoph Fricke
- Institute of Organic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Theresa Sperger
- Institute of Organic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Marvin Mendel
- Institute of Organic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
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21
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Zhou X, Zhang G, Huang R, Huang H. Palladium-Catalyzed Allyl-Allyl Reductive Coupling of Allylamines or Allylic Alcohols with H 2 as Sole Reductant. Org Lett 2021; 23:365-369. [PMID: 33400881 DOI: 10.1021/acs.orglett.0c03865] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Catalytic carbon-carbon bond formation building on reductive coupling is a powerful method for the preparation of organic compounds. The identification of environmentally benign reductants is key for establishing an efficient reductive coupling reaction. Herein an efficient strategy enabling H2 as the sole reductant for the palladium-catalyzed allyl-allyl reductive coupling reaction is described. A wide range of allylamines and allylic alcohols as well as allylic ethers proceed smoothly to deliver the C-C coupling products under 1 atm of H2. Kinetic studies suggested that the dinuclear palladium species was involved in the catalytic cycle.
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Affiliation(s)
- Xibing Zhou
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Guoying Zhang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
| | - Renbin Huang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Hanmin Huang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China.,Center for Excellence in Molecular Synthesis of CAS, Hefei 230026, P. R. China.,State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
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22
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Liu Q, Zhao L. Low Valent Palladium Clusters: Synthesis, Structures and Catalytic Applications. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.202000378] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Qian Liu
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Department of Chemistry Tsinghua University Beijing 100084 China
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23
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Usui R, Sunada Y. Insertion of Ni(0) and Pd(0) precursors into the Si-Si bond of a disilane with two hypercoordinate silicon atoms. Chem Commun (Camb) 2020; 56:8464-8467. [PMID: 32584334 DOI: 10.1039/d0cc03211e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The activation of the silicon-silicon bond in disilane Ph2Si(μ-PzMe2)2SiPh2 (1), which possesses two five-coordinate silicon centers, was achieved by a reaction with Pd(0) or Ni(0) precursors of modest steric demand to afford a dinuclear Pd complex (2) or two types of mononuclear Ni complexes (3 and 4), respectively.
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Affiliation(s)
- Ryosuke Usui
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 4-6-1, Komaba, Meguro-ku, Tokyo 153-8505, Japan
| | - Yusuke Sunada
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 4-6-1, Komaba, Meguro-ku, Tokyo 153-8505, Japan and Institute of Industrial Science, The University of Tokyo, 4-6-1, Komaba, Meguro-ku, Tokyo 153-8505, Japan.
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24
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Yamamoto K, Sawada J, Murahashi T. Thiophene and Selenophene Binding at a Pd 3 Cluster Site. Chemistry 2020; 26:8388-8392. [PMID: 32364628 DOI: 10.1002/chem.202001796] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Indexed: 01/10/2023]
Abstract
We report the triply bridging coordination of thiophene and selenophene to a trinuclear metal cluster site. The triply bridging coordination of selenophene at a Pd3 site forms a unique spiro-type Pd5 cluster. Furthermore, either thiophene or selenophene is accommodated stably at a Pd3 site supported by a backside μ3 -cyclooctatetraene ligand through the face-capping μ3 -coordination. The Pd3 site supported by the cyclooctatetraene ligand showed higher binding affinity of benzene over thiophene, although a Pd2 site strongly favors thiophene over benzene.
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Affiliation(s)
- Koji Yamamoto
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8552, Japan
| | - Junya Sawada
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8552, Japan
| | - Tetsuro Murahashi
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8552, Japan
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25
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Cook AW, Hrobárik P, Damon PL, Wu G, Hayton TW. A Ketimide-Stabilized Palladium Nanocluster with a Hexagonal Aromatic Pd7 Core. Inorg Chem 2020; 59:1471-1480. [DOI: 10.1021/acs.inorgchem.9b03276] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Andrew W. Cook
- Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, California 93106, United States
| | - Peter Hrobárik
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Comenius University, SK-84215 Bratislava, Slovakia
| | - Peter L. Damon
- Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, California 93106, United States
| | - Guang Wu
- Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, California 93106, United States
| | - Trevor W. Hayton
- Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, California 93106, United States
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26
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Xu W, Li M, Qiao L, Xie J. Recent advances of dinuclear nickel- and palladium-complexes in homogeneous catalysis. Chem Commun (Camb) 2020; 56:8524-8536. [PMID: 32613965 DOI: 10.1039/d0cc02542a] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
In this highlight, we provide a current perspective of synthetic methodology development catalyzed by dinuclear Ni- and Pd-complexes in the past decade. The new catalytic reactivities of dinuclear Ni- and Pd-complexes are discussed.
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Affiliation(s)
- Wentao Xu
- State Key Laboratory of Coordination Chemistry
- Jiangsu Key Laboratory of Advanced Organic Materials
- Chemistry and Biomedicine Innovation Center (ChemBIC)
- School of Chemistry and Chemical Engineering
- Nanjing University
| | - Muzi Li
- State Key Laboratory of Coordination Chemistry
- Jiangsu Key Laboratory of Advanced Organic Materials
- Chemistry and Biomedicine Innovation Center (ChemBIC)
- School of Chemistry and Chemical Engineering
- Nanjing University
| | - Liancheng Qiao
- State Key Laboratory of Coordination Chemistry
- Jiangsu Key Laboratory of Advanced Organic Materials
- Chemistry and Biomedicine Innovation Center (ChemBIC)
- School of Chemistry and Chemical Engineering
- Nanjing University
| | - Jin Xie
- State Key Laboratory of Coordination Chemistry
- Jiangsu Key Laboratory of Advanced Organic Materials
- Chemistry and Biomedicine Innovation Center (ChemBIC)
- School of Chemistry and Chemical Engineering
- Nanjing University
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27
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Bonding and electronic structures in dinuclear (X)[(Ind)M2L2] complexes (M = Ni, Pd, L = CO, PEt3, X = Cl, Allyl, Ind = indenyl, Cp = cyclopentadienyl): analogy between four-electron donor ligands. Theor Chem Acc 2019. [DOI: 10.1007/s00214-019-2526-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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28
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Benmachiche A, Zouchoune B. Coordination and ligands’ effects in trinuclear [Pd3(COT)2(L)]2+ (L = H2O, CO, N2, HCN, HNC, NH3, PH3, PCl3, PF3, CS, CH2) sandwich complexes of cyclooctatetraene: theoretical investigation. Struct Chem 2019. [DOI: 10.1007/s11224-019-01351-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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29
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Ishikawa T, Kawamura A, Sugawa T, Moridaira R, Yamamoto K, Murahashi T. Exceeding Metal Capacity in Sandwich Complexes: Ligand-Unsupported Docking of Extra Metal Moieties at Edges of a Metal Sheet Sandwich Complex. Angew Chem Int Ed Engl 2019; 58:15318-15323. [PMID: 31415115 DOI: 10.1002/anie.201908850] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 08/12/2019] [Indexed: 11/08/2022]
Abstract
The ligand-unsupported accommodation of extra metal moieties in a sandwich complex is reported. Although it has been considered that the metal-capacity of a metal sheet sandwich complex is strictly limited by the size of cyclic unsaturated hydrocarbon ligands, the M-M edge bonds in a metal sheet sandwich complex provide a ligand-unsupported docking site for extra metal moieties, allowing expansion of metal-capacity in sandwich complexes. The metal sheet sandwich complex [Pd4 (μ4 -C8 H8 )(μ4 -C9 H9 )]+ , in which the ligand-based metal capacity is full in terms of the usage of all C=C moieties of the smaller carbocyclic ligand C8 H8 in coordination, can accommodate extra M0 {P(OPh)3 }2 (M=Pd, Pt) moieties without coordinative assistance by either the C9 H9 or the C8 H8 ligand.
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Affiliation(s)
- Tomoko Ishikawa
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8552, Japan
| | - Akino Kawamura
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8552, Japan
| | - Tsuyoshi Sugawa
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8552, Japan
| | - Risako Moridaira
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8552, Japan
| | - Koji Yamamoto
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8552, Japan
| | - Tetsuro Murahashi
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8552, Japan
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30
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Kolter M, Koszinowski K. Formation of Transient Anionic Metal Clusters in Palladium/Diene-Catalyzed Cross-Coupling Reactions. Chemistry 2019; 25:13376-13384. [PMID: 31335999 PMCID: PMC7687115 DOI: 10.1002/chem.201902610] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 07/11/2019] [Indexed: 12/30/2022]
Abstract
Despite their considerable practical value, palladium/1,3-diene-catalyzed cross-coupling reactions between Grignard reagents RMgCl and alkyl halides AlkylX remain mechanistically poorly understood. Herein, we probe the intermediates formed in these reactions by a combination of electrospray-ionization mass spectrometry, UV/Vis spectroscopy, and NMR spectroscopy. According to our results and in line with previous hypotheses, the first step of the catalytic cycle brings about transmetalation to afford organopalladate anions. These organopalladate anions apparently undergo SN 2-type reactions with the AlkylX coupling partner. The resulting neutral complexes then release the cross-coupling products by reductive elimination. In gas-phase fragmentation experiments, the occurrence of reductive eliminations was observed for anionic analogues of the neutral complexes. Although the actual catalytic cycle is supposed to involve chiefly mononuclear palladium species, anionic palladium nanoclusters [Pdn R(DE)n ]- , (n=2, 4, 6; DE=diene) were also observed. At short reaction times, the dinuclear complexes usually predominated, whereas at longer times the tetra- and hexanuclear clusters became relatively more abundant. In parallel, the formation of palladium black pointed to continued aggregation processes. Thus, the present study directly shows dynamic behavior of the palladium/diene catalyst system and degradation of the active catalyst with increasing reaction time.
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Affiliation(s)
- Marlene Kolter
- Institut für Organische und Biomolekulare ChemieUniversität GöttingenTammannstrasse 237077GöttingenGermany
| | - Konrad Koszinowski
- Institut für Organische und Biomolekulare ChemieUniversität GöttingenTammannstrasse 237077GöttingenGermany
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31
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DFT investigation of homotrinuclear and heterotrinuclear [M3(Phz)2], [MM′2(Phz)2], [M3(CO)2(Phz)2], [MM′2(CO)2(Phz)2] sandwich complexes (M = Ti, Cr, Fe and Ni; M′ = V and Mn, Phz = C12H8N2): predicted models and electronic structures. Struct Chem 2019. [DOI: 10.1007/s11224-019-01322-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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32
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Pretorius R, McDonald A, Regueira Beltrão da Costa L, Müller‐Bunz H, Albrecht M. Palladium(II), Rhodium(I), and Iridium(I) Complexes Containing
O
‐Functionalized 1,2,3‐Triazol‐5‐ylidene Ligands. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900724] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- René Pretorius
- Department of Chemistry and Biochemistry University of Bern Freiestrasse 3 3012 Bern Switzerland
- School of Chemistry and Chemical Biology University College Dublin 4 Dublin Ireland
| | - Ava McDonald
- School of Chemistry and Chemical Biology University College Dublin 4 Dublin Ireland
| | | | - Helge Müller‐Bunz
- School of Chemistry and Chemical Biology University College Dublin 4 Dublin Ireland
| | - Martin Albrecht
- Department of Chemistry and Biochemistry University of Bern Freiestrasse 3 3012 Bern Switzerland
- School of Chemistry and Chemical Biology University College Dublin 4 Dublin Ireland
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33
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Ishikawa T, Kawamura A, Sugawa T, Moridaira R, Yamamoto K, Murahashi T. Exceeding Metal Capacity in Sandwich Complexes: Ligand‐Unsupported Docking of Extra Metal Moieties at Edges of a Metal Sheet Sandwich Complex. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201908850] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Tomoko Ishikawa
- Department of Chemical Science and Engineering School of Materials and Chemical Technology Tokyo Institute of Technology, O-okayama, Meguro-ku Tokyo 152-8552 Japan
| | - Akino Kawamura
- Department of Chemical Science and Engineering School of Materials and Chemical Technology Tokyo Institute of Technology, O-okayama, Meguro-ku Tokyo 152-8552 Japan
| | - Tsuyoshi Sugawa
- Department of Chemical Science and Engineering School of Materials and Chemical Technology Tokyo Institute of Technology, O-okayama, Meguro-ku Tokyo 152-8552 Japan
| | - Risako Moridaira
- Department of Chemical Science and Engineering School of Materials and Chemical Technology Tokyo Institute of Technology, O-okayama, Meguro-ku Tokyo 152-8552 Japan
| | - Koji Yamamoto
- Department of Chemical Science and Engineering School of Materials and Chemical Technology Tokyo Institute of Technology, O-okayama, Meguro-ku Tokyo 152-8552 Japan
| | - Tetsuro Murahashi
- Department of Chemical Science and Engineering School of Materials and Chemical Technology Tokyo Institute of Technology, O-okayama, Meguro-ku Tokyo 152-8552 Japan
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34
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Barik SK, Chiu TH, Liu YC, Chiang MH, Gam F, Chantrenne I, Kahlal S, Saillard JY, Liu CW. Mono- and hexa-palladium doped silver nanoclusters stabilized by dithiolates. NANOSCALE 2019; 11:14581-14586. [PMID: 31359023 DOI: 10.1039/c9nr05068j] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The synthesis, via a co-reduction method, of the first Pd-containing silver-rich 21-metal-atom nanocluster passivated by dithiolates, [PdAg20{S2P(OnPr)2}12] (1), is reported. 1 is an 8 electron superatom isoelectronic to [Ag21{S2P(OiPr)2}12]+. The doping of Pd in 1 leads to its high stability against degradation in solution and shows red emission in MeTHF at 77 K. In addition, we report the X-ray crystal structure of a multi-palladium doped silver nanocluster, [Pd6Ag14(S){S2P(OnPr)2}12] (2), for the first time. Its X-ray structure exhibits a sulfide-centered Pd6Ag2 rhombohedron surrounded by twelve additional silver atoms with S6 symmetry. The XPS study and DFT calculations indicate that 2 contains Pd(0) and Ag(i) metals. A significant decrease in the electrochemical gap was observed in the SWVs of 2.
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Affiliation(s)
- Subrat Kumar Barik
- Department of Chemistry, National Dong Hwa University, No. 1 Sec. 2, Da Hsueh Rd., Shoufeng, Hualien 97401, Taiwan, Republic of China.
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35
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Jackman KMK, Bridge BJ, Sauvé ER, Rowley CN, Zheng CHM, Stubbs JM, Boyle PD, Blacquiere JM. C(sp 3)–C(sp 3) Coupling with a Pd(II) Complex Bearing a Structurally Responsive Ligand. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Kyle M. K. Jackman
- Department of Chemistry, University of Western Ontario, London, Canada N6A 5B7
| | - Benjamin J. Bridge
- Department of Chemistry, University of Western Ontario, London, Canada N6A 5B7
| | - Ethan R. Sauvé
- Department of Chemistry, University of Western Ontario, London, Canada N6A 5B7
| | - Christopher N. Rowley
- Department of Chemistry, Memorial University of Newfoundland, St. John’s, Canada A1B 3X7
| | - Cameron H. M. Zheng
- Department of Chemistry, University of Western Ontario, London, Canada N6A 5B7
| | - James M. Stubbs
- Department of Chemistry, University of Western Ontario, London, Canada N6A 5B7
| | - Paul D. Boyle
- Department of Chemistry, University of Western Ontario, London, Canada N6A 5B7
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36
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Hexacoppergermsesquioxanes as complexes with N-ligands: Synthesis, structure and catalytic properties. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.01.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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37
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Shimamoto K, Sunada Y. Dimensionality Expansion of a Butterfly Shaped Pd 4 Framework: Constructing Edge-Sharing Pd 6 Tetrahedra. Chemistry 2019; 25:3761-3765. [PMID: 30762905 DOI: 10.1002/chem.201805678] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 01/22/2019] [Indexed: 11/09/2022]
Abstract
The construction of well-defined transition-metal clusters has attracted substantial attention due to their unique chemical and/or physical properties. Metal clusters with 1D or 2D structures are now accessible by template-synthesis methods, in which multiple metal atoms are arranged with the aid of template molecules and their 1D or 2D structures. However, the rational synthesis of 3D clusters remains challenging, mostly due to a lack of appropriate template molecules. Herein, we report the rational synthesis of a 2D butterfly shaped Pd4 framework (2) and 3D edge-sharing Pd6 tetrahedra (5) by treatment of easily available organosilicon compounds with Pd(CNtBu)2 . The diphenylsilylene moiety thereby serves as the key component to generate the butterfly structure of the Pd4 clusters in 2. A dimensionality expansion, induced by two Cl atoms, of two butterfly shaped Pd4 subunits supported by two diphenylsilylene moieties afforded the edge-sharing tetrahedral architecture of the Pd6 cluster in 5.
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Affiliation(s)
- Kento Shimamoto
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Yusuke Sunada
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Meguro-ku, Komaba, Tokyo, Japan.,Department of Applied Chemistry, School of Engineering, The University of Tokyo, Tokyo, Japan
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38
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Yamashita M, Horiuchi S, Yamamoto K, Murahashi T. Photo-induced translocation of a Pdn moiety (n = 2, 7) on a conjugated polyene ligand. Dalton Trans 2019; 48:13149-13153. [DOI: 10.1039/c9dt03073e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Pd2-translocation on a tetraene ligand is switchable between the thermodynamic equilibrium state and the photo-stationary state. The Pd7-translocation on a carotene ligand proceeds smoothly under photo-irradiation.
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Affiliation(s)
- Mitsuki Yamashita
- Department of Chemical Science and Engineering
- Tokyo Institute of Technology
- Tokyo
- Japan
| | - Shinnosuke Horiuchi
- Research Center of Integrative Molecular Systems
- Institute for Molecular Science
- Aichi 444-8787
- Japan
| | - Koji Yamamoto
- Department of Chemical Science and Engineering
- Tokyo Institute of Technology
- Tokyo
- Japan
| | - Tetsuro Murahashi
- Department of Chemical Science and Engineering
- Tokyo Institute of Technology
- Tokyo
- Japan
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39
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Yamashita M, Kawasumi Y, Tachibana Y, Horiuchi S, Yamamoto K, Murahashi T. Extended Open‐Chain Polyenides as Versatile Delocalized Anion Ligands for Metal Chain Clusters. Chemistry 2018; 25:1212-1216. [DOI: 10.1002/chem.201805800] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Mitsuki Yamashita
- Department of Chemical Science and EngineeringTokyo Institute of Technology O-okayama Meguro-ku Tokyo 152-8552 Japan
| | - Yuna Kawasumi
- Department of Chemical Science and EngineeringTokyo Institute of Technology O-okayama Meguro-ku Tokyo 152-8552 Japan
| | - Yuki Tachibana
- Research Center of Integrative Molecular Systems (CIMoS)Institute for Molecular ScienceNational Institutes of Natural Sciences Myodaiji Okazaki Aichi 444-8787 Japan
- Department of Applied ChemistryGraduate School of EngineeringOsaka University Suita Osaka 565-0871 Japan
| | - Shinnosuke Horiuchi
- Research Center of Integrative Molecular Systems (CIMoS)Institute for Molecular ScienceNational Institutes of Natural Sciences Myodaiji Okazaki Aichi 444-8787 Japan
| | - Koji Yamamoto
- Department of Chemical Science and EngineeringTokyo Institute of Technology O-okayama Meguro-ku Tokyo 152-8552 Japan
| | - Tetsuro Murahashi
- Department of Chemical Science and EngineeringTokyo Institute of Technology O-okayama Meguro-ku Tokyo 152-8552 Japan
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40
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Efimenko IA, Erofeeva OS, Ugolkova EA, Efimov NN, Demina LI, Grishanova PV, Minin VV. Paramagnetic Pd+ centers in the polymeric matrices of palladium(I) sorbates and 4-pentenate. MENDELEEV COMMUNICATIONS 2018. [DOI: 10.1016/j.mencom.2018.11.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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41
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Monocoordinated Diphosphines Dangling in Pt(II) Complexes: Effective Synthons for Polynuclear Platinum Compounds. ChemistrySelect 2018. [DOI: 10.1002/slct.201802306] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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42
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Teramoto M, Iwata K, Yamaura H, Kurashima K, Miyazawa K, Kurashige Y, Yamamoto K, Murahashi T. Three-Dimensional Sandwich Nanocubes Composed of 13-Atom Palladium Core and Hexakis-Carbocycle Shell. J Am Chem Soc 2018; 140:12682-12686. [PMID: 30221517 DOI: 10.1021/jacs.8b07430] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Coordination of cyclic unsaturated hydrocarbons to transition metal generally gives bis-ligated sandwich complexes, which are a fundamental class of organometallic compounds. This sandwich structure may be extended to a higher-order three-dimensional one when more than two carbocyclic ligands surround an agglomerate of many transition metal atoms. Here, we report synthesis of three-dimensional sandwich nanocube compounds containing a close-packed transition metal cluster core. Reduction of a [Pd3(μ3-C7H7)2]2+ with tetraarylborate under neat conditions afforded [Pd13(μ4-C7H7)6]2+ containing a cuboctahedral Pd13 core with an octahedral ligand-shell.
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Affiliation(s)
- Masahiro Teramoto
- Department of Structural Molecular Science , The Graduate University for Advanced Studies , Myodaiji , Okazaki , Aichi 444-8787 , Japan.,Research Center of Integrative Molecular Systems (CIMoS) , Institute for Molecular Science , Myodaiji , Okazaki , Aichi 444-8787 , Japan
| | - Kosuke Iwata
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology , Tokyo Institute of Technology , O-okayama , Meguro-ku , Tokyo 152-8552 , Japan
| | - Hiroshige Yamaura
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology , Tokyo Institute of Technology , O-okayama , Meguro-ku , Tokyo 152-8552 , Japan
| | - Kenta Kurashima
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology , Tokyo Institute of Technology , O-okayama , Meguro-ku , Tokyo 152-8552 , Japan
| | - Koshi Miyazawa
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology , Tokyo Institute of Technology , O-okayama , Meguro-ku , Tokyo 152-8552 , Japan
| | - Yuki Kurashige
- Department of Chemistry, Graduate School of Science , Kyoto University , Sakyo-ku , Kyoto 606-8502 , Japan
| | - Koji Yamamoto
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology , Tokyo Institute of Technology , O-okayama , Meguro-ku , Tokyo 152-8552 , Japan
| | - Tetsuro Murahashi
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology , Tokyo Institute of Technology , O-okayama , Meguro-ku , Tokyo 152-8552 , Japan
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43
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Scattolin T, Senol E, Yin G, Guo Q, Schoenebeck F. Site-Selective C-S Bond Formation at C-Br over C-OTf and C-Cl Enabled by an Air-Stable, Easily Recoverable, and Recyclable Palladium(I) Catalyst. Angew Chem Int Ed Engl 2018; 57:12425-12429. [PMID: 30014554 PMCID: PMC6468269 DOI: 10.1002/anie.201806036] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 07/01/2018] [Indexed: 11/17/2022]
Abstract
This report widens the repertoire of emerging PdI catalysis to carbon-heteroatom, that is, C-S bond formation. While Pd0 -catalyzed protocols may suffer from the formation of poisonous sulfide-bound off-cycle intermediates and lack of selectivity, the mechanistically diverse PdI catalysis concept circumvents these challenges and allows for C-S bond formation (S-aryl and S-alkyl) of a wide range of aryl halides. Site-selective thiolations of C-Br sites in the presence of C-Cl and C-OTf were achieved in a general and a priori predictable fashion. Computational, spectroscopic, X-ray, and reactivity data support dinuclear PdI catalysis to be operative. Contrary to air-sensitive Pd0 , the active PdI species was easily recovered in the open atmosphere and subjected to multiple rounds of recycling.
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Affiliation(s)
- Thomas Scattolin
- Institute of Organic ChemistryRWTH Aachen UniversityAachenGermany
| | - Erdem Senol
- Institute of Organic ChemistryRWTH Aachen UniversityAachenGermany
| | - Guoyin Yin
- Institute of Organic ChemistryRWTH Aachen UniversityAachenGermany
| | - Qianqian Guo
- Institute of Inorganic ChemistryX-ray CrystallographyLandoltweg 152074AachenGermany
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44
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Scattolin T, Senol E, Yin G, Guo Q, Schoenebeck F. Site-Selective C−S Bond Formation at C−Br over C−OTf and C−Cl Enabled by an Air-Stable, Easily Recoverable, and Recyclable Palladium(I) Catalyst. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806036] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Thomas Scattolin
- Institute of Organic Chemistry; RWTH Aachen University; Aachen Germany
| | - Erdem Senol
- Institute of Organic Chemistry; RWTH Aachen University; Aachen Germany
| | - Guoyin Yin
- Institute of Organic Chemistry; RWTH Aachen University; Aachen Germany
| | - Qianqian Guo
- Institute of Inorganic Chemistry; X-ray Crystallography; Landoltweg 1 52074 Aachen Germany
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45
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Stability and possible multiple metal-metal bonding in tetranuclear sandwich complexes of cyclooctatetraene ligand. Struct Chem 2018. [DOI: 10.1007/s11224-018-1077-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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46
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Liu QX, Hu ZL, Yu SC, Zhao ZX, Wei DC, Li HL. NHC Pd(II) and Ag(I) Complexes: Synthesis, Structure, and Catalytic Activity in Three Types of C-C Coupling Reactions. ACS OMEGA 2018; 3:4035-4047. [PMID: 31458640 PMCID: PMC6641614 DOI: 10.1021/acsomega.8b00205] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2018] [Accepted: 03/21/2018] [Indexed: 06/10/2023]
Abstract
Four bis-benzimidazolium salts, 1,4-bis[1'-(N-R-benzimidazoliumyl)methyl]-2,3,5,6-tetramethylbenzene 2X- (L 1 H 2 ·(PF 6 ) 2 : R = ethyl, X = PF6; L 2 H 2 ·Br 2 : R = picolyl, X = Br; L 3 H 2 ·Br 2 : R = benzyl, X = Br; and L 4 H 2 ·Br 2 : R = allyl, X = Br), and their three N-heterocyclic carbene (NHC) Pd(II) and Ag(I) complexes, L 1 Pd 2 Cl 4 (1), L 2 Ag 2 Br 2 (2), and L 4 (AgBr) 2 (3), as well as one anionic complex L 3 H 2 ·(Ag 4 Br 8 ) 0.5 (4), have been synthesized and characterized. Complex 1 adopts a funnel-like type of structure, complex 2 adopts a cyclic structure, and complex 3 is an open structure. In the crystal packing of 1-4, one-dimensional polymeric chains and two-dimensional supramolecular layers are formed via intermolecular weak interactions, including hydrogen bonds, π-π interactions, and C-H···π contacts. The catalytic activities of NHC Pd(II) complex 1 in three types of C-C coupling reactions (Suzuki-Miyaura, Heck-Mizoroki, and Sonogashira reactions) were studied. The results show that this catalytic system is efficient for these C-C coupling reactions.
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Affiliation(s)
- Qing-Xiang Liu
- Key
Laboratory of Inorganic−Organic Hybrid Functional Materials
Chemistry (Tianjin Normal University), Ministry of Education, College
of Chemistry and Tianjin Key Laboratory of Structure and Performance for Functional
Molecules, College of Chemistry, Tianjin
Normal University, Tianjin 300387, China
| | - Ze-Liang Hu
- Key
Laboratory of Inorganic−Organic Hybrid Functional Materials
Chemistry (Tianjin Normal University), Ministry of Education, College
of Chemistry and Tianjin Key Laboratory of Structure and Performance for Functional
Molecules, College of Chemistry, Tianjin
Normal University, Tianjin 300387, China
| | - Shao-Cong Yu
- Key
Laboratory of Inorganic−Organic Hybrid Functional Materials
Chemistry (Tianjin Normal University), Ministry of Education, College
of Chemistry and Tianjin Key Laboratory of Structure and Performance for Functional
Molecules, College of Chemistry, Tianjin
Normal University, Tianjin 300387, China
| | - Zhi-Xiang Zhao
- Key
Laboratory of Inorganic−Organic Hybrid Functional Materials
Chemistry (Tianjin Normal University), Ministry of Education, College
of Chemistry and Tianjin Key Laboratory of Structure and Performance for Functional
Molecules, College of Chemistry, Tianjin
Normal University, Tianjin 300387, China
| | - Deng-Che Wei
- Key
Laboratory of Inorganic−Organic Hybrid Functional Materials
Chemistry (Tianjin Normal University), Ministry of Education, College
of Chemistry and Tianjin Key Laboratory of Structure and Performance for Functional
Molecules, College of Chemistry, Tianjin
Normal University, Tianjin 300387, China
| | - Hui-Long Li
- Key
Laboratory of Inorganic−Organic Hybrid Functional Materials
Chemistry (Tianjin Normal University), Ministry of Education, College
of Chemistry and Tianjin Key Laboratory of Structure and Performance for Functional
Molecules, College of Chemistry, Tianjin
Normal University, Tianjin 300387, China
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47
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Balcells D, Nova A. Designing Pd and Ni Catalysts for Cross-Coupling Reactions by Minimizing Off-Cycle Species. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00230] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- David Balcells
- Hylleraas Centre for Quantum Molecular Sciences, Department of Chemistry, University of Oslo, P.O. Box 1033, Blindern, Oslo 0315, Norway
| | - Ainara Nova
- Hylleraas Centre for Quantum Molecular Sciences, Department of Chemistry, University of Oslo, P.O. Box 1033, Blindern, Oslo 0315, Norway
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48
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Dinuclear Nickel(I) and Palladium(I) Complexes for Highly Active Transformations of Organic Compounds. Molecules 2018; 23:molecules23010140. [PMID: 29324677 PMCID: PMC6017577 DOI: 10.3390/molecules23010140] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 01/08/2018] [Accepted: 01/09/2018] [Indexed: 11/23/2022] Open
Abstract
In typical catalytic organic transformations, transition metals in catalytically active complexes are present in their most stable valence states, such as palladium(0) and (II). However, some dimeric monovalent metal complexes can be stabilized by auxiliary ligands to form diamagnetic compounds with metal–metal bonding interactions. These diamagnetic compounds can act as catalysts while retaining their dimeric forms, split homolytically or heterolytically into monomeric forms, which usually have high activity, or in contrast, become completely deactivated as catalysts. Recently, many studies using group 10 metal complexes containing nickel and palladium have demonstrated that under specific conditions, the active forms of these catalyst precursors are not mononuclear zerovalent complexes, but instead dinuclear monovalent metal complexes. In this mini-review, we have surveyed the preparation, reactivity, and the catalytic processes of dinuclear nickel(I) and palladium(I) complexes, focusing on mechanistic insights into the precatalyst activation systems and the structure and behavior of nickel and palladium intermediates.
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49
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Sugawa T, Yamamoto K, Murahashi T. Bimodal coordination of fused arenes to a Pd3 cluster site. Chem Commun (Camb) 2018; 54:5875-5878. [DOI: 10.1039/c8cc02880j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
We report bimodal coordination of fused arenes to a Pd3 cluster site. The oxidative π-addition mode of anthracene and tetracene as well as the π-coordination mode of triphenylene and fluoranthene were identified.
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Affiliation(s)
- Tsuyoshi Sugawa
- Department of Chemical Science and Engineering
- School of Materials and Chemical Technology
- Tokyo Institute of Technology O-okayama
- Meguro-ku
- Tokyo 152-8552
| | - Koji Yamamoto
- Department of Chemical Science and Engineering
- School of Materials and Chemical Technology
- Tokyo Institute of Technology O-okayama
- Meguro-ku
- Tokyo 152-8552
| | - Tetsuro Murahashi
- Department of Chemical Science and Engineering
- School of Materials and Chemical Technology
- Tokyo Institute of Technology O-okayama
- Meguro-ku
- Tokyo 152-8552
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50
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Construction of a Planar Tetrapalladium Cluster by the Reaction of Palladium(0) Bis(isocyanide) with Cyclic Tetrasilane. INORGANICS 2017. [DOI: 10.3390/inorganics5040084] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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