1
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Slinger BL, Zhu J, Widenhoefer RA. Cationic Bis(Gold) Indenyl Complexes. Chempluschem 2024; 89:e202300691. [PMID: 38259056 DOI: 10.1002/cplu.202300691] [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: 11/25/2023] [Revised: 01/23/2024] [Accepted: 01/23/2024] [Indexed: 01/24/2024]
Abstract
Reaction of (P)AuOTf [P=P(t-Bu)2o-biphenyl] with indenyl- or 3-methylindenyl lithium led to isolation of gold η1-indenyl complexes (P)Au(η1-inden-1-yl) (1 a) and (P)Au(η1-3-methylinden-1-yl) (1 b), respectively, in >65 % yield. Whereas complex 1 b is static, complex 1 a undergoes facile, degenerate 1,3-migration of gold about the indenyl ligand (ΔG≠ 153K=9.1±1.1 kcal/mol). Treatment of complexes 1 a and 1 b with (P)AuNTf2 led to formation of the corresponding cationic bis(gold) indenyl complexes trans-[(P)Au]2(η1,η1-inden-1,3-yl) (2 a) and trans-[(P)Au]2(η1,η2-3-methylinden-1-yl) (2 b), respectively, which were characterized spectroscopically and modeled computationally. Despite the absence of aurophilic stabilization in complexes 2 a and 2 b, the binding affinity of mono(gold) complex 1 a toward exogenous (P)Au+ exceed that of free indene by ~350-fold and similarly the binding affinity of 1 b toward exogenous (P)Au+ exceed that of 3-methylindene by ~50-fold. The energy barrier for protodeauration of bis(gold) indenyl complex 2 a with HOAc was ≥8 kcal/mol higher than for protodeauration of mono(gold) complex 1 a.
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Affiliation(s)
- Brady L Slinger
- Department of Chemistry, Duke University French Family Science Center, Durham, NC, 27708-0346, USA
| | - Jiaqi Zhu
- Department of Chemistry, Duke University French Family Science Center, Durham, NC, 27708-0346, USA
| | - Ross A Widenhoefer
- Department of Chemistry, Duke University French Family Science Center, Durham, NC, 27708-0346, USA
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2
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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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3
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Koizumi T, Tsuchido Y, Ide T, Osakada K. Structure and Properties of Lantern‐Shaped Hexapalladium Complexes with Germylene and Thiolate Ligands [Pd
6
(µ‐GePh
2
)
2
(µ‐SC
6
H
4
‐
p
‐X)
2
(CN‐C
6
H
3
Me
2
‐2,6)
8
] (X = NO
2
, Cl, H, CH
3
). Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000233] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Take‐aki Koizumi
- Laboratory for Chemistry and Life Science Institute of Innovative Research Tokyo Institute of Technology 4259‐R1‐3 Nagatsuta, Midori‐ku 226‐8503 Yokohama Japan
| | - Yoshitaka Tsuchido
- Laboratory for Chemistry and Life Science Institute of Innovative Research Tokyo Institute of Technology 4259‐R1‐3 Nagatsuta, Midori‐ku 226‐8503 Yokohama Japan
| | - Tomohito Ide
- Department of Chemical Science and Engineering National Institute of Technology Tokyo College 1220‐2 Kunugida‐machi, Hachioji‐shi 193‐0997 Tokyo Japan
| | - Kohtaro Osakada
- Laboratory for Chemistry and Life Science Institute of Innovative Research Tokyo Institute of Technology 4259‐R1‐3 Nagatsuta, Midori‐ku 226‐8503 Yokohama Japan
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4
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Hazari N, Hruszkewycz DP. Dinuclear Pd(I) complexes with bridging allyl and related ligands. Chem Soc Rev 2016; 45:2871-99. [PMID: 27051890 DOI: 10.1039/c5cs00537j] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
There are many important synthetic methods that utilize palladium catalysts. In most of these reactions, the palladium species are proposed to exist exclusively in either the Pd(0) or Pd(II) oxidation states. However, in the last decade, dinuclear Pd(I) complexes have repeatedly been isolated from reaction mixtures previously suggested to involve only species in the Pd(0) and Pd(II) oxidation states. As a consequence, in order to design improved catalysts there is considerable interest in understanding the chemistry of dinuclear Pd(I) complexes. A significant proportion of the known dinuclear Pd(I) complexes are supported by bridging allyl or related ligands such as cyclopentadienyl or indenyl ligands. This review provides a detailed account of the synthesis, electronic structure and stoichiometric reactivity of dinuclear Pd(I) complexes with bridging allyl and related ligands. Additionally, it describes recent work where dinuclear Pd(I) complexes with bridging allyl ligands have been detected in catalytic reactions, such as cross-coupling, and discusses the potential implications for catalysis.
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Affiliation(s)
- Nilay Hazari
- The Department of Chemistry, Yale University, P. O. Box 208107, New Haven, Connecticut 06520, USA.
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5
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Hruszkewycz DP, Guard LM, Balcells D, Feldman N, Hazari N, Tilset M. Effect of 2-Substituents on Allyl-Supported Precatalysts for the Suzuki–Miyaura Reaction: Relating Catalytic Efficiency to the Stability of Palladium(I) Bridging Allyl Dimers. Organometallics 2014. [DOI: 10.1021/om501250y] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Damian P. Hruszkewycz
- The Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States and
| | - Louise M. Guard
- The Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States and
| | - David Balcells
- Centre for Theoretical and Computational
Chemistry (CTCC), Department of Chemistry, University of Oslo, P.O. Box 1033 Blindern, 0315 Oslo, Norway
| | - Nicola Feldman
- The Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States and
| | - Nilay Hazari
- The Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States and
| | - Mats Tilset
- Centre for Theoretical and Computational
Chemistry (CTCC), Department of Chemistry, University of Oslo, P.O. Box 1033 Blindern, 0315 Oslo, Norway
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6
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An unusual product distribution from the reaction of Pd(η3-1-PhC3H4)(η5-C5H5) with a deficiency of PPh3 in the presence of bromobenzene. TRANSIT METAL CHEM 2014. [DOI: 10.1007/s11243-014-9897-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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7
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Borjian S, Baird MC. NMR Studies of the Species Present in Cross-Coupling Catalysis Systems Involving Pd(η3-1-Ph-C3H4)(η5-C5H5) and [Pd(η3-1-Ph-C3H4)Cl]2 Activated by PBut3, XPhos, and Mor-Dalphos: Nonexistence of Pd(XPhos)n and Pd(Mor-Dalphos)n (n = 1, 2) at Moderate Temperatures. Organometallics 2014. [DOI: 10.1021/om500618e] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Sogol Borjian
- Department
of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
| | - Michael C. Baird
- Department
of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
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8
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Hruszkewycz DP, Balcells D, Guard LM, Hazari N, Tilset M. Insight into the efficiency of cinnamyl-supported precatalysts for the Suzuki-Miyaura reaction: observation of Pd(I) dimers with bridging allyl ligands during catalysis. J Am Chem Soc 2014; 136:7300-16. [PMID: 24824779 DOI: 10.1021/ja412565c] [Citation(s) in RCA: 102] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Despite widespread use of complexes of the type Pd(L)(η(3)-allyl)Cl as precatalysts for cross-coupling, the chemistry of related Pd(I) dimers of the form (μ-allyl)(μ-Cl)Pd2(L)2 has been underexplored. Here, the relationship between the monomeric and the dimeric compounds is investigated using both experiment and theory. We report an efficient synthesis of the Pd(I) dimers (μ-allyl)(μ-Cl)Pd2(IPr)2 (allyl = allyl, crotyl, cinnamyl; IPr = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene) through activation of Pd(IPr)(η(3)-allyl)Cl type monomers under mildly basic reaction conditions. The catalytic performance of the Pd(II) monomers and their Pd(I) μ-allyl dimer congeners for the Suzuki-Miyaura reaction is compared. We propose that the (μ-allyl)(μ-Cl)Pd2(IPr)2-type dimers are activated for catalysis through disproportionation to Pd(IPr)(η(3)-allyl)Cl and monoligated IPr-Pd(0). The microscopic reverse comproportionation reaction of monomers of the type Pd(IPr)(η(3)-allyl)Cl with IPr-Pd(0) to form Pd(I) dimers is also studied. It is demonstrated that this is a facile process, and Pd(I) dimers are directly observed during catalysis in reactions using Pd(II) precatalysts. In these catalytic reactions, Pd(I) μ-allyl dimer formation is a deleterious process which removes the IPr-Pd(0) active species from the reaction mixture. However, increased sterics at the 1-position of the allyl ligand in the Pd(IPr)(η(3)-crotyl)Cl and Pd(IPr)(η(3)-cinnamyl)Cl precatalysts results in a larger kinetic barrier to comproportionation, which allows more of the active IPr-Pd(0) catalyst to enter the catalytic cycle when these substituted precatalysts are used. Furthermore, we have developed reaction conditions for the Suzuki-Miyaura reaction using Pd(IPr)(η(3)-cinnamyl)Cl which are compatible with mild bases.
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Affiliation(s)
- Damian P Hruszkewycz
- The Department of Chemistry, Yale University , P.O. Box 208107, New Haven, Connecticut 06520, United States
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9
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Wu J, Nova A, Balcells D, Brudvig GW, Dai W, Guard LM, Hazari N, Lin PH, Pokhrel R, Takase MK. Nickel(I) Monomers and Dimers with Cyclopentadienyl and Indenyl Ligands. Chemistry 2014; 20:5327-37. [DOI: 10.1002/chem.201305021] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Revised: 01/28/2014] [Indexed: 11/10/2022]
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10
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Dai W, Chalkley MJ, Brudvig GW, Hazari N, Melvin PR, Pokhrel R, Takase MK. Synthesis and Properties of NHC-Supported Palladium(I) Dimers with Bridging Allyl, Cyclopentadienyl, and Indenyl Ligands. Organometallics 2013. [DOI: 10.1021/om400687m] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wei Dai
- The
Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States
| | - Matthew J. Chalkley
- The
Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States
| | - Gary W. Brudvig
- The
Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States
| | - Nilay Hazari
- The
Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States
| | - Patrick R. Melvin
- The
Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States
| | - Ravi Pokhrel
- The
Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States
| | - Michael K. Takase
- The
Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States
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11
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Yamaguchi Y, Yamanishi K, Kondo M, Tsukada N. Synthesis of Dinuclear (μ-η3-Allyl)palladium(I) and -platinum(I) Complexes Supported by Chelate-Bridging Ligands. Organometallics 2013. [DOI: 10.1021/om400557p] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Yu Yamaguchi
- Department
of Chemistry, Graduate School of Science, ‡Graduate School of Science
and Technology, and §Research Institute of Green Science and Technology, Shizuoka University, Shizuoka 422-8529,
Japan
| | - Katsunori Yamanishi
- Department
of Chemistry, Graduate School of Science, ‡Graduate School of Science
and Technology, and §Research Institute of Green Science and Technology, Shizuoka University, Shizuoka 422-8529,
Japan
| | - Mitsuru Kondo
- Department
of Chemistry, Graduate School of Science, ‡Graduate School of Science
and Technology, and §Research Institute of Green Science and Technology, Shizuoka University, Shizuoka 422-8529,
Japan
| | - Naofumi Tsukada
- Department
of Chemistry, Graduate School of Science, ‡Graduate School of Science
and Technology, and §Research Institute of Green Science and Technology, Shizuoka University, Shizuoka 422-8529,
Japan
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12
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Chalkley MJ, Guard LM, Hazari N, Hofmann P, Hruszkewycz DP, Schmeier TJ, Takase MK. Synthesis, Electronic Structure, and Reactivity of Palladium(I) Dimers with Bridging Allyl, Cyclopentadienyl, and Indenyl Ligands. Organometallics 2013. [DOI: 10.1021/om400415c] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Matthew J. Chalkley
- The Department of Chemistry, Yale University, P.O. Box 208107, New
Haven, Connecticut 06520, United States
| | - Louise M. Guard
- The Department of Chemistry, Yale University, P.O. Box 208107, New
Haven, Connecticut 06520, United States
| | - Nilay Hazari
- The Department of Chemistry, Yale University, P.O. Box 208107, New
Haven, Connecticut 06520, United States
| | - Peter Hofmann
- Organisch-Chemisches
Institut, University of Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg,
Germany
| | - Damian P. Hruszkewycz
- The Department of Chemistry, Yale University, P.O. Box 208107, New
Haven, Connecticut 06520, United States
| | - Timothy J. Schmeier
- The Department of Chemistry, Yale University, P.O. Box 208107, New
Haven, Connecticut 06520, United States
| | - Michael K. Takase
- The Department of Chemistry, Yale University, P.O. Box 208107, New
Haven, Connecticut 06520, United States
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13
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Murahashi T, Takase K, Usui K, Kimura S, Fujimoto M, Uemura T, Ogoshi S, Yamamoto K. Trinuclear palladium addition to unsaturated carbocycles. Dalton Trans 2013; 42:10626-32. [DOI: 10.1039/c3dt51018b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Lichtenberg C, Engel J, Spaniol TP, Englert U, Raabe G, Okuda J. Bis(allyl)zinc revisited: sigma versus pi bonding of allyl coordination. J Am Chem Soc 2012; 134:9805-11. [PMID: 22591244 DOI: 10.1021/ja303480a] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The reinvestigation of two allyl zinc compounds, parent bis(allyl)zinc [Zn(C(3)H(5))(2)] (1) and 2-methallyl chloro zinc [Zn(C(4)H(7))Cl] (2), revealed two new coordination modes in the solid state for the allyl ligand, viz cis- and trans-μ(2)-η(1):η(1). These results call for modification of the conventional interpretation of zinc-allyl interactions. Computational results indicate that the classical η(3)-bonding mode of the allyl ligand is not favored in zinc compounds. A rare case of a zinc-olefin interaction in the dimer of [Zn(η(1)-C(3)H(5))(OC(C(3)H(5))Ph(2))] was found in the monoinsertion product of 1 with benzophenone.
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Affiliation(s)
- Crispin Lichtenberg
- Institute of Inorganic Chemistry, RWTH Aachen, Landoltweg 1, 52056 Aachen, Germany
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15
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Hruszkewycz DP, Wu J, Green JC, Hazari N, Schmeier TJ. Mechanistic Studies of the Insertion of CO2 into Palladium(I) Bridging Allyl Dimers. Organometallics 2011. [DOI: 10.1021/om201163k] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Damian P. Hruszkewycz
- The Department
of Chemistry, Yale University, P.O. Box
208107, New Haven, Connecticut 06520, United States
| | - Jianguo Wu
- The Department
of Chemistry, Yale University, P.O. Box
208107, New Haven, Connecticut 06520, United States
| | - Jennifer C. Green
- The Inorganic Chemistry Laboratory, South Parks Road, Oxford, OX1 3QR, United Kingdom
| | - Nilay Hazari
- The Department
of Chemistry, Yale University, P.O. Box
208107, New Haven, Connecticut 06520, United States
| | - Timothy J. Schmeier
- The Department
of Chemistry, Yale University, P.O. Box
208107, New Haven, Connecticut 06520, United States
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16
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Computational Insights into Palladium-Mediated Allylic Substitution Reactions. TOP ORGANOMETAL CHEM 2011. [DOI: 10.1007/3418_2011_8] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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17
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Yoshida Y, Kondo M, Saito G. Ionic Liquids Formed with Polycyano 1,1,3,3-Tetracyanoallyl Anions: Substituent Effects of Anions on Liquid Properties. J Phys Chem B 2009; 113:8960-6. [DOI: 10.1021/jp903242w] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Yukihiro Yoshida
- Research Institute, Meijo University, Shiogamaguchi 1-501 Tempaku, Nagoya 468-8502, Japan, and Division of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Masatoshi Kondo
- Research Institute, Meijo University, Shiogamaguchi 1-501 Tempaku, Nagoya 468-8502, Japan, and Division of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Gunzi Saito
- Research Institute, Meijo University, Shiogamaguchi 1-501 Tempaku, Nagoya 468-8502, Japan, and Division of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
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18
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Walter MD, Moorhouse RA, Urbin SA, White PS, Brookhart M. γ-Agostic Species as Key Intermediates in the Vinyl Addition Polymerization of Norbornene with Cationic (allyl)Pd Catalysts: Synthesis and Mechanistic Insights. J Am Chem Soc 2009; 131:9055-69. [DOI: 10.1021/ja9025598] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marc D. Walter
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290
| | - Rebecca A. Moorhouse
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290
| | - Stephanie A. Urbin
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290
| | - Peter S. White
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290
| | - Maurice Brookhart
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290
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19
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Luo GG, Huang RB, Lin LR, Zheng LS. Synthesis, structure and photoluminescence of a novel palladium(I) compound: [Pd3(μ3-Cl)2(dppp)3][Pd2(μ2-Cl)3(PPh3)2](PPh3)2. INORG CHEM COMMUN 2008. [DOI: 10.1016/j.inoche.2008.04.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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20
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Synthesis and characterization of pyrido[1,2-a]quinoline palladacycles. MONATSHEFTE FUR CHEMIE 2008. [DOI: 10.1007/s00706-008-0932-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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21
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Cabeza JA, del Río I, García-Granda S, Martínez-Méndez L, Pérez-Carreño E. Reactivity of Alkynes Containing α-Hydrogen Atoms with a Triruthenium Hydrido Carbonyl Cluster: Alkenyl versus Allyl Cluster Derivatives. Chemistry 2005; 11:6040-52. [PMID: 16052661 DOI: 10.1002/chem.200500529] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The reactions of the hydrido-triruthenium cluster complex [Ru3(mu-H)(mu3-kappa(2)-HNNMe2)(CO)9] (1; H2NNMe2 = 1,1-dimethylhydrazine) with alkynes that have alpha-hydrogen atoms give trinuclear derivatives containing edge-bridging allyl or face-capping alkenyl ligands. Under mild conditions (THF, 70 degrees C) the isolated products are as follows: [Ru3(mu3-kappa(2)-HNNMe2)(mu-kappa(3)-1-syn-Me-3-anti-EtC3H3)(mu-CO)2(CO)6] (2) and [Ru3(mu3-kappa(2)-HNNMe2)(mu-kappa(3)-1-syn-Me-3-syn-EtC3H3)(mu-CO)2(CO)6] (3) from 3-hexyne; [Ru3(mu3-kappa(2)-HNNMe2)(mu-kappa(3)-3-anti-PhC3H4)(mu-CO)2(CO)6] (4), [Ru3(mu3-kappa(2)-HNNMe2)(mu-kappa(2)-MeCCHPh)(mu-CO)2(CO)6] (5) and [Ru3(mu3-kappa(2)-HNNMe2)(mu3-kappa(2)-PhCCHMe)(mu-CO)2(CO)6] (6) from 1-phenyl-1-propyne; [Ru3(mu3-kappa(2)-HNNMe2)(mu-kappa(2)-3-anti-PrC3H4)(mu-CO)2(CO)6] (7), [Ru3(mu3-kappa(2)-HNNMe2)(mu3-kappa(2)-BuCCH2)(mu-CO)2(CO)6] (8), and [Ru3(mu3-kappa(2)-HNNMe2)(mu3-kappa(2)-HCCHBu)(mu-CO)2(CO)6] (9) from 1-hexyne; [Ru3(mu3-kappa(2)-HNNMe2)(mu3-kappa(2)-HOH2CCCH2)(mu-CO)2(CO)6] (10) from propargyl alcohol; and [Ru3(mu3-kappa(2)-HNNMe2)(mu3-kappa(2)-MeOCH2CCH2)(mu-CO)2(CO)6] (11) from 3-methoxy-1-propyne. The regioselectivity of these reactions depends upon the nature of the alkyne reagent, which affects considerably the kinetic barriers of important reaction steps and the stability of the final products. It has been established that the face-capped alkenyl derivatives are not precursors to the allyl products, which are formed via edge-bridged alkenyl intermediates. At higher temperature (toluene, 110 degrees C), the complexes that have allyl ligands with an anti substituent are isomerized into allyl derivatives with that substituent in the syn position, for example, 4 into [Ru3(mu3-kappa(2)-HNNMe2)(mu-kappa(3)-3-syn-PhC3H4)(mu-CO)2(CO)6] (14). The diene complex [Ru3(mu-H)(mu3-kappa(2)-HNNMe2)(mu-kappa(4)-trans-EtC4H5)(CO)7] (13) has been obtained from the thermolysis of compounds 2 and 7 at 110 degrees C (3 and [Ru3(mu3-kappa(2)-HNNMe2)(mu-kappa(2)-3-syn-PrC3H4)(mu-CO)2(CO)6] (12) are also formed in these reactions). A DFT theoretical study has allowed a comparison of the thermodynamic stabilities of isomeric compounds and has helped rationalize the experimental results. Mechanistic proposals for the synthesis of the allyl complexes and their isomerization processes are also provided.
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Affiliation(s)
- Javier A Cabeza
- Departamento de Química Orgánica e Inorgánica, Instituto de Química Organometálica Enrique Moles, Universidad de Oviedo, 33071 Oviedo, Spain.
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Kurosawa H. From mononuclear to multinuclear complexes of palladium containing unsaturated hydrocarbon ligands. J Organomet Chem 2004. [DOI: 10.1016/j.jorganchem.2004.08.005] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Murahashi T, Ogoshi S, Kurosawa H. New direction in organopalladium chemistry: structure and reactivity of unsaturated hydrocarbon ligands bound to multipalladium units. CHEM REC 2003; 3:101-11. [PMID: 12731080 DOI: 10.1002/tcr.10052] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Examination of the manner of interaction between Pd(0) and allylpalladium(II) complexes, both being involved as key intermediates in Pd-catalyzed allylic coupling, led us to discover a new role for such combinations in affecting the stereochemistry of the transformations. A similar investigation of the system involving Pd(0) and allenyl/propargyl complexes of Pd(II) led to the discovery of dinuclear Pd(I)bond;Pd(I) complexes containing bridging allenyl/propargyl ligands, which exhibited novel structural and reactivity aspects of great synthetic significance. A systematic comparison was made between the structure, stability, and reactivity of allyl and allenyl/propargyl ligands in dinuclear complexes and those in mononuclear counterparts. On the basis of MO calculations, coordination behavior specific to the ligands of the dinuclear complex is attributed to the occurrence of the back-donating interaction from filled Pdbond;Pd bonding orbitals to vacant ligand pi* orbitals. Similar bonding features are the origin of the ready synthesis of novel one-dimensional sandwich complexes composed of conjugated polyene ligands and linear polypalladium chains. A substitutionally labile dipalladium complex reacts with an equimolar amount of trienes or alkynes to give formal [4pi + 2sigma] or [2pi + 2sigma] adducts, respectively, which undergo further unique transformations with additional unsaturated substrates.
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Affiliation(s)
- Tetsuro Murahashi
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Japan
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Tanase T. Recent Development of Linearly Ordered Multinuclear Transition-Metal Complexes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2002. [DOI: 10.1246/bcsj.75.1407] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Ogoshi S, Nishida T, Shinagawa T, Kurosawa H. Key process in palladium-catalyzed asymmetric transformation of propargyl electrophiles. Racemization of optically active eta1-allenylpalladium(II). J Am Chem Soc 2001; 123:7164-5. [PMID: 11459499 DOI: 10.1021/ja010583s] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- S Ogoshi
- Department of Applied Chemistry, Faculty of Engineering Osaka University, Suita, Osaka 565-0871, Japan
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Ogoshi S, Nishida T, Tsutsumi K, Ooi M, Shinagawa T, Akasaka T, Yamane M, Kurosawa H. Carbon-carbon bond formation by electrophilic addition at the central carbon of the mu-eta(3)-allenyl/propargyl ligand on the Pd-Pd bond. J Am Chem Soc 2001; 123:3223-8. [PMID: 11457056 DOI: 10.1021/ja003754m] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The mu-eta(3)-allenyl/propargyldipalladium complexes were synthesized by the reaction of the corresponding eta(1)-allenyl- or eta(1)-propargylpalladium complexes with Pd(2)(dba)(3). The X-ray diffraction analysis indicates that the dinuclear complex has a unique structure, in which two palladium, three carbon, two phosphorus, and one halogen atoms are in the same plane. These dinuclear complexes react with electrophiles, such as HCl or AcCl, at the central carbon of the mu-eta(3)-allenyl/propargyl ligand to give the mu-eta(3)-vinylcarbenedipalladium complexes. Intramolecular reaction proceeded smoothly to give cyclization products quantitatively. Addition of a catalytic amount of a palladium(0) complex dramatically accelerated the carbon-carbon bond formation. The MO calculations on the mu-eta(3)-allenyl/propargyl complexes indicated that the reaction proceeds via orbital control.
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Affiliation(s)
- S Ogoshi
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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Ogoshi* S, Nishida T, Fukunishi Y, Tsutsumi K, Kurosawa* H. Intermolecular propargyl/allenyl group transfer from Pd(II) to Pt(0) and Pt(II) to Pd(0). Key reaction in metal-catalyzed isomerization between propargyl and allenyl metal complexes. J Organomet Chem 2001. [DOI: 10.1016/s0022-328x(00)00787-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Tejel C, Ciriano MA, López JA, Lahoz FJ, Oro LA. Oxidative-Addition of Organic Monochloro Derivatives to Dinuclear Iridium Complexes: The Detection of Tautomeric Equilibria and Their Implications on the Reactivity. Organometallics 2000. [DOI: 10.1021/om000314v] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Cristina Tejel
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, E-50009 Zaragoza, Spain
| | - Miguel A. Ciriano
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, E-50009 Zaragoza, Spain
| | - José A. López
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, E-50009 Zaragoza, Spain
| | - Fernando J. Lahoz
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, E-50009 Zaragoza, Spain
| | - Luis A. Oro
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, E-50009 Zaragoza, Spain
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Affiliation(s)
- A Dedieu
- Laboratoire de Chimie Quantique, UMR 7551 CNRS/ULP, Université Louis Pasteur, 4 rue Blaise Pascal, 67000 Strasbourg, France
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Mealli C, Ienco A, Galindo A, Carreño EP. Theoretical Overview of Pd(I) and Pt(I) Dimers with Bridging Phosphido Ligand(s). Inorg Chem 1999; 38:4620-4625. [PMID: 11671183 DOI: 10.1021/ic990275j] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A review of all of the known structural stereotypes of dimeric Pt(I) or Pd(I) systems with at least one bridging phosphido group is presented. The nature of the direct metal-metal interaction is affected by the number, nature, and disposition of the various coligands. It appears that in some cases a bent M-M bond is by itself a center of nucleophilicity. On the other hand, it is experimentally known that the bridging phosphido ligand is a competing nucleophile, giving rise to an agostic interaction in Pd(2), but not in Pt(2), derivatives. MO theory is used to outline the major electronic features and correlation between different prototypes. Besides a qualitative approach based on the EHMO method, DFT and MP2 methods were used to reproduce the experimental structures and to explore the possibility of unknown tautomers.
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Affiliation(s)
- Carlo Mealli
- Istituto per lo Studio della Stereochimica ed Energetica dei Composti di Coordinazione, CNR, Via J. Nardi 39, 50132 Firenze, Italy, and Departamento de Química Inorgánica, Universidad de Sevilla, Aptdo 553, 41071 Sevilla, Spain
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Adams RD, Kwon OS, Perrin JL. The effect of a vinyl substituent on the ring opening of a substituted tetrahydrothiophene at a triosmium center. J Organomet Chem 1999. [DOI: 10.1016/s0022-328x(99)00143-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Leoni P, Pasquali M, Fadini L, Albinati A, Hofmann P, Metz M. Synthesis and Structure of Pd4(μ-PtBu2)2(μ-CS2)(PPh3)2I2, a Neutral Palladium(I) Derivative with a Hexacoordinate Carbon and a CS2Molecule Bridging Four Palladium Centers. J Am Chem Soc 1997. [DOI: 10.1021/ja970262+] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Sakaki S, Takeuchi K, Sugimoto M, Kurosawa H. Geometries, Bonding Nature, and Relative Stabilities of Dinuclear Palladium(I) π-Allyl and Mononuclear Palladium(II) π-Allyl Complexes. A Theoretical Study. Organometallics 1997. [DOI: 10.1021/om970115k] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shigeyoshi Sakaki
- Department of Applied Chemistry and Biochemistry, Faculty of Engineering, Kumamoto University, Kurokami, Kumamoto 860, Japan
| | - Kaori Takeuchi
- Department of Applied Chemistry and Biochemistry, Faculty of Engineering, Kumamoto University, Kurokami, Kumamoto 860, Japan
| | - Manabu Sugimoto
- Department of Applied Chemistry and Biochemistry, Faculty of Engineering, Kumamoto University, Kurokami, Kumamoto 860, Japan
| | - Hideo Kurosawa
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565, Japan
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Synthesis of a tripalladium cluster containing an η1:η2:η2-bridging butadienyl ligand stabilized by a zwitterionic structure. J Organomet Chem 1997. [DOI: 10.1016/s0022-328x(96)06608-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Tanase T, Takahata H, Hasegawa M, Yamamoto Y. Di- and trinuclear complexes of palladium with a triphosphine ligand, bis(diphenylphosphinomethyl)phenylphosphine. J Organomet Chem 1997. [DOI: 10.1016/s0022-328x(97)00379-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Vilar R, Mingos DMP, Cardin CJ. Synthesis and structural characterisation of [Pd2(µ-Br)2(PBut3)2], an example of a palladium(I)–palladium(I) dimer. ACTA ACUST UNITED AC 1996. [DOI: 10.1039/dt9960004313] [Citation(s) in RCA: 88] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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