1
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Astakhov AV, Soliev SB, Gordeev EG, Chernyshev VM, Ananikov VP. Relative stabilities of M/NHC complexes (M = Ni, Pd, Pt) against R-NHC, X-NHC and X-X couplings in M(0)/M(ii) and M(ii)/M(iv) catalytic cycles: a theoretical study. Dalton Trans 2019; 48:17052-17062. [PMID: 31696883 DOI: 10.1039/c9dt03266e] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The complexes of Ni, Pd, and Pt with N-heterocyclic carbenes (NHCs) catalyze numerous organic reactions via proposed typical M0/MII catalytic cycles comprising intermediates with the metal center in (0) and (II) oxidation states. In addition, MII/MIV catalytic cycles have been proposed for a number of reactions. The catalytic intermediates in both cycles can suffer decomposition via R-NHC coupling and the side reductive elimination of the NHC ligand and R groups (R = alkyl, aryl, etc.) to give [NHC-R]+ cations. In this study, the relative stabilities of (NHC)MII(R)(X)L and (NHC)MIV(R)(X)3L intermediates (X = Cl, Br, I; L = NHC, pyridine) against R-NHC coupling and other decomposition pathways via reductive elimination reactions were evaluated theoretically. The study revealed that the R-NHC coupling represents the most favorable decomposition pathway for both types of intermediates (MII and MIV), while it is thermodynamically and kinetically more facile for the MIV complexes. The relative effects of the metal M (Ni, Pd, Pt) and ligands L and X on the R-NHC coupling for the MIV complexes were significantly stronger than that for the MII complexes. In particular, for the (NHC)2MIV(Ph)(Br)3 complexes, Ph-NHC coupling was facilitated dramatically from Pt (ΔG = -36.9 kcal mol-1, ΔG≠ = 37.5 kcal mol-1) to Pd (ΔG = -61.5 kcal mol-1, ΔG≠ = 18.3 kcal mol-1) and Ni (ΔG = -80.2 kcal mol-1, ΔG≠ = 4.7 kcal mol-1). For the MII oxidation state of the metal, the bis-NHC complexes (L = NHC) were slightly more kinetically and thermodynamically stable against R-NHC coupling than the mono-NHC complexes (L = pyridine). An inverse relation was observed for the MIV oxidation state of the metal as the (NHC)2MIV(R)(X)3 complexes were kinetically (4.3-15.9 kcal mol-1) and thermodynamically (8.0-23.2 kcal mol-1) significantly less stable than the (NHC)MIV(R)(X)3L (L = pyridine) complexes. For the NiIV and PdIV complexes, additional decomposition pathways via the reductive elimination of the NHC and X ligands to give the [NHC-X]+ cation (X-NHC coupling) or reductive elimination of the X-X molecule were found to be thermodynamically and kinetically probable. Overall, the obtained results demonstrate significant instability of regular Ni/NHC and Pd/NHC complexes (for example, not additionally stabilized by chelation) and high probability to initiate "NHC-free" catalysis in the reactions comprising MIV intermediates.
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Affiliation(s)
- Alexander V Astakhov
- Platov South-Russian State Polytechnic University (NPI), Prosveschenya 132, Novocherkassk, 346428, Russia. and Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Safarmurod B Soliev
- Platov South-Russian State Polytechnic University (NPI), Prosveschenya 132, Novocherkassk, 346428, Russia.
| | - Evgeniy G Gordeev
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Victor M Chernyshev
- Platov South-Russian State Polytechnic University (NPI), Prosveschenya 132, Novocherkassk, 346428, Russia. and Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Valentine P Ananikov
- Platov South-Russian State Polytechnic University (NPI), Prosveschenya 132, Novocherkassk, 346428, Russia. and Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
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2
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Bellemin-Laponnaz S. N-Heterocyclic Carbene Platinum Complexes: A Big Step Forward for Effective Antitumor Compounds. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900960] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Stéphane Bellemin-Laponnaz
- Institut de Physique et Chimie des Matériaux de Strasbourg; IPCMS; CNRS Université de Strasbourg; 23, rue du Loess 67034 Strasbourg France
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3
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Rehm T, Rothemund M, Dietel T, Kempe R, Schobert R. Synthesis, structures and cytotoxic effects in vitro of cis- and trans-[Pt IVCl 4(NHC) 2] complexes and their Pt II precursors. Dalton Trans 2019; 48:16358-16365. [PMID: 31624819 DOI: 10.1039/c9dt02438g] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Four new bis(N,N-dialkylbenzimidazol-2-ylidene)dichlorido platinum(ii) complexes 2 featuring N-alkyl substituents of increasing size (a: Me, b: Et, c: n-butyl, d: n-octyl) were synthesised and oxidised with PhICl2 to give the corresponding [PtIVCl4(N,N-dialkylbenzimidazol-2-ylidene)2] complexes 4 as potential anticancer prodrugs. The known bis(N,N-dibenzylimidazol-2-ylidene)dichlorido platinum(ii) complex 1 was likewise oxidised to [PtIVCl4(N,N-dibenzylimidazol-2-ylidene)2] 3. In contrast, oxidation of complexes 1 and 2 with H2O2 or hypochlorites, or exchange of chlorido for hydroxo ligands in tetrachlorido complexes 4 failed to give isolable complexes of type [PtIVCl4-n(OH)n(NHC)2]. In MTT assays the [PtIICl2(NHC)2]/[PtIVCl4(NHC)2] complex couples 1/3, 2c/4c, and trans-2c/trans-4c, bearing either N-benzyl or N-butyl substituents, each showed similar single-digit micromolar IC50 values against at least three out of five human cancer cell lines, presumably due to an intracellular reduction of the PtIV complexes to their active PtII congeners. Unlike cisplatin, whose anticancer effect requires functional p53, each of them was active both in wildtype and in p53-negative HCT116 colon carcinoma cells. In ethidium bromide saturation assays with isolated DNA, cis-(bis-NHC)PtII complexes such as 1 caused morphological DNA changes more pronounced than those initiated by cisplatin, while the corresponding cis-(bis-NHC)PtIV complexes such as 3 interacted with DNA in a less structure-modifying way.
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Affiliation(s)
- Tobias Rehm
- Organic Chemistry Laboratory, University Bayreuth, Universitaetsstrasse 30, 95440 Bayreuth, Germany.
| | - Matthias Rothemund
- Organic Chemistry Laboratory, University Bayreuth, Universitaetsstrasse 30, 95440 Bayreuth, Germany.
| | - Thomas Dietel
- Lehrstuhl fuer Anorganische Chemie II, University Bayreuth, Universitaetsstrasse 30, 95440 Bayreuth, Germany
| | - Rhett Kempe
- Lehrstuhl fuer Anorganische Chemie II, University Bayreuth, Universitaetsstrasse 30, 95440 Bayreuth, Germany
| | - Rainer Schobert
- Organic Chemistry Laboratory, University Bayreuth, Universitaetsstrasse 30, 95440 Bayreuth, Germany.
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4
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5
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Gardiner MG, Ho CC. Recent advances in bidentate bis(N-heterocyclic carbene) transition metal complexes and their applications in metal-mediated reactions. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.02.003] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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6
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Bouché M, Dahm G, Wantz M, Fournel S, Achard T, Bellemin-Laponnaz S. Platinum(iv) N-heterocyclic carbene complexes: their synthesis, characterisation and cytotoxic activity. Dalton Trans 2016; 45:11362-8. [PMID: 27331604 DOI: 10.1039/c6dt01846g] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Platinum(ii) N-heterocyclic carbene complexes have been oxidized by bromine or iodobenzene dichloride to provide the fully characterised corresponding platinum(iv) NHC complexes. Antiproliferative activities of Pt(iv) NHC complexes were assayed against several cancer cell lines and the results were correlated with respect to their stability. Mechanistic investigations revealed that mitochondrial dysfunction and ROS production were associated with the cytotoxic process induced by these compounds.
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Affiliation(s)
- M Bouché
- Institut de Physique et Chimie des Matériaux de Strasbourg, Université de Strasbourg-CNRS UMR7504, 23 rue du Loess, BP 43, 67034 Strasbourg Cedex 2, France.
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7
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An efficient method for selective oxidation of (oxime)Pt(II) to (oxime)Pt(IV) species using N,N-dichlorotosylamide. TRANSIT METAL CHEM 2016. [DOI: 10.1007/s11243-016-0034-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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8
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Chen F, Shao KJ, Xiao YC, Pu XJ, Zhu B, Jiang MJ. Synthesis and crystal structure of the rhodium(I) cyclooctadiene complex with bis(3-tert-butylimidazol-2-ylidene)borate ligand. CRYSTALLOGR REP+ 2015. [DOI: 10.1134/s106377451507007x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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Munz D, Strassner T. Alkane C-H functionalization and oxidation with molecular oxygen. Inorg Chem 2015; 54:5043-52. [PMID: 25822853 DOI: 10.1021/ic502515x] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The application of environmentally benign, cheap, and economically viable oxidation procedures is a key challenge of homogeneous, oxidative alkane functionalization. The typically harsh reaction conditions and the propensity of dioxygen for radical reactivity call for extraordinary robust catalysts. Mainly three strategies have been applied. These are (1) the combination of a catalyst responsible for C-H activation with a cocatalyst responsible for dioxygen activation, (2) transition-metal catalysts, which react with both hydrocarbons and molecular oxygen, and (3) the introduction of very robust main-group element catalysts for C-H functionalization chemistry. Herein, these three approaches will be assessed and exemplified by the reactivity of chelated palladium (N-heterocyclic carbene) catalysts in combination with a vanadium cocatalyst, the methane functionalization by cobalt catalysts, and the reaction of group XVII compounds with alkanes.
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Affiliation(s)
- Dominik Munz
- Physikalische Organische Chemie, Technische Universität Dresden, 01069 Dresden, Germany
| | - Thomas Strassner
- Physikalische Organische Chemie, Technische Universität Dresden, 01069 Dresden, Germany
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10
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Maeda Y, Hashimoto H, Kinoshita I, Nishioka T. Chelated Bis-N-heterocyclic Carbene Platinum and Palladium Units as Tunable Components of Multinuclear Complexes. Inorg Chem 2015; 54:448-59. [DOI: 10.1021/ic502039d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yuri Maeda
- Department of Chemistry, Graduate
School of Science, ‡Department of Physics, Graduate
School of Science, and §The OCU Advanced Research Institute for Natural Science
and Technology (OCARINA), Osaka City University, Osaka 558-8585, Japan
| | - Hideki Hashimoto
- Department of Chemistry, Graduate
School of Science, ‡Department of Physics, Graduate
School of Science, and §The OCU Advanced Research Institute for Natural Science
and Technology (OCARINA), Osaka City University, Osaka 558-8585, Japan
| | - Isamu Kinoshita
- Department of Chemistry, Graduate
School of Science, ‡Department of Physics, Graduate
School of Science, and §The OCU Advanced Research Institute for Natural Science
and Technology (OCARINA), Osaka City University, Osaka 558-8585, Japan
| | - Takanori Nishioka
- Department of Chemistry, Graduate
School of Science, ‡Department of Physics, Graduate
School of Science, and §The OCU Advanced Research Institute for Natural Science
and Technology (OCARINA), Osaka City University, Osaka 558-8585, Japan
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11
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12
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Pyridyl- and diphenylphosphinoethyl-functionalised N-heterocyclic carbene platinum methyl complexes. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2014.07.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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13
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Pinter P, Biffis A, Tubaro C, Tenne M, Kaliner M, Strassner T. Palladium(ii) complexes with electron-poor, 4,5-disubstituted diimidazol-2-ylidene ligands: synthesis, characterization and catalytic activity. Dalton Trans 2015; 44:9391-9. [DOI: 10.1039/c5dt01067e] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Palladium(ii) complexes with N-heterocyclic dicarbene ligands featuring electron-withdrawing substituents have been prepared and tested as catalysts in alkyne hydroarylations.
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Affiliation(s)
- Piermaria Pinter
- Dipartimento di Scienze Chimiche
- Università di Padova
- 35131 Padova
- Italy
| | - Andrea Biffis
- Dipartimento di Scienze Chimiche
- Università di Padova
- 35131 Padova
- Italy
| | - Cristina Tubaro
- Dipartimento di Scienze Chimiche
- Università di Padova
- 35131 Padova
- Italy
| | - Mario Tenne
- Fachrichtung Chemie und Lebensmittelchemie
- Technische Universität Dresden
- 01069 Dresden
- Germany
| | - Maria Kaliner
- Fachrichtung Chemie und Lebensmittelchemie
- Technische Universität Dresden
- 01069 Dresden
- Germany
| | - Thomas Strassner
- Fachrichtung Chemie und Lebensmittelchemie
- Technische Universität Dresden
- 01069 Dresden
- Germany
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14
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Liu YZ, Wang J, Wang GF, Chen L, Chen XT, Xue ZL. Synthesis and structural characterization of π-allylpalladium(II) complexes with bis(imidazol-2-ylidene)borate ligands. Polyhedron 2014. [DOI: 10.1016/j.poly.2014.04.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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15
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Munz D, Strassner T. On the Mechanism of the Palladium Bis(NHC) Complex Catalyzed CH Functionalization of Propane: Experiment and DFT Calculations. Chemistry 2014; 20:14872-9. [DOI: 10.1002/chem.201403910] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Indexed: 11/07/2022]
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16
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Baquero EA, Flores JC, Perles J, Gómez-Sal P, de Jesús E. Water-Soluble Mono- and Dimethyl N-Heterocyclic Carbene Platinum(II) Complexes: Synthesis and Reactivity. Organometallics 2014. [DOI: 10.1021/om500753v] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Edwin A. Baquero
- Departamento
de Química Orgánica y Química Inorgánica,
Campus Universitario, Universidad de Alcalá, 28871 Alcalá de
Henares, Madrid, Spain
| | - Juan C. Flores
- Departamento
de Química Orgánica y Química Inorgánica,
Campus Universitario, Universidad de Alcalá, 28871 Alcalá de
Henares, Madrid, Spain
| | - Josefina Perles
- Servicio
Interdepartamental de Investigación (SIDI), Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
| | - Pilar Gómez-Sal
- Departamento
de Química Orgánica y Química Inorgánica,
Campus Universitario, Universidad de Alcalá, 28871 Alcalá de
Henares, Madrid, Spain
| | - Ernesto de Jesús
- Departamento
de Química Orgánica y Química Inorgánica,
Campus Universitario, Universidad de Alcalá, 28871 Alcalá de
Henares, Madrid, Spain
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17
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18
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Brendel M, Braun C, Rominger F, Hofmann P. Nickel(0)- und Platin(0)-Bis-NHC-Chelatkomplexe. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201401024] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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19
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Brendel M, Braun C, Rominger F, Hofmann P. Bis-NHC Chelate Complexes of Nickel(0) and Platinum(0). Angew Chem Int Ed Engl 2014; 53:8741-5. [DOI: 10.1002/anie.201401024] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Revised: 03/17/2014] [Indexed: 11/06/2022]
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20
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Biffis A, Cipani M, Bressan E, Tubaro C, Graiff C, Venzo A. Group 10 Metal Complexes with Chelating Macrocyclic Dicarbene Ligands Bearing a 2,6-Lutidinyl Bridge: Synthesis, Reactivity, and Catalytic Activity. Organometallics 2014. [DOI: 10.1021/om401062p] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Andrea Biffis
- Dipartimento
di Scienze Chimiche, Università di Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Matteo Cipani
- Dipartimento
di Scienze Chimiche, Università di Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Edoardo Bressan
- Dipartimento
di Scienze Chimiche, Università di Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Cristina Tubaro
- Dipartimento
di Scienze Chimiche, Università di Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Claudia Graiff
- Dipartimento
di Chimica, Università di Parma, Viale delle Scienze 17/A, 43100 Parma, Italy
| | - Alfonso Venzo
- IENI-CNR,
c/o Dipartimento di Scienze Chimiche, Università di Padova, Via Marzolo
1, 35131 Padova, Italy
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21
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Propanaktivierung durch Palladiumkomplexe mit chelatisierenden Bis(NHC)-Liganden unter aerober Cooxidation. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201309568] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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22
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Munz D, Strassner T. Propane activation by palladium complexes with chelating bis(NHC) ligands and aerobic cooxidation. Angew Chem Int Ed Engl 2014; 53:2485-8. [PMID: 24482080 DOI: 10.1002/anie.201309568] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Revised: 12/02/2013] [Indexed: 11/07/2022]
Abstract
The development of efficient aerobic oxidation methods remains a challenge for the selective functionalization of C-H bonds in alkanes. Herein we report the development of a C-H functionalization procedure for propane by using a palladium catalyst with chelating bis(N-heterocyclic carbene) ligands in trifluoroacetic acid together with a vanadium co-catalyst. Halides play a decisive role in the reaction. The experimental results are presented together with supporting kinetic data and an isotope effect. The reaction can be run with dioxygen as the oxidant if vanadium salts and halides are present in the reaction mixture. Experimental as well as computational results favor a mechanism involving C-H activation by palladium(II), followed by oxidation to palladium(IV) by bromine.
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Affiliation(s)
- Dominik Munz
- Physikalische Organische Chemie, Technische Universität Dresden, 01069 Dresden (Germany)
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23
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Maeda Y, Hashimoto H, Kinoshita I, Nishioka T. π-back-bonding interaction depending on the bridging chain lengths of chelated N-heterocyclic carbene platinum units in heterometallic trinuclear complexes affecting their electrochemical property. Inorg Chem 2014; 53:661-3. [PMID: 24393033 DOI: 10.1021/ic402063f] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Newly synthesized heterometallic trinuclear M2Pt complexes (M = Rh, Ir) containing a platinum moiety having a chelated bis-N-heterocyclic carbene (bisNHC) ligand with a variety of alkylene chain lengths of the bridging part showed two reversible reduction waves in cyclic voltammetry. Only the second reduction potentials were affected by the alkyl chain lengths, which afforded different dihedral angles between the imidazolylidene rings and the platinum coordination plane resulting in the variation of π-back-donation from the platinum center to the carbene carbon atoms.
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Affiliation(s)
- Yuri Maeda
- Department of Chemistry, Graduate School of Science, Osaka City University , Sumiyoshi-ku, Osaka 558-8585, Japan
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24
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25
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26
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Guo J, Lv L, Wang X, Cao C, Pang G, Shi Y. Synthesis, structure and reactivity of NHC–nickel complexes containing carbonato ligands. INORG CHEM COMMUN 2013. [DOI: 10.1016/j.inoche.2013.03.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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27
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Baquero EA, Silbestri GF, Gómez-Sal P, Flores JC, de Jesús E. Sulfonated Water-Soluble N-Heterocyclic Carbene Silver(I) Complexes: Behavior in Aqueous Medium and as NHC-Transfer Agents to Platinum(II). Organometallics 2013. [DOI: 10.1021/om400228s] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Edwin A. Baquero
- Departamento
de Química Inorgánica, Campus Universitario, Universidad de Alcalá, 28871 Alcalá de
Henares, Madrid, Spain
| | - Gustavo F. Silbestri
- Departamento
de Química Inorgánica, Campus Universitario, Universidad de Alcalá, 28871 Alcalá de
Henares, Madrid, Spain
| | - Pilar Gómez-Sal
- Departamento
de Química Inorgánica, Campus Universitario, Universidad de Alcalá, 28871 Alcalá de
Henares, Madrid, Spain
| | - Juan C. Flores
- Departamento
de Química Inorgánica, Campus Universitario, Universidad de Alcalá, 28871 Alcalá de
Henares, Madrid, Spain
| | - Ernesto de Jesús
- Departamento
de Química Inorgánica, Campus Universitario, Universidad de Alcalá, 28871 Alcalá de
Henares, Madrid, Spain
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28
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Khlebnikov V, Heckenroth M, Müller-Bunz H, Albrecht M. Platinum(ii) and platinum(iv) complexes stabilized by abnormal/mesoionic C4-bound dicarbenes. Dalton Trans 2013; 42:4197-207. [DOI: 10.1039/c2dt32423g] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Gardiner MG, Ho CC, Mackay FM, McGuinness DS, Tucker M. Selective and adaptable access to N,N′-asymmetrically substituted imidazol-2-ylidene bis-NHC ligands: Pd(ii) complexes featuring wide variation in N-alkyl and aryl steric bulk. Dalton Trans 2013; 42:7447-57. [DOI: 10.1039/c3dt32895c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Liu X, Chen W. Pyridazine-Based N-Heterocyclic Carbene Complexes and Ruthenium-Catalyzed Oxidation Reaction of Alkenes. Organometallics 2012. [DOI: 10.1021/om300644h] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Xiaolong Liu
- Department of Chemistry, Zhejiang University, Xixi Campus, Hangzhou 310028,
People's Republic of China
| | - Wanzhi Chen
- Department of Chemistry, Zhejiang University, Xixi Campus, Hangzhou 310028,
People's Republic of China
- State Key Laboratory of Elemento-organic Chemistry, Nankai University, Tianjin 300071, People's Republic
of China
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31
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McCall AS, Kraft S. Pyridine-Assisted Chlorinations and Oxidations by Palladium(IV). Organometallics 2012. [DOI: 10.1021/om300007w] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- A. Scott McCall
- Department of Chemistry, Kansas State University, Manhattan,
Kansas 66506-0401, United States
| | - Stefan Kraft
- Department of Chemistry, Kansas State University, Manhattan,
Kansas 66506-0401, United States
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Chen JM, Zeng XM, Middleton K, Zhdankin VV. Facile preparation and reactivity of polystyrene-supported (dichloroiodo)benzene: a convenient recyclable reagent for chlorination and oxidation. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.02.065] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Chen F, Sun JF, Li TY, Chen XT, Xue ZL. Iridium(I) and Rhodium(I) Carbonyl Complexes with the Bis(3-tert-butylimidazol-2-ylidene)borate Ligand and Unusual B−H Fluorination. Organometallics 2011. [DOI: 10.1021/om200036w] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Fei Chen
- Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, Nanjing National Laboratory of Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, People’s Republic of China
| | - Jia-Feng Sun
- Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, Nanjing National Laboratory of Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, People’s Republic of China
| | - Tao-Yuan Li
- Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, Nanjing National Laboratory of Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, People’s Republic of China
| | - Xue-Tai Chen
- Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, Nanjing National Laboratory of Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, People’s Republic of China
| | - Zi-Ling Xue
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, United States
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Serra D, Cao P, Cabrera J, Padilla R, Rominger F, Limbach M. Development of Platinum(II) and -(IV) CNC Pincer Complexes and Their Application in a Hydrovinylation Reaction. Organometallics 2011. [DOI: 10.1021/om101128f] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Daniel Serra
- CaRLa, Catalysis Research Laboratory, Im Neuenheimer Feld 584, 69120 Heidelberg, Germany
| | - Peng Cao
- CaRLa, Catalysis Research Laboratory, Im Neuenheimer Feld 584, 69120 Heidelberg, Germany
| | - José Cabrera
- CaRLa, Catalysis Research Laboratory, Im Neuenheimer Feld 584, 69120 Heidelberg, Germany
| | - Robin Padilla
- CaRLa, Catalysis Research Laboratory, Im Neuenheimer Feld 584, 69120 Heidelberg, Germany
| | - Frank Rominger
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, 69120 Heidelberg, Germany
| | - Michael Limbach
- CaRLa, Catalysis Research Laboratory, Im Neuenheimer Feld 584, 69120 Heidelberg, Germany
- BASF SE, Basic Chemicals Research, GCB/C−M313, 67056 Ludwigshafen, Germany
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Schulz T, Ahrens S, Meyer D, Allolio C, Peritz A, Strassner T. Electronic Effects of para-Substitution on the Melting Points of TAAILs. Chem Asian J 2011; 6:863-7. [DOI: 10.1002/asia.201000744] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2010] [Indexed: 11/11/2022]
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Jamali S, Milić D, Kia R, Mazloomi Z, Abdolahi H. Organoplatinum(ii) complexes containing chelating or bridging bis(N-heterocyclic carbene) ligands: formation of a platinum(ii) carbonate complex by aerial CO2 fixation. Dalton Trans 2011; 40:9362-5. [DOI: 10.1039/c1dt10736d] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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