Academic literature on the topic 'Triscarbène'

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Journal articles on the topic "Triscarbène"

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Kernbach, Ulrich, Matthias Ramm, Peter Luger, and Wolf P. Fehlhammer. "A Chelating Triscarbene Ligand and Its Hexacarbene Iron Complex." Angewandte Chemie International Edition in English 35, no. 3 (February 16, 1996): 310–12. http://dx.doi.org/10.1002/anie.199603101.

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Kernbach, Ulrich, Matthias Ramm, Peter Luger, and Wolf P. Fehlhammer. "Ein Triscarben-Chelatligand und sein Hexacarbeneisenkomplex." Angewandte Chemie 108, no. 3 (February 5, 1996): 333–35. http://dx.doi.org/10.1002/ange.19961080313.

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Cheong, Yeon-Joo, Kihyuk Sung, Jin-A. Kim, Yu Kwon Kim, Woojin Yoon, Hoseop Yun, and Hye-Young Jang. "Iridium(NHC)-Catalyzed Sustainable Transfer Hydrogenation of CO2 and Inorganic Carbonates." Catalysts 11, no. 6 (May 31, 2021): 695. http://dx.doi.org/10.3390/catal11060695.

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Iridium(NHC)-catalyzed transfer hydrogenation (TH) of CO2 and inorganic carbonates with glycerol were conducted, demonstrating excellent turnover numbers (TONs) and turnover frequencies (TOFs) for the formation of formate and lactate. Regardless of carbon sources, excellent TOFs of formate were observed (CO2: 10,000 h−1 and K2CO3: 10,150 h−1). Iridium catalysts modified with the triscarbene ligand showed excellent catalytic activity at 200 °C and are a suitable choice for this transformation which requires a high temperature for high TONs of formate. On the basis of the control experiments, the transfer hydrogenation mechanism of CO2 was proposed.
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Biffis, Andrea, Giancarlo Gioia Lobbia, Grazia Papini, Maura Pellei, Carlo Santini, Elena Scattolin, and Cristina Tubaro. "Novel scorpionate-type triscarbene ligands and their silver and gold complexes." Journal of Organometallic Chemistry 693, no. 25 (December 2008): 3760–66. http://dx.doi.org/10.1016/j.jorganchem.2008.09.019.

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Biffis, Andrea, Cristina Tubaro, Elena Scattolin, Marino Basato, Grazia Papini, Carlo Santini, Eleuterio Alvarez, and Salvador Conejero. "Trinuclear copper(I) complexes with triscarbene ligands: catalysis of C–N and C–C coupling reactions." Dalton Transactions, no. 35 (2009): 7223. http://dx.doi.org/10.1039/b906730b.

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Nakai, Hidetaka, Yongjun Tang, Peter Gantzel, and Karsten Meyer. "A new entry to N-heterocyclic carbene chemistry: synthesis and characterisation of a triscarbene complex of thallium(i)." Chem. Commun., no. 1 (2003): 24–25. http://dx.doi.org/10.1039/b209071f.

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Becker, Eva, Verena Stingl, Kurt Mereiter, and Karl Kirchner. "Formation of a Half-Sandwich Triscarbene Ruthenium Complex: Oxidative Coupling of 2,7-Nonadiyne Mediated by [RuCp(IPri)(CH3CN)2]+(IPri= 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene)." Organometallics 25, no. 17 (August 2006): 4166–69. http://dx.doi.org/10.1021/om060345b.

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Sung, Kihyuk, Mi‐hyun Lee, Yeon‐Joo Cheong, and Hye‐Young Jang. "Ir(triscarbene)‐catalyzed sustainable transfer hydrogenation of levulinic acid to γ‐valerolactone." Applied Organometallic Chemistry, November 17, 2020. http://dx.doi.org/10.1002/aoc.6105.

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Dissertations / Theses on the topic "Triscarbène"

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Nguyen, Viet Hoang. "Complexes imido de titane présentant un bras fonctionnel pour l'oligomérisation ou la polymérisation de l'éthylène." Toulouse 3, 2011. http://thesesups.ups-tlse.fr/1508/.

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Cette thèse présente la synthèse de complexes des groupes 4 et 6 pour l'oligomérisation et/ou la polymérisation de l'éthylène. Nous détaillons la synthèse de nouveaux pro-ligands, les études de complexation et la réactivité catalytique de ces nouveaux composés vis-à-vis de l'oligomérisation et de la polymérisation de l'éthylène. Dans le premier chapitre, nous présentons nos objectifs et une partie bibliographie sur les complexes imido de titane ainsi que brièvement sur les systèmes catalytiques d'oligomérisation et de polymérisation de l'éthylène. Le chapitre 2 contient la synthèse détaillée des anilines fonctionnalisées préparées lors de ce travail et qui ont été utilisées comme pro-ligands pour générer la fonction imido comme décrit au chapitre suivant. Le chapitre 3 traite de la complexation des anilines fonctionnalisées et de l'étude de leur propriété de chélation et d'hémilabilité. La complexation des anilines fonctionnalisées se fait par la réaction entre les anilines et Ti(NMe2)4/TMSCl. Cette complexation conduit au complexe imido de titane correspondant avec un bon rendement. La plupart de ces complexes sont de formule Ti(=NAr)Cl2(NHMe2)2 (ArNH2 : aniline fonctionnalisée), comportant un ligand imido monodentate, à l'exception de ceux qui ont un substituant pyridine. Dans ces derniers cas, il se forme des complexes neutres ou ioniques où le ligand imido est chélate. Les études catalytiques en oligomérisation/polymérisation de l'éthylène, réalisées en collaboration avec l'IFP Energie Nouvelle, sont décrites au chapitre 4. Nous avons testé les complexes imido de titane et de tungstène en présence d'un activateur (MAO, Et3Al, Et2AlCl). Les complexes imido de titane sont actifs en catalyse de polymérisation de l'éthylène, alors que les complexes imido de tungstène se sont montrés actifs en dimérisation de l'éthylène. Le dernier chapitre présente la synthèse, la caractérisation, et les propriétés catalytiques de complexes triscarbèniques de chrome
This thesis presents the synthesis of complexes of groups 4 and 6 for the oligomerization and/or the polymerization of ethylene. We describe the synthesis of new pro-ligands, the complexation and the catalytic reactivity of these new compounds toward the oligomerization and the polymerization of ethylene. In the first chapter, we present our objectives and a bibliographical part on imido complexes of titanium and also on catalytic systems for the oligomerization and polymerization of ethylene. The second chapter describes in detail the preparation of fonctionnalised anilines that will be used as pro-ligands for the generation of the imido function in the next chapter. In the third chapter, we report the complexation of the fonctionalised anilines to give titanium imido complexes and the study of the hemilabile properties of these ligands. The complexation has been done by the reaction between these anilines and Ti(NMe2)4/TMSCl. Most of the imido complexes have the formula Ti(=NAr)Cl2(NHMe2)2 (ArNH2: fonctionnalised aniline), where the imido is monodentate. Some imido ligands which contain the pendant pyridine substituent can be bidentate. The study of the catalytic oligomerization/polymerization of ethylene with these complexes is presented in the fourth chapter. It has been realized in collaboration with IFP Energies Nouvelles. We have tested imido complexes of titanium and tungsten in the presence of an activator (MAO, Et3Al, Et2AlCl). The imido complexes of titanium are active catalysts for the polymerization of ethylene. The imido complexes of tungsten are active for ethylene dimerization. A fifth chapter presents the synthesis, characterization and catalytic properties of triscarbene complexes of chromium. An experimental section closes the thesis
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