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Activation Of Strong Carbon Hydrogen And Carbon Carbon Bonds In Cationic Complexes Of Rhodium Including Effects Of Carbon Monoxide
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Book Synopsis Activation of Strong Carbon-hydrogen and Carbon-carbon Bonds in Cationic Complexes of Rhodium Including Effects of Carbon Monoxide by : Michael Montag
Download or read book Activation of Strong Carbon-hydrogen and Carbon-carbon Bonds in Cationic Complexes of Rhodium Including Effects of Carbon Monoxide written by Michael Montag and published by . This book was released on 2008 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Centre de recherche de l'Univ. de Paris VIII, Vincennes. Groupe Cultures, idéologies et sociétés des XIXe et XXe siècles by :
Download or read book Centre de recherche de l'Univ. de Paris VIII, Vincennes. Groupe Cultures, idéologies et sociétés des XIXe et XXe siècles written by and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Carbon-hydrogen, Silicon-hydrogen, and Carbon-carbon Bond Activation Chemistry Using Cationic Rh(III) Complexes by : Felicia L. Taw
Download or read book Carbon-hydrogen, Silicon-hydrogen, and Carbon-carbon Bond Activation Chemistry Using Cationic Rh(III) Complexes written by Felicia L. Taw and published by . This book was released on 2002 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Transition Metal-mediated Carbon-heteroatom Bond Activation by : Aaron Patrick Walsh
Download or read book Transition Metal-mediated Carbon-heteroatom Bond Activation written by Aaron Patrick Walsh and published by . This book was released on 2015 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Two transition metal-mediated systems were studied to understand6 the dominant and fundamental factors involved in controlling the reactivity of activation of relatively strong carbon-heteroatom bonds. The metal arene dimeric complex, [Cp*RhCl2]2, was used to facilitate ortho-directed carbon-hydrogen bond activation with the assistance of the exogenous organic base sodium acetate and derivatives thereof to explore the influence of pKa on the concerted metalation-deprotonation pathway and the implications the effect has in the overall cyclometalation of the substrate. In general, the cyclometalation of 2-(4-methoxyphenyl)pyridine by [Cp*RhCl2]2 is affected by two characteristics of the carboxylate additive: the pKa and steric bulk. In this study we sought to explore the ability of [Cp*RhCl2]2, and similar species, such as [Cp*IrCl2]2 and [(p-cymene)RuCl2]2, to activate carbon-hydrogen bonds of ortho-alkylated aromatic isocyanides by electrophilic means via the concerted metalation-deprotonation pathway. Eighteen new electrophilic metal-isocyanide complexes were synthesized and fully characterized. Isocyanide induced cleavage of the dimer, [LMCl2]2 {LM = Cp*Ir, Cp*Rh, or (p-cymene)Ru}, with 2,6-xylylisocyanide or 2,6-diethylphenylisocyanide produced complexes of the general formula LM(CNAr)Cl2. Halide metathesis of the dichloride complexes with sodium iodide produced the corresponding complexes with the general formula LM(CNAr)I2. For the analogous ruthenium complexes better results were achieved via isocyanide induced cleavage of [(p-cymene)RuI2]2. From these neutral complexes, reaction with AgPF6 in acetonitrile gave cationic, solvent-coordinated complexes that are chiral-at-metal. They have been fully characterized and crystallize as racemates. Reactions with rhodium gave either the previously unreported [Cp*RhCl(MeCN)]2[(PF6)2] when starting from Cp*Rh(CNAr)Cl2, or [Cp*Rh(MeCN)3][(PF6)2] and Cp*Rh(CNAr)I2 when starting from Cp*Rh(CNAr)I2. Several bases were probed to see if C-H activation at a benzylic position to create a novel metallacycle could be induced, but were not successful in any case. The other system studied the reactivity of the {(dippe)Pt0} (dippe = (iPr)2PCH2CH2P(iPr)2) fragment with carbon-chalcogenide bonds and mechanistic pathways that could be involved in cleaving these bonds and subsequent reactions that occur to account for the observed products. The precursor complex, (dippe)Pt(NBE)2 (NBE = norbornene), oxidatively adds both carbon-sulfur and carbon-oxygen bonds. In the case of carbon-sulfur bond activation the platinum fragment reacts with cyclic and linear thioethers, upon heating, to give oxidative addition products. Further heating leads to disproportionation and concomitant formation of desulfurized organic by-products and platinum-bisthiolate complexes, (dippe)Pt(SR)2, in several cases. Furthermore, the platinum fragment also oxidatively adds a variety of esters upon heating in which the less reactive, ether carbon-oxygen bond is cleaved to yield alkyl-, and aryl-platinum carboxylates, (dippe)Pt(OCOR)2. Further heating, again, leads to disproportionation and concomitant formation of deoxygenated organic by-products and platinum-biscarboxylate."--Pages vii-viii.
Book Synopsis Carbon Dioxide Activation by Metal Complexes by : Arno Behr
Download or read book Carbon Dioxide Activation by Metal Complexes written by Arno Behr and published by . This book was released on 1988 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Mechanism of Carbon-hydrogen Bond Activation with Hard-ligated Rhodium Complexes by : Chunming Wang
Download or read book The Mechanism of Carbon-hydrogen Bond Activation with Hard-ligated Rhodium Complexes written by Chunming Wang and published by . This book was released on 1994 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of Carbon-hydrogen Bond Activation Using Cationic Rhodium and Iridium Catalysts by : 土釜恭直
Download or read book Development of Carbon-hydrogen Bond Activation Using Cationic Rhodium and Iridium Catalysts written by 土釜恭直 and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Carbon-hydrogen Bond Activation and Catalytic Hydrocarbon Functionalization with Rhodium Isocyanide Complexes by : Edward T. Hessell
Download or read book Carbon-hydrogen Bond Activation and Catalytic Hydrocarbon Functionalization with Rhodium Isocyanide Complexes written by Edward T. Hessell and published by . This book was released on 1991 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Activation of Carbon-hydrogen Bonds in Alkanes and Other Organic Molecules Using Organotransition Metal Complexes by :
Download or read book Activation of Carbon-hydrogen Bonds in Alkanes and Other Organic Molecules Using Organotransition Metal Complexes written by and published by . This book was released on 1991 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have recently begun to investigate the interaction of C-H activating iridium and rhodium complexes with functionalized organic molecules, to determine the effect of functional groups on the process, as well as to investigate the propensity of Ir and Rh to insert into C-H versus other types of X-H bonds. Recent experiments have demonstrated that xenon liquefied at -70°C and 10 atm pressure serves as an inert solvent for the C-H oxidative addition reaction. We have been able to prepare and isolate, for the first time, C-H oxidative addition products formed from high-melting solid substrates such as naphthalene, adamantane, and even cubane; the latter case represents the first observation of C-H oxidative addition at a tertiary C-H bond. Liquid xenon has also allowed us to carry out more conveniently the C-H oxidative addition reactions of low-boiling gases that are difficult to liquefy, such as methane. Recently we have also been able to carry out analogous studies in the gas phase. Under these conditions, ''naked'' rather than solvated Cp*Rh(CO) is formed, and this species reacts with cyclohexane at nearly gas-kinetic rates. Under the conditions, collision between Cp*Rh(CO) and cyclohexane is the slowest step in the overall C-H activation process. In contrast, in solution association of solvent with free Cp*Rh(CO) is so rapid that the step involving C-H bond cleavage in the coordinated alkane complex becomes rate-determining. 3 refs., 5 figs.
Book Synopsis Metal Catalyzed Reductive C-C Bond Formation by : Michael J Krische
Download or read book Metal Catalyzed Reductive C-C Bond Formation written by Michael J Krische and published by Springer Science & Business Media. This book was released on 2007-10-05 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: With contributions by numerous experts
Book Synopsis Activation and Functionalization of C-H Bonds by : Karen I. Goldberg
Download or read book Activation and Functionalization of C-H Bonds written by Karen I. Goldberg and published by ACS Symposium. This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Activation and Functionalization of C-H Bonds explores recent developments in the reaction chemistry of solution-phase transition-metal based systems with simple hydrocarbons and with more complex organic molecules. More than 20 internationally leading research groups contributed to this volume, and their chapters cover such topics as fundamental theoretical and mechanistic studies of C-H bond activation by metal complexes, catalytic systems for alkane functionalization, and new applications in synthetic organic chemistry. An introductory chapter offers an overview of stoichiometric and catalytic reactions of C-H bonds with transition metal complexes. The C-H bond is the most widespread linkage in organic chemistry, present in virtually every organic molecule. Unfortunately, C-H bonds are famously resistant to selective chemical transformations. The development of methods for their selective transformations has enormous potential value in fields ranging from the chemistry of fuels (for example, the conversion of methane to methanol) to the synthesis of the most complex organic molecules.
Book Synopsis Intermolecular and Intramolecular Carbon-hydrogen Bond Activation with Pentamethylcyclopentadienyl-rhodium-phosphine Complexes by : Valerie L. Chandler
Download or read book Intermolecular and Intramolecular Carbon-hydrogen Bond Activation with Pentamethylcyclopentadienyl-rhodium-phosphine Complexes written by Valerie L. Chandler and published by . This book was released on 1989 with total page 938 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Selective Carbon(CO)-carbon([alpha] Bond Activation of Ketones by Rhodium Porphyrin Complex and Aldehydic Carbon-hydrogen Bond Activation by Iridium Porphyrin Complex by : Chung Sum Chan
Download or read book Selective Carbon(CO)-carbon([alpha] Bond Activation of Ketones by Rhodium Porphyrin Complex and Aldehydic Carbon-hydrogen Bond Activation by Iridium Porphyrin Complex written by Chung Sum Chan and published by . This book was released on 2013 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research focuses on the bond activation chemistry by rhodium and iridium porphyrin complexes with ketones and aldehyde respectively.
Book Synopsis Activation of Unreactive Bonds and Organic Synthesis by : Shinji Murai
Download or read book Activation of Unreactive Bonds and Organic Synthesis written by Shinji Murai and published by Springer. This book was released on 2003-07-01 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last few years a large repetoire of methods for the activation of unreactive organic functionalities and for their use in organic synthesis has been developed. In this volume, areas ranging from the activation of C-H bonds to the chemical transformation of dinitrogen are authoritatively discussed by leading experts in the field. To activate means to be able to cleave otherwise inert chemical bonds. The cleavage and formation of chemical bonds is fundamental to organic synthesis; these new activation methodologies make hitherto infeasible reactions extremely easy and create new opportunities for innovative organic transformations, for both industry and academia. This is the first book that provides a thorough and timely coverage of both inorganic and organic synthetic aspects of bond activation, thus giving a broad overview of the field and allowing both inorganic and organic chemists ready access to the methodologies involved.
Book Synopsis Organometallic Pincer Chemistry by : Gerard van Koten
Download or read book Organometallic Pincer Chemistry written by Gerard van Koten and published by Springer. This book was released on 2012-09-17 with total page 363 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gerard van Koten: The Mono-anionic ECE-Pincer Ligand - a Versatile Privileged Ligand Platform: General Considerations.- Elena Poverenov, David Milstein: Non-Innocent Behavior of PCP and PCN Pincer Ligands of Late Metal Complexes.- Dean M. Roddick: Tuning of PCP Pincer Ligand Electronic and Steric Properties.- Gemma R. Freeman, J. A. Gareth Williams: Metal Complexes of Pincer Ligands: Excited States, Photochemistry, and Luminescence.- Davit Zargarian, Annie Castonguay, Denis M. Spasyuk: ECE-Type Pincer Complexes of Nickel.- Roman Jambor and Libor Dostál: The Chemistry of Pincer Complexes of 13 - 15 Main Group Elements.- Kálmán J. Szabo: Pincer Complexes as Catalysts in Organic Chemistry.- Jun-ichi Ito and Hisao Nishiyama: Optically Active Bis(oxazolinyl)phenyl Metal Complexes as Multi-potent Catalysts.- Anthony St. John, Karen I. Goldberg, and D. Michael Heinekey: Pincer Complexes as Catalysts for Amine Borane Dehydrogenation.- Dmitri Gelman and Ronit Romm: PC(sp3)P Transition Metal Pincer Complexes: Properties and Catalytic Applications.- Jennifer Hawk and Steve Craig: Physical Applications of Pincer Complexes.
Book Synopsis The Investigation of Carbon-hydrogen Bond Activation by a Rhodiumtrispyrazolylborate Complex by : Andrew James Vetter
Download or read book The Investigation of Carbon-hydrogen Bond Activation by a Rhodiumtrispyrazolylborate Complex written by Andrew James Vetter and published by . This book was released on 2005 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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