Synthesis of New Iron and Nickel Complexes

Synthesis of New Iron and Nickel Complexes PDF Author: Anthony Kermagoret
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description
My Ph-D thesis concerns the study of the catalytic oligomerization reaction with nickel, iron and cobalt complexes coordinated by N-O, P-N, N-P-N, P-O and P-N-P type ligands with a N donor atom represented by an oxazoline or a pyridine heterocycle. These complexes activated by a cocatalyst such as MAO or AlEtCl2 showed high activities and a high selectivity of C4 olefins in ethylene oligomerization. The nickel complexes with P-N chelates showed a high impact of the P substituents on the oligomerization selectivities. Moreover, the crystallographic studies on nickel complexes coordinated by N-O and P-N type ligands showed the formation of mono-, di- and tetranuclear complexes. The cobalt, iron and palladium complexes with N-P-N ligands highlighted original N-N, P-N or N-P-N coordination modes of the ligands influenced by the ligand substituents and the metal center.

Synthesis of New Iron and Nickel Complexes

Synthesis of New Iron and Nickel Complexes PDF Author: Anthony Kermagoret
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description
My Ph-D thesis concerns the study of the catalytic oligomerization reaction with nickel, iron and cobalt complexes coordinated by N-O, P-N, N-P-N, P-O and P-N-P type ligands with a N donor atom represented by an oxazoline or a pyridine heterocycle. These complexes activated by a cocatalyst such as MAO or AlEtCl2 showed high activities and a high selectivity of C4 olefins in ethylene oligomerization. The nickel complexes with P-N chelates showed a high impact of the P substituents on the oligomerization selectivities. Moreover, the crystallographic studies on nickel complexes coordinated by N-O and P-N type ligands showed the formation of mono-, di- and tetranuclear complexes. The cobalt, iron and palladium complexes with N-P-N ligands highlighted original N-N, P-N or N-P-N coordination modes of the ligands influenced by the ligand substituents and the metal center.

Synthesis of Chromium, Iron, and Nickel Complexes Using Aryl-based Chelates as Ancillary Ligands and a Series of Bis([alpha]-iminopyridyl) Iron Compounds with Varying Donor Ligands

Synthesis of Chromium, Iron, and Nickel Complexes Using Aryl-based Chelates as Ancillary Ligands and a Series of Bis([alpha]-iminopyridyl) Iron Compounds with Varying Donor Ligands PDF Author: Emily C. Volpe
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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Book Description
Several classes of aryl-based chelates containing pyridine, oxazoline, or imine donors and their reactivity with 1st-row transition metals were investigated in light of the potential of carbon-based ligands to impart strong ligand fields. Heterolytic C-H bond activation of 2-phenylpyridine was achieved with Ni(OTf)2. The cyclometalated product and its derivatives undergo substitution, insertion, and additional cyclometalation reactions. Aryl-oxazolines display a range of reactivity patterns which are dependent on the reaction conditions, the metal, and the particular ligand employed. Aryl-aryl coupling, oxazoline ring-opening, and methylene deprotonation were examined, but were tangential to the goal of making metal-aryl bonds. Successful arylation of nickel, iron and chromium was accomplished using a methylated benzyl-oxazoline aryl anion, and the spectroscopic, structural, and magnetic properties of these complexes are described. Tridentate arylpyridylimines or diarylimines undergo facile arylation with cis-(Me3P)4Fe(Me)2 to give low-spin, sixcoordinate iron compounds. Their thermal and oxidation behavior are studied, and the spectroscopic properties of their azaallyl derivatives are compared to previouslyreported, related species. A highly-fluorinated congener of the diarylimine iron complexes was sought, and preliminary evidence of its divergent reactivity is noted. Finally, a series of iminopyridine complexes of the formula (N,N'-[alpha]- iminopyridyl)2Fe(L/X)n have been examined by X-ray and Mossbauer spectroscopy. The redox-active nature of the iminopyridine ligands and the donating ability of the additional L/X ligands have been assessed.

Synthesis of New Nickel Complexes with N, S-ligand Systems

Synthesis of New Nickel Complexes with N, S-ligand Systems PDF Author: Christopher B. Lavery
Publisher:
ISBN:
Category : Catalysis
Languages : en
Pages : 122

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Synthesis and Structural Characterization of Transition Metal Cluster Compounds of Iron and Nickel

Synthesis and Structural Characterization of Transition Metal Cluster Compounds of Iron and Nickel PDF Author: Candice J. Kreese-Foley
Publisher:
ISBN:
Category : Iron compounds
Languages : en
Pages : 360

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Synthesis, Reactions, and Properties of Iron, Cobalt and Nickel Complexes Containing Some (P,S)-chelating Ligands and Trimethylphosphine

Synthesis, Reactions, and Properties of Iron, Cobalt and Nickel Complexes Containing Some (P,S)-chelating Ligands and Trimethylphosphine PDF Author: Hamdi Bennour
Publisher:
ISBN:
Category :
Languages : en
Pages : 159

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Synthesis of Iron, Cobalt, Nickel and Copper

Synthesis of Iron, Cobalt, Nickel and Copper PDF Author: Steven Douglas McKee
Publisher:
ISBN:
Category : Iron-nickel-cobalt alloys
Languages : en
Pages : 134

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The Organic Chemistry of Nickel

The Organic Chemistry of Nickel PDF Author: P.W. Jolly
Publisher: Elsevier
ISBN: 0323151302
Category : Science
Languages : en
Pages : 417

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Book Description
The Organic Chemistry of Nickel, Volume II: Organic Synthesis describes the chemistry of the organonickel complexes and the use of nickel in organic synthesis. Composed of six chapters, this volume starts with discussions on the oligomerization, co-oligomerization, and polymerization of olefins, followed by short accounts of the mechanistically related isomerization and hydrogenation of olefins, as well as the hydrosilylation and hydrocyanation reactions. Chapter II examines the oligomerization of acetylene and substituted alkynes, the co-oligomerization of alkynes with olefins, the related oligomerization of allene, including a number of telomerization reactions involving alkynes or allenes. Chapters III and IV describe the oligomerization, co-oligomerization, and polymerization of butadiene and substituted 1,3-dienes. Chapter V explores the coupling of organic halides in the presence of stoichiometric amounts of zerovalent nickel complexes, and the nickel-catalyzed cross-coupling reaction between organic halides and Grignard reagents. Lastly, Chapter VI emphasizes the carbonylation of alkynes, olefins, and organic halides using nickel complexes. This book will be of great value to organic chemists and researchers who are interested in the application of nickel complexes to organic synthesis.

Design, Synthesis and Characterization of New Ligands and Activators for the Oligomerization of Ethylene by Iron Complexes

Design, Synthesis and Characterization of New Ligands and Activators for the Oligomerization of Ethylene by Iron Complexes PDF Author: Adrien Boudier
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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Book Description
This thesis describes the development of new catalytic systems based upon iron complexes and their reactivity toward ethylene. First, we focused our interest on the synthesis of iron(III) precursors chelated by monoanionic ligand. Those complexes were obtained either by reaction of the monoanionic ligand with FeCl3 or through oxidation of the iron(II) complex. The second reaction led to binuclear complexes. Then, another aim of the thesis was to design new well-defined cocatalysts for the activation of iron complexes. The study of the reaction between an alcohol and the trimethylaluminum allowed us to reach this aim. Aluminum complexes adopted either a binuclear framework or a trinuclear one, depending on the nature of alcohol reagent. Besides this work, new iron(II) and nickel(II) complexes chelated by imino-imidazole ligands bearing a pendant donor function L were synthesized. All complexes have been evaluated for the oligomerization of ethylene in the presence of EtAlCl2 or MAO as cocatalyst. Only nickel complexes were active toward ethylene transformation.

The Synthesis and Characterization of New Neutral Nickel Complexes Containing the Tetrathioethylene Unit

The Synthesis and Characterization of New Neutral Nickel Complexes Containing the Tetrathioethylene Unit PDF Author: Kimberly A. Proctor
Publisher:
ISBN:
Category :
Languages : en
Pages : 266

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Nickel Catalysis in Organic Synthesis

Nickel Catalysis in Organic Synthesis PDF Author: Sensuke Ogoshi
Publisher: John Wiley & Sons
ISBN: 3527344071
Category : Science
Languages : en
Pages : 348

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Book Description
A comprehensive reference to nickel chemistry for every scientist working with organometallic catalysts Written by one of the world?s leading reseachers in the field, Nickel Catalysis in Organic Synthesis presents a comprehensive review of the high potential of modern nickel catalysis and its application in synthesis. Structured in a clear and assessible manner, the book offers a collection of various reaction types, such as cross-coupling reactions, reactions for the activation of unreactive bonds, carbon dioxide fixation, and many more. Nickel has been recognized as one of the most interesting transition metals for homogeneous catalysis. This book offers an overview to the recently developed new ligands, new reaction conditions, and new apparatus to control the reactivity of nickel catalysts, allowing scientists to apply nickel catalysts to a variety of bond-forming reactions. A must-read for anyone working with organometallic compounds and their application in organic synthesis, this important guide: -Reviews the numerous applications of nickel catalysis in synthesis -Explores the use of nickel as a relatively cheap and earth-abundant metal -Examines the versatility of nickel catalysis in reactions like cross-coupling reactions and CH activations -Offers a resource for academics and industry professionals Written for catalytic chemists, organic chemists, inorganic chemists, structural chemists, and chemists in industry, Nickel Catalysis in Organic Synthesis provides a much-needed overview of the most recent developments in modern nickel catalysis and its application in synthesis.