Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Synthesis Characterization And Reactivity Of Rhodium And Iridium Phosphine Complexes Containing Sulfur Ligands Resulting From Reactions With H2s
Download Synthesis Characterization And Reactivity Of Rhodium And Iridium Phosphine Complexes Containing Sulfur Ligands Resulting From Reactions With H2s full books in PDF, epub, and Kindle. Read online Synthesis Characterization And Reactivity Of Rhodium And Iridium Phosphine Complexes Containing Sulfur Ligands Resulting From Reactions With H2s ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Synthesis, Characterization, and Reactivity of Rhodium and Iridium Phosphine Complexes Containing Sulfur Ligands Resulting from Reactions with H2S by : Ann Marie Mueting
Download or read book Synthesis, Characterization, and Reactivity of Rhodium and Iridium Phosphine Complexes Containing Sulfur Ligands Resulting from Reactions with H2S written by Ann Marie Mueting and published by . This book was released on 1985 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1988 with total page 884 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Comprehensive Dissertation Index by :
Download or read book Comprehensive Dissertation Index written by and published by . This book was released on 1989 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis American Doctoral Dissertations by :
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1999 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Doctoral Degree Recipients by : University of Minnesota
Download or read book Doctoral Degree Recipients written by University of Minnesota and published by . This book was released on 1985 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis, Characterization and Reactivity of Rhodium- and Iridium-iminophosphorane Complexes by : Pieter Imhof
Download or read book Synthesis, Characterization and Reactivity of Rhodium- and Iridium-iminophosphorane Complexes written by Pieter Imhof and published by . This book was released on 1990 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Commencement by : University of Minnesota
Download or read book Commencement written by University of Minnesota and published by . This book was released on 1985 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Faculties, Publications, and Doctoral Theses in Chemistry and Chemical Engineering at United States Universities by : American Chemical Society. Committee on Professional Training
Download or read book Faculties, Publications, and Doctoral Theses in Chemistry and Chemical Engineering at United States Universities written by American Chemical Society. Committee on Professional Training and published by . This book was released on 1991 with total page 1646 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Reactivity of Neutral and Anionic Complexes of Rhodium(I) and Iridium(I) Containing Bulky Chelating Phosphines by : Alan Anthony Del Paggio
Download or read book The Reactivity of Neutral and Anionic Complexes of Rhodium(I) and Iridium(I) Containing Bulky Chelating Phosphines written by Alan Anthony Del Paggio and published by . This book was released on 1986 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Water-soluble Iridium and Rhodium Complexes by : Julia Knapp
Download or read book Water-soluble Iridium and Rhodium Complexes written by Julia Knapp and published by . This book was released on 2018 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aspects of C-H Activation in Metal Complexes Containing Sulfur Ligands by :
Download or read book Aspects of C-H Activation in Metal Complexes Containing Sulfur Ligands written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The research project proposed to synthesize new metal complexes with sulfido, disulfido and other types of reactive sulfur ligands, and to explore the joint reactivity of metal and sulfur ligands with hydrogen and organic molecules. The overall objective was to investigate reaction pathways relevant to those observed for the heterogeneous metal sulfide catalysts which promote hydrogen activation, hydrogenation-dehydrogenation of organic substrates, and hydrogenolysis of carbon-heteroatom bonds. Particular emphasis was placed on CpRe derivatives (where Cp might be C5H5 or alkylated versions) so that comparisons could be made with the previously studied CpMo complexes, which showed extensive reactivity at the sulfur ligands. Heterogeneous rhenium sulfides generally show higher catalytic activity than molybdenum sulfides, and this is attributed, in part, to the weaker Re-S bond strength, relative to the moybdenum-sulfur bond. In our studies of discrete Re-sulfide complexes, we have also observed evidence for weaker Re-S bonds relative to the molybdenum systems. In addition we have characterized novel hydrogen activation by rhenium sulfido complexes, as well as carbon-hydrogen, carbon-sulfur and metal sulfur bond cleavage reactions. Hydrogen Activation. The complex Cpà ̄Â?Â[1/2]ReCl2S3 was synthesized in ca 70% yield and characterized by an X-ray diffraction study which confirms that the complex contains a h2-trisulfide ligand. The cyclic voltammogram of Cpà ̄Â?Â[1/2]ReCl2S3 shows a wide window of redox stability with an irreversible reduction wave at à ̄Â?Â[1/2]0.97 V and an irreversible oxidation at +1.03 V vs Fc. Nevertheless, the complex undergoes a facile reaction with hydrogen at 50oC to form H2S and a new dinuclear sulfido bridged rhenium complex. This reaction is of interest because it is the first example of the hydrogenolysis of a discrete metal polysulfide complex to produce H2S, a reaction also observed for heterogeneous rhenium sulfides. The reaction contrasts with those of related Cp-molybdenum complexes with sulfide ligands, which also activate hydrogen, but generally form hydrosulfido products without H2S elimination. C-H and C-S Cleavage Reactions. New mononuclear Cp'Re(dithiolate) complexes such as Cpà ̄Â?Â[1/2]ReCl2(SC2H4S), 1, have been prepared and characterized and have been found to display a very interesting range of reactions. The thermal reaction of 1 involves the dehydrogenation of the alkanedithiolate ligand to form Cp'ReCl2(SCH=CHS), 2 as well as a competing elimination of olefin from the dithiolate ligand in 1. On the basic of kinetic and related studies, the mechanism is proposed to involve a sequential series of reactions. In the first reaction, the olefin extrusion is proposed to produce a reactive Re-disulfide or Re-bis(sulfido) intermediate, CpReCl2S2 which serves as an oxidant for the dithiolate complex 1. The ability of the bis sulfido complex to dehydrogenate hydrocarbons is a unique feature and several additional dehydrogenation reactions with this system have been characterized, including the oxidation of other dithiolate complexes, of tetrahydro-naphthalene and of cyclohexadiene. Precedents for the role of metal sulfides in dehydrogenation reactions have been reported for heterogeneous metal sulfide surfaces. This work has begun to provide information about the electronic and structural features necessary for such reactivity. Carbon Sulfur Bond Formation. When the thermal reaction of 1 was carried out in the presence of excess dry ethene a new reaction was observed in which the dithiolate ligand is displaced by incoming olefin to form the cyclic organic product, 1,4-dithiane. The Re product is identified as Cpà ̄Â?Â[1/2]Re(alkene)Cl2 on the basis of NMR and mass spectroscopic data. Similar reactions with alkynes have been found to form unsaturated 6-membered rings and reactions with 1,3 dithiolate complexes form the organic 7-membered rings. To our knowledge the formation of cyclic bis-thioethers by the reactions of an alkene or alkyne with a discrete dithiolate metal complex has not been reported previously. Conclusions. A series of new rhenium complexes with sulfido, disulfido, and thiolate ligands have been synthesized and characterized. The complexes have shown novel patterns of reactivity at the sulfur ligands that include hydrogen activation and addition, dehydrogenations, and carbon -sulfur bond formation. Systematic studies of sulfur ligand reactivity as the coligands in these rhenium complexes were varied have established electronic features that favor the novel ligand based reactivity. This series of complexes provides a model system for aspects of rhenium-sulfide surface reactivity, and have led to the suggestion of new mechanistic possibilities.
Author :Melinda Jane Burn Publisher :Ann Arbor, Mich. : University Microfilms International ISBN 13 : Total Pages :424 pages Book Rating :4.:/5 (33 download)
Book Synopsis Synthesis and Reactivity of Ruthenium Phosphine Complexes Containing Metal-carbon and Metal-heteroatom Bonds by : Melinda Jane Burn
Download or read book Synthesis and Reactivity of Ruthenium Phosphine Complexes Containing Metal-carbon and Metal-heteroatom Bonds written by Melinda Jane Burn and published by Ann Arbor, Mich. : University Microfilms International. This book was released on 1993 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Piet W.N.M. van Leeuwen Publisher :Springer Science & Business Media ISBN 13 :0306469472 Total Pages :291 pages Book Rating :4.3/5 (64 download)
Book Synopsis Rhodium Catalyzed Hydroformylation by : Piet W.N.M. van Leeuwen
Download or read book Rhodium Catalyzed Hydroformylation written by Piet W.N.M. van Leeuwen and published by Springer Science & Business Media. This book was released on 2006-04-11 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last decade there have been numerous advances in the area of rhodium-catalyzed hydroformylation, such as highly selective catalysts of industrial importance, new insights into mechanisms of the reaction, very selective asymmetric catalysts, in situ characterization and application to organic synthesis. The views on hydroformylation which still prevail in the current textbooks have become obsolete in several respects. Therefore, it was felt timely to collect these advances in a book. The book contains a series of chapters discussing several rhodium systems arranged according to ligand type, including asymmetric ligands, a chapter on applications in organic chemistry, a chapter on modern processes and separations, and a chapter on catalyst preparation and laboratory techniques. This book concentrates on highlights, rather than a concise review mentioning all articles in just one line. The book aims at an audience of advanced students, experts in the field, and scientists from related fields. The didactic approach also makes it useful as a guide for an advanced course.
Book Synopsis Synthesis and Characterization of Some Rhodium and Iridium Alkyl Complexes by : Matthew Albert Kulzick
Download or read book Synthesis and Characterization of Some Rhodium and Iridium Alkyl Complexes written by Matthew Albert Kulzick and published by . This book was released on 1984 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis, Characterization and Catalytic Performance of Rhodium and Iridium Complexes Supported in Dealuminated HY Zeolite by : Claudia Martinez Macias
Download or read book Synthesis, Characterization and Catalytic Performance of Rhodium and Iridium Complexes Supported in Dealuminated HY Zeolite written by Claudia Martinez Macias and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Essentially molecular supported catalysts were synthesized by using organometallic complexes as precursors, such as Rh(CO)2(acac), Rh(C2H4)2(acac), Ir(CO)2(acac), and Ir(C2H4)2(acac) (where acac is acetylacetonate) and HY zeolite as a support. A goal was to obtain highly uniform solid catalysts with well-defined structures. Characterization by X-ray absorption (XAS) and infrared (IR) spectroscopies confirmed the anchoring of the metal to the support with a high degree of uniformity. IR and 29Si and 27Al nuclear magnetic resonance (NMR) spectra characterize the presence of amorphous regions in the zeolite, and scanning transmission electron microscopy (STEM) identifies these amorphous regions, where iridium is more susceptible to aggregation than in the crystalline regions. Treatment of Ir(CO)2/HY zeolite with C2H4 and H2 at room temperature led to a family of species which includes Ir(CO)2, Ir(CO)(C2H4), Ir(CO)(C2H4)2, Ir(CO)(C2H5) and, tentatively, Ir(CO)(H). The identification of the species is based on XAS and IR spectra (including spectra of samples made with isotopically labeled ligands, 13CO and D2O) and density functional theory (DFT) calculations. The catalytic performance of isostructural rhodium and iridium species incorporating CO as a ligand was measured for the ethylene conversion; the CO not only acts as an inhibitor but it also as a probe molecule providing information about the electronic properties of the metal and of the species present during reaction. When isostructural rhodium and iridium diethylene species are bonded near each other on HY zeolite, the iridium complexes alter the selectivity of rhodium by spilling over hydrogen that hinders the interaction between ethylene and the acidic sites of the zeolite that act in concert with the rhodium, causing it to favor ethylene hydrogenation over dimerization. All these results show how structurally simple solid catalysts can be used to facilitate fundamental understanding of catalysts and their performance.
Book Synopsis Synthesis and Reactivity of Iridium, Rhodium and Ruthenium Alkyl Complexes Containing 2,2'-bipyridine by : Ka Wang Chan
Download or read book Synthesis and Reactivity of Iridium, Rhodium and Ruthenium Alkyl Complexes Containing 2,2'-bipyridine written by Ka Wang Chan and published by . This book was released on 2008 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Reactions of Cyclooctadiene and Phosphine Complexes of Rhodium by : Robert Thomas Price
Download or read book Synthesis and Reactions of Cyclooctadiene and Phosphine Complexes of Rhodium written by Robert Thomas Price and published by . This book was released on 1986 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: