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The Synthesis Characterization And Reactivity Of Heterobimetallic Gold Cluster Complexes Of Platinum And Palladium
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Book Synopsis The Synthesis, Characterization, and Reactivity of Heterobimetallic Gold Cluster Complexes of Platinum and Palladium by : Larry Noboru Ito
Download or read book The Synthesis, Characterization, and Reactivity of Heterobimetallic Gold Cluster Complexes of Platinum and Palladium written by Larry Noboru Ito and published by . This book was released on 1990 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Toward the Upgrading of Hydrocarbons by : Paul Frederick Oblad
Download or read book Toward the Upgrading of Hydrocarbons written by Paul Frederick Oblad and published by . This book was released on 2012 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigations of the Reactivity of Palladium and Platinum Complexes with Molecular Oxygen and Characterization of a Gold(III)-alkene Complex by : Margaret Louise Scheuermann
Download or read book Investigations of the Reactivity of Palladium and Platinum Complexes with Molecular Oxygen and Characterization of a Gold(III)-alkene Complex written by Margaret Louise Scheuermann and published by . This book was released on 2013 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the reactivity of metal complexes with molecular oxygen will facilitate the development of catalysts that can enable the widespread use of molecular oxygen as an oxidant for organic synthesis. This thesis presents two new classes of reactions between metal complexes and molecular oxygen. Neutral five-coordinate Pt complexes were tested for reactivity in the presence of molecular oxygen. In arene solution, the complexes (t̳B̳u̳̳M̳e̳2̳ nacnac)PtMe3 (1, t̳̳B̳u̳M̳e̳2̳ nacnac- = [((4-tBu-2,6-Me2C6H2)NC(CH3))2CH]-), (M̳e̳3̳ Me-nacnac)PtMe3 (2, M̳e̳3̳ Me-nacnac- = [((2,4,6-Me3C6H2)NC(CH3))2CCH3]-), and (t̳B̳u̳2̳ PyPyr)PtMe3 (3, t̳B̳u̳2̳ PyPyr- = 3,5-di-tert-butyl-2-(2-pyridyl)pyrrolide) reacted immediately with oxygen to form peroxo species in which two oxygen atoms bridge between the metal center and a carbon atom in the ligand backbone. In contrast, no reaction between ( i̳P̳r̳2̳ AnIm)PtMe3 (4a, i̳P̳r̳2̳ AnIm− = [o- C66H4-{N(C6H3 i Pr2)}(CH=NC6H3 i Pr2)]−) or (M̳e̳3̳ AnIm)PtMe3 (4b, M̳e̳̳3̳ AnIm− = [o-C6H4- {N(C6H2Me3)}(CH=NC6H2Me3)]−) and oxygen was observed. As activation of oxygen by five- coordinate PtIV species was found to involve cooperation between the metal center and the ligand, the ability of the ligand to participate in the oxygen binding appears to be a vital component. Oxygen atom transfer reactions of the novel peroxo species are also presented. In a separate study, an unusual reaction involving the activation of both molecular oxygen and a C-H bond at the same metal center was investigated. Pd(P(Ar)(tBu)2)2 (15, Ar = naphthyl) was found to react with molecular oxygen at room temperature in arene solvent to form a hydroxide dimer in which one equivalent of phosphine per Pd was lost and the remaining phosphine was cyclometalated through the naphthyl ring. At low temperature, two intermediates were observed. The nature of these intermediates suggests a mechanism involving initial reaction of Pd(P(Ar) (tBu)2)2 with O2 followed by the C-H activation step. In a final chapter unrelated to oxygen reactivity, the generation and characterization of a gold III̳-alkene complex by NMR and X-ray crystallography is presented. Such species have been proposed as intermediates in catalytic reactions but until recently none had been observed.
Book Synopsis Synthesis, Characterization, and Reactivity of Binuclear Platinum and Palladium Diphosphine Complexes by : Carrie L. Winker
Download or read book Synthesis, Characterization, and Reactivity of Binuclear Platinum and Palladium Diphosphine Complexes written by Carrie L. Winker and published by . This book was released on 2000 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Heterobimetallic Diphosphine Complexes of Nickel, Palladium, and Platinum: Syntheses, Characterization and Reactivity by : Michelle Marie Setzer
Download or read book Heterobimetallic Diphosphine Complexes of Nickel, Palladium, and Platinum: Syntheses, Characterization and Reactivity written by Michelle Marie Setzer and published by . This book was released on 1991 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis, Structural Characterization and Reactivity Study of Heteronuclear Cluster Complexes Containing Platinum by : Jau-Ching Lii
Download or read book Synthesis, Structural Characterization and Reactivity Study of Heteronuclear Cluster Complexes Containing Platinum written by Jau-Ching Lii and published by . This book was released on 1992 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis, Characterization and Redox Studies of Platinum and Palladium Complexes with Mer-coordinating Ligands by : Seher Kuyuldar Tastan
Download or read book Synthesis, Characterization and Redox Studies of Platinum and Palladium Complexes with Mer-coordinating Ligands written by Seher Kuyuldar Tastan and published by . This book was released on 2009 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Synthetic, structural, spectroscopic, and redox studies of platinum(II) and palladium(II) compounds with mer-coordinating ligands have been undertaken in an effort to better understand the role of the metal and the ligands in controlling d^6/d^8 electron-transfer reactions. A series of Pd(pip2NCN)X (pip2NCNH=1,3-bis(piperdylmethyl)benzene) and [Pd(pip2NNN)X]X (X=Cl, Br, I) (pip2NNN=2,6- bis(piperdyl-methyl)pyridine) complexes are reported. Electronic spectra are consistent with stabilization of ligand-to-metal-charge-transfer states as the ancillary ligand is varied along the ClBr
Book Synopsis D10 Palladium and Platinum Complexes with Alkene and Diimine Ligands by : Janet Lynne Whittemore
Download or read book D10 Palladium and Platinum Complexes with Alkene and Diimine Ligands written by Janet Lynne Whittemore and published by . This book was released on 1990 with total page 180 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 2000 with total page 816 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis, Characterization, and Reactivity of Palladium Amido and Nitrene Complexes by : Lawrence A. Jr Villanueva
Download or read book Synthesis, Characterization, and Reactivity of Palladium Amido and Nitrene Complexes written by Lawrence A. Jr Villanueva and published by . This book was released on 1993 with total page 550 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 Synthesis, Characterization, and Reactivity of New 16-electron Platinum(II) Propargyl Complexes by : David Glenn Schimpff
Download or read book Synthesis, Characterization, and Reactivity of New 16-electron Platinum(II) Propargyl Complexes written by David Glenn Schimpff and published by . This book was released on 1991 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Supported Gold Complexes and Clusters by : Juan Carlos Fierro-Gonzalez
Download or read book Supported Gold Complexes and Clusters written by Juan Carlos Fierro-Gonzalez and published by . This book was released on 2005 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Synthesis and Characterization of Large Metal Clusters Containing Gold And/or Palladium by : Lissa Taka Jennings Nelson
Download or read book The Synthesis and Characterization of Large Metal Clusters Containing Gold And/or Palladium written by Lissa Taka Jennings Nelson and published by . This book was released on 1992 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Supported Molecular Gold Complexes and Clusters by : Javier Guzman
Download or read book Supported Molecular Gold Complexes and Clusters written by Javier Guzman and published by . This book was released on 2003 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis, Characterization, and Reactivity of Mononuclear Palladium Complexes Bearing Nitrogen and Carbon-donor Ligands by : Nicholas Ruhs
Download or read book Synthesis, Characterization, and Reactivity of Mononuclear Palladium Complexes Bearing Nitrogen and Carbon-donor Ligands written by Nicholas Ruhs and published by . This book was released on 2017 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: The importance of Pd-catalyzed C--H functionalization reactions for chemical transformations has been widely studied over the last several decades. Much of the research to date has focused on conventional Pd0/II catalytic cycles. However, more recent studies have shown that many transformations can also follow a PdII/IV catalytic cycle. High-valent PdIII and PdIV species are often proposed to be important intermediates in such transformations. C--H coupling reactions involving high-valent intermediates often involve the oxidation of a PdII species to a PdIII or PdIV complex, which can then undergo subsequent C--heteroatom bond formation. However, the need for harsh oxidants and reaction conditions in many of these reactions hinders their practical applicability. The focus of this work is to study the properties and reactivity of PdII, PdIII, and PdIV complexes through modifications of the supporting macrocyclic ligands. Another goal of this work is to probe the ability of these complexes to facilitate C--H activation and C--heteroatom bond formation reactions using environmentally benign oxidants.Our lab reported the synthesis and characterization of the first organometallic mononuclear PdIII complexes stabilized by the tetradentate ligand N,N'-di-tert-butyl-2,11-diaza[3,3](2,6)pyridinophane (tBuN4). In order to further probe the Pd chemistry with this class of ligands, we prepared ligands with modifications to the steric bulk on the amine groups. In the first study detailed in chapter 2, the synthesis and characterization of PdII and PdIII complexes supported by N,N'-di-neo-pentyl-2,11-diaza[3,3](2,6)-pyridinophane(NpN4) and N,N'-di-benzyl-2,11-diaza[3,3](2,6)-pyridinophane(BzN4) is reported. Interestingly, the spectroscopic and crystallographic property of the newly synthesized complexes falls between the tBuN4 and MeN4 complexes. The C--C and C--heteroatom bond formation reactivity of the NpN4 and BzN4 supported complexes is also similar to our group's previously reported complexes.We also prepared and studied a series of Pd complexes bearing a modified tetradentate pyridinophane ligand, tBuN3CH. Essentially, we have replaced one of the nitrogen donor atoms from the N4 ligand with a carbon atom and have also introduced a new C--H bond. Due to its expected positioning near the metal center, this bond has the potential to undergo intramolecular C--H bond activation. In order to study the reactivity of this ligand, electronic modifications were made by substituting various electron-donating and withdrawing groups in the para position to this new C--H bond. In chapter 3, the synthesis and characterization of a series of PdII, PdIII, and PdIV complexes stabilized by the N3CH ligand is reported. Interestingly, a spectroscopic and crystallographic study of the pRN3CHPdII(OAc)2 complexes reveals that the Cipso--H bond remains unactivated at the PdII stage. However, upon oxidation to PdIII, the Cipso--H bond is activated.Interestingly, we discovered that the aerobic oxidation of the PdII complex [pRN3CHPdII(MeCN)](BF4) leads to the formation of the PdIII complex [pRN3CHPdIII(MeCN)](ClO4)2 at room temperature. Surprisingly, the C--H activation reaction proceeds in the presence of oxygen without the need for external base. Furthermore, the moderate rate of the reaction allowed us to investigate the mechanism of the reaction by utilizing kinetics and UV-Vis spectroscopy. Detailed mechanistic studies revealed that C--H activation of the Cipso--H bond is the rate determining step of the reaction.
Book Synopsis Synthesis, Characterization and Potential Chromatographic Separation of Palladium and Platinum Complexes of N,N-Dialkyl-N'-Benzoylthioureas by : 'M'Angaka Clara Matoetoe
Download or read book Synthesis, Characterization and Potential Chromatographic Separation of Palladium and Platinum Complexes of N,N-Dialkyl-N'-Benzoylthioureas written by 'M'Angaka Clara Matoetoe and published by . This book was released on 1990 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: