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Synthesis And Reactivity Of Transition Metal Complexes Containing Ligands With Hydrogen Bonding Moieties
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Book Synopsis Synthesis and Reactivity of Transition Metal Complexes Containing Ligands with Hydrogen-bonding Moieties by : Hayley Ann Burkill
Download or read book Synthesis and Reactivity of Transition Metal Complexes Containing Ligands with Hydrogen-bonding Moieties written by Hayley Ann Burkill and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Reactivity of Transition Metal Complexes Containing Hydrogen-bonding Moieties by :
Download or read book Synthesis and Reactivity of Transition Metal Complexes Containing Hydrogen-bonding Moieties written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis, Characterization, and Reactivity of Transition Metal Complexes Containing Multi-donor Ligands by : John C. Linehan
Download or read book Synthesis, Characterization, and Reactivity of Transition Metal Complexes Containing Multi-donor Ligands written by John C. Linehan and published by . This book was released on 1986 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis, Structure and Reactivity of Transition Metal Complexes Containing P-, O- and N-donor Ligands by :
Download or read book Synthesis, Structure and Reactivity of Transition Metal Complexes Containing P-, O- and N-donor Ligands written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Reactivity of Transition Metal Complexes Using Ligands Capable of Variable Electron Donation by : Gregory A. Marinelli
Download or read book Synthesis and Reactivity of Transition Metal Complexes Using Ligands Capable of Variable Electron Donation written by Gregory A. Marinelli and published by . This book was released on 1992 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Reactivity of Late Transition Metal Complexes Featuring a Bis(8-quinolyl)methylsilyl Ligand by : Preeyanuch Sangtrirutnugul
Download or read book Synthesis and Reactivity of Late Transition Metal Complexes Featuring a Bis(8-quinolyl)methylsilyl Ligand written by Preeyanuch Sangtrirutnugul and published by . This book was released on 2007 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Organometallic Chemistry by : Ian J S Fairlamb
Download or read book Organometallic Chemistry written by Ian J S Fairlamb and published by Royal Society of Chemistry. This book was released on 2014-06-30 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: A series of critical reviews and perspectives focussing on specific aspects of organometallic chemistry interfacing with other fields of study are provided. For this volume, the critical reviews cover topics such as the activation of "inert" carbon-hydrogen bonds, ligand design and organometallic radical species. For example, Charlie O'Hara discusses how mixed-metal compounds may perform the highly selective activation of C-H bonds and, in particular, how synergic relationships between various metals are crucial to this approach. The chemistry of a remarkable series of air-stable chiral primary phosphine ligands is discussed in some depth by Rachel Hiney, Arne Ficks, Helge M3ller-Bunz, Declan Gilheany and Lee Higham. This article focuses on the preparation of these ligands and also how they may be applied in various catalytic applications. Bas De Bruin reports on how ligand radical reactivity can be employed in synthetic organometallic chemistry and catalysis to achieve selectivity in radical-type transformations. As well as highlighting ligand-centered radical transformations in open-shell transition metals, an overview of the catalytic mechanism of Co(II)-catalysed olefin cyclopropanation is given, showing that enzyme-like cooperative metal-ligand-radical reactivity is no longer limited to real enzymes. Valuable and informative comprehensive reviews in the field of organometallic chemistry are also covered in this volume. For example, organolithium and organocuprate chemistry are reviewed by Joanna Haywood and Andrew Wheatley; aspects in Group 2 (Be-Ba) and Group 12 (Zn-Hg) compounds by Robert Less, Rebecca Melen and Dominic Wright; metal clusters by Mark Humphrey and Marie Cifuentes; and recent developments in the chemistry of the elements of Group 14 - focusing on low-coordination number compounds by Richard Layfield. This volume therefore covers many synthetic and applied aspects of modern organometallic chemistry which ought to be of interest to inorganic, organic and applied catalysis fields.
Book Synopsis Synthesis and Reactions of Dinuclear Transition Metal Complexes Containing Bridging Ligands Relevant to Heterogeneous Catalysis by : Eric Niels Jacobsen
Download or read book Synthesis and Reactions of Dinuclear Transition Metal Complexes Containing Bridging Ligands Relevant to Heterogeneous Catalysis written by Eric Niels Jacobsen and published by . This book was released on 1986 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Reactivity of Early Transition Metal Complexes Containing Multiple Metal to Carbon, Nitrogen, Or Oxygen Bonds by : Scott M. Rocklage
Download or read book Synthesis and Reactivity of Early Transition Metal Complexes Containing Multiple Metal to Carbon, Nitrogen, Or Oxygen Bonds written by Scott M. Rocklage and published by . This book was released on 1982 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Metal-Ligand Multiple Bonds by : William A. Nugent
Download or read book Metal-Ligand Multiple Bonds written by William A. Nugent and published by Wiley-Interscience. This book was released on 1988-11-14 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: The only comprehensive one-volume text/reference on metal-ligand multiple bonds. Stresses the unified nature of the field and includes handy new tabulations of data. The flow within each subtopic is oxygen to nitrogen to carbon. Coverage is up-to-date--virtually every subtopic leads to interesting questions for future research. Presents information otherwise scattered through hundreds of publications.
Book Synopsis Investigating the Effects of Non-covalent Interactions in Metal Complexes with Versatile Ligand Scaffolds by : Nathaniel Solomon Sickerman
Download or read book Investigating the Effects of Non-covalent Interactions in Metal Complexes with Versatile Ligand Scaffolds written by Nathaniel Solomon Sickerman and published by . This book was released on 2014 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Nature, transition metal-containing enzymes have evolved to catalyze a wide variety of chemical reactions with astounding efficiencies and selectivities through precise control of their primary and secondary coordination environments. Taking inspiration from the active sites of metalloenzymes, synthetic bioinorganic chemists have endeavored to construct metal complexes that model the structures and functions of these enzymes. Controlling the primary coordination spheres of metal ions to model active sites is accomplished through the construction of metal-binding organic ligand frameworks, but the resulting metal complexes often lack the activities observed in their biological counterparts. Non-covalent secondary coordination sphere effects that are present within metalloenzyme active sites are integral to the proper function of these proteins and have been more challenging to emulate within synthetic systems. Manipulation of the secondary coordination environment surrounding synthetic metal complexes can be accomplished by using rigid ligand scaffolds containing groups that promote non-covalent interactions proximal to the metal center. The Borovik group has developed a number of tetradentate ligands that can bind metal ions and establish a pocket where external ligands can bind to the metal center. The ligands contain moieties that interact with the metal-bound exogenous ligands through non-covalent effects, particularly hydrogen bonds (H-bonds). This dissertation chronicles the advances made with two tripodal ligand platforms that promote intramolecular H-bonding networks within the resulting complexes. The first ligand studied, TAO, tautomerizes upon metal ion binding to provide a neutral N4 primary coordination environment to the metal center. This tautomerization event places H-bond donating groups proximal to external ligands that can bind to the metal center, producing intramolecular H-bonding networks. TAO complexes are sufficiently flexible to accommodate ligands of varying sizes, shapes, and charges. The versatility of the TAO framework is exemplified through a series of metal complexes which have been characterized in both the solution and solid state. Ab initio theoretical calculations performed on many of these complexes provide insight into the electronic effects of the H-bonding interactions. The ligand [MST]3 binds metal ions in a similar manner to TAO, but possesses sulfonamido groups that render the complex cavity capable of both accepting H-bonds and binding secondary metal ions. The bifunctionality of [MST]3 has been explored through the synthesis of heterobimetallic complexes wherein the metal ions are bridged by a hydroxido group. The work on [MST]3 in this dissertation focuses on diamagnetic main group analogs of these complexes whose structures could be elucidated in both the solution and solid states. The structurally characterized complexes were found to retain their supramolecular structures in solution. The relevance of some of these complexes to the oxygen evolving complex within Photosystem II is also discussed. Additionally, M-NH3 (M = Fe11, Fe111, Ga111) complexes are presented that contain intramolecular H-bonding networks and which remain assembled in both solution and the solid state. A putative Fe111-NH2 species and its reactivity is discussed, and the synthesis and structure of a Ga111-N2H4 complex is documented. A new N4 donor ligand platform, [POAT]3− is presented in the final portion of this dissertation. In complexes with this ligand, phosphine oxide groups are positioned within the secondary coordination sphere of the metal center to act as H-bond acceptors and to bind additional metal ions. While these features are akin to those in the [MST]3 system, preliminary studies indicate that the primary coordination sphere is much more reducing; as such, complexes with [POAT]3− are anticipated to stabilize metal complexes in higher oxidation states.
Book Synopsis Synthesis and Reactivity Studies of Mono-, Bi-, and Trimetallic Complexes Supported by Oxidatively-resistant Polyanionic Ligands by : Julia Megan Stauber
Download or read book Synthesis and Reactivity Studies of Mono-, Bi-, and Trimetallic Complexes Supported by Oxidatively-resistant Polyanionic Ligands written by Julia Megan Stauber and published by . This book was released on 2017 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Investigations of the oxidatively-resistant hexacarboxamide cryptand, mBDCA-5t-H6, to support mono-, bi-, and trimetallic complexes are presented. Selective single metal ion insertion into the cryptand was achieved to generate the mono-Co(II) and Zn(II) complexes that contain proximal hydrogen-bonding networks enforced by the carboxamide N–H groups of the pre-organized second-coordination sphere. The cobalt(II) complex serves as a selective colorimetric turn-on fluoride sensor and represents a unique example of a transition-metal based fluoride sensor where fluoride binding takes place directly at the transition metal. The binding of fluoride is synergistic involving hydrogen-bond donors from the second-coordination sphere together with metal(II) ion coordination. Isolation of the mono-metallic Co and Zn complexes allowed for the preparation of their transition and main group metal heterobimetallic variants. Hetero- and homobimetallic complexes of cobalt(II) and zinc(II) are presented, and the reactivity of the homobimetallic complexes with O2, O−2 , and H2O2 is discussed. The cryptand was also explored as a supporting ligand for cofacially arranged divalent group 14 ions (Ge, Sn, Pb). Reaction of the di-tin(II) complex with elemental sulfur or selenium generates di-tin polychalcogenide complexes containing [mu]–E and bridging [mu]– E5 ligands (E = Se, S), where the sulfur-containing product acts reversibly as a source of S3 ∙− in DMF solution. The di-tin(II) complex also serves as a bidentate ligand for the preparation of trimetallic Sn2/M complexes (M = Ag(I), Au(I), Pd(0)). Reactivity studies of the Sn2/Pd(0) complex with substrates including CS2, S8, and 1AdC≡P are described. Terminal titanyl complexes supported by oxidatively-resistant tri- and tetrametaphosphates were prepared as molecular models of heterogeneous oxidation catalysts. These complexes react with hydrogen peroxide to produce the corresponding peroxotitanium( IV) metaphosphates, and represent rare examples of titanium oxo and peroxo systems supported by an all-oxygen ligand environment.
Book Synopsis The Synthesis and Reactivity of Transition Metal Complexes Containing Naked Group 15 Ligands by : Peter Kenneth Tompkin
Download or read book The Synthesis and Reactivity of Transition Metal Complexes Containing Naked Group 15 Ligands written by Peter Kenneth Tompkin and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Reactivity of Transition Metal Complexes Bearing the Tridentate Bis(2-mercapto-p-tolyl)amine ([SNS]H 3) Ligand by : Kyle Evan Rosenkoetter
Download or read book Synthesis and Reactivity of Transition Metal Complexes Bearing the Tridentate Bis(2-mercapto-p-tolyl)amine ([SNS]H 3) Ligand written by Kyle Evan Rosenkoetter and published by . This book was released on 2017 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: The work described herein focuses on the synthesis and characterization of new heterobimetallic complexes containing the redox-active W[SNS] 2 metalloligand and investigation into their electronic properties and reactivity. Most recent studies have explored the redox nature of the [SNS]H 3 scaffold through the synthesis and reactivity of a novel set of square-planar nickel complexes.Chapters 2 and 3 describe a modular synthetic approach towards generating a new series of heterobimetallic complexes with the general formula W[SNS]2M(L) ([SNS] = bis(2-mercapto- p-tolyl)amine; M = Ni, Pd, or Pt; and L = dppe, depe, dmpe, dppp, PR'2NRPR'2 (R = phenyl, benzyl; R'=phenyl), DPEphos or dppf). The complexes were prepared by a salt metathesis of Cl2MII(L) with the previously reported W[SNS]2 coordination complex under reducing conditions. X-ray diffraction analysis revealed interesting coordination geometries about the appended Group 10 metal centers moving from Pt and Pd (pseudo-square planar) to the first row Ni (pseudo-tetrahedral) analogue. These complexes demonstrate formal metal--metal bond formation across the series with a tunable first oxidation potential up to 600 mV.Chapter 4 investigates the use of W[SNS]2Ni(dppe) as a catalyst for the electrochemical reduction of protons to hydrogen. This complex was found to catalytically generate hydrogen with an overpotential of 700 mV, a TOF of 14 sec--1, and a Faradaic yield of 80 +/- 3 % using 4-cyanoanilinium tetrafluoroborate in non-aqueous solutions.Chapter 5 demonstrates the effect of exchanging the nickel center of the heterobimetallic complexes discussed in Chapters 2 and 3 with other first row transitions metal ions (i.e. cobalt and copper). Analysis into the observed metal--metal distances reveal stark differences across the series. Additionally, the copper ion containing complexes demonstrate dynamic behavior in solution.Chapter 6 investigates the synthesis and reactivity of a series of monomeric square-planar nickel complexes of the [SNS] scaffold to demonstrate the ligand as redox, proton, and hydrogen atom non-innocent.Appendix A illustrates the electrochemical responses observed for the monoanionic complexes from Chapter 6 in the presence of CO2 and CO. Appendices B and C describe the synthesis and characterization of a five-coordinate cobalt and a heterotrimetallic tungsten-nickel complex, respectively.
Book Synopsis Synthesis and Reactivity of PtII Complexes with Secondary Sphere N-H Moieties by : Braden A. Zahora
Download or read book Synthesis and Reactivity of PtII Complexes with Secondary Sphere N-H Moieties written by Braden A. Zahora and published by . This book was released on 2019 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: Direct transformations of abundant hydrocarbons into higher valued products would circumvent energy intensive processes, reforming the chemical industry. Late transition metals, particularly platinum, are known to selectively convert alkanes into functionalized products. However, a practical method with an economically viable oxidant has yet to be discovered. New methods for alkane activation may yield further advances towards this goal. This dissertation focuses on how platinum methyl complexes with ligand-based protons can form methane, the microscopic reverse of methane activation. Chapter 1 provides an introduction on the need to develop new methods to functionalize hydrocarbons. Furthermore, a survey of the literature with respect to how late metal complexes can undergo productive reactivity with substrates which are deemed necessary for practical alkane partial oxidation is presented. Chapter 2 focuses on the synthesis and reactivity of 5-(6-methyl-2-pyridyl)-3-tert-butylpyrazolate (NN[superscript]Me) and 2-(5-tert-butylpyrazol-3-yl)-6 (diethylaminomethyl)pyridine (NNN[superscript]Et) ligated Pt[superscript]II complexes. Once formed, conditions necessary for methane formation were found and it was determined that the ligand-based N-H was not involved in methane formation. Chapter 3 explores synthesis and reactivity of 5-tert-butyl-1,3-bis(pyrazol-3-yl)pyridine (NNN) and 5-tert-butyl-1,3-bis(pyrazol-3-yl)benzene (NCN) ligated Pt[superscript]II-alkyl complexes with electrophilic reagents. It was found that tridentate ligated pyrazolate Pt[superscript]II-R systems can undergo protonation at the ligand if there is a weak pyridine trans donor (vs strong phenyl trans donor) to the Pt[superscript]II-R moiety. However, reactivity with methyl iodide occurred at the metal first, with further ligand methylation spectroscopically observed for the NNN ligated Pt-CH3 complex. Chapter 4 discusses the synthesis and characterization of bis(phosphino)amine ligated Pt[superscript]II complexes, which contained a ligand-based N-H. Taking advantage of unfavorable steric congestion of bulky Ph groups on the ligand, methane formation was observed from thermolysis reactions of a bis(phosphino)amine ligated Pt(CH3)2. Although additional characterization of the resulting metal-containing product is required, it appears that methane was formed through cooperation of the ligand-based N-H moiety and the Pt-CH3 ligand.
Book Synopsis Fundamental Transition Metal Organometallic Chemistry by : Charles M. Lukehart
Download or read book Fundamental Transition Metal Organometallic Chemistry written by Charles M. Lukehart and published by Thomson Brooks/Cole. This book was released on 1985 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Reactivity of Transition Metal Complexes Containing Pentamercurated Cyclopentadienyl Ligands by : Young Hee Han
Download or read book Synthesis and Reactivity of Transition Metal Complexes Containing Pentamercurated Cyclopentadienyl Ligands written by Young Hee Han and published by . This book was released on 1993 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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