Download or read book Synthesis and Crystal Structure of a Polymeric Cobalt II Complex with 1 1 1 4 Butanediyl Bis Imidazole Jordan Journal of Chemistry 2012 Vol 7 No 2 written by Yong-Hong Zhou and published by . This book was released on 2012 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Polymer or Macrocycle Cobalt Complexes of Ditopic 2 2 6 2 Terpyridine Ligands with Flexible Spacers written by Emily Kate Harris and published by Cuvillier Verlag. This book was released on 2010-07-28 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: The reaction of transition metal ions with ditopic ligands containing two 2,2':6',2"-terpyridine units linked by flexible spacers can give metallosupramolecular polymers, discrete metallomacrocycles or mixtures of the two. The outcome of the coordination depends on the precise reaction conditions as well as the nature of the spacer and the transition metal salt. This thesis is concerned with the reaction between cobalt(II) salts and bis(2,2':6',2"-terpyridine) ligands in which the metal-binding domains are linked by flexible oligo(ethylene glycol) spacers. An initial study of the ligands and several model mononuclear bis(2,2':6',2"-terpyridine)cobalt(II) and (III) complexes gave some insight into the solid state and solution properties of these systems, and PGSE NMR spectroscopy was found to be a useful tool for determination of the size of both the ligands and the cobalt(III) complexes in solution. The reaction of the ditopic ligands with cobalt(II) acetate tetrahydrate in pure alcohol was found to cause the decomposition of the ligand and the formation of a mononuclear bis(4'-alkoxy-2,2':6',2"-terpyridine)cobalt(II) complex. This reaction was extended to monotopic 4'-substituted-2,2':6',2"-terpyridines and can be considered as a reaction giving rise to polymer end-capping units, thus influencing the final outcome of the coordination. The effect of the anion on the coordination was considered further, and the speciation of mono- and bis(2,2':6',2"-terpyridine)cobalt(II) complexes in solution was investigated using the 4'-methoxy-2,2':6',2"-terpyridine ligand. The product mixtures were found to depend heavily on the anion, solvent and initial ratio of ligand to metal salt. Similar behaviour was observed for a model ditopic ligand. The presence of the mono(2,2':6',2"-terpyridine)cobalt(II) complexes within a system containing the ditopic ligands would also provide polymer end-capping units, influencing the speciation of these mixtures. Finally, a detailed study of the product mixtures obtained from the reactions of the ditopic ligands with cobalt(II) salts revealed a complex dependence of the speciation of many bis(2,2':6',2"-terpyridine)cobalt(II) complexes on the ligand, anion, solvent, concentration and other seemingly minor reaction parameters. Using the PGSE NMR spectroscopic technique, the sizes of some of the metallomacrocyclic species present in the equilibrium mixtures could be determined. These measurements were in excellent agreement with X-ray crystallographic data. Analysis of initial product mixtures using the same technique suggested that the initial kinetic products of the complexation are significantly larger species.
Download or read book Synthesis and Characterization of Cobalt II Compounds with 1 4 7 10 tetrabenzyl 1 4 7 10 tetraazacyclododecane written by Catherine M. Sarther and published by . This book was released on 1973 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aromatic C nitroso Compounds written by Hrvoj Vančik and published by Springer Science & Business Media. This book was released on 2013-03-12 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is designed to collect and review the research covering main directions in investigations of aromatic nitroso compounds in last decades, and to present both, the academic aspects of this chemistry, as well as the open field of its applicability. The book is divided in five chapters. The basic structural properties of the nitroso aromatic molecules are described in the first chapter. The second chapter is an overview of the methods of preparations of aromatic nitroso and polynitroso compounds, including classical synthetic methods and some new preparative approaches. The third part deals with the physico-chemical properties of nitroso aromates and azodioxides, its structure, crystallography, quantum chemical calculations, spectroscopy, typical reactions, and especially it is focused on the dimerizations in the solid-state. In the fourth chapter is represented organometallic chemistry of nitroso aromatic molecules and its applications in catalysis. The last part of the book deals with the behavior of this class of compounds in the biological systems, reactions with biomolecules and the use in toxicology.
Download or read book Synthesis Crystal Structure and Magnetic Property of a Cobalt II Complex Constructed from Symmetrical 2 fluoroisonicotinate written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Inorganic Syntheses Volume 23 written by and published by John Wiley & Sons. This book was released on 2009-09-22 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: The volumes in this continuing series provide a compilation of current techniques and ideas in inorganic synthetic chemistry. Includes inorganic polymer syntheses and preparation of important inorganic solids, syntheses used in the development of pharmacologically active inorganic compounds, small-molecule coordination complexes, and related compounds. Also contains valuable information on transition organometallic compounds including species with metal-metal cluster molecules. All syntheses presented here have been tested.
Download or read book Cobalt II Catalyzed Asymmetric Hydrovinylation of Alkyl and Trialkylsilyloxy 1 3 dienes written by Jordan P. Page and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Cobalt catalysis has become an interest for organometallic and organic chemists over the past forty years as an alternative to more expensive, more toxic, or more unstable known catalysts. The reactions catalyzed by cobalt-complexes range from Diels-Alder and other cyclizations to cross coupling and hydrocyanation. Recently, cobalt has proven to be a capable catalyst to affect the heterodimerization reactions of alpha-olefins with aryl alkenes and 1,3-dienes. The hydrovinylation reaction, the formal addition of a hydrogen atom and an alkene across a pi-system, is an atom economical reaction that allows for the synthesis of value-added products from simple commodity chemicals and feedstock gases. The true power of this methodology can be seen in the asymmetric hydrovinylation, where a chiral cobalt catalyst combined with 1,3-dienes and ethylene allow for 1,4-hydrovinylation to install a new vinyl group in near perfect stereo- and regioselectivity. The work presented herein expands established methodology that introduced 1,4-hydrovinylation of simple linear 1,3-dienes using cobalt (II) (bis-phosphine) dichloride and an organoaluminum co-catalyst to include the 1-vinylcycloalkene and 2-silyloxy-1,3-diene classes of compounds. Also presented in this thesis is the asymmetric hydrovinylation of the 1-vinylcycloalkenes and 2-trialkylsilyloxy-1,3-dienes, and efforts towards the derivitization of the products of these reactions.
Download or read book Nanoparticles in Catalysis written by Karine Philippot and published by John Wiley & Sons. This book was released on 2021-06-28 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanoparticles in Catalysis Discover an essential overview of recent advances and trends in nanoparticle catalysis Catalysis in the presence of metal nanoparticles is an important and rapidly developing research field at the frontier of homogeneous and heterogeneous catalysis. In Nanoparticles in Catalysis, accomplished chemists and authors Karine Philippot and Alain Roucoux deliver a comprehensive guide to the key aspects of nanoparticle catalysis, ranging from synthesis, activation methodology, characterization, and theoretical modeling, to application in important catalytic reactions, like hydrogen production and biomass conversion. The book offers readers a review of modern and efficient tools for the synthesis of nanoparticles in solution or onto supports. It emphasizes the application of metal nanoparticles in important catalytic reactions and includes chapters on activation methodology and supported nanoclusters. Written by an international team of leading voices in the field, Nanoparticles in Catalysis is an indispensable resource for researchers and professionals in academia and industry alike. Readers will also benefit from the inclusion of: A thorough introduction to New Trends in the Design of Metal Nanoparticles and Derived Nanomaterials for Catalysis An exploration of Dynamic Catalysis and the Interface Between Molecular and Heterogeneous Catalysts A practical discussion of Metal Nanoparticles in Water: A Relevant Toolbox for Green Catalysis Organometallic Metal Nanoparticles for Catalysis A concise treatment of the opportunities and challenges of CO2 Hydrogenation to Oxygenated Chemicals Over Supported Nanoparticle Catalysts Perfect for catalytic, organic, inorganic, and physical chemists, Nanoparticles in Catalysis will also earn a place in the libraries of chemists working with organometallics and materials scientists seeking a one-stop resource with expert knowledge on the synthesis and characterization of nanoparticle catalysis.
Download or read book Materials Science of DNA written by Jung-II Jin and published by CRC Press. This book was released on 2016-04-19 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of materials science and technology has undergone revolutionary advances due to the development of novel analytical tools, functional materials, and multidisciplinary approaches to engineering. Additionally, theoretical predictions combined with increasingly improved models and computational capabilities are making impressive contribution
Download or read book New Trends in the Chemistry of Nitrogen Fixation written by J. Chatt and published by . This book was released on 1980 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Conducting Polymer Hybrids written by Vijay Kumar and published by Springer. This book was released on 2016-11-02 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive survey about conducting polymers and their hybrids with different materials. It highlights the topics pertinent to research and development in academia and in the industry. The book thus discusses the preparation and characterization of these materials, as well as materials properties and their processing. The current challenges in the field are addressed, and an outline on new and even futuristic approaches is given. “Conducting Polymer Hybrids” is concerned with a fascinating class of materials with the promise for wide-ranging applications, including energy generation and storage, supercapacitors, electronics, display technologies, sensing, environmental and biomedical applications. The book covers a large variety of systems: one-, two-, and three-dimenstional composites and hybrids, mixed at micro- and nanolevel.
Download or read book The Manipulation of Air Sensitive Compounds written by Duward F. Shriver and published by John Wiley & Sons. This book was released on 1986-11-05 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: Revised to reflect the continuing and growing importance of research and development within this field, The Manipulation of Air-Sensitive Compounds, 2nd Edition offers state-of-the-art methods used in handling air-sensitive compounds, including gases. Part One covers inert atmosphere techniques, while Part Two treats vacuum line techniques. Appendixes provide safety data, information on materials used to construct apparatus, and a table of vapor pressures of common volatile substances.
Download or read book Bio inspired Polymers written by Nico Bruns and published by Royal Society of Chemistry. This book was released on 2016-10-14 with total page 613 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many key aspects of life are based on naturally occurring polymers, such as polysaccharides, proteins and DNA. Unsurprisingly, their molecular functionalities, macromolecular structures and material properties are providing inspiration for designing new polymeric materials with specific functions, for example, responsive, adaptive and self-healing materials. Bio-inspired Polymers covers all aspects of the subject, ranging from the synthesis of novel polymers, to structure-property relationships, materials with advanced properties and applications of bio-inspired polymers in such diverse fields as drug delivery, tissue engineering, optical materials and lightweight structural materials. Written and edited by leading experts on the topic, the book provides a comprehensive review and essential graduate level text on bio-inspired polymers for biochemists, materials scientists and chemists working in both industry and academia.
Download or read book The Chemistry of Organotin Compounds written by R. C. Poller and published by . This book was released on 1970 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Polyelectrolytes written by Visakh P. M. and published by Springer. This book was released on 2014-09-03 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a valuable reference source to graduate and post graduate students, engineering students, research scholars polymer engineers from industry. The book provides the reader with current developments of theoretical models describing the thermodynamics polyelectrolytes as well as experimental findings. A particular emphasis is put on the rheological description of polyelectrolyte solutions and hydrogels.
Download or read book Ruthenium Chemistry written by Ajay Kumar Mishra and published by CRC Press. This book was released on 2018-01-17 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book will describe Ruthenium complexes as chemotherapeutic agent specifically at tumor site. It has been the most challenging task in the area of cancer therapy. Nanoparticles are now emerging as the most effective alternative to traditional chemotherapeutic approach. Nanoparticles have been shown to be useful in this respect. However, in view of organ system complicacies, instead of using nanoparticles as a delivery tool, it will be more appropriate to synthesize a drug of nanoparticle size that can use blood transport mechanism to reach the tumor site and regress cancer. Due to less toxicity and effective bio-distribution, ruthenium (Ru) complexes are of much current interest. Additionally, lumiscent Ru-complexes can be synthesized in nanoparticle size and can be directly traced at tissue level. The book will contain the synthesis, characterization, and applications of various Ruthenium complexes as chemotherapeutic agents. The book will also cover the introduction to chemotherapy, classification of Ru- complexes with respect to their oxidation states and geometry, Ruthenium complexes of nano size: shape and binding- selectivity, binding of ruthenium complexes with DNA, DNA cleavage studies and cytotoxicity. The present book will be more beneficial to researchers, scientists and biomedical. Current book will empower specially to younger generation to create a new world of ruthenium chemistry in material science as well as in medicines. This book will be also beneficial to national/international research laboratories, and academia with interest in the area of coordination chemistry more especially to the Ruthenium compounds and its applications.
Download or read book Preparative Inorganic Reactions written by W. L. Jolly and published by Wiley. This book was released on 1968-01-15 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt:
