Download or read book Synthesis Characterization and Aquation Reactions of Cobalt III Complexes Containing Monodentate Ligands written by Noel John Farrier and published by . This book was released on 1969 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reactions of Coordinated Aminoacetato Ligands on Cobalt III written by Deborah Marina Tonei and published by . This book was released on 1998 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis Characterization and Catalytic and Biological Activities of a Mixed ligand Cobalt ii Bipyridyl diphenylazodioxide Complex written by Kylin Alice Emhoff and published by . This book was released on 2021 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transition metal complexes have immense importance in the pharmaceutical industry. These types of complexes can be useful catalysts in the synthesis of medicinal compounds and can act as anticancer drugs. In these pharmaceutical applications, 1st-row transition metal-containing complexes offer certain advantages compared to their 2nd and 3rd-row transition metal counterparts. Our motivation was to investigate pharmaceutical applications of transition metal complexes containing both a 1st-row transition metal and unusual ligands to expand the knowledge of a class of complexes that could potentially be beneficial in the pharmaceutical industry. A class of rare ligands that piqued our interest was that of the diaryl azodioxides, cis-Ar(O)NN(O)Ar, which belong to the wider class of organic derivatives of nitric oxide (NO). Our synthesis and pharmaceutical applications of the azodioxide complex salt [Co(bpy){Ph(O)NN(O)Ph}2](PF6)2 have been able to significantly expand the knowledge of azodioxide complexes by displaying an unusual trigonal prismatic coordination geometry for cobalt(II) with only bidentate ligands, showing evidence of ligand-based redox activity, acting as an active catalyst in allylic amination/C0́2C double-bond transposition reactions, and selectively inducing apoptosis in SK-HEP-1 human liver adenocarcinoma cells. Importantly, catalytic and biological studies of [Co(bpy){Ph(O)NN(O)Ph}2](PF6)2 are ongoing, and focused on its potential for use in the pharmaceutical industry as a drug or catalyst for drug synthesis. Future work will involve comparing the catalytic and biological activities of [Co(bpy){Ph(O)NN(O)Ph}2](PF6)2 with other azodioxide complexes prepared by our group to identify structure-activity relationships and inform the design of more efficient catalysts and anti-cancer, pro-apoptotic agents.
Download or read book The Synthesis Stereochemistry and Reactions of Cobalt iii Complexes With Amino Alcohol Ligands written by and published by . This book was released on 1974 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Study of Coordination Compounds of Cobalt Copper Palladium and Nickel with Polydentate Ligands Containing Sulfur written by Tatiana Straistari and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work focuses on the synthesis, the characterization and the catalytic evaluation in the reduction of protons into dihydrogen, of new complexes of Ni(II), Co(III), Cu(II) and Pd(II) based ligands Type thiosemicarbazone. The catalytically active species during the process of the proton reduction was studied by cyclic voltammetry and mechanisms were formulated on the basis quantum chemical calculation.The first chapter introduces the scientific context, the goals and the main objectives of this work. The second chapter concerns the synthesis and the characterization of the N2S2 ligands and their associated mononuclear complexes, Ni, Cu and Pd. The third chapter presents the synthesis and the characterization of binuclear Co and trinuclear Ni based on N2S2 ligand.Electrochemical studies of these complexes in DMF in the presence of a proton source (trifluoroacetic acid), allowed us to evaluate their catalytic efficiency. Our results show that Cu and Pd complexes have a specific irreversible wave for the reduction of protons, but decomposition is observed during electrolysis, which makes these uninteresting complexes for the reduction of protons.On the contrary, Ni and Co complexes showed an electrochemical stability and good catalytic performances. In particular, the new mononuclear Ni complex exhibits remarkable catalytic properties that rank it among the best catalysts for the reduction of protons reported in the literature. All this work provided a complete description of the electrochemical behavior of N2S2 thiosemicarbazone ligands complexed to transition metals. It allows considering future developments in improving the catalytic properties of these complexes.
Download or read book Synthesis and Reactions of Alkyl Cobalt Complexes Containing a Quadridentate Nitrogen Donating Ligand written by and published by . This book was released on 1974 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Characterization of the Linkage Isomers and Stabilities of Bis dimethlglyoximato cobalt III Complexes Containing Bridging Chalcogenocyanate Ligands written by James Michael Ciskowski and published by . This book was released on 1977 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis Characterization and Properties of Dirhodium II Carboxylate and Polynuclear Cobalt III and Cobalt III IV Compounds with Oxygen and Nitrogen Containing Ligands written by Angelica Damaris Brown and published by . This book was released on 1999 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stitching Up the Ligands on Cobalt III written by Deborah Marina Tonei and published by . This book was released on 1993 with total page 292 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 Preparation Characterization and Kinetic Studies on Cobalt III Complexes with a Sulfur Containing Flexible Linear Pentadentate Ligand written by Thomas Andrew Jackman and published by . This book was released on 1976 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts written by and published by . This book was released on 1970 with total page 1188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Characterization of Paramagnetic Cobalt III Complexes written by and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comprehensive Dissertation Index 1861 1972 Chemistry written by Xerox University Microfilms and published by . This book was released on 1973 with total page 968 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comprehensive Dissertation Index written by and published by . This book was released on 1973 with total page 978 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cobalt III Complexes Containing Macrocyclic Ligands written by John Alexander Kernohan and published by . This book was released on 1969 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modern Syntheses of Cobalt III Complexes written by M. Yamatera H. Shibata and published by . This book was released on 2014-01-15 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
