Download or read book Structural Investigations of Mono Di and Trinuclear Transition Metal Complexes Relevant to Metalloenzymes written by and published by . This book was released on 2007 with total page 235 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book SYNTHESES STRUCTURAL STUDIES written by 謝文忠 and published by Open Dissertation Press. This book was released on 2017-01-27 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Syntheses, Structural Studies and Photophysical Properties of Mono, Di and Polynuclear D10-metal Complexes With Bulky and Electron-rich Phosphine Ligands" by 謝文忠, Man-chung, Tse, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. DOI: 10.5353/th_b3124108 Subjects: Photochemistry Metal complexes Metal-metal bonds Ligands
Download or read book Structural Investigation of Transition Metal Complexes written by Ross Louis Eiss and published by . This book was released on 1967 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Syntheses Structural Studies and Photophysical Properties of Mono Di and Polynuclear D10 metal Complexes with Bulky and Electron rich Phosphine Ligands written by Man-chung Tse and published by . This book was released on 1999 with total page 862 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthetic Structural and Spectroscopic Studies on Monothio and Dithio acid Transition Metal Complexes written by J. A. Goodfellow and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structural Studies on Transition Metal Complexes Containing Phosphonates and Their Biological Relevance written by Jin-an Feng and published by . This book was released on 1990 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthetic Spectroscopic Magnetic and Structural Studies of a Series of Bi and Trinuclear Transition Metal Schiff Base Complexes written by Bahram Letafat and published by . This book was released on 1987 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electronic Structure and Reactivity of Transition Metal Complexes Incorporating Pro radical Bis phenoxide Ligands written by Ryan Michael Clarke and published by . This book was released on 2018 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transition metal complexes with pro-radical ligands have received considerable research attention due to their interesting electronic structures, photophysical properties, and applications in catalysis. The relative ordering of metal and ligand frontier orbitals in a complex incorporating pro-radical ligands dictates whether oxidation/reduction occurs at the metal centre or at the ligand. Many metalloenzymes couple redox events at multiple metal centres or between metals and pro-radical ligands to facilitate multielectron chemistry. Owing to the simplicity of the active sites, many structural and functional models have been studied. One class of pro-radical ligand that has been investigated extensively are bis-imine bis-phenoxide ligands (i.e. salen) due to their highly modular syntheses. In this thesis, projects related to the synthesis, electronic structure, and reactivity of mono and bimetallic complexes incorporating the salen framework are explored. Chapter 2 presents a systematic investigation of the effects of geometry on the electronic structure of four bis-oxidized bimetallic Ni salen species. The tunability of their intense intervalence charge transfer (IVCT) transitions in the near infrared (NIR) by nearly 400 nm due to exciton coupling in the excited states is described. For the first time, this study demonstrates the applicability of exciton coupling to ligand radical systems absorbing in the NIR region. Chapter 3 investigates the ground-state electronic structure of a bis-oxidized Co dimer. Enhanced metal participation to the singly occupied molecular orbitals results in both high spin Co(III) and Co(II)-L• character in the ground state, and no observable band splitting in the NIR due to exciton coupling. Finally, Chapter 4 describes a series of oxidized nitridomanganese(V) salen complexes with different para ring substituents (R = CF3, tBu, and NMe2), demonstrating that nitride activation is dictated by remote ligand electronics. Upon one-electron oxidation, electron deficient ligands afford a Mn(VI) species and nitride activation, whereas an electron-rich ligand results in ligand based oxidation and resistance to N coupling of the nitrides. This study highlights the alternative reactivity pathways that pro-radical ligands impose on metal complexes and represents a key step in the use of NH3 as a hydrogen storage medium. The results presented herein provide a starting point for further efforts in reactivity with the salen platform.
Download or read book Structural Studies on Some Catalytically Relevant Transition Metal Complexes written by Joseph Raymond Missert and published by . This book was released on 1983 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1988 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of the American Chemical Society written by American Chemical Society and published by . This book was released on 1974 with total page 1128 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the Society are included in v. 1-59, 1879-1937.
Download or read book Index to American Doctoral Dissertations written by and published by . This book was released on 1989 with total page 1252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in the Development of Artificial Metalloenzymes written by Tatjana N. Parac-Vogt and published by Frontiers Media SA. This book was released on 2019-11-05 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reactions catalyzed by metalloenzymes have great potential for applications in the biotechnology and pharmaceutical industries. While only a few of these enzymes have yet been used in such applications, in the last few decades numerous efficient, selective, environmentally friendly and economical synthetic analogues have been described, including supramolecular, polymeric, nanoparticulate and lowmolecular- weight organometallic complexes, and metal organic frameworks. In this Research Topic, we present a collection of original research and review articles that show significant recent advances made in the rational design of such artificial metalloenzymes.
Download or read book Physical Methods written by Colin F. Chignell and published by Springer. This book was released on 2013-01-21 with total page 499 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume, the second in the Methods in Pharmacology series, contains some of the physical methods which either have been or could be applied to pharmaco logical problems. A major emphasis has been placed on spectroscopic techniques, particularly those, such as optical rotatory dispersion and circular dichroism, fluorescence spectroscopy, magnetic resonance spectroscopy, ultraviolet absorption spectroscopy, stopped flow and relaxation spectrometry, Mossbauer spectroscopy, light scatter and x-ray crystallography, that can be used to study drug interactions with biological systems at a molecular level. Although phosphorescence spectro scopy and oscillographic polarography can also be used to study drug interactions, their main usefulness is in the detection and estimation of drugs and their meta bolities in body tissues and fluids. Mass spectrometry is a powerful tool for study ing the metabolism of drugs as well as for detecting abnormal endogenous metabolites in the body. Finally, heatburst microcalorimetry is a non spectroscopic technique that can be used to study how drugs and other ligands interact with biological macromolecules. Each chapter contains a brief introduction to the theoretical basis for each technique as well as a description of the instrumentation involved. This is followed by a section describing the application of the technique to pharmacological prob lems. Where these are not available, examples have been drawn from the other life sciences. In a final section, some further applications of each technique to problems in pharmacology are suggested.
Download or read book Protein Folding and Metal Ions written by Cláudio M. Gomes and published by CRC Press. This book was released on 2016-04-19 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: The role of metal ions in protein folding and structure is a critical topic to a range of scientists in numerous fields, particularly those working in structural biology and bioinorganic chemistry, those studying protein folding and disease, and those involved in the molecular and cellular aspects of metals in biological systems. Protein Folding an
Download or read book Conference Papers Index written by and published by . This book was released on 1979 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt: Monthly. Papers presented at recent meeting held all over the world by scientific, technical, engineering and medical groups. Sources are meeting programs and abstract publications, as well as questionnaires. Arranged under 17 subject sections, 7 of direct interest to the life scientist. Full programs of meetings listed under sections. Entry gives citation number, paper title, name, mailing address, and any ordering number assigned. Quarterly and annual indexes to subjects, authors, and programs (not available in monthly issues).
Download or read book Binding Transport and Storage of Metal Ions in Biological Cells written by Wolfgang Maret and published by Royal Society of Chemistry. This book was released on 2014-07-09 with total page 990 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal ions play key roles in biology. Many are essential for catalysis, for electron transfer and for the fixation, sensing, and metabolism of gases. Others compete with those essential metal ions or have toxic or pharmacological effects. This book is structured around the periodic table and focuses on the control of metal ions in cells. It addresses the molecular aspects of binding, transport and storage that ensure balanced levels of the essential elements. Organisms have also developed mechanisms to deal with the non-essential metal ions. However, through new uses and manufacturing processes, organisms are increasingly exposed to changing levels of both essential and non-essential ions in new chemical forms. They may not have developed defenses against some of these forms (such as nanoparticles). Many diseases such as cancer, diabetes and neurodegeneration are associated with metal ion imbalance. There may be a deficiency of the essential metals, overload of either essential or non-essential metals or perturbation of the overall natural balance. This book is the first to comprehensively survey the molecular nature of the overall natural balance of metal ions in nutrition, toxicology and pharmacology. It is written as an introduction to research for students and researchers in academia and industry and begins with a chapter by Professor R J P Williams FRS.
