Chelating Agents and Metal Chelates

Chelating Agents and Metal Chelates
Author: F Dwyer
Publisher: Elsevier
Total Pages: 547
Release: 2012-12-02
Genre: Science
ISBN: 0323146414

Chelating Agents and Metal Chelates focuses on the structure and properties of metal chelates, as well as bond types, stereochemistry, and optical phenomena. The selection first offers information on historical background and fundamental concepts and the nature of metal-ligand bond. Discussions focus on the structure and stability of metal chelates, bond types and characteristic properties, classes of acceptor metal atoms, and metal-metal bonds in complex compounds. The text also touches on bidentate chelates, design and stereochemistry of multidentate chelating agents, and optical phenomena in metal chelates. The publication ponders on oxidation-reduction potentials as functions of donor atom and ligand and metal chelates of ethylenediaminetetraacetic acid and related substances. Topics include liquid junction potentials, reversibility, measurement of redox potentials, ethylenediaminetetraacetato chelate couples, and metal chelates of ethylenediaminetetraacetic acid. The text also takes a look at metal chelates in biological systems and physical and coordination chemistry of tetrapyrrole pigments. The manuscript is a vital reference for senior students, research workers, biologists, and medical scientists interested in the chemistry of metal chelates.

Metal Chelation in Medicine

Metal Chelation in Medicine
Author: Robert R Crichton
Publisher: Royal Society of Chemistry
Total Pages: 336
Release: 2016-10-18
Genre: Science
ISBN: 1782623892

Metal chelators are emerging as versatile tool with many medical applications. Their versatility allows them to be used in chelation therapy for treating diseases caused by toxic and heavy metal poisoning, chelating agents are capable of binding to toxic metal ions to form complex structures which are easily excreted from the body removing them from intracellular or extracellular spaces. In addition, metal chelators can also be applied as contrast agents in MRI scanning. Metal Chelation in Medicine provides a clear and timely perspective on the role of chelating agents in the management of metal intoxications and storage diseases. Written by leaders in the field of chelators, this publication is at the cutting-edge of the subject. It covers a broad range of topics such as the use of metal chelators in non-invasive assessment of brain iron overload, and the treatment of systemic iron overload and neurodegenerative diseases. As such it is particularly valuable to clinicians treating metal poisonings and metal storage diseases. However, it is also a useful text for researchers, industry professionals and university students with a specific interest in medicinal chemistry, chelation, metal ions, imaging and non-invasive techniques.

Hepatotoxicity

Hepatotoxicity
Author: Hyman J. Zimmerman
Publisher: Lippincott Williams & Wilkins
Total Pages: 850
Release: 1999
Genre: Medical
ISBN: 9780781719520

Written by the foremost authority in the field, this volume is a comprehensive review of the multifaceted phenomenon of hepatotoxicity. Dr. Zimmerman examines the interface between chemicals and the liver; the latest research in experimental hepatotoxicology; the hepatotoxic risks of household, industrial, and environmental chemicals; and the adverse effects of drugs on the liver. This thoroughly revised, updated Second Edition features a greatly expanded section on the wide variety of drugs that can cause liver injury. For quick reference, an appendix lists these medications and their associated hepatic injuries. Also included are in-depth discussions of drug metabolism and factors affecting susceptibility to liver injury.

Biogeochemistry of Chelating Agents

Biogeochemistry of Chelating Agents
Author: Bernd Nowack
Publisher:
Total Pages: 480
Release: 2005
Genre: Language Arts & Disciplines
ISBN:

Chelating agents are in widespread use in technical and industrial applications. They are used extensively to control metal speciation in the pulp and paper industry, in photographical processes, in cooling waters, the oil industry, and in the nuclear industry. Further, they are incorporated into industrial and household cleaners, personal care products, and foodstuffs. As a result of such extensive use, anthropogenic chelating agents are ubiquitous in the environment. Due to their strong interactions with metals they have received considerable attention due to the potential for adverse effects on ecosystems and health. The goal of this book is to bring together researchers from a variety of disciplines - chemistry, environmental chemistry, soil chemistry, microbiology, phytoremediation, bioremediation, wastewater treatment, industry (pulp and paper, textile, oil production) - to present different aspects of the unique chemical properties of these compounds. This book describes the biogeochemistry of these important compounds, from their structure and speciation, through their behavior in natural systems, to their use in enhanced phytoremediation and their removal through biodegradation.

Handbook of Arsenic Toxicology

Handbook of Arsenic Toxicology
Author: Swaran Jeet Singh Flora
Publisher: Academic Press
Total Pages: 752
Release: 2014-12-26
Genre: Science
ISBN: 0124199550

Throughout history, arsenic has been used as an effective and lethal poison. Today, arsenic continues to present a real threat to human health all over the world, as it contaminates groundwater and food supplies. Handbook of Arsenic Toxicology presents the latest findings on arsenic, its chemistry, its sources and its acute and chronic effects on the environment and human health. The book takes readings systematically through the target organs, before detailing current preventative and counter measures. This reference enables readers to effectively assess the risks related to arsenic, and provide a comprehensive look at arsenic exposure, toxicity and toxicity prevention. - Brings together current findings on the effects of arsenic on the environment and human health - Includes state-of-the-art techniques in arsenic toxicokinetics, speciation and molecular mechanisms - Provides all the information needed for effective risk assessment, prevention and countermeasure

Chelation Therapy in the Treatment of Metal Intoxication

Chelation Therapy in the Treatment of Metal Intoxication
Author: Jan Aaseth
Publisher: Academic Press
Total Pages: 390
Release: 2016-04-18
Genre: Medical
ISBN: 0128030739

Chelation Therapy in the Treatment of Metal Intoxication presents a practical guide to the use of chelation therapy, from its basic chemistry, to available chelating antidotes, and the application of chelating agents. Several metals have long been known to be toxic to humans, and continue to pose great difficulty to treat. These challenges pose particular problems in industrial settings, with lead smelting known to be associated with hemopoietic alterations and paralyses, and the inhalation of mercury vapor in mercury mining being extremely detrimental to the central nervous system. Clinical experience has demonstrated that acute and chronic human intoxications with a range of metals can be treated efficiently by administration of chelating agents. Chelation Therapy in the Treatment of Metal Intoxication describes the chemical and biological principles of chelation in the treatment of these toxic metal compounds, including new chelators such as meso-2,3-dimercaptosuccinic acid (DMSA) and D,L-2,3-dimercapto-1-propanesulfonic acid (DMPS). - Presents all the current findings on the potential for chelation as a therapy for metal intoxication - Presents practical guidelines for selecting the most appropriate chelating agent - Includes coverage on radionuclide exposure and metal storage diseases - Describes the chemical and biological principles of chelation in the treatment of toxic metal compounds

Lipid Oxidation

Lipid Oxidation
Author: Edwin N. Frankel
Publisher: Elsevier
Total Pages: 487
Release: 2014-01-23
Genre: Technology & Engineering
ISBN: 085709792X

In this second edition, Edwin Frankel has updated and extended his now well-known book Lipid oxidation which has come to be regarded as the standard work on the subject since the publication of the first edition seven years previously. His main objective is to develop the background necessary for a better understanding of what factors should be considered, and what methods and lipid systems should be employed, to achieve suitable evaluation and control of lipid oxidation in complex foods and biological systems. The oxidation of unsaturated fatty acids is one of the most fundamental reactions in lipid chemistry. When unsaturated lipids are exposed to air, the complex, volatile oxidation compounds that are formed cause rancidity. This decreases the quality of foods that contain natural lipid components as well as foods in which oils are used as ingredients. Furthermore, products of lipid oxidation have been implicated in many vital biological reactions, and evidence has accumulated to show that free radicals and reactive oxygen species participate in tissue injuries and in degenerative disease. Although there have been many significant advances in this challenging field, many important problems remain unsolved. This second edition of Lipid oxidation follows the example of the first edition in offering a summary of the many unsolved problems that need further research. The need to understand lipid oxidation is greater than ever with the increased interest in long-chain polyunsaturated fatty acids, the reformulation of oils to avoid hydrogenation and trans fatty acids, and the enormous attention given to natural phenolic antioxidants, including flavonoids and other phytochemicals.

Chemistry of Polymeric Metal Chelates

Chemistry of Polymeric Metal Chelates
Author: Gulzhian I. Dzhardimalieva
Publisher: Springer
Total Pages: 1036
Release: 2018-02-13
Genre: Technology & Engineering
ISBN: 3319560247

This book deals with the chemistry of polymeric metal chelates. The main results and the production and chemical structure of polymers with chelate units as well as the specificity of metal complex binding of different structure are presented here. This book also reveals the transformations which components undergo in the course of chelation. Special attention is paid not only to synthetic but also to natural (including living) systems. The usage of polymeric metal chelates and their development are examined. The related research was performed for chelates with chain structure. This book is useful to researchers being active in synthesis and design of macromolecular metal chelates

A Textbook of Inorganic Chemistry – Volume 1

A Textbook of Inorganic Chemistry – Volume 1
Author: Mandeep Dalal
Publisher: Dalal Institute
Total Pages: 482
Release: 2017-01-01
Genre: Science
ISBN: 8193872002

An advanced-level textbook of inorganic chemistry for the graduate (B.Sc) and postgraduate (M.Sc) students of Indian and foreign universities. This book is a part of four volume series, entitled "A Textbook of Inorganic Chemistry – Volume I, II, III, IV". CONTENTS: Chapter 1. Stereochemistry and Bonding in Main Group Compounds: VSEPR theory; dπ -pπ bonds; Bent rule and energetic of hybridization. Chapter 2. Metal-Ligand Equilibria in Solution: Stepwise and overall formation constants and their interactions; Trends in stepwise constants; Factors affecting stability of metal complexes with reference to the nature of metal ion and ligand; Chelate effect and its thermodynamic origin; Determination of binary formation constants by pH-metry and spectrophotometry. Chapter 3. Reaction Mechanism of Transition Metal Complexes – I: Inert and labile complexes; Mechanisms for ligand replacement reactions; Formation of complexes from aquo ions; Ligand displacement reactions in octahedral complexes- acid hydrolysis, base hydrolysis; Racemization of tris chelate complexes; Electrophilic attack on ligands. Chapter 4. Reaction Mechanism of Transition Metal Complexes – II: Mechanism of ligand displacement reactions in square planar complexes; The trans effect; Theories of trans effect; Mechanism of electron transfer reactions – types; outer sphere electron transfer mechanism and inner sphere electron transfer mechanism; Electron exchange. Chapter 5. Isopoly and Heteropoly Acids and Salts: Isopoly and Heteropoly acids and salts of Mo and W: structures of isopoly and heteropoly anions. Chapter 6. Crystal Structures: Structures of some binary and ternary compounds such as fluorite, antifluorite, rutile, antirutile, crystobalite, layer lattices- CdI2, BiI3; ReO3, Mn2O3, corundum, pervoskite, Ilmenite and Calcite. Chapter 7. Metal-Ligand Bonding: Limitation of crystal field theory; Molecular orbital theory: octahedral, tetrahedral or square planar complexes; π-bonding and molecular orbital theory. Chapter 8. Electronic Spectra of Transition Metal Complexes: Spectroscopic ground states, Correlation and spin-orbit coupling in free ions for Ist series of transition metals; Orgel and Tanabe-Sugano diagrams for transition metal complexes (d1 – d9 states); Calculation of Dq, B and β parameters; Effect of distortion on the d-orbital energy levels; Structural evidence from electronic spectrum; John-Tellar effect; Spectrochemical and nephalauxetic series; Charge transfer spectra; Electronic spectra of molecular addition compounds. Chapter 9. Magantic Properties of Transition Metal Complexes: Elementary theory of magneto - chemistry; Guoy’s method for determination of magnetic susceptibility; Calculation of magnetic moments; Magnetic properties of free ions; Orbital contribution, effect of ligand-field; Application of magneto-chemistry in structure determination; Magnetic exchange coupling and spin state cross over. Chapter 10. Metal Clusters: Structure and bonding in higher boranes; Wade’s rules; Carboranes; Metal carbonyl clusters - low nuclearity carbonyl clusters; Total electron count (TEC). Chapter 11. Metal-π Complexes: Metal carbonyls: structure and bonding; Vibrational spectra of metal carbonyls for bonding and structure elucidation; Important reactions of metal carbonyls; Preparation, bonding, structure and important reactions of transition metal nitrosyl, dinitrogen and dioxygen complexes; Tertiary phosphine as ligand.