Download or read book Seven coordinate complexes of molybdenum II and tungsten II containing pyridine 2 thionate and pyrimidine 2 thionate Crystal structure of W CO 3 n2 pymS 2 pymS written by P K. Baker and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report of the Institute of Terrestrial Ecology written by and published by . This book was released on 1993 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Seven coordinate pyridine 2 thione and pyrimidine 2 thione complexes of molybdenum II tungsten II written by P K. Baker and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Six and Seven coordinate Tungsten II and Molybdenum II Carbonyl Dithiocarbamate Complexes written by Bennett C. Ward and published by . This book was released on 1980 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Seven coordinate and Alkyne Complexes of Molybdenum II and Tungsten II written by Dafydd ap Kendrick and published by . This book was released on 1991 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis Characterization and Some Novel Reactions of Seven Coordinate Complexes of Molybdenum II and Tungsten II written by Christen Michael Giandomenico and published by . This book was released on 1981 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Studies of Mo and W Complexes for 2N Reduction written by Jia Min Chin and published by . This book was released on 2010 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: A series of monopyrroletriamine ligands [Arpyr(Ar')2]H3 of the form ArC4H2NHCH2N(CH2CH2NHAr')2 (Ar = 2,4,6-mesityl (Mes), 2,4,6-triisopropylphenyl (TRIP); Ar' = C6F5, 2-tolyl (o-tol), naphthyl, 3,5-(2,4,6-triisopropylphenyl)phenyl (HIPT), 3,5- dimethylphenyl, 3,5-di-tert-butylphenyl were synthesized. [Mespyr(C6F5)2]MoCl, ([Mespyr(C6F5)2]Mo = MesitylC4H2NCH2N(CH2CH2NC6F5)2) was prepared by reaction of [Mespyr(C6F5)2]H3 with MoCl4(THF)2 and base and [Mespyr(3,5-t-Bu)2]MoCl and [Mespyr(3,5- Me)2]MoCl (3,5-t-Bu=3,5-di-tert-butylphenyl, Me = 3,5-dimethylphenyl) were synthesized likewise. All three monochlorides are paramagnetic. [Mespyr(C6F5)2]MoNMe2, [[Mespyr(otol) 2]MoNMe2, [Mespyr(3,5-t-Bu)2]MoNMe2, [Mespyr(3,5-Me)2]MoNMe2 were synthesized by reaction of the ligands with Mo(NMe2)4. The resulting compounds are diamagnetic and range in color from teal blue to emerald green. These low spin monodimethylamide complexes exist in rapid equilibria with their high spin forms. [Mespyr(C6F5)2]MoN and [Mespyr(3,5-t-Bu)2]MoN were synthesized by reaction of their respective monochlorides with NaN3 and are yellow diamagnetic species. Reaction of [Mespyr(3,5-t-Bu)2]MoN with Et3OBF4 leads to {[Mespyr(3,5- t-Bu)2]MoNEt}BF4, also a diamagnetic yellow species. [Mespyr(C6F5)2]MoOTf is synthesized by the reaction of [Mespyr(C6F5)2]MoCl with AgOTf. Reduction of [Mespyr(3,5-t-Bu)2]MoCl with Na under N2 led to [Mespyr(3,5-t-Bu)2]MoNNNa(THF)x, several species with varying numbers of THF coordination, x. A single species can be obtained when [Mespyr(3,5-t- Bu)2]MoNNNa(THF)x is reacted with either NBu4Cl or 15-crown-5 ether to yield purple green 4 {[Mespyr(3,5-t-Bu)2]MoNN}NBu4 or [Mespyr(3,5-t-Bu)2]MoNNNa(15-c-5). All the diazenide species are diamagnetic. Oxidation of the diazenide with AgOTf yields [Mespyr(3,5-t- Bu)2]Mo(N2). [Mespyr(3,5-t-Bu)2]Mo(CO) is synthesized by exposure of [Mespyr(3,5-t- Bu)2]Mo(N2) to CO. Reaction of [Mespyr(3,5-t-Bu)2]MoCl with NaBPh4 and NH3 yields {[Mespyr(3,5-t-Bu)2]Mo(NH3)}BPh4. Catalytic runs employing [Mespyr(3,5-t-Bu)2]MoN as the catalyst yielded one equivalent of NH3. A triamidoamine ligand [(HIPTNCH2CH2CH2)3N]3- was synthesized and metalated with MoCl4(THF)2 to produce [(HIPTNCH2CH2CH2)3N]MoCl ([HIPTtrpn]MoCl). Reduction of [HIPTtrpn]MoCl by KC8 under an atmosphere of dinitrogen leads to the green species [HIPTtrpn]MoNNK which can be oxidized by ZnCl2(dioxane) to produce [HIPTtrpn]Mo(N2). Other complexes synthesized include {[HIPTtrpn]Mo(NH3)}+ salts and [HIPTtrpn]Mo(CO). Xray studies were carried out on [HIPTtrpn]MoN and {[HIPTtrpn]Mo(NH3)}BAr'4. This system is not catalytic for the reduction of dinitrogen to ammonia and studies were carried out to elucidate the reasons. Oxidation studies were carried out on [HIPTN3N]Mo(N2) and [HIPTN3N]W(N2) ([HIPTN3N] = [(HIPTNCH2CH2)3N]3- ). The rate of conversion of [HIPTN3N]Mo(NH3) to [HIPTN3N]Mo(N2) was studied and found to be increased in the presence of BPh3. [HIPTN3N]Mo(N2) conversion to [HIPTN3N]Mo(CO) was found to be dependent on CO pressure. Protonation studies of [HIPTN3N]Mo(N2) were also carried out. Studies of [HIPTN3N]MoNNH decomposition showed that decomposition is not base-catalyzed. [HIPTN3N]W(CO) was synthesized by exposure of [HIPTN3N]W(N2) to CO. It is a green, paramagnetic compound and its use as a standard (for determining relative concentrations of other compounds in the IR sample) in IR spectroscopic studies appears to be promising. [HIPTN3N]MoCNH2 was synthesized by addition of acid and reducing agent to [HIPTN3N]MoCN and is a yellow, diamagnetic compound. Two triamidophosphine ligands, triHIPTamine and tri-n-Buamine were synthesized. Metalation of Zr(NMe2)4 with these ligands leads to formation of pn3HIPTZrNMe2 and pn3-n- BuZrNMe2, both diamagnetic, pale yellow complexes.
Download or read book Some New Seven coordinate Tungsten II and Molybdenum II Carbonyl Complexes Containing Mono and Bidentate N S Donor Ligands written by S. Hughes and published by . This book was released on 1994 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tritertiary Arsine Tricarbonyl Complexes of Chromium Molybdenum and Tungsten and Their Reactions with Halogens written by C. D. Cook and published by . This book was released on 1964 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: The hexacarbonyls of chromium, molybdenum and tungsten react with the tritertiary arsine, bis(odimethylarsinophenyl)methyl arsine, (TTAS), (I) to form stable tri-carbonyl metal (M) complexes of the type (M(CO)3(TTAS)). The action of halogens upon these complexes was investigated. Two gram atoms of bromine or iodine are consumed per mole of complex yielding salts of the type (M(CO)3(TTAS)X)X, in which the metal atom is presumably seven-coordinate. The stability of these salts in solution decreases in the order M = W> Mo> Cr; the tungsten (II) complex is fairly inert, losing carbon monoxide only very slowly whereas the molybdenum (II) compound loses one mole of carbon monoxide on warming in methanol to form the non-electrolyte species (Mo(CO)2(TTAS)X2(o). The chromium (II) complex readily undergoes further oxidation with complete loss of carbon monoxide to form complexes of the type (Cr(TTAS)X3) where X = Br and I; the trichloro- complex was made by a different procedure. (Author).
Download or read book Organofluorine Compounds in Biology and Medicine written by V Prakash Reddy and published by Newnes. This book was released on 2015-01-25 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organofluorine Compounds in Biology and Medicine covers topics on biochemically relevant organofluorine compounds and their synthesis and biochemical pathways. Organofluorine compounds have renewed interest in pharmaceutical industry, and therefore a concise book on this topic is highly relevant to the scientific community involved in this area. Covers the synthesis, biochemical, and therapeutic applications of organofluorine compounds Offers a complete text on biochemically relevant organofluorine compounds and their synthesis and mechanistic pathways Provides one of the first major reference books on the biological and medicinal applications of organofluorine chemistry
Download or read book Separation Preconcentration and Spectrophotometry in Inorganic Analysis written by Z. Marczenko and published by Elsevier. This book was released on 2000-10-18 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spectrophotometry enables one to determine, with good precision and sensitivity, almost all the elements present in small and trace quantities of any material. The method is particularly useful in the determination of non-metals and allows the determination elements in a large range of concentrations (from single % to low ppm levels) in various materials. In Separation, Preconcentration and Spectrophotometry in Inorganic Analysis, much attention has been paid to separation and preconcentration methods, since they play an essential role in increasing the selectivity and sensitivity of spectrophotometric methods. Separation and preconcentration methods have also been utilised in other determination techniques. Spectrophotometric methods which are widely used for the determination of the elements in a large variety of inorganic materials are presented in the book whilst separation and preconcentration procedures combined with spectrophotometry are also described. This book contains recent advances in spectrophotometry, detailed discussion of the instrumentation, and the techniques and reagents used for spectrophotometric determination of elements in a wide range of materials as well as a detailed discussion of separation and preconcentration procedures that precede the spectrophotometric detection.
Download or read book Fire Debris Analysis written by Eric Stauffer and published by Academic Press. This book was released on 2007-12-10 with total page 683 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of fire debris analysis is vital to the function of all fire investigations, and, as such, Fire Debris Analysis is an essential resource for fire investigators. The present methods of analysis include the use of gas chromatography and gas chromatography-mass spectrometry, techniques which are well established and used by crime laboratories throughout the world. However, despite their universality, this is the first comprehensive resource that addresses their application to fire debris analysis. Fire Debris Analysis covers topics such as the physics and chemistry of fire and liquid fuels, the interpretation of data obtained from fire debris, and the future of the subject. Its cutting-edge material and experienced author team distinguishes this book as a quality reference that should be on the shelves of all crime laboratories. Serves as a comprehensive guide to the science of fire debris analysis Presents both basic and advanced concepts in an easily readable, logical sequence Includes a full-color insert with figures that illustrate key concepts discussed in the text
Download or read book Nanomaterials in Diagnostic Tools and Devices written by Suvardhan Kanchi and published by Elsevier. This book was released on 2020-06-19 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanomaterials in Diagnostic Tools and Devices provides a complete overview of the significance of nanomaterials in fabricating selective and performance enhanced nanodevices. It is an interdisciplinary reference that includes contributing subjects from nanomaterials, biosensors, materials science, biomedical instrumentation and medicinal chemistry. This book is authored by experts in the field of nanomaterial synthesis, modeling, and biosensor applications, and provides insight to readers working in various science fields on the latest advancements in smart and miniaturized nanodevices. These devices enable convenient real-time diagnosis of diseases at clinics rather than laboratories, and include implantable devices that cause less irritation and have improved functionality. Research in the field of nanomaterials is growing rapidly, creating a significant impact across different science disciplines and nanotechnology industries. This synthesis and modeling of nanomaterials has led to many technology breakthroughs and applications, especially in medical science. Provides a distinctive platform for the latest trends in the synthesis of smart nanomaterials for nanodevices in disease diagnostics Presents a broad range of advancements and applications of lateral-flow nanostrip for point-of-care applications Examines smart-phone based nanodevices for field-based diagnosis with accurate information Comprises more than 70 figures and illustrations that will help readers visualize and easily understand the role of nanodevices in the field of nanomedicine Serves as an ideal reference for those studying smart nanomaterials, biosensors, and nanodevices for real-time and in-situ clinical diagnosis and drug delivery
Download or read book Chelation Therapy in the Treatment of Metal Intoxication written by Jan Aaseth and published by Academic Press. This book was released on 2016-04-18 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Download or read book Fuel Oxygenates written by Damià Barceló and published by Springer Science & Business Media. This book was released on 2007-08-03 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals mainly with the problems associated with the contamination of groundwater by MTBE and TBA, but ETBE is also considered. The book, written by recognized specialists in the field, is organized in sections covering state-of-the-art analytical methods, including specific isotopic analysis, occurrence in the environment, transport and degradation processes, treatment technologies and human health risks.
Download or read book Clinical Ocular Toxicology written by Frederick T. Fraunfelder and published by Saunders. This book was released on 2008 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by international authorities in ocular toxicology, including the Founder of The National Registry of Drug-Induced Side Effects and its current Director, this essential resource provides the clinically relevant information you need to effectively diagnose and manage herbal, chemical, and drug-related ocular problems. Comprehensive coverage of all drugs' generic and trade drug names, primary uses, ocular and systemic side effects, and clinical significance make this book - like its best-selling predecessor, Drug-Induced Ocular Side Effects - the ideal reference for quick, on-the-spot consultation. Leaders in the field provide need-to-know information on all aspects of ocular toxicology-all in one concise reference. Data from the National Registry of Drug Induced Ocular Side-Effects (Casey Eye Institute, Portland, OR) and the World Health Organization (Uppsala, Sweden) help you recognize and avoid drug-induced ocular side effects. A highly templated format makes retrieval of essential knowledge quick and easy. A wealth of full-color photographs provide vivid, visual diagnostic guidance. The latest information on approved medications helps you stay up to date and provide state-of-the-art care. Extensive coverage of principles of therapy, ocular drug delivery, methods to evaluate drug-induced visual side effects, and the role of electrophysiology and psychophysics gives you the knowledge you need to manage any challenge in ocular toxicology Authoritative guidance on ocular drugs and their use in pregnancy helps you safely manage the unique needs of these patients. The inclusion of the WHO classification system helps you determine whether a particular side effect is certain, probable, or likely to occur.
Download or read book The Anomeric Effect written by Eusebio Juaristi and published by CRC Press. This book was released on 1994-10-12 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive review of the structural, conformational, and chemical manifestations of the anomeric effect. In order to present a cogent discussion of this most fundamental and relevant phenomenon, three chapters examine our present understanding of the origin of this conformational effect, based upon a wealth of theoretical and physical data. Equally important, however, are three additional chapters that deal with the general consequences of the stereoelectronic interactions that are associated with the basis of the anomeric effect. The remainder of the book is devoted to new areas of development in the topic-such as differentiation of the endo and exo anomeric interactions, specific analysis of the enthalpic component of anomeric effects, critical evaluation of the kinetics and reverse anomeric effects, discovery of a new substantial effect in second- and lower-row anomeric segments, and others.
