Download or read book Synthesis and Characterization of Monomeric and Dimeric Complexes of Molybdenum and Tungsten Containing Metal ligand Multiple Bonds written by Keith Anthony Hall and published by . This book was released on 1993 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1994 with total page 912 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Synthesis Characterization and Reactivity of Molybdenum and Tungsten Iron Sulfur Complexes written by Harry Craig Silvis and published by . This book was released on 1981 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metal Ligand Multiple Bonds written by William A. Nugent and published by Wiley-Interscience. This book was released on 1988-11-14 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: The only comprehensive one-volume text/reference on metal-ligand multiple bonds. Stresses the unified nature of the field and includes handy new tabulations of data. The flow within each subtopic is oxygen to nitrogen to carbon. Coverage is up-to-date--virtually every subtopic leads to interesting questions for future research. Presents information otherwise scattered through hundreds of publications.
Download or read book The Chemistry of Rhenium and Tungsten Porphyrin Complexes in Low Oxidation States Synthesis and Characterization of Rhenium and Tungsten Porphyrin Dimers Containing Metal metal Multiple Bonds written by James Michael Garner and published by . This book was released on 1989 with total page 374 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 2002 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preparation and Characterization of Dimeric and Tetrameric Clusters of Molybdenum and Tungsten written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The cyclo-addition of two Mo2Cl4(P(C6H5)3)2(CH3OH)2 molecules has produced a new type of tetrameric molybdenum cluster, Mo4ClL4. Structural characterization of this dimer revealed weak molybdenum-methanol bonding which was consistent with the observed reactivity of the compound. New synthetic methods were devised for the preparation of Mo4X8L4 clusters where X = Cl, Br, I and L = PR3, Po3, RCN, CH3OH. A scheme for the metal-metal bonding in these clusters was presented which was in agreement with the known structural features of Mo4Cl8(PR3)4, R = C2H5, n-C4H9. The preparation of the analogous W4Cl8(PR3)4 cluster from WCl4 was accomplished by application of techniques used in the molybdenum syntheses. The single crystal x-ray structure revealed slight differences from the molybdenum analog which were rationalized in terms of the known behavior in dimeric tungsten and molybdenum species. The attempted preparation of a tetrameric tungsten cluster from W2(mhp)4 was unsuccessful (mhp = anion of 2-methyl-6-hydroxypyridine). Instead, the new tungsten dimer, W2Cl2(mhp)3, was isolated which possessed a metal-metal bond order of 3.5. The x-ray crystal structure of the dimer revealed that the chlorine atoms were situated cis, one bound to each tungsten. Cyclic voltammetry showed that the compound could be reversibly reduced, presumably to a W2/sup 4 +/ dimer containing a quadruple metal-metal bond.
Download or read book Synthesis Reactivity and Electronic Structure of Molybdenum and Tungsten Complexes written by Kristine Quinlan and published by Ann Arbor, Mich. : University Microfilms International. This book was released on 2002 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis Characterization and Reactivity of Molybdenum and Tungsten Imido Complexes of Relevance to Alkene Dimerization written by and published by . This book was released on 2009 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Molybdenum and Tungsten Enzymes written by Russ Hille and published by Royal Society of Chemistry. This book was released on 2016-09-29 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: There has been enormous progress in our understanding of molybdenum and tungsten enzymes and relevant inorganic complexes of molybdenum and tungsten over the past twenty years. This set of three books provides a timely and comprehensive overview of the field and documents the latest research. Building on the first volume that focussed on biochemistry aspects, the second volume in the set focusses on the inorganic complexes that model the structures and reactivity of the active sites of each major group of molybdenum and tungsten enzymes. Special attention is given to synthetic strategies, reaction mechanism and chemical kinetics of these systems. The introductory chapter provides a useful overview and places the topic of the book into a wider context. This text will be a valuable reference to workers both inside and outside the field, including graduate students and young investigators interested in developing new research programs in this area.
Download or read book Synthesis and Reactivity of Molybdenum and Tungsten Bis tri tert butylsiloxide Imido and Oxo Complexes written by Devon Charles Rosenfeld and published by . This book was released on 2005 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tungsten Complexes Containing Metal carbon Multiple Bonds written by Tsz Fai Leung and published by . This book was released on 2017 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analytical Chemistry of Molybdenum and Tungsten written by W. T. Elwell and published by Elsevier. This book was released on 2013-10-22 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: International Series of Monographs in Analytical Chemistry, Volume 47: Analytical Chemistry of Molybdenum and Tungsten describes the chemical and instrumental methods of analysis of molybdenum and tungsten. This book is composed of 15 chapters that particularly consider detailed methods for determining these metals in typical samples and their alloys by both classical and modern techniques. The opening chapters discuss the history, occurrence, physico-chemical properties, and applications of molybdenum and tungsten. The succeeding chapters deal with the metals’ sampling, decomposition, separation, and qualitative detection. Considerable chapters are devoted to various chemical and instrumental methods for their analysis, including gravimetry, titrimetry, colorimetry, polarography, amperometry, coulometry, emission and atomic absorption spectroscopy, X-ray spectrophotometry, mass spectrometry, and radiochemical methods. The concluding chapter examines the determination of impurities and alloying elements. This book will prove useful to analytical and inorganic chemists, as well as analytical and inorganic chemistry students.
Download or read book Molybdenum and Tungsten Enzymes written by Russ Hille and published by Royal Society of Chemistry. This book was released on 2016-09-30 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: There has been enormous progress in our understanding of molybdenum and tungsten enzymes and relevant inorganic complexes of molybdenum and tungsten over the past twenty years. This set of three books provides a timely and comprehensive overview of the field and documents the latest research. Building on the first and second volumes that focussed on biochemistry and bioinorganic chemistry aspects, the third volume focusses on spectroscopic and computational methods that have been applied to both enzymes and model compounds. A particular emphasis is placed on how these important studies have been used to reveal critical components of enzyme mechanisms.This text will be a valuable reference to workers both inside and outside the field, including graduate students and young investigators interested in developing new research programs in this area.
Download or read book Molybdenum and Tungsten Metal Organic Decomposition Complex Synthesis and Characterization written by Kaitlyn Clark and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Synthesis and characterization of silver, molybdenum and tungsten metal organic decomposition complexes is reported. Molybdenum and tungsten are of interest, in order to expand 3D printing capabilities, by providing precursors capable of forming metal structures with superior chemical and mechanical properties. In addition to using known synthetic pathways using silver precursors, molybdenum hexacarbonyl, tungsten hexacarbonyl were reacted with three ligands: ethylenediamine, diethylenetriamine, and triethylamine to develop MOD complexes. The MOD products were characterized by NMR, FTIR and thermogravimetric (TGA) analysis. Thermal decomposition mechanisms were studied by TGA. Whereas the silver MOD complexes were found to decompose to metallic silver at temperatures lower than 200°C in both inert and atmospheric conditions, the molybdenum diethylenetriamine complex and the molybdenum triethylamine complex decomposed to molybdenum metal, and only in inert conditions at temperatures well in excess of 200°C. The other molybdenum complex, as well as all of the tungsten complexes decomposed to their oxide forms at temperatures greater than 600°C in inert and atmospheric conditions. Triethylamine-tungsten complex was found to sublime at 110°C. A hard-soft acid-base theoretical analysis indicates that, as opposed to the silver complexes where electron density is more localized on the metal center, electron density is withdrawn from the metal centers in the case of molybdenum and tungsten complexes. Additional stability provided by carbonyl p-backbonding for the carbonyl ligands prevented low temperature decomposition. As a result, this work shows that molybdenum and tungsten hexacarbonyls are not suitable starting materials for creating MOD complexes when one or more of the carbonyl groups remain on the complex. The complexes may, however, be used for metal oxide deposition instead of metal deposition."--Abstract.
Download or read book Synthesis and Characterisation of Some New Complexes of Molybdenum II and Tungsten II Containing Anionic and Neutral Sulphur Donor Ligands written by Alec Ian Clark and published by . This book was released on 1997 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Characterization of Multiply Metal metal Bonded Complexes of Molybdenum and Tungsten written by Richard Trotter Carlin and published by . This book was released on 1982 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
