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Author : Arran John Wilson
Publisher :
ISBN 13 :
Total Pages : 200 pages
Book Rating : 4.:/5 (233 download)
Download or read book Chemical and Structural Studies on Some Molybdenum (VI) Oxo-complexes written by Arran John Wilson and published by . This book was released on 1981 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Peter Leverett
Publisher :
ISBN 13 :
Total Pages : 186 pages
Book Rating : 4.:/5 (225 download)
Download or read book A Structural Study of Some Molybdenum (VI) and Tungsten (VI) Oxychlorides written by Peter Leverett and published by . This book was released on 1965 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : E.R. Braithwaite
Publisher : Elsevier
ISBN 13 : 1483290891
Total Pages : 681 pages
Book Rating : 4.4/5 (832 download)
Download or read book Molybdenum written by E.R. Braithwaite and published by Elsevier. This book was released on 2013-10-22 with total page 681 pages. Available in PDF, EPUB and Kindle. Book excerpt: Molybdenum is an element with an extremely rich and interesting chemistry having very versatile applications in various fields of human activity. It is used extensively in metallurgical applications. Because of their anti-wear properties, molybdenum compounds find wide applications as lubricants - particularly in extreme or hostile environmental situations. Many molybdates and heteropolymolybdates are white and therefore used as pigments. In addition, they are non-toxic and act as efficient corrosion inhibitors and smoke suppressants. Hydroprocessing of petroleum is one of the largest industries employing heterogeneous catalysts. Molybdenum catalysts have shown great promise in the liquefaction of coal and this may develop into one of its most important catalytic uses. The use of molybdenum compounds in homogeneous catalysis is also significant. Three important classes of molybdenum compounds in the solid state are reviewed, viz., oxides, sulphides and halides. The role of molybdenum in inorganic catalysis and enzymes receives prominent mention because of their impact on the progress of science and technology. Further biochemical and enzymic factors are discussed in separate chapters and their reaction to agriculture and animal husbandry. A new classification of covalent compounds which abandons the traditional oxidation state concept allows a powerful approach to the organisation of the complex and rich chemistry of molybdenum. Dramatic colour diagrams of abundances of molybdenum compounds provide broad insights into the important features and trends in the chemistry of molybdenum including reactivity and mechanism. The book is intended for use mainly as a research monograph by the many workers who may encounter molybdenum chemistry or who are looking for its application and potential uses in different technological fields. However, it will also serve as an advanced text for university lecturers and postgraduate students interested in inorganic, physical and industrial chemistry, chemical technology or biochemistry and biotechnology.
Author : Mauricio Quiroz-Guzmán
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (271 download)
Download or read book Synthesis, Characterization and Catalytic Activity of Molybdenum(VI) Di- and Monooxo Aryloxides written by Mauricio Quiroz-Guzmán and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The chemistry of molybdenum is immensely rich and diverse. Molybdenum is essential for life, and has many applications in industry. The first chapter offers a general perspective of the chemistry of molybdenum in high oxidation states dominated by diverse oxo species, such as the MoO22+ and MoO4+ units that are focus of my research. I describe the importance of MoO22+ complexes as models for the active sites of oxo transfer molybdoenzymes (e.g. DMSO oxidase) and for industrial heterogeneous transformation such as the SOHIO process (one of our ultimate goals). I also outline the importance of MoO4+ complexes as procatalysts for metathesis polymerization and as models of deoxygenated active sites of MoO22+ oxygen catalysts that have triggered our interest. The second chapter introduces the synthesis and full characterization of 4-, 5- and 6-coordinated MoO2(OAr)2L0-1 complexes with bulky aryloxide ligands, starting from the MoO2Cl2 or MoO2Cl2(DMF)2 precursors. Steric and electronic modifications in the aryloxide moieties were performed in order to understand their effect in the final structure and yields of the synthesized complexes. The nature and mechanism of formation of the radical species detected in their synthesis is proposed. The third chapter presents the facile synthesis of varios MoO(OAr)4-nCln complexes starting from the MoO2Cl2 precursor. Their mechanism of formation is proposed and the supporting evidence for this new reaction is provided. Steric and electronic modifications in the aryloxide moieties were used to study their structural and electronic effects in the MoO4+ complexes. The fourth chapter outlines the synthesis of Mo(VI) monooxo bisphenoxides with a characteristic cis-chloro cis-bisphoxide arrangement around the MoO4+ unit. Electronic and steric modifications in the bisphenoxide rings were done to determine their effect in the structure and reactivity of the final complexes. The fifth chapter introduces the application of the synthesized MoO(OAr)4-nCln and MoO(bisphenoxides)2Cl2 complexes as procatalysts for olefin metathesis polymerization of norbornene. The correlation between structure and reactivity of the procatalyst is discussed.
Author : Russ Hille
Publisher : Royal Society of Chemistry
ISBN 13 : 1782628827
Total Pages : 254 pages
Book Rating : 4.7/5 (826 download)
Download or read book Molybdenum and Tungsten Enzymes written by Russ Hille and published by Royal Society of Chemistry. This book was released on 2016-10-10 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.
Author : Fione Dorothy Blake
Publisher :
ISBN 13 :
Total Pages : 308 pages
Book Rating : 4.:/5 (227 download)
Download or read book Some Structural Chemistry of Molybdenum (VI) Compounds written by Fione Dorothy Blake and published by . This book was released on 1975 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Richard Norman Hider
Publisher :
ISBN 13 :
Total Pages : 188 pages
Book Rating : 4.:/5 (233 download)
Download or read book Synthesis and Study of Molybdenum (VI) Complexes written by Richard Norman Hider and published by . This book was released on 1982 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Attempted Synthesis and Characterization of Some Molybdenum (V & VI) Complexes written by and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mamudu Yakubu
Publisher :
ISBN 13 :
Total Pages : 426 pages
Book Rating : 4.:/5 (314 download)
Download or read book Molybdenum Cofactor Models written by Mamudu Yakubu and published by . This book was released on 1993 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Graham Edward Taylor
Publisher :
ISBN 13 :
Total Pages : 263 pages
Book Rating : 4.:/5 (227 download)
Download or read book The Interaction of Molybdenum (VI) with Polydentate Oxygen Donor Ligands written by Graham Edward Taylor and published by . This book was released on 1979 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : John Stephen Murdzek
Publisher :
ISBN 13 :
Total Pages : 1082 pages
Book Rating : 4.:/5 (199 download)
Download or read book Synthesis and Reactivity of Some Molybdenum(VI) Alkylidene and Alkylidyne Complexes written by John Stephen Murdzek and published by . This book was released on 1988 with total page 1082 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James Macpherson
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (138 download)
Download or read book ORD and CD Studies of Some Complexes of Molybdenum(V) and Molybdenum(VI). written by James Macpherson and published by . This book was released on 1970 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jeffrey Hyde (R.)
Publisher :
ISBN 13 :
Total Pages : 196 pages
Book Rating : 4.:/5 (117 download)
Download or read book Synthesis, Chemical and Structural Characterization of Complexes of Molybdenum with Sulfur and Nitrogen Containing Ligands written by Jeffrey Hyde (R.) and published by . This book was released on 1981 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James Thomas Lyon
Publisher :
ISBN 13 :
Total Pages : 334 pages
Book Rating : 4.:/5 (139 download)
Download or read book Chemical Studies on Oxomolybdenum (VI, IV) Complexes as Bioinorganic Models for the Molybdenum Oxidases written by James Thomas Lyon and published by . This book was released on 1985 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Alvin A. Holder
Publisher :
ISBN 13 :
Total Pages : 660 pages
Book Rating : 4.:/5 (324 download)
Download or read book Syntheses, Characterisation, and Reactivity of Some Coordinated Oxo-molybdenum (VI) Complexes in Aqueous Solution written by Alvin A. Holder and published by . This book was released on 1994 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Fu-Min Su
Publisher :
ISBN 13 :
Total Pages : 166 pages
Book Rating : 4.:/5 (153 download)
Download or read book Studies on Synthesis, Properties and Reactions of High-valent Oxo Molybdenum and Tungsten Complexes written by Fu-Min Su and published by . This book was released on 1986 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Alejandro Gaston Lichtscheidl
Publisher :
ISBN 13 :
Total Pages : 222 pages
Book Rating : 4.:/5 (89 download)
Download or read book Ligand Variation in Molybdenum Imido Alkylidene Complexes written by Alejandro Gaston Lichtscheidl and published by . This book was released on 2012 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chapter 1. A general introduction is given. Chapter 2. The biscarboxylate species, Mo(NR)(CHCMe 2Ph)(O 2CPh3)2 (R = 2,6-i-Pr2C6H3, 2,6- Me2C6H3, 2-t-BuC 6H4, or 1 -adamantyl) are compared to newly synthesized bis(terphenylcarboxylate) species, Mo(NR)(CHCMe 2Ph)(O 2CTer)2 (Ter = 2,6-diphenyl-4- methylphenyl or 2,6-diphenyl-4-methoxyphenyl). Preparation of bis(terphenylcarboxylate) species was accomplished through protonolysis of Mo(NR)(CHCMe2R')(Me2Pyr)2 with two equivalents of TerCO2H and one of them was characterized through X-ray crystallography. Photolysis experiments of many of the biscarboxylate complexes led to rate constants for the converstion of anti to syn species, which are much slower than bisalkoxide species. Trimethylphosphine adducts of selected triphenylacetate complexes have been isolated and studied in solution. Protonolysis of Mo(NAr)(CHCMe 2R')(Me 2Pyr)2 (Ar = 2,6-i-Pr 2C6H3) with one equivalent of TerCO2H led to the isolation of a handful of monocarboxylate species, Mo(NAr)(CHCMe 2Ph)(O 2CAr')(Me2Pyr). An X-ray structure of one of them was also characterized. Several of the bis(triphenylacetate) complexes and all of the monocarboxylates are active initiators for the regioselective polymerization of diethyl dipropargylmalonate (DEPDM). In the case of the latter compounds, activity towards olefins is also observed and briefly mentioned.
