Download or read book A New Molybdenum Cluster Compound written by M. Herceg and published by . This book was released on 1967 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book Solid Molybdenum II Chloride Cluster Compounds from a Hydrogen Bonding Point of View written by Andreas Flemström and published by . This book was released on 2005 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Molybdenum Chemistry of Biological Significance written by William E. Newton and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt: In retrospect, it was obvious that we were both, quite inde pendently, contemplating a conference on the role of molybdenum in biology and related chemistry. At the time though, the meeting of minds on this matter was quite surprising. Although this subject has been treated in previous meetings within the overall context of, say, magnetic resonance or nitrogen fixation, it was apparent to us both that research in molybdenum-containing enzymes and molyb denum chemistry had progressed rapidly in the last several years. Jointly, we decided to organize the first meeting on Molybdenum Chemistry of Biological Significance which was held at the Hotel Lake Biwa, Shiga, Japan, on April 10-13, 1979. This volume con stitutes the Proceedings of that international conference and covers the broad spectrum of interests from enzymes to coordination chemistry. It should serve not only as a source of new information on the latest research results in this area and as a useful ref erence tool, but should also allow a newcomer or other peripherally interested researcher to become conversant very rapidly with the "state-of-the-art" in this specialized and important area of research. The conference was sponsored by the Japan Society for the Promotion of Science, the Japan World Exposition Commemerative Fund the Yamada Science Foundation, the Nissan Science Foundation, the Chemical Society of Japan (Kinki Regional Office) and the Agri cultural Chemical Society of Japan (Kansai Branch). We thank these organizations sincerely for their interest and generosity.
Download or read book Synthesis and Characterization of Octahedral Molybdenum Chloride Sulfide Cluster Compounds written by Deborah Ann Spink and published by . This book was released on 1986 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ligated Transition Metal Clusters in Solid state Chemistry written by Jean-François Halet and published by Springer Nature. This book was released on 2019-08-29 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume dedicated to the memory of Marcel Sergent who was a leader in this field for many years, addresses past achievements and recent developments in this vibrant area of research. Large classes of ligated transition metal clusters are produced either exclusively or most reliably by means of high-temperature solid-state reactions. Among them, the Chevrel-Sergent phases and related materials have generated enormous interest since their discovery in 1971. Today, these materials and their numerous derivatives still constitute a vivid area of research finding some applications not only in superconductivity, but also in catalysis, optics or thermoelectricity to mention a few.
Download or read book Synthesis and Characterization of Novel Intercalation Compounds of Molybdenum Trioxide and Molybdenum Disulfide written by Rabindranath Bissessur and published by . This book was released on 1994 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spectral and Chemical Studies of Niobium and Molybdenum Metal Atom Cluster Compounds written by Raymond Arthur Mackay and published by . This book was released on 1966 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Characterization of Several Molybdenum Chloride Cluster Compounds written by William Winder Beers and published by . This book was released on 1983 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis Characterization and Reactivity of Sulfided Hexanuclear Molybdenum Cluster Compounds written by Deborah Ann Spink and published by . This book was released on 1989 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Molybdenum and Its Compounds written by Viswanathan S. Saji and published by Nova Science Pub Incorporated. This book was released on 2014-01-01 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: Molybdenum and its compounds (oxides, sulphides, carbides, nitrides, selenides, molybdates and molybdenum complexes) have a number of applications in alloys, catalysts, electrochromics, sensors, capacitors, batteries, solar cells and so on. Promising works on their nanostructures have been reported as a means to enhance the performance of materials. The present book is an edited volume on molybdenum and its compounds in different applications. There are chapters concentrating on molybdenum and its alloys, molybdenum oxides, molybdenum sulphides, molybdenum carbides, molybdenum nitrides, molybdenum selenides, molybdenum blues, Keplerate-type molecular spheres, molybdenum complexes and molybdates.
Download or read book Superconductivity in Ternary Compounds I written by O. Fischer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: The structural. electronic and lattice properties of superconducting ternary com pounds are the subject of this Topics volume. Its companion volume (Topics in Cur rent Physics. Volume 34) deals primarily with the mutual interaction of supercon ductivity and magnetism in ternary compounds. These two volumes are the culmination of a project. started nearly two years ago. that was inspired by the intense re search effort. both experimental and theoretical. then being expended to explore and develop an understanding of the remarkable physical properties of ternary super conductors. Research activity on this subject has increased in the meantime. The interest in ternary superconductors originated in 1972. when B.T. Matthias and his co-workers first discovered superconductivity in several ternary molybdenum sulfide compounds that had been synthesized in 1971 by R. Chevrel. M. Sergent. and J. Prigent. The superconducting critical temperature Tc of one of the compounds. PbMo S • was reported to be ~ 15 K. This value is sufficiently high that there was g 6 (and still is) reason to expect that other ternary compounds would be found with superconducting transition temperatures rivaling those of the A15 compounds. of which Nb Ge has the record high Tc of 23 K. The interest in ternary superconductors 3 received further impetus when several of the ternary molybdenum sulfides were found to have exceptionally high upper critical magnetic fields. some of them in the neighborhood of 50 Tesla or more. An immense amount of research on ternary molybdenum chalcogenides then followed.
Download or read book Unconventional Superconductivity and Strong Electronic Correlations in Molybdenum Cluster Compounds written by Alexander Petrović and published by . This book was released on 2009 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Characterization of Several Molybdenum Chloride Cluster Compounds written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Investigation into the direct synthesis of Mo4Cl(P(C2H5)3)4 from Mo2(OAc)4 led to a synthetic procedure that produces yields greater than 80%. The single-crystal structure disclosed a planar rectangular cluster of molybdenum atoms. Metal-metal bond distances suggest that the long edges of the rectangular cluster should be considered to be single bonds and the short metal-metal bonds to be triple bonds. This view is reinforced by an extended Hueckel calculation. Attempts to add a metal atom to Mo4Cl(PR3)4 to form Mo5Cl10(PR3)3 led instead to a compound with the composition Mo8Cl16(PR3)4. Solution and reflectance uv-visible spectra and x-ray photoelectron spectra suggest that tetranuclear molybdenum units are present. The facile reaction between Mo8Cl16(PR3)4 and PR3 imply that the linkage between tetrameric units is weak.
Download or read book Synthesis of New Molybdenum II Compounds Containing the Mo6I4core written by Laura Kathleen Madden and published by . This book was released on 1993 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water Substitution Kinetic Studies on Bioxo capped Molybdenum Clusters written by Kris Anthony Pineda and published by . This book was released on 2014 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oxo-centered trinuclear transition metal clusters have potential applications in catalysis and biomedical research. Although, the synthesis and catalytic properties of these compounds have been studied extensively, little is known regarding their basic fundamental chemistry. Research focusing on the reactivity of cluster compounds and its dependence on structure is important as it will aid in the development of transition metal cluster-based catalysts. In this study, the reactivity of coordinated water ligands for a series of bioxo-capped trinuclear molybdenum clusters with bridging carboxylate ligands was examined in detail. This work utilized variable temperature 1H NMR to determine rate constants and activation parameters for the first water substitution step. Rates of water substitution were roughly correlated to metal-water bond lengths and calculated activation parameters were used to assign an associative or dissociative reaction mechanism. A newly synthesized cluster with bridging chloroacetate ligands was also characterized and a new alkylidyne-capped cluster was discovered.
Download or read book The Nitrogen Fixation and its Research in China written by Guo-Fan Hong and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen Fixation by symbiotic organisms is considered an important contribution to the solution of food problems throughout the world. For manyyears, Chinese scientists have focused their research in this area. Today more than half of the total nitrogen fertilizers applied are from biological fixation sources. The editor is an international renowned scientist at the Chinese Academy of sciences. He has brought together contributions from various research fields in China and Europe.Together they present the state-of-the-art in nitrogen-fixation research. The studies range from actino- mycete fixation induced in various genera andspecies of plants, mechanisms and chemical modeling of enzyme systems togenetical engineering of organisms.
