The Organometallic and Metal-Organic Chemistry of Molybdenum
About: This article is published in Studies in Inorganic Chemistry.The article was published on 1994-01-01. It has received 3 citations till now. The article focuses on the topics: Molybdenum.
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21 May 2020
TL;DR: In this article, the authors present a survey of the Molybdenum chemistry and its application in various areas of industry, such as mining, automotive, agriculture, and economic aspects.
Abstract: The article contains sections titled:
1. Introduction
2. Properties
3. Occurrence
3.1. Minerals
3.2. Deposits
4. Production
4.1. Concentration
4.2. Processing of Concentrate
4.3. Recovery from Spent Petroleum Catalysts
4.4. Recovery during Production of Tungsten Ores
4.5. Production of Molybdenum Metal Powder
4.6. Production of Compact Molybdenum Metal
4.7. Processing of Molybdenum
4.8. Molybdenum-Base Alloys
5. Uses
6. Production of Ferromolybdenum
6.1. Ferromolybdenum Grades
6.2. Raw Materials
6.3. Submerged Arc Furnace Carbothermic Reduction
6.4. Metallothermic Reduction
7. Molybdenum Compounds
7.1. Overview of Molybdenum Chemistry
7.2. Molybdenum Oxides
7.3. Molybdenum Chalcogenides
7.4. Molybdenum Halides
7.5. Molybdates, Isopolymolybdates, and Heteropolymolybdates
7.6. Other Molybdenum Compounds
8. Uses of Molybdenum Compounds
8.1. Catalysis
8.2. Lubrication
8.3. Corrosion Inhibition
8.4. Flame Retardancy and Smoke Suppression
8.5. Pigments
8.6. Agriculture
9. Analysis
10. Economic Aspects
11. Environmental Aspects
12. Toxicology and Occupational Health
35 citations
TL;DR: The heteroleptic molybdenum complexes have been analyzed quantitatively by means of linear solvation energy relationships based on Kamlet-Taft solvatochromism parameters, as well as on Drago's "unified scale of solvent polarity".
Abstract: The heteroleptic molybdenum complexes [{Mo(NO)Tp*X}n(L-L)] [Tp* = HB(3,5-Me2C3HN2)3; X = Cl, I; L-L = 4-NC5H4(CHCH)4C5H4N-4‘, n = 1, 2; X = Cl; L-L = {4,4‘-NC5H4CHCHC(Me)CHCH=}2, n = 2] have a low energy absorbance in their electronic spectra which exhibits solvatochromic shifts. These have been analyzed quantitatively by means of linear solvation energy relationships based on Kamlet−Taft solvatochromism parameters, as well as on Drago's “unified scale of solvent polarity”. Each of these approaches leads to satisfactory linear models, in qualitative agreement with one another. The solvatochromism is due to a combination of increased solvent dipolarity/polarizability and solvent-to-solute hydrogen bonding, each preferentially stabilizing polar ground states compared with less polar excited states. The latter originate from metal-to-ligand charge transfer. Quantitatively, the Drago and Kamlet−Taft models differ somewhat. The former are statistically slightly better than those based on Kamlet−Taft parameters.
15 citations
Journal Article•
TL;DR: In this paper, the reaction between [WBr 3 (CO) 2 (η 5 -C 5 H 5 )] and excess of Tl(SC 6 F 5 ) affords Tl[WBr 2 (CO), η 5 −C 5H 5 )] (2b) as the major product and [W(SC6F 5 ) 3 ( CO), Δ − 5 − C 5 H5 )] (3) as minor product.
Abstract: The reaction between [WBr 3 (CO) 2 (η 5 -C 5 H 5 )] and excess of Tl(SC 6 F 5 ) affords Tl[W(SC 6 F 5 ) 4 (η 5 -C 5 H 5 )] (2b) as the major product and [W(SC 6 F 5 ) 3 (CO)(η 5 -C 5 H 5 )] (3) as the minor product. Complex (3) has been structurally characterised as its 0.5 CH 2 Cl 2 solvate by X-ray diffraction
References
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56 citations
TL;DR: In this paper, les composes donnes sont oxydes and reduits suivant des processus a 2 electrons, and l'oxydation est irreversible and la reduction se produit avec la rupture de la liaison metal-metal.
Abstract: Les composes donnes sont oxydes et reduits suivant des processus a 2 electrons. L'oxydation est irreversible et la reduction se produit avec la rupture de la liaison metal-metal suivant des mecanismes ECE ou ECEC
55 citations
TL;DR: Etude de la structure electronique de plusieurs complexes bis (η-arene) metal par RPE and spectroscopie photoelectronique a l'helium.
54 citations
TL;DR: In this article, the Bis-[dithiocarbamato]-tricarbonyl-Mo-and -W-Komplexen (I) reagieren mit den Bis-[DithiOCarbamatos]-ticaramato-tricaronyl Mo-and-W-komplexes (II) zu den stabilen Diazoalkan-Komponenten (III).
Abstract: Die Diazoalkane (II) reagieren mit den Bis-[dithiocarbamato]-tricarbonyl-Mo- und -W-Komplexen (I) zu den stabilen Diazoalkan-Komplexen (III).
53 citations
TL;DR: In this article, the first metal polychalcogenides were synthesized in the hydrothermal conditions by using alkali carbonates as mineralizers, using Se{sub x}{sup 2{minus} as the mineralizers.
Abstract: Recently, the authors have been exploring the chemistry of metal polychalcogenides with various synthetic methods such as traditional room temperature solution and unusual molten salt techniques with considerable success. In order to expand the synthetic repertoire in this area, they have been experimenting with hydrothermal conditions to assess their potential as variable synthetic routes to novel metal polychalcogenides. Hydrothermal synthesis of chalcogenides is very little studied, despite its demonstrated usefulness in the synthesis of a variety of other important, and often inaccessible by other techniques, materials such as quartz and zeolites. Hydro(methano)thermal conditions have been used to prepare some very interesting metal monochalcogenide compounds by using alkali carbonates as mineralizers. Using Se{sub x}{sup 2{minus}} as mineralizers, the authors have uncovered a new route to novel polychalcogenides. They report here the first hydrothermal synthesis of a metal polychalcogenide complex, the remarkable (Mo{sub 12}Se{sub 56}){sup 12{minus}} (I), possessing an extraordinary structure.
53 citations