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.
Citations
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21 May 2020TL;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
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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
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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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TL;DR: Mo2(OAr)2(CH2SiMe3)4 (OAr = 2,6-dimethylphenoxide) undergoes the smooth loss of one equivalent of Me4Si in the presence of pyridine (py) to form an alkylidyne-hydride compound as discussed by the authors.
Abstract: The compound Mo2(OAr)2(CH2SiMe3)4(OAr = 2,6-dimethylphenoxide) undergoes the smooth loss of one equivalent of Me4Si in the presence of pyridine (py) to form an alkylidyne-hydride compound, Mo2(µ-H)(µ-CSiMe3)(CH2SiMe3)2(OAr)2(py)2; both compounds have been structurally characterised by X-ray crystallography.
3 citations
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TL;DR: The bimetallic complex [Mo(NO)(CO)2L] as discussed by the authors, which is a monomeric complex containing a 16-electron {Mo( NO)}4 moiety, can be oxidatively halogenated using iodine to give [Mo (NO)Ll2] which can be decomposed by alcohols or phenols.
Abstract: The bimetallic complex [Mo(NO)(CO)2L](L =[Co(η5-C5H5){P(O)(OEt)2}3]–) may be oxidatively halogenated using iodine to give [Mo(NO)Ll2] which is a monomeric complex containing a 16-electron {Mo(NO)}4 moiety. This di-iodide reacts with p-toluidine to give [Mo(NO)Ll(NHC6H4Me-p)] but is decomposed by alcohols or phenols. Reactions with the chelating ligands toluene-3,4-dithiol and 2-aminobenzenethiol afford [Mo(NO)L{SC6H3(Me)S}] and [Mo(NO)L(SC6H4NH)] respectively.
3 citations
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TL;DR: Spectroscopic evidence for low temperature intermediates, involving initial metal attack and carbonyl attack, in the nucleophilic addition of methoxide ions to [(η 7 -C 7 H 7 )M(CO) 3 ]BF (M = Mo, W).
3 citations
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TL;DR: In this paper, the authors showed that molybdenocene olefin complexes with heteroallenes XCY (X = O, S, N) have a dihapto-coordination via the C-X bond.
2 citations
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TL;DR: In this article, the authors showed that the inductive effects of the molybdenum-containing substituent are transmitted to equal extents through the CFe ǫ and Cǫ bridging atom chains.
2 citations