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Molybdenum compounds fluorides

Pentafluorocthyl iodide is of practical interest, particularly as a precursor of higher perfluoroal-kyl iodides. There are several patents for the preparation of the key compound from tetra-fluoroethene, iodine pentafluoride and iodine at 75-80 C in the presence of catalysts anti-mony(III) fluoride, titanium(lV) chloride, boron trifluoride, vanadium(V) fluoride, niobium(V) fluoride, and molybdenum(Vl) fluoride.11-13 The agents iodine monofluoride" and bromine monofluoride" can add to branched pcrfluoroalkcnes, e.g. perfluoro-2-methylbut-2-ene gives perfluoro-2-iodo-2-methylbutane.1415... [Pg.236]

Molybdenum(VI) fluoride will also25 convert R3P into R3PE2, and R2Si(OMe)2 and similar compounds into R2SiF2, etc.26... [Pg.680]

Molybdenum(VI) fluoride will insert into graphite to give8,29 nominal C5MoF6 and other compositions, and with fullerene C60 it forms30 an intercalation compound in which some oxidation process has occurred since the molybdenum exists as a molybdenum(V) fluoride species. [Pg.681]

Trifluoromethyl Compounds from Carboxylic Acids with Molybdenum(VI) Fluoride... [Pg.194]

Molybdenum(VI) fluoride which is a liquid at room temperature (bp 35 C) converts carboxylic acids into trifluoromethyl compounds (Table No halogen exchange takes place in... [Pg.194]

Molybdenum(VI) fluoride, which can be used for the synthesis of trifluoromethyl compounds from carboxylic acids (general procedure vick supra), converts ethyl acetate into 1.1.1-trifluoroethane. " ... [Pg.206]

Another type of demasking involves formation of new complexes or other compounds that are more stable than the masked species. For example, boric acid is used to demask fluoride complexes of tin(IV) and molybdenum(VI). Formaldehyde is often used to remove the masking action of cyanide ions by converting the masking agent to a nonreacting species through the reaction ... [Pg.1170]

The reactivity of fluorine compounds varies from extremely stable, eg, compounds such as sulfur hexafluoride [2551-62 ] nitrogen trifluoride [7783-54-2] and the perfluorocarbons (see Fluorine compounds, organic) to extremely reactive, eg, the halogen fluorides. Another unique property of nonionic metal fluorides is great volatiUty. Volatile compounds such as tungsten hexafluoride [7783-82-6] molybdenum hexafluoride [7783-77-9] ... [Pg.123]

SoHd lubricants ate added to help control high friction characteristics in high speed or heavy-duty appHcations where high temperatures are generated. Molybdenum disulfide [1317-33-5] M0S2, may be used alone or in a complex compound formed by grinding with fine natural graphite, and zinc sulfide [1314-98-3] ZnS. Other compounds include calcium fluoride, cryoHte [15096-52-3] Na AlF, rare-earth oxides, and metal sulfides, eg, iron, antimony, or zinc (see LUBRICATION AND LUBRICANTS). [Pg.274]

The CSD revealed only one example of the fluoride-bridged dimeric Zn2F2, analogous to the commonly observed unit for the other halides. The compound characterized by Roesky and co-workers is the only structure known with fluoride-bridged zinc atoms.646 Maggard et al. show a bridging fluoride between a molybdenum(V) and the zinc center in a coordination... [Pg.1202]

See other pages where Molybdenum compounds fluorides is mentioned: [Pg.362]    [Pg.683]    [Pg.78]    [Pg.205]    [Pg.965]    [Pg.205]    [Pg.205]    [Pg.759]    [Pg.15]    [Pg.320]    [Pg.357]    [Pg.643]    [Pg.1169]    [Pg.187]    [Pg.696]    [Pg.455]    [Pg.1438]    [Pg.1547]    [Pg.45]    [Pg.1593]    [Pg.1347]    [Pg.631]    [Pg.274]    [Pg.5]    [Pg.146]   


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Molybdenum compounds

Molybdenum fluoride

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