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Showing 1 to 13 of 13 for “"iron pentacarbonyl"”.
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Coal liquefaction enhancement through iron pentacarbonyl impregnation techniques
Includes bibliographical references.
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Gas phase production of single-walled carbon nanotubes
… generated in situ by thermal decomposition of iron pentacarbonyl. The yield of nanotubes and their diameter distribution can be varied by varying process parameters: nanotubes as small as 0.6 nm in diameter, corresponding to the size of a C60 molecule, have been generated. This process shows …
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The Sonochemistry of Some Metal Carbonyl Complexes (Iron, Chromium)
… to support sonochemical reactions. Sonication of iron pentacarbonyl, neat or in hydrocarbon solvents, produces triiron dodecacarbonyl and finely divided iron powder. The ratio of these products may be varied by changing the vapor pressure of the solvent. The mechanism for formation of triiron …
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Flame synthesis of carbon nanotubes and metallic nanomaterials
… flame is a high-temperature, carbon-rich environment and addition of metal is likely to give conditions suitable for nanotube growth. This study considered a premixed acetylene/oxygen/15 mol% argon flame doped with iron pentacarbonyl (Fe(CO)₅) vapor (typically 6100 ppm), operated at 50 Torr …
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SYNTHESIS OF ALL-CARBON SPIROCYCLES BY INTRAMOLECULAR IRON-MEDIATED DIENE/OLEFIN CYCLOCOUPLING
… triquinane skeleton by a combination of an iron-promoted tandem double ene-type cyclization followed by a ring contraction. The next logical step is to focus on using this methodology on all-carbon systems which will hopefully produce fused five-membered carbocyclic structures. Efforts were …
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Magnetic Nanoparticles Based on Iron: Synthesis, Characterization, Design, and Application
… This work has focused on three primary forms of iron based nanoparticles and combinations thereof: α-iron, iron oxide, and iron carbide or cementite. The synthesis of several core-shell particles including cementite-iron oxide, α-iron-cementite, and α-iron-iron oxide was accomplished through …
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Studies of oxime complexes
… copper(II) has been reinvestigated. Three new iron(II) complexes derived from these ligands have been prepared either by the reaction of PpoH with iron(II) under aqueous conditions or by the reaction of poH with iron pentacarbonyl in anhydrous THF. The latter reaction also afforded a number of …
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Catalysts for the Positional Isomerization of Internal, Long-Chain Olefins
… were 500 ppm of Fe(CO)5 at 180°C for 1-4 h. Iron pentacarbonyl was also immobilized on a functionalized PS-DVB. Iron carbonyls were detected on the surface, though it was unclear whether they were physisorbed or bonded to surface groups. The catalyzed reactions of octadecenes were slow with a …
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Iron nanoparticles and zirconium metal-organic frameworks for therapeutic application
… synthesised via the thermal decomposition of iron pentacarbonyl in the presence of oleylamine, polyvinylpyrrolidone, didodecyldimethylammonium bromide, oleic acid, or mixtures thereof. Use of single surfactants led to passive oxidation of the synthesised particles. However, deployment of a …
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Synthesis and characterization of magnetically hard Fe-Pt alloy nanoparticles and nano-islands
… prepared by thermal decomposition of iron pentacarbonyl [Fe(CO)5] have been widely investigated and by tuning the processing procedure monodispersed FePt nanoparticles with good assembly can be obtained. The as-made FePt nanoparticles are usually in the magnetically soft face-centered …
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Volatile metal borohydride complexes: synthesis and characterization of new chemical vapor deposition precursors
… thin films of hafnium diboride, HfB2, and iron metal from hafnium borohydride, Hf(BH4)4, and iron pentacarbonyl, Fe(CO)5, respectively. Microtrenches with aspect ratios greater than 10:1 were able to be completely infilled with HfB2 or iron and macrotrenches were able to be coated with thin …
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Ultrafast electron dynamics in Fe(CO)5 and Cr(CO)6
In this thesis, the two prototype catalysts Fe(CO)₅ and Cr(CO)₆ are investigated with time-resolved photoelectron spectroscopy at a high harmonic setup. In both of these metal carbonyls, a UV photon can induce the dissociation of one or more ligands of the complex. The mechanism of the dissociation …
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Regioselektive Synthese oxygenierter Carbazole
… Komplexierung ausgehend von Cyclohexadienen mit Pentacarbonyleisen hergestellt werden. Beide Methoden wurden gegenübergestellt und besonders hinsichtlich ihrer Ausbeuten und Syntheseeffizienz verglichen.