Iron -acetylacetonate

The oxidation reaction between butadiene and oxygen and water in the presence of CO2 or SO2 produces 1,4-butenediol. The catalysts consist of iron acetylacetonate and LiOH (99). The same reaction was also observed at 90°C with Group (VIII) transition metals such as Pd in the presence of I2 or iodides (100). The butenediol can then be hydrogenated to butanediol [110-63-4]. In the presence of copper compounds and at pH 2, hydrogenation leads to furan (101). 

In 2000, Sun and co-workers succeeded in synthesis of monodispersed Fe/Pt nanoparticles by the reduction of platinum acetylacetonate and decomposition of Fe(CO)5 in the presence of oleic acid and oleylamine stabilizers [18]. The Fe/Pt nanoparticle composition is readily controlled, and the size is tunable from 3 to 10 nm in diameter with a standard deviation of less than 5%. For practical use, we developed the novel symthetic method of FePt nanoparticles by the polyol reduction of platinum acetylacetonate (Pt(acac)2) and iron acetylacetonate (Fe(acac)3) in the presence of oleic acid and oleylamine stabilizers in di- -octylether [19,20]. The Fe contents in FePt nanoparticles can be tuned from 23 to 67atomic%, and the particle sizes are not significantly affected by the compositions, retaining to be 3.1 nm with a very narrow size distribution, as shown in Figure 6. 

Iron acetylacetonate catalyzed the introduction of a range of alkyl groups onto the carbazole nitrogen using the corresponding halides. A small yield of 9-(2-cyanoethyl)carbazole was obtained by light catalyzed addition of carbazole to acrylonitrile. ... 

Twenty-five years later, a dramatic improvement was reported by Fiandanese, Marchese and coworkers ° . They discovered that excellent yields of ketone were obtained when diethyl ether is replaced by THF. Moreover, iron acetylacetonate is used as a catalyst instead of iron(III) chloride because it is not hygroscopic and easier to handle. The scope of the procedure is very large and the reaction occurs highly chemoselectively under mild conditions (0 °C). It should be noted that excellent yields are obtained from stoichiometric amounts of Grignard reagents (Table 3). 

A mass spectrometric method was developed for quantifying stable iron isotope tracers present in blood and fecal samples. Volatile Iron acetylacetonate [Fe(6511702)3] was prepared. 

In thermal ionization mass spectrometry (TI-MS), solid, inorganic compounds may be volatilized from a heated surface. TI-MS is the most precise method for the measurement of isotopic ratios of minerals and has been used to analyze 58pe in fecal samples collected from a human study (H). The major drawbacks of this technique are the costly instrument and the slow sample through-put. Conventional mass spectrometry produces ions by electron bombardment of the vapor of volatile compoimds. This is called electron-impact ionization mass spectrometry (EI-MS). Analysis of iron by EI-MS requires derivitization to volatile forms before introduction into the mass spectrometer. A method has been developed for the synthesis of volatile iron-acetylacetone chelates from iron in blood serxm (1 ). A tetraphenylporphyrin chelate has also been synthesized and used in an absorption study in which 54pe and 57pe were given orally (16). 

The aim of this study was to further explore the potential and limitations of using stable iron isotopes as tracers and EI-MS in absorption studies. Procedures were developed for preparing iron acetylacetonate from both blood and fecal samples for mass spectrometric analysis. The precision and accuracy of ion abundance measurements were evaluated. In vivo use of stable iron isotope tracers was tested with a human study in which 54pe and 57pe were given orally and absorption was estimated with the fecal monitoring and hemoglobin incorporation methods. 

Figure 1. Mass spectrum of iron acetylacetonate Fe(C5H702)3 prepared from a unenriched iron standard. Spectra obtained for unenriched blood and fecal samples showed a similar pattern.

After ashing, the iron concentrations of these samples were determined by the Batho-reagent method. Iron acetylacetonate was then prepared and isotopic measurements of the samples were carried out along with the enriched standards. The amount... 

The Fe(acac)3-x species are unstable on this surface so that the characteristic spectrum of iron acetylacetonate is not observed but instead a Fe-OH species is observed indicating that the iron has been grafted to the surface of the zirconia. The tris-Fe +(acac)3 does not decompose completely on other surfaces, such as silica and titania, but rather it may loose 1-2 ligands upon contacting the surface. Thus, the intrinsic chemistry of the surface can have a significant effect upon the reactivity of the Fe(acac)3 towards that surface. Upon heating to 300°C in air all evidence of the (acac) ligands had disappeared. 

Some cyclopentadienyltitanium complexes react with FeClj or iron acetylacetonate with transfer of the cyclopentadienyl ligand from titanium to iron. The yield of ferrocene also depends on the other ligands on titanium. The yield increases with decreasing number of electron-attractive halogen atoms in the molecule (see Table IV). 

Thirty-five compounds and some binary mixtures of them (e.g. Fe, FeCls, NiO, LiCl, AcCl, AcOH) were examined as promoters for PdCl2 and PdPy2Cl2/Py for joint carbonylation of azobenzene and 4-CIC6H4NO2, 4-MeCeH4N02, and 3,4-Cl2C6H3N02. For example, iron and FeCU were active, but iron acetylacetonate suppressed the reaction [177]. 

The effect of salt additives on the structure of electrospun nanofibers is dependent on the actual spiiming solution used. As discussed above, the addition of ZnClj salt in PAN solution results in smaller diameter for the electrospun nanofibers. However, the addition of iron acetylacetonate (lAA) salt to the PAN solution in DMF does not lead to apparent change in the diameter of electrospun PAN nanofibers. The lAA salt also affects the solution viscosity, surface tension and conductivity by forming intermolecular interactions with PAN chains and DMF molecules. However, the changes in these solution properties are not so significant and the resultant nanofibers do not exhibit apparent diameter change. 

Du, J., and Zhang, X., Role of Polymer-Salt-Solvent Interactions in the electrospinning of Polyacrylonitrile/Iron Acetylacetonate , Journal of Applied Polymer Science, 109,2935-2941, 2008. 

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