Rhenium complexes acetylacetonates

Raman spectroscopy metal in water complexes, 309 Rare earth complexes acetylacetone synthesis, 377 guanidinium, 282 hydroxamic acids, 506 Redox properties bipyridyl metal complexes, 90 Reductive coupling nitrile metal complexes, 265 Resorcinol, 2,4-dinitro-metal complexes, 273 Rhenium complexes acetylacetone, 376 synthesis, 375, 378... 

These complexes have been used as starting materials in the preparation of other alkoxy and phenoxy complexes, phenylimido complexes, analogous amine complexes, dioxotetrapyridinerhenium(V) salts and dioxobis(ethylene-diamine) rhenium (V) salts, cyano complexes of rhenium-(V), acetylacetone complexes, hydrides, carbonyls, and isonitrile complexes. The products of reactions using the materials described here as sources are normally easier to purify than those obtained by other methods. 

A 8chiff-base condensation reaction apparently results from treating the rhenium metalla-acetylacetone complex (7) with primary aromatic amines (Scheme 1). The tetracarbonylrhenium /3-diketone molecule (7) reacts with boron trihalides to give compounds (9). ... 

Reactions of the rhenium metalla-acetylacetone (28) with various reagents, summarized in Scheme 48, lead to several new compounds the copper complex is the first metalla-acetylacetonate complex of a transition metal. - The intramolecular geometrical isomerization of the cis- and fm/. r-isomers of [(OQ4-... 

The acetylacetonates are stable in air and readily soluble in organic solvents. From this standpoint, they have the advantage over the alkyls and other alkoxides, which, with the exception of the iron alkoxides, are not as easily soluble. They can be readily synthesized in the laboratory. Many are used extensively as catalysts and are readily available. They are also used in CVD in the deposition of metals such as iridium, scandium and rhenium and of compounds, such as the yttrium-barium-copper oxide complexes, used as superconductors. 1 1 PI Commercially available acetyl-acetonates are shown in Table 4.2. 

Acetylacetonato complexes of various composition have been reported as the products of reactions between acetylacetone (Hacac) and rhenium nitrosyl precursors. Compositions of [Re(NCpCl(acac)2(H20)] and [Re(N0)(acac)3(Hacac)(H20)2] have been assigned to the prod-... 

With other metal alkoxides, such as n(Ot-Pr)4 and Sn (Oi-Pr)4, Ru-1 induced faster polymerizations of MMA than Al(Ot-Pr)3, though the MWDs became slightly broader. Aluminum acetylacetonate [Al(acac)3] was a mild alternative additive that did not induce an ester-exchange reaction between the ester group and the monomer or monomer units in the polymer chain, which might occur using aluminum alkoxides. These metal alkoxides were also effective for other metal complexes, such as iron, nickel, rhenium, and copper. " It is noteworthy that Al(Oi-Pr)3 could even make the Cu(II) species active, in which the controlled polymerizations of styrene, MMA, and ethyl acrylate were possible." " Ti(Oi-Pr)4 was also efficient for the half-metallocene Fe(II)-catalyzed polymerizations, as will be mentioned in Seaion 3.13.3.1.2." Based on calculation studies by Poli et the nature of Al(Oi-Pr)3 in the... 

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