Vanadium acetyl acetonate

Cu/Zn/X oxide catalysts were prepared by an oxalate-ethanol coprecipitation method. Ethanol solutions of nitrate of Cu, Zn and one additive were mixed (Cu/Zn/X molar ratio was 65/35/5), and then an ethanol solution of oxalic acid was mixed to precipitate the mixed oxalic salts. Only vanadium acetyl acetone was solved in a mixed solvent (acetone methanol =1 1), and it was used as V source. Ethanol was removed by vaporization followed by calcination in air at 623 K for 4 hours. 

The most spectacular coordination system free of termination and transfer was described recently by Doi et al.35. The homogeneous vanadium acetyl acetonate complex with AlEt2Cl rapidly initiated polymerization of propylene at - 60 °C. The molecular weight of the product increased with conversion and the ratio M /Mn was only slightly... 

Bi s (2,4-pentanedionato) oxovanadium (I V) [vanadium-(IV) oxy(acetylacetonate)] has been prepared by direct reaction of 2,4-pentanedione and vanadium(V) oxide. By using the same method, bis(4-imino-2-pentanonato)oxo-vanadium(IV) has been prepared by substituting acetyl-acetone imide (4-imino-2-pentanone) for acetylacetone. ... 

Tris. See Tris (hydroxymethyl) aminomethane Tris acetate. See Tris (hydroxymethyl) aminomethane acetate Tris (acetylacetonato) aluminum Tris (acetylacetonato) aluminum (III). See Aluminum acetylacetonate Tris (acetylacetonato) chromium (III). See Chromic acetylacetonate Tris (acetylacetonato) vanadium Tris (acetylacetonato) vanadium (III). See Vanadium tris acetyl acetonate Tris (acetylacetone) aluminum Tris (acetylacetonyl) aluminum. See Aluminum acetylacetonate... 

VAc. See Vinyl acetate VACAC. See Vanadium tris acetyl acetonate Vaccinium myrtillus Vaccinium myrtillus extract. See Bilberry (Vaccinium myrtillus) extract... 

Vanadium (III) acetylacetonate. See Vanadium tris acetyl acetonate... 

Vanadium (III) tris (acetylacetonate) Vanadium, tris (2,4-pentanedionato) Vanadium, tris (2,4-pentanedionato-0,0 -). See Vanadium tris acetyl acetonate Vanadocene dichloride. See Bis (cyclopentadienyl) vanadium dichloride Vanadous chloride. See Vanadium chloride (ous)... 

Vanadium tris acetyl acetonate CisH22BrNO Bromobutide C15H22CINO2 Metolachlor C15H22N2O2... 

Sodium-catalyzed polybutadienes contain a preponderance of 1,2-structures but since there are also significant quantities of other microstructures the products are not stereoregular. Since the discovery of the Ziegler-Natta catalyst systems both syndiotactic and isotactic 1,2-polybutadienes have been prepared. The syndiotactic polymers are obtained by the use of aluminium triethyl and halogen-free compounds of vanadium, molybdenum and cobalt, particularly the acetyl acetonates. 

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