Tris(acetoacetonyl)cobalt

Abstract

[21679-46-9] C15H21CoO6 (MW 356.26) InChI = 1S/3C5H8O2.Co/c3*1-4(6)3-5(2)7;/h3*3,6H,1-2H3;/q;;;+3/p-3/b3*4-3-; InChIKey = RHCQEPWEBDOALW-LNTINUHCSA-K (catalyst for the formation of C–C bonds and oxidation reactions) Alternate Name: tris(acetylacetonyl)cobalt; tris(2,4-pentanedionato)cobalt(III); cobaltic acetylacetonate, tris(2,4-pentanedionato-O,O′)-cobalt, cobalt(III)-2,4-pentanedionate. Physical Data: 1 mp 213 °C; d 1.43 g cm−3. Solubility: soluble in most organic solvents; insoluble in H2O.1 Form Supplied in: dark green crystals, widely available. Analysis of Reagent Purity: mp,1 1H NMR,2 IR,2 VIS.2 Preparative Methods: reaction of CoCO3, H2O2, and acetylacetone.1 Purification: recrystallize from toluene and heptane.2 Handling, Storage, and Precautions: wear appropriate NIOSH/MSHA-approved respirator in non-ventilated areas and/or for exposure above the TLV. Chemical-safety goggles and long rubber or neoprene gauntlet gloves are also recommended. Use only in a chemical fume hood with a safety shower and eye bath available. Do not breathe dust. Avoid contact with eyes, skin, and clothing. Wash thoroughly after handling. Severe eye irritant, skin irritant, and irritating to mucous membranes and upper respiratory tract. Storage: avoid heat, sunlight, and strong oxidizing agents. Protect from metal. Store in a cool and dry place. Disposal: the material should either (i) be dissolved in water, (ii) be dissolved in acid solution, or (iii) oxidized to a water-soluble state. Precipitate the material as a sulfide, adjusting the pH of the solution to pH 7 to complete precipitation. Filter the insoluble material and dispose them off in a hazardous-waste site. Destroy any excess sulfide with sodium hypochlorite.