Bis(η2-ethene)(2,4-pentanedionato-O,O′)rhodium

Abstract

[12082-47-2] C9H15O2Rh (MW 258.12) InChI = 1S/C5H8O2.2C2H4.Rh/c1-4(6)3-5(2)7;2*1-2;/h3,6H,1-2H3;2*1-2H2;/q;;;+1/p-1/b4-3-;;; InChIKey = FLRBEQQDEGBCJS-FGSKAQBVSA-M (catalyst for the formation of C–C bonds. Also used in hydrogermylation, hydrosilylation, and oxidation reactions) Alternate Name: acetylacetonatobis(ethylene)rhodium(I), bis(η2-ethylene)(pentan-2,4-dionato-O,O′)rhodium, bis(η2-etilen) (pentano-2,4-dionato-O,O′)rodio, (acetylacetonato)bis (ethylene) rhodium, 2,4-pentanedionatobis(ethylene)rhodium, 2,4-pentanedionatobis(ethylene)rhodium(I), acetylacetonatobis (ethylene)rhodium(I), bis(ethylene)(2,4-pentanedionato)rhodium, bis (ethylene)rhodium(I) acetylacetonate, bis(ethylene)rhodium acetylacetonate, diethylene(acetylacetonato)rhodium, (2,4-pentanedionato)bis(ethylene)rhodium, bis(η2-ethene)(2,4-pentanedionato-O,O′)rhodium, bis(ethylene)(2,4-pentanedionato) rhodium, rhodium acetylacetonate, rhodium di(ethene)acetylacetonate, aceylacetonatorhodium. Physical Data: mp 144–146 °C (dec).1 Solubility: soluble in most organic solvents; insoluble in H2O.1 Form Supplied in: yellow to orange crystals, commercially available. Analysis of Reagent Purity: mp,1 IR.1 Preparative Methods: can be prepared by reaction of di-μ-chlorotetrakis(ethylene)dirhodium(I) and 2,4-pentanedione in diethyl ether with dropwise addition of KOH in water.1,2 Purification: recrystallization can be done from diethyl ether or methanol. Handling, Storage, and Precautions: store in a cool, dry place in a tightly sealed container. Handle and store under an inert atmosphere of nitrogen or argon. May cause mild to severe irritation of the eyes, skin, nose, mucous membrane, or respiratory tract. Avoid ingestion, inhalation, or direct contact with skin or clothing. The toxicological effects of this reagent have not been thoroughly tested, unknown hazards may be present. Chemical-safety goggles and appropriate gloves are highly recommended. Use only in a chemical fume hood and near safety shower and eye bath. Do not breathe dust. Disposal: dispose off according to the local, state, provincial, and federal guidelines relating to rhodium compounds and organometallic reagents. Small spills can be mixed with vermiculite, sodium carbonate, or other suitable non-combustible adsorbent and swept up. Compound is incompatible with oxidizing agents and active metals and decomposes to carbon dioxide, carbon monoxide, organic fumes, and rhodium salts.