Kinetics and mechanism of acetylacetonate transfer from acetylacetonatomanganese(III) to iron(III) in acetonitrile catalysis and inhibition effects

✍ Scribed by Roland Schmid; Valentin N. Sapunov

• Publisher: John Wiley and Sons
• Year: 1979
• Tongue: English
• Weight: 349 KB
• Volume: 11
• Category: Article
• ISSN: 0538-8066
• DOI: 10.1002/kin.550110102

✦ Synopsis

The reaction between tris(acetylacetonato)magnanese(III) and hexa(N,N-dimethylformamide)iron(III) perchlorate in acetonitrile proceeds in two stages. The first stage corresponds to the reaction of pentacoordinated Fe(DMF)Zt with Mn(acac),l, and the rate-determining step of the second stage consists mainly in the elimination of a DMF ligand from Fe(DMF)p to yield Fe(DMF)gt which reacts rapidly with the manganese complex. The formation of Fe(DMF)zt is catalyzed by Mn(acac)3, this catalytic effect being decreased by manganese products. The rate-determining step for the formation of Fe(acac)3 is the transfer of the first acetylacetonate to yield Fe(acac)2+. The final products of iron depend on the ratio of reactant concentrations. With Mn or Fe in excess, Fe(acac)3 or Fe(acac)2+ are mainly produced.