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KMID : 1059519900340040319
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Journal of the Korean Chemical Society
1990 Volume.34 No. 4 p.319 ~ p.324
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A Kinetic Study of the Substitution of β-Disketone in Bis(β-diketonato)Oxovanadium (Ⅳ)
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Howang Kyu-Tak
Kim Jung-Sung
Shin Han-Chul
Kim In-Whan
Kim Gi-Tae
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Abstract
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Kinetic of substitution of dibenzoylmethanate (dbm) for one acetylacetonate (acac) in VO (acac)2 have been studied in various solvents by spectrophotometry. Under the condition [VO (acac)2] 》[Hdbm], the rate law for the substitution reaction is expressed as, rate = k2K[VO(acac)2] [Hdbm] / (1 ＋ K[VO(acac)2]) where K = [VO (acac)2dbmH] / [VO(acac)2][Hdbm] and the rate constant k2 corresponds to that of proton transfer from coordinated Hdbm to leaving acac- in VO(acac)2dbmH.
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KEYWORD
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