Kinetics and mechanisms of Fe(III) complexation by lipophilic 3-hydroxy-2-methyl-1(γ-stearoamidopropyl)-4-pyridinone (HMSP) (original) (raw)

JBIC Journal of Biological Inorganic Chemistry, 1997

Abstract

The kinetics of Fe(III) complexation by lipophilic 3-hydroxy-2-methyl-l(γ-stearoamidopropyl)-4-pyridinone (HMSP) were studied when [Fe(III)] > [HMSP] in MeOH/H2O mixed solvent and [Fe(III)] < [HMSP] in MeOH, respectively. When Fe(III) was in excess, the observed rate constants depend on [Fe(III)]2 tot and on the reciprocal of [H+] and decrease with increasing pressure. ΔV ‡ values are around +8.0 cm3 mol–1. A mechanism consisting

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