Kinetic studies of the decomposition reaction of adducts of dinuclear Fe(Ⅱ)/O2 |
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摘 要: | Kinetic studies of the decomposition reaction of dinuclear Fe(Ⅱ) adducts Fe2(N-Et-HPTB){O2P(OPh)2}](Cl- O4)2 (1) and Fe2(N-Et-HPTB) {O2P(Ph)2}] (ClO4)2 (2) with O2 have been carried out at low temperature using UV-vis spectra. The decomposition reaction of Fe(Ⅱ)/O2 adducts was first-order in the experimental conditions, and the activation parameters were obtained. ?H¹ = 85.62 kJ·mol-1, ?S¹ = 19.43 J·mol-1·K-1 for compound (1) and ?H¹ = 97.97 kJ·mol-1, ?S¹ = 55.68 J·mol-1·K-1 for compound (2). These results are similar to those of dioxygen adducts of other metals complexes and natural enzymes such as methane mono- oxygenase (MMOH).
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收稿时间: | 2001-10-16 |
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