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}] (C1O4)2 (2) with O2 have been carried out at low temperature using UV-vi...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}] (C1O4)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. △H≠ = 85.62kJ·mol-1, △S≠ =19.43 J·mol-1·K-1 for compound (1) and △H≠=97.97 kJ·mol-1, △S≠ = 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).展开更多
Novel dinuclear iron (III) complex [Fe2(HPTB) 1μ-O2P(OPh)2 O2P(OPh)2 2] (C1O4)2, where HPTB is the anion of N, N, N′, N′-tetrakis(2-benzimidawlylmethyl)-2-hydroxy-1, 3-diaminopropane, was prepared in order to provi...Novel dinuclear iron (III) complex [Fe2(HPTB) 1μ-O2P(OPh)2 O2P(OPh)2 2] (C1O4)2, where HPTB is the anion of N, N, N′, N′-tetrakis(2-benzimidawlylmethyl)-2-hydroxy-1, 3-diaminopropane, was prepared in order to provide a model for the active site of purple acid phosphatase (PAP). This compound has been characterized by X-ray crystallography. Crystal data: triclinic, space group $P \bar 1$ ,a = 1. 512 13(5), b = 1. 591 19(5),c = 1.890 90(5) nm, α = 69.925(1)°,β = 84. 358(1)°,γ = 65.712(1)°, Z = 2. Dinuclear iron (II1) centers are bridged by aμ-OR group from HPTB, a bidentate bridging diphenylphosphate and two terminal diphenylphosphates coordinate to Fe(III) centers.展开更多
基金This work was supported by the National Natural Science Foundation of China (Grant Nos. 29771021 and 20171026) the Foundation of State Key Laboratory of Rare Material Chemistry and Application of Beijing University.
文摘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}] (C1O4)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. △H≠ = 85.62kJ·mol-1, △S≠ =19.43 J·mol-1·K-1 for compound (1) and △H≠=97.97 kJ·mol-1, △S≠ = 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).
文摘Novel dinuclear iron (III) complex [Fe2(HPTB) 1μ-O2P(OPh)2 O2P(OPh)2 2] (C1O4)2, where HPTB is the anion of N, N, N′, N′-tetrakis(2-benzimidawlylmethyl)-2-hydroxy-1, 3-diaminopropane, was prepared in order to provide a model for the active site of purple acid phosphatase (PAP). This compound has been characterized by X-ray crystallography. Crystal data: triclinic, space group $P \bar 1$ ,a = 1. 512 13(5), b = 1. 591 19(5),c = 1.890 90(5) nm, α = 69.925(1)°,β = 84. 358(1)°,γ = 65.712(1)°, Z = 2. Dinuclear iron (II1) centers are bridged by aμ-OR group from HPTB, a bidentate bridging diphenylphosphate and two terminal diphenylphosphates coordinate to Fe(III) centers.
