WebJun 18, 2024 · Also, studies on para-X-substituted styrene epoxidation by an iron (IV)-oxo porphyrin cation radical gave linear trends of the free energy of activation against the substrate ionization potential. 94 The latter studies used a minimal model in the gas phase without substituents on the periphery. WebApr 16, 2024 · Radical Anions of Free-Base Tetraphenyl- and Tetrakis(pentafluorophenyl)porphyrins: Effect of Substituents on the Properties and …
Identification of a porphyrin pi cation radical in ascorbate
WebDec 4, 2024 · The oxo iron (IV) porphyrin π-radical cation is produced in the reaction of iron (III) porphyrin with hydrogen peroxide in the presence of ionic liquids. Since no epoxide was observed in the reaction, the reaction certainly proceeds via oxidation of 1 rather than oxygenation path. WebThe two-electron oxidation of TPO by H2O2 produces an oxoferryl porphyrin pi-cation radical compound I that isomerizes spontaneously to a form of compound I that contains an oxoferryl haem and the second oxidizing equivalent as an amino acid radical. 3. The pi-cation radical compound I is the catalytic species that effects iodide ion oxidation ... max asvg pension
Through Bridge Spin Coupling in Homo‐ and Heterobimetallic Porphyrin …
WebOxoiron (IV) porphyrin pi-cation radical complexes with a chameleon behavior in cytochrome P450 model reactions Authors Woon Ju Song 1 , Yon Ok Ryu , Rita Song , Wonwoo Nam Affiliation 1 Division of Nano Sciences, and Center for Biomimetic Systems, Department of Chemistry, Ewha Womans University, Seoul, 120-750, Korea. PMID: 15827730 WebJul 5, 2024 · The radical cations of a family of π-conjugated porphyrin arrays have been investigated: linear chains of N = 1–6 porphyrins, a 6-porphyrin nanoring and a 12-porphyrin nanotube. The radical cations were generated in solution by chemical and electrochemical oxidation, and probed by vis–NIR–IR and EPR spectroscopies. WebA series of oxoiron(IV) porphyrin cation radical complexes was investigated as compound I analogs of cytochrome P-450. Both the spectroscopic features and the reactivities of the … maxasiath.com