Kinetic Study of the Reactions of Oxoiron(IV) with Aromatic Substrates in Aqueous Solutions

DANIEL O. MÁRTIRE; PAULA CAREGNATO; JORGE FURLONG; PATRICIA ALLEGRETTI; MÓNICA C. GONZALEZ

INTERNATIONAL JOURNAL OF CHEMICAL KINETICS

Wiley

Lugar: New York, USA; Año: 2002 vol. 34 p. 488 - 494

0538-8066

The kinetics of the reactions of oxoiron(IV) (FeO+2) with phenol, nitrobenzene, m-,o-, and p-nitrophenol in 1 M HClO4 was investigated by the stopped-flow technique. The rate constants of these reactions decrease with increasing the one-electron reduction potentials of the corresponding radical cations of the substrates and with the Hammett parameter of the NO2 group in the phenol ring. A reaction mechanism is proposed, which accounts for the observed trends and for the nature of the reaction products. winDirVariable="C:/WINDOWS"