Oxidation and reduction of diazofluorene. A pulse-radiolysis study

Abstract

In neutral solution the radical Me₂ĊOH reduces diazofluorene (FIN₂) to FIN₂H· with k 4.6 × 10⁸ dm³ mol^–1s^–1 and this N-protonated radical (ε 3 850 dm³ mol^–1 cm^–1) decays in a second-order reaction with 2K3.7 × 10⁸ dm³ mol^–1s^–1. FIN₂H· does not react with oxygen. In the presence of NaOH FIN₂^–. is formed and this radical is long lived but rapidly transfers an electron to oxygen and to p-nitroacetophenone. Trichloromethylperoxyl, Cl₃COO·, oxidises FIN₂ with K 1.2 × 10⁷ dm³ mol^–1s^–1.