Substituent effects on the stabilities of phenoxyl radicals and the acidities of phenoxyl radical cations

摘要: Oxidation potentials for 35 phenoxide ions and 3 naphthoxide have been combined with their pK HA values to estimated homolytic bond dissociation energies (BDEs) the O-H bonds in phenols. Comparison literature shows that there is remarkably good agreement ΔBDE determined by different methods. A correlation of E ox (A − ) p-GC 6 H 4 O σ + constants was observed over a range greater than 40 kcal/mol. The acidities phenoxyl radical cations from , ), (HA) values. vs •+ m-GC OH cations, but points para donors were found deviate line