C–N bond dissociation energies in some halogenated C-nitroso-compounds and in di-t-butyl nitroxide

Abstract

Measurements of the R–NO bond dissociation energy in some halogenated C-nitroso-compounds and in di-t-butyl nitroxide have been made using an electron impact method. The values obtained are: 31 kcal mol^–1 for D(CF₃–NO), 32 for D(CCl₃–NO), 62 for D(C₆F₅–NO), and 29 for D(Bu^tNO–Bu^t). These values are compared with bond dissociation energies in a range of other nitroso-compounds, and general relationships between structural parameters and bond dissociation energies are discussed. The anomalous value for D(C₆F₅–NO) is discussed.