Enthalpies of formation of phenylaminyl radicals

Enthalpies of formation (ΔfH∘) for 31 radicals of the series of substituted Ph-N∙H and Ph-N∙-Ph were determined for the first time. The calculations were based on the dissociation energies of N-H bonds in the corresponding molecules and their ΔfH∘. A quantitative “structure—enthalpy of formation” correlation was established for these radicals within the framework of the additive-group approach. The ΔfH∘ of radicals were analyzed and the most reliable values were suggested.