Enthalpies of formation of acetyl radicals

The database on the enthalpies of formation (ΔfH○) of aliphatic acetyl radicals of the RC·(O) type is analyzed and extended. ΔfH○ values are estimated for the first time for three compounds on the basis of experimental data. The data were analyzed using the additive group approach with the determination and correction of parameters. Good correspondence between the ΔfH○(RC·(O)) values calculated according to parameters with experimental data is observed.