THERMODYNAMIC DATA FOR FREE RADICALS

BENSON s method allows AfH29g and 8 93 to be calculated, as well as Cp from 300 to 1500 K, mainly for molecules. As it happens, the data relating to radical groups are scarce (only about forty groups). BENSON developed a means of calculation based on 

This method consists of calculating the properties of a free radical R from those of the parent molecule RH by carrying out appropriate corrections. 

This technique consisting of estimating the thermodynamic data of a compound from those of a similar compound is also applicable to two molecules, but mainly to a molecule and an activated complex this last approach constitutes the thermochemical kinetics created by BENSON. 

---