IUPAC definition : A term used to characterize radicals which have lifetimes of several minutes or greater
in dilute solution in inert solvents. Persistence is a kinetic or reactivity property.
In contrast, radical stability, which is a thermodynamic property, is expressed in
terms of the C–H bond strength of the appropriate hydrocarbon. The lifetime of a radical
is profoundly influenced by steric shielding of the radical centre by bulky substituents.;
A term used to characterize radicals which have lifetimes of several minutes or greater
in dilute solution in inert solvents. Persistence is a kinetic or reactivity property.
In contrast, radical stability, which is a thermodynamic property, is expressed in
terms of the C–H bond strength of the appropriate hydrocarbon. The lifetime of a radical
is profoundly influenced by steric shielding of the radical centre by bulky substituents.