https://doi.org/10.1351/goldbook.P04516
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.See also:
transient