assuming that one paramagnetic ion or nitroxyl amide pair is bonded per polymer block within the matrix when kappa = 1 , the anionic ligand 's average degree of polymerization ( [ unk ] ) can be estimated from the concentration of bonded paramagnetic dimers ( e.g. , [ 1/chi ] ( kappa approximately 1 ) = [ unk ] ; chi is the mole fraction of bonded paramagnetic dimers ) .
C0022023
ion
C0003075
anionic