The rate of the self-exchange reaction of NiII cyclam2+/NiII cyclam3+ measured using 61Ni e.s.r. and a marcus cross correlation reaction

Abstract

The e.s.r. spectra of labelled [Ni^III1,4,8,11-tetra-azacyclotetradecane]³⁺(⁶¹Ni, I=) complexes have been used to determine the first rates of electron exchange between Ni^II- and Ni^III-tetra-azamacrocycle complexes; independent measurements based on the reaction of Fe^III(tris-polypyridine) complexes provide a more accurate value for the self-exchange parameter.