A Simple Method Based on NMR Spectroscopy and Ultramicroelectrode Voltammetry for the Determination of the Number of Electrons in Faradaic Processes

A new, convenient method to determine the number
of electrons (n) involved in a faradaic process was demonstrated
using a series of four compounds containing two, three, four,
and eight equivalent ferrocene centers. The method takes
advantage of pulse gradient stimulated echo (PGSE) NMR
spectroscopy to determine the diffusion coefficient (Do) of the
electroactive species. The value of n is subsequently determined
from the steady-state limiting current (iL) measured on a disk
ultramicroelectrode.