Figure 5.

Cyclic voltammogram of a 5 mM solution of ^tBu₃P and B(C₆F₅)₃ in CH₂Cl₂ solution, at a GCE, after being exposed to a 1 h sparge with H₂ (black line). Addition of authentic [ⁿBu₄N]1 (dotted line) to the sample confirms that the observed oxidation wave corresponds to the H₂-activated product. The cyclic voltammograms were taken in the presence of a Cp₂Fe internal reference at a voltage scan rate of 100 mV s^–1.