Fig. 4. Cyclic voltammetry (CV) of [1⁻][K(18-crown-6)] (9.3 mM) (a) and 1-1 (3.4 mM) (b) in dry 0.1 M [nBu₄N][ClO₄]/THF solution obtained at 0.1 V s⁻¹ scan rate using glassy carbon electrodes, Pt wire, and Ag/Ag⁺ as the working, counter, and reference electrodes, respectively.