Figure 4.

Cyclic voltammograms (A) and ⊥-mode EPR spectra (B) of [Co^IIMST(OH₂)]⁻ (black line) and [Co^II(μ-OH₂)Ca^IIOH₂]⁺ (gray line). Cobaltocenium (*) was used as an internal standard in the CV experiments. The voltammograms were recorded at room temperature in DCM (with 0.1 M TBAPF₆) and the EPR data were collected at 10 K on frozen DCM solution (6 mM). Inset: comparison of the hyperfine interactions for the two Co^II–aquo complexes. See Table 2 for E_1/2, g- and A_z-values.