This study investigated how adding charged groups near a metal center that undergoes chemical reactions can affect the surrounding electric field, influencing the metal’s behavior and catalytic activity. We created various vanadium salen complexes each modified with a crown ether containing a redox-inactive metal cation (specifically Na, K, Ba, La, Ce, and Nd). We tested these complexes in different solvents and found that the reduction potential of vanadium(V/IV) shifted when there was a charged metal cation nearby, indicating changes in its behavior. However, in one solvent (N,N-dimethylformamide), the presence and charge of the metal cation did not affect the reduction potential. We also observed how adding N,N-dimethylformamide to acetonitrile shifted the reduction potential, suggesting a role of the solvent in the metal’s behavior. Additionally, We found that the crown complexes had stronger interactions with N,N-dimethylformamide as the cationic charge increased. The study also explored the behavior of other vanadium complexes without the crown structure. Overall, this research highlighted how solvent coordination and the presence of specific cations and anions can influence the chemical reactions and electric field in the studied systems.