We determined that the addition of 10 equiv. of DME to precursor C, followed by drying and redissolving the corresponding white powder in fresh dry THF, solution called (Figure ). Thereby, the effect of the interaction of the Mg2Cl36THF + cations with DME is relatively strong, leading to formation of complex MgCl + cations containing 2 DME molecules in their solvation shell. This complexation is strong, the Mg cations are hardly released from their cationic clusters in solution, leading to low CV currents and high overpotential for Mg deposition.