mainly because of the low content of aggressive chlorides in the counterions. The above-mentioned electrolyte solutions contain also MgCl2 salt as expected from the equilibrium reactions described in equations 1 and 2. Novel compounds, 1 2, 3, 4, and 5, were characterized by NMR spectroscopy and single x-ray crystallography. To our knowledge, these are the first mixed ligand coordinated compounds that were developed and examined in connection to Mg batteries' electrolyte solutions. Their solutions exhibited promising electrochemical activity (reversible Mg deposition and intercalation).