Similarly, five equivalents of DG were added to a THF solution of precursor A and heated 30 minutes at 50 o C to generate white precipitate. The solvents were evaporated from the reaction flask to form more white precipitate. This white precipitate was re-dissolved in fresh, dry THF (scheme 1, path b), to form the solution referred to as electrolyte 2. This solution was then slowly vaporized to form crystals of compound 2. The molecular structure of compound 2 was confirmed by NMR spectroscopy (see figure and S4) and single x-ray crystallography (see figures 1b).