Eight tetraalkylammonium tetraalkyborides have been prepared on a large scale from the corresponding tetraalkylammonium bromides and lithium tetraalkylborides. All melt at< 50, are miscible with most organic materials, and are sufficiently stable to heat, light, oxygen, and water to permit their use as solvents. Their completely filled valence shells of electrons prevent acid-base interactions with each other or with solutes, but their ionic character ...
