Lithium borohydride absorbs anhydrous ammonia to form four stable ammoniates; LiACHTUNGTRENUNG(NH3)nBH4 mono-, di-, tri-, and tertraammoniate. This paper focuses on the monoammoniate, LiACHTUNGTRENUNG(NH3)BH4, which is readily formed on exposure of LiBH4 to ammonia at room temperature and pressure. Ammonia loss from LiACHTUNGTRENUNG(NH3)nBH4 ©2009.