State-of-the-art electronic structure calculations provide the likelihood of the availability of YLi.sub.3N.sub.2, ZrLi.sub.3N.sub.2, NbLi.sub.3N.sub.2, MoLi.sub.3N.sub.2, TcLi.sub.3N.sub.2, RuLi.sub.3N.sub.2, RhLi.sub.3N.sub.2, GeLi.sub.3N.sub.2, InLi.sub.3N.sub.2, and SnLi.sub.3N.sub.2 as compounds for reaction with hydrogen under suitable conditions. Such calculations also provide the likelihood of the availability of YLi.sub.3N.sub.2H.sub.n, ZrLi.sub.3N.sub.2H.sub.n, NbLi.sub.3N.sub.2H.sub.n, MoLi.sub.3N.sub.2H.sub.n, TcLi.sub.3N.sub.2H.sub.n, RuLi.sub.3N.sub.2H.sub.n, RhLi.sub.3N.sub.2H.sub.n, PdLi.sub.3N.sub.2H.sub.n, AgLi.sub.3N.sub.2H.sub.n, CdLi.sub.3N.sub.2H.sub.n, AlLi.sub.3N.sub.2H.sub.n, GaLi.sub.3N.sub.2H.sub.n, GeLi.sub.3N.sub.2H.sub.n, InLi.sub.3N.sub.2H.sub.n, SnLi.sub.3N.sub.2H.sub.n, and SbLi.sub.3N.sub.2H, (here n is an integer having a value of 1-6) as solid hydrides for the storage of hydrogen. These materials offer utility for hydrogen storage systems.