NaAlH2 crystallizes in the tetragonal I4_1/amd space group. Na(1) is bonded to six equivalent H(1) atoms to form distorted edge-sharing NaH6 octahedra. Al(1) is bonded in a distorted rectangular see-saw-like geometry to four equivalent H(1) atoms. H(1) is bonded to three equivalent Na(1) and two equivalent Al(1) atoms to form a mixture of distorted corner and edge-sharing HNa3Al2 trigonal bipyramids.
NaAlH2 crystallizes in the tetragonal I4_1/amd space group. Na(1) is bonded to six equivalent H(1) atoms to form distorted edge-sharing NaH6 octahedra. There are two shorter (2.23 Å) and four longer (2.48 Å) Na(1)-H(1) bond lengths. Al(1) is bonded in a distorted rectangular see-saw-like geometry to four equivalent H(1) atoms. All Al(1)-H(1) bond lengths are 1.96 Å. H(1) is bonded to three equivalent Na(1) and two equivalent Al(1) atoms to form a mixture of distorted corner and edge-sharing HNa3Al2 trigonal bipyramids.