Th2AlH4 crystallizes in the tetragonal I4/mcm space group. Th(1) is bonded in a 8-coordinate geometry to four equivalent Al(1) and eight equivalent H(1) atoms. Al(1) is bonded in a 8-coordinate geometry to eight equivalent Th(1) atoms. H(1) is bonded to four equivalent Th(1) atoms to form a mixture of edge, face, and corner-sharing HTh4 tetrahedra.
Th2AlH4 crystallizes in the tetragonal I4/mcm space group. Th(1) is bonded in a 8-coordinate geometry to four equivalent Al(1) and eight equivalent H(1) atoms. All Th(1)-Al(1) bond lengths are 3.29 Å. There are a spread of Th(1)-H(1) bond distances ranging from 2.32-2.46 Å. Al(1) is bonded in a 8-coordinate geometry to eight equivalent Th(1) atoms. H(1) is bonded to four equivalent Th(1) atoms to form a mixture of edge, face, and corner-sharing HTh4 tetrahedra.