NaAlSe2 crystallizes in the tetragonal I4/mcm space group. Na(1) is bonded in a 8-coordinate geometry to eight equivalent Se(1) atoms. Al(1) is bonded to four equivalent Se(1) atoms to form edge-sharing AlSe4 tetrahedra. Se(1) is bonded in a 6-coordinate geometry to four equivalent Na(1) and two equivalent Al(1) atoms.
NaAlSe2 crystallizes in the tetragonal I4/mcm space group. Na(1) is bonded in a 8-coordinate geometry to eight equivalent Se(1) atoms. All Na(1)-Se(1) bond lengths are 3.25 Å. Al(1) is bonded to four equivalent Se(1) atoms to form edge-sharing AlSe4 tetrahedra. All Al(1)-Se(1) bond lengths are 2.41 Å. Se(1) is bonded in a 6-coordinate geometry to four equivalent Na(1) and two equivalent Al(1) atoms.