Ba(AlTe2)2 crystallizes in the tetragonal P4/nbm space group. Ba(1) is bonded in a 8-coordinate geometry to eight equivalent Te(1) atoms. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded to four equivalent Te(1) atoms to form edge-sharing AlTe4 tetrahedra. In the second Al site, Al(2) is bonded to four equivalent Te(1) atoms to form edge-sharing AlTe4 tetrahedra. Te(1) is bonded to two equivalent Ba(1), one Al(1), and one Al(2) atom to form a mixture of distorted corner and edge-sharing TeBa2Al2 trigonal pyramids.
Ba(AlTe2)2 crystallizes in the tetragonal P4/nbm space group. Ba(1) is bonded in a 8-coordinate geometry to eight equivalent Te(1) atoms. All Ba(1)-Te(1) bond lengths are 3.66 Å. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded to four equivalent Te(1) atoms to form edge-sharing AlTe4 tetrahedra. All Al(1)-Te(1) bond lengths are 2.63 Å. In the second Al site, Al(2) is bonded to four equivalent Te(1) atoms to form edge-sharing AlTe4 tetrahedra. All Al(2)-Te(1) bond lengths are 2.64 Å. Te(1) is bonded to two equivalent Ba(1), one Al(1), and one Al(2) atom to form a mixture of distorted corner and edge-sharing TeBa2Al2 trigonal pyramids.