LaAl crystallizes in the orthorhombic Cmcm space group. La(1) is bonded in a 8-coordinate geometry to four equivalent Al(1) and four equivalent Al(2) atoms. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a distorted q6 geometry to eight equivalent La(1) and two equivalent Al(2) atoms. In the second Al site, Al(2) is bonded to eight equivalent La(1), two equivalent Al(1), and two equivalent Al(2) atoms to form a mixture of corner, edge, and face-sharing AlLa8Al4 cuboctahedra.
LaAl crystallizes in the orthorhombic Cmcm space group. La(1) is bonded in a 8-coordinate geometry to four equivalent Al(1) and four equivalent Al(2) atoms. There are a spread of La(1)-Al(1) bond distances ranging from 3.24-3.34 Å. There are two shorter (3.43 Å) and two longer (3.61 Å) La(1)-Al(2) bond lengths. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a distorted q6 geometry to eight equivalent La(1) and two equivalent Al(2) atoms. Both Al(1)-Al(2) bond lengths are 2.76 Å. In the second Al site, Al(2) is bonded to eight equivalent La(1), two equivalent Al(1), and two equivalent Al(2) atoms to form a mixture of corner, edge, and face-sharing AlLa8Al4 cuboctahedra. Both Al(2)-Al(2) bond lengths are 2.87 Å.