LaNi2Al5 crystallizes in the orthorhombic Immm space group. La(1) is bonded in a 18-coordinate geometry to four equivalent Ni(1), two equivalent Al(1), and twelve equivalent Al(2) atoms. Ni(1) is bonded in a 9-coordinate geometry to two equivalent La(1), one Al(1), and six equivalent Al(2) atoms. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a linear geometry to two equivalent La(1) and two equivalent Ni(1) atoms. In the second Al site, Al(2) is bonded in a distorted trigonal non-coplanar geometry to three equivalent La(1) and three equivalent Ni(1) atoms.
LaNi2Al5 crystallizes in the orthorhombic Immm space group. La(1) is bonded in a 18-coordinate geometry to four equivalent Ni(1), two equivalent Al(1), and twelve equivalent Al(2) atoms. All La(1)-Ni(1) bond lengths are 3.24 Å. Both La(1)-Al(1) bond lengths are 3.51 Å. There are eight shorter (3.34 Å) and four longer (3.53 Å) La(1)-Al(2) bond lengths. Ni(1) is bonded in a 9-coordinate geometry to two equivalent La(1), one Al(1), and six equivalent Al(2) atoms. The Ni(1)-Al(1) bond length is 2.27 Å. There are two shorter (2.40 Å) and four longer (2.51 Å) Ni(1)-Al(2) bond lengths. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a linear geometry to two equivalent La(1) and two equivalent Ni(1) atoms. In the second Al site, Al(2) is bonded in a distorted trigonal non-coplanar geometry to three equivalent La(1) and three equivalent Ni(1) atoms.