Al3Pd5 crystallizes in the orthorhombic Pbam space group. There are three inequivalent Pd sites. In the first Pd site, Pd(1) is bonded in a 6-coordinate geometry to two equivalent Al(1) and four equivalent Al(2) atoms. In the second Pd site, Pd(2) is bonded in a 6-coordinate geometry to two equivalent Al(1) and four equivalent Al(2) atoms. In the third Pd site, Pd(3) is bonded in a 5-coordinate geometry to one 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 body-centered cubic geometry to two equivalent Pd(2), two equivalent Pd(3), and four equivalent Pd(1) atoms. In the second Al site, Al(2) is bonded in a 10-coordinate geometry to two equivalent Pd(2), four equivalent Pd(1), and four equivalent Pd(3) atoms.
Al3Pd5 crystallizes in the orthorhombic Pbam space group. There are three inequivalent Pd sites. In the first Pd site, Pd(1) is bonded in a 6-coordinate geometry to two equivalent Al(1) and four equivalent Al(2) atoms. Both Pd(1)-Al(1) bond lengths are 2.52 Å. There are a spread of Pd(1)-Al(2) bond distances ranging from 2.59-2.84 Å. In the second Pd site, Pd(2) is bonded in a 6-coordinate geometry to two equivalent Al(1) and four equivalent Al(2) atoms. Both Pd(2)-Al(1) bond lengths are 2.69 Å. All Pd(2)-Al(2) bond lengths are 2.66 Å. In the third Pd site, Pd(3) is bonded in a 5-coordinate geometry to one Al(1) and four equivalent Al(2) atoms. The Pd(3)-Al(1) bond length is 2.50 Å. There are two shorter (2.59 Å) and two longer (2.79 Å) Pd(3)-Al(2) bond lengths. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a body-centered cubic geometry to two equivalent Pd(2), two equivalent Pd(3), and four equivalent Pd(1) atoms. In the second Al site, Al(2) is bonded in a 10-coordinate geometry to two equivalent Pd(2), four equivalent Pd(1), and four equivalent Pd(3) atoms.