PdAl is beta-prime palladium aluminum structured and crystallizes in the trigonal R-3 space group. There are three inequivalent Pd sites. In the first Pd site, Pd(1) is bonded in a 7-coordinate geometry to one Al(3), two equivalent Al(2), and four equivalent Al(1) atoms. In the second Pd site, Pd(2) is bonded in a 7-coordinate geometry to two equivalent Al(1) and five equivalent Al(2) atoms. In the third Pd site, Pd(3) is bonded in a body-centered cubic geometry to two equivalent Al(3) and six equivalent Al(1) atoms. There are three inequivalent Al sites. In the first Al site, Al(1) is bonded in a 7-coordinate geometry to one Pd(3), two equivalent Pd(2), and four equivalent Pd(1) atoms. In the second Al site, Al(2) is bonded in a 7-coordinate geometry to two equivalent Pd(1) and five equivalent Pd(2) atoms. In the third Al site, Al(3) is bonded in a body-centered cubic geometry to two equivalent Pd(3) and six equivalent Pd(1) atoms.
PdAl is beta-prime palladium aluminum structured and crystallizes in the trigonal R-3 space group. There are three inequivalent Pd sites. In the first Pd site, Pd(1) is bonded in a 7-coordinate geometry to one Al(3), two equivalent Al(2), and four equivalent Al(1) atoms. The Pd(1)-Al(3) bond length is 2.59 Å. Both Pd(1)-Al(2) bond lengths are 2.61 Å. There are a spread of Pd(1)-Al(1) bond distances ranging from 2.60-2.65 Å. In the second Pd site, Pd(2) is bonded in a 7-coordinate geometry to two equivalent Al(1) and five equivalent Al(2) atoms. There is one shorter (2.58 Å) and one longer (2.60 Å) Pd(2)-Al(1) bond length. There are a spread of Pd(2)-Al(2) bond distances ranging from 2.59-2.64 Å. In the third Pd site, Pd(3) is bonded in a body-centered cubic geometry to two equivalent Al(3) and six equivalent Al(1) atoms. Both Pd(3)-Al(3) bond lengths are 2.64 Å. All Pd(3)-Al(1) bond lengths are 2.61 Å. There are three inequivalent Al sites. In the first Al site, Al(1) is bonded in a 7-coordinate geometry to one Pd(3), two equivalent Pd(2), and four equivalent Pd(1) atoms. In the second Al site, Al(2) is bonded in a 7-coordinate geometry to two equivalent Pd(1) and five equivalent Pd(2) atoms. In the third Al site, Al(3) is bonded in a body-centered cubic geometry to two equivalent Pd(3) and six equivalent Pd(1) atoms.