Pd4Al3Si is beta-prime palladium aluminum-derived structured and crystallizes in the trigonal R3 space group. There are two inequivalent Pd sites. In the first Pd site, Pd(1) is bonded in a 7-coordinate geometry to six equivalent Al(1) and one Si(1) atom. In the second Pd site, Pd(2) is bonded in a 7-coordinate geometry to five equivalent Al(1) and two equivalent Si(1) atoms. Al(1) is bonded in a 7-coordinate geometry to two equivalent Pd(1) and five equivalent Pd(2) atoms. Si(1) is bonded in a 7-coordinate geometry to one Pd(1) and six equivalent Pd(2) atoms.
Pd4Al3Si is beta-prime palladium aluminum-derived structured and crystallizes in the trigonal R3 space group. There are two inequivalent Pd sites. In the first Pd site, Pd(1) is bonded in a 7-coordinate geometry to six equivalent Al(1) and one Si(1) atom. There are three shorter (2.59 Å) and three longer (2.63 Å) Pd(1)-Al(1) bond lengths. The Pd(1)-Si(1) bond length is 2.48 Å. In the second Pd site, Pd(2) is bonded in a 7-coordinate geometry to five equivalent Al(1) and two equivalent Si(1) atoms. There are a spread of Pd(2)-Al(1) bond distances ranging from 2.57-2.64 Å. There is one shorter (2.53 Å) and one longer (2.65 Å) Pd(2)-Si(1) bond length. Al(1) is bonded in a 7-coordinate geometry to two equivalent Pd(1) and five equivalent Pd(2) atoms. Si(1) is bonded in a 7-coordinate geometry to one Pd(1) and six equivalent Pd(2) atoms.