Pd4PbAs3 crystallizes in the orthorhombic Imm2 space group. There are two inequivalent Pd sites. In the first Pd site, Pd(1) is bonded in a 10-coordinate geometry to one Pd(1), three equivalent Pd(2), one Pb(1), two equivalent As(1), and three equivalent As(2) atoms. In the second Pd site, Pd(2) is bonded in a 9-coordinate geometry to three equivalent Pd(1), two equivalent Pb(1), one As(1), and three equivalent As(2) atoms. Pb(1) is bonded in a 6-coordinate geometry to two equivalent Pd(1) and four equivalent Pd(2) atoms. There are two inequivalent As sites. In the first As site, As(1) is bonded in a 6-coordinate geometry to two equivalent Pd(2) and four equivalent Pd(1) atoms. In the second As site, As(2) is bonded in a 6-coordinate geometry to three equivalent Pd(1) and three equivalent Pd(2) atoms.
Pd4PbAs3 crystallizes in the orthorhombic Imm2 space group. There are two inequivalent Pd sites. In the first Pd site, Pd(1) is bonded in a 10-coordinate geometry to one Pd(1), three equivalent Pd(2), one Pb(1), two equivalent As(1), and three equivalent As(2) atoms. The Pd(1)-Pd(1) bond length is 3.01 Å. There is one shorter (2.81 Å) and two longer (3.04 Å) Pd(1)-Pd(2) bond lengths. The Pd(1)-Pb(1) bond length is 3.08 Å. Both Pd(1)-As(1) bond lengths are 2.58 Å. There is one shorter (2.62 Å) and two longer (2.68 Å) Pd(1)-As(2) bond lengths. In the second Pd site, Pd(2) is bonded in a 9-coordinate geometry to three equivalent Pd(1), two equivalent Pb(1), one As(1), and three equivalent As(2) atoms. Both Pd(2)-Pb(1) bond lengths are 3.03 Å. The Pd(2)-As(1) bond length is 2.47 Å. There is one shorter (2.57 Å) and two longer (2.65 Å) Pd(2)-As(2) bond lengths. Pb(1) is bonded in a 6-coordinate geometry to two equivalent Pd(1) and four equivalent Pd(2) atoms. There are two inequivalent As sites. In the first As site, As(1) is bonded in a 6-coordinate geometry to two equivalent Pd(2) and four equivalent Pd(1) atoms. In the second As site, As(2) is bonded in a 6-coordinate geometry to three equivalent Pd(1) and three equivalent Pd(2) atoms.