Pr5Bi3Br crystallizes in the hexagonal P6_3/mcm space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 7-coordinate geometry to five equivalent Bi(1) and two equivalent Br(1) atoms. In the second Pr site, Pr(2) is bonded in a 6-coordinate geometry to six equivalent Bi(1) atoms. Bi(1) is bonded in a 9-coordinate geometry to four equivalent Pr(2) and five equivalent Pr(1) atoms. Br(1) is bonded to six equivalent Pr(1) atoms to form face-sharing BrPr6 octahedra.
Pr5Bi3Br crystallizes in the hexagonal P6_3/mcm space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 7-coordinate geometry to five equivalent Bi(1) and two equivalent Br(1) atoms. There are three shorter (3.32 Å) and two longer (3.56 Å) Pr(1)-Bi(1) bond lengths. Both Pr(1)-Br(1) bond lengths are 3.15 Å. In the second Pr site, Pr(2) is bonded in a 6-coordinate geometry to six equivalent Bi(1) atoms. All Pr(2)-Bi(1) bond lengths are 3.46 Å. Bi(1) is bonded in a 9-coordinate geometry to four equivalent Pr(2) and five equivalent Pr(1) atoms. Br(1) is bonded to six equivalent Pr(1) atoms to form face-sharing BrPr6 octahedra.