Pr5Tl3 crystallizes in the tetragonal I4/mcm space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 6-coordinate geometry to two equivalent Tl(2) and four equivalent Tl(1) atoms. In the second Pr site, Pr(2) is bonded in a 6-coordinate geometry to two equivalent Pr(2) and four equivalent Tl(1) atoms. There are two inequivalent Tl sites. In the first Tl site, Tl(1) is bonded in a 10-coordinate geometry to two equivalent Pr(2) and eight equivalent Pr(1) atoms. In the second Tl site, Tl(2) is bonded in a 10-coordinate geometry to eight equivalent Pr(1) and two equivalent Tl(2) atoms.
Pr5Tl3 crystallizes in the tetragonal I4/mcm space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 6-coordinate geometry to two equivalent Tl(2) and four equivalent Tl(1) atoms. Both Pr(1)-Tl(2) bond lengths are 3.36 Å. There are a spread of Pr(1)-Tl(1) bond distances ranging from 3.30-3.66 Å. In the second Pr site, Pr(2) is bonded in a 6-coordinate geometry to two equivalent Pr(2) and four equivalent Tl(1) atoms. Both Pr(2)-Pr(2) bond lengths are 3.18 Å. All Pr(2)-Tl(1) bond lengths are 3.28 Å. There are two inequivalent Tl sites. In the first Tl site, Tl(1) is bonded in a 10-coordinate geometry to two equivalent Pr(2) and eight equivalent Pr(1) atoms. In the second Tl site, Tl(2) is bonded in a 10-coordinate geometry to eight equivalent Pr(1) and two equivalent Tl(2) atoms. Both Tl(2)-Tl(2) bond lengths are 3.18 Å.