Pr5Ga3 crystallizes in the tetragonal P4/ncc space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 5-coordinate geometry to two equivalent Ga(2) and three equivalent Ga(1) atoms. In the second Pr site, Pr(2) is bonded to one Ga(2) and four equivalent Ga(1) atoms to form distorted corner-sharing PrGa5 square pyramids. There are two inequivalent Ga sites. In the first Ga site, Ga(2) is bonded in a 9-coordinate geometry to one Pr(2) and eight equivalent Pr(1) atoms. In the second Ga site, Ga(1) is bonded in a 9-coordinate geometry to two equivalent Pr(2), six equivalent Pr(1), and one Ga(1) atom.
Pr5Ga3 crystallizes in the tetragonal P4/ncc space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 5-coordinate geometry to two equivalent Ga(2) and three equivalent Ga(1) atoms. There is one shorter (3.22 Å) and one longer (3.40 Å) Pr(1)-Ga(2) bond length. There are a spread of Pr(1)-Ga(1) bond distances ranging from 3.12-3.25 Å. In the second Pr site, Pr(2) is bonded to one Ga(2) and four equivalent Ga(1) atoms to form distorted corner-sharing PrGa5 square pyramids. The Pr(2)-Ga(2) bond length is 3.11 Å. All Pr(2)-Ga(1) bond lengths are 3.21 Å. There are two inequivalent Ga sites. In the first Ga site, Ga(2) is bonded in a 9-coordinate geometry to one Pr(2) and eight equivalent Pr(1) atoms. In the second Ga site, Ga(1) is bonded in a 9-coordinate geometry to two equivalent Pr(2), six equivalent Pr(1), and one Ga(1) atom. The Ga(1)-Ga(1) bond length is 2.63 Å.