Pr5Ge3O13 crystallizes in the hexagonal P6_3/m space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 9-coordinate geometry to three equivalent O(1), three equivalent O(2), and three equivalent O(4) atoms. In the second Pr site, Pr(2) is bonded in a 7-coordinate geometry to one O(1), one O(3), one O(4), and four equivalent O(2) atoms. Ge(1) is bonded in a tetrahedral geometry to one O(1), one O(4), and two equivalent O(2) atoms. There are four inequivalent O sites. In the first O site, O(3) is bonded in a trigonal planar geometry to three equivalent Pr(2) atoms. In the second O site, O(4) is bonded in a 4-coordinate geometry to one Pr(2), two equivalent Pr(1), and one Ge(1) atom. In the third O site, O(1) is bonded in a 4-coordinate geometry to one Pr(2), two equivalent Pr(1), and one Ge(1) atom. In the fourth O site, O(2) is bonded in a 4-coordinate geometry to one Pr(1), two equivalent Pr(2), and one Ge(1) atom.
Pr5Ge3O13 crystallizes in the hexagonal P6_3/m space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 9-coordinate geometry to three equivalent O(1), three equivalent O(2), and three equivalent O(4) atoms. All Pr(1)-O(1) bond lengths are 2.46 Å. All Pr(1)-O(2) bond lengths are 2.84 Å. All Pr(1)-O(4) bond lengths are 2.54 Å. In the second Pr site, Pr(2) is bonded in a 7-coordinate geometry to one O(1), one O(3), one O(4), and four equivalent O(2) atoms. The Pr(2)-O(1) bond length is 2.74 Å. The Pr(2)-O(3) bond length is 2.33 Å. The Pr(2)-O(4) bond length is 2.50 Å. There are two shorter (2.43 Å) and two longer (2.59 Å) Pr(2)-O(2) bond lengths. Ge(1) is bonded in a tetrahedral geometry to one O(1), one O(4), and two equivalent O(2) atoms. The Ge(1)-O(1) bond length is 1.75 Å. The Ge(1)-O(4) bond length is 1.77 Å. Both Ge(1)-O(2) bond lengths are 1.77 Å. There are four inequivalent O sites. In the first O site, O(3) is bonded in a trigonal planar geometry to three equivalent Pr(2) atoms. In the second O site, O(4) is bonded in a 4-coordinate geometry to one Pr(2), two equivalent Pr(1), and one Ge(1) atom. In the third O site, O(1) is bonded in a 4-coordinate geometry to one Pr(2), two equivalent Pr(1), and one Ge(1) atom. In the fourth O site, O(2) is bonded in a 4-coordinate geometry to one Pr(1), two equivalent Pr(2), and one Ge(1) atom.