LiPr2(O2Br)2 crystallizes in the triclinic P1 space group. Li(1) is bonded in a distorted single-bond geometry to one O(1), one O(4), one Br(1), and two equivalent Br(2) atoms. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 6-coordinate geometry to one O(1), one O(3), two equivalent O(2), two equivalent O(4), one Br(1), and two equivalent Br(2) atoms. In the second Pr site, Pr(2) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(4), two equivalent O(3), one Br(2), and two equivalent Br(1) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Li(1), one Pr(1), and one Pr(2) atom. In the second O site, O(2) is bonded to one Pr(2), two equivalent Pr(1), and one O(4) atom to form distorted corner-sharing OPr3O tetrahedra. In the third O site, O(3) is bonded in a trigonal planar geometry to one Pr(1) and two equivalent Pr(2) atoms. In the fourth O site, O(4) is bonded in a distorted pentagonal planar geometry to one Li(1), one Pr(2), two equivalent Pr(1), and one O(2) atom. There are two inequivalent Br sites. In the first Br site, Br(1) is bonded in a 4-coordinate geometry to one Li(1), one Pr(1), and two equivalent Pr(2) atoms. In the second Br site, Br(2) is bonded in a 5-coordinate geometry to two equivalent Li(1), one Pr(2), and two equivalent Pr(1) atoms.
LiPr2(O2Br)2 crystallizes in the triclinic P1 space group. Li(1) is bonded in a distorted single-bond geometry to one O(1), one O(4), one Br(1), and two equivalent Br(2) atoms. The Li(1)-O(1) bond length is 1.92 Å. The Li(1)-O(4) bond length is 2.63 Å. The Li(1)-Br(1) bond length is 2.61 Å. There is one shorter (2.70 Å) and one longer (2.71 Å) Li(1)-Br(2) bond length. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 6-coordinate geometry to one O(1), one O(3), two equivalent O(2), two equivalent O(4), one Br(1), and two equivalent Br(2) atoms. The Pr(1)-O(1) bond length is 2.33 Å. The Pr(1)-O(3) bond length is 2.41 Å. There is one shorter (2.46 Å) and one longer (2.47 Å) Pr(1)-O(2) bond length. There is one shorter (2.44 Å) and one longer (2.46 Å) Pr(1)-O(4) bond length. The Pr(1)-Br(1) bond length is 3.13 Å. There is one shorter (3.31 Å) and one longer (3.49 Å) Pr(1)-Br(2) bond length. In the second Pr site, Pr(2) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(4), two equivalent O(3), one Br(2), and two equivalent Br(1) atoms. The Pr(2)-O(1) bond length is 2.29 Å. The Pr(2)-O(2) bond length is 2.52 Å. The Pr(2)-O(4) bond length is 2.55 Å. There is one shorter (2.33 Å) and one longer (2.37 Å) Pr(2)-O(3) bond length. The Pr(2)-Br(2) bond length is 3.14 Å. There is one shorter (3.34 Å) and one longer (3.35 Å) Pr(2)-Br(1) bond length. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Li(1), one Pr(1), and one Pr(2) atom. In the second O site, O(2) is bonded to one Pr(2), two equivalent Pr(1), and one O(4) atom to form distorted corner-sharing OPr3O tetrahedra. The O(2)-O(4) bond length is 1.49 Å. In the third O site, O(3) is bonded in a trigonal planar geometry to one Pr(1) and two equivalent Pr(2) atoms. In the fourth O site, O(4) is bonded in a distorted pentagonal planar geometry to one Li(1), one Pr(2), two equivalent Pr(1), and one O(2) atom. There are two inequivalent Br sites. In the first Br site, Br(1) is bonded in a 4-coordinate geometry to one Li(1), one Pr(1), and two equivalent Pr(2) atoms. In the second Br site, Br(2) is bonded in a 5-coordinate geometry to two equivalent Li(1), one Pr(2), and two equivalent Pr(1) atoms.