Pr(BiO3)2 crystallizes in the orthorhombic Pmn2_1 space group. Pr(1) is bonded in a 6-coordinate geometry to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms. Bi(1) is bonded to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing BiO6 octahedra. The corner-sharing octahedral tilt angles range from 22-41°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Pr(1) and two equivalent Bi(1) atoms. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Pr(1) and two equivalent Bi(1) atoms. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Pr(1) and two equivalent Bi(1) atoms. In the fourth O site, O(4) is bonded in a T-shaped geometry to one Pr(1) and two equivalent Bi(1) atoms.
Pr(BiO3)2 crystallizes in the orthorhombic Pmn2_1 space group. Pr(1) is bonded in a 6-coordinate geometry to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms. The Pr(1)-O(1) bond length is 2.38 Å. The Pr(1)-O(4) bond length is 2.44 Å. Both Pr(1)-O(2) bond lengths are 2.43 Å. Both Pr(1)-O(3) bond lengths are 2.52 Å. Bi(1) is bonded to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing BiO6 octahedra. The corner-sharing octahedral tilt angles range from 22-41°. The Bi(1)-O(1) bond length is 2.21 Å. The Bi(1)-O(4) bond length is 2.18 Å. There is one shorter (2.17 Å) and one longer (2.19 Å) Bi(1)-O(2) bond length. There is one shorter (2.20 Å) and one longer (2.24 Å) Bi(1)-O(3) bond length. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Pr(1) and two equivalent Bi(1) atoms. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Pr(1) and two equivalent Bi(1) atoms. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Pr(1) and two equivalent Bi(1) atoms. In the fourth O site, O(4) is bonded in a T-shaped geometry to one Pr(1) and two equivalent Bi(1) atoms.