Pr(SnO3)2 crystallizes in the orthorhombic Pmn2_1 space group. Pr(1) is bonded in a 8-coordinate geometry to one O(1), one O(4), two equivalent O(2), and four equivalent O(3) atoms. Sn(1) is bonded to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing SnO6 octahedra. The corner-sharing octahedral tilt angles range from 15-37°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Pr(1) and two equivalent Sn(1) atoms. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Pr(1) and two equivalent Sn(1) atoms. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Pr(1) and two equivalent Sn(1) atoms. In the fourth O site, O(4) is bonded in a T-shaped geometry to one Pr(1) and two equivalent Sn(1) atoms.
Pr(SnO3)2 crystallizes in the orthorhombic Pmn2_1 space group. Pr(1) is bonded in a 8-coordinate geometry to one O(1), one O(4), two equivalent O(2), and four equivalent O(3) atoms. The Pr(1)-O(1) bond length is 2.36 Å. The Pr(1)-O(4) bond length is 2.42 Å. Both Pr(1)-O(2) bond lengths are 2.42 Å. There are two shorter (2.57 Å) and two longer (2.80 Å) Pr(1)-O(3) bond lengths. Sn(1) is bonded to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing SnO6 octahedra. The corner-sharing octahedral tilt angles range from 15-37°. The Sn(1)-O(1) bond length is 2.07 Å. The Sn(1)-O(4) bond length is 2.07 Å. There is one shorter (2.04 Å) and one longer (2.05 Å) Sn(1)-O(2) bond length. There is one shorter (2.15 Å) and one longer (2.18 Å) Sn(1)-O(3) bond length. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Pr(1) and two equivalent Sn(1) atoms. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Pr(1) and two equivalent Sn(1) atoms. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Pr(1) and two equivalent Sn(1) atoms. In the fourth O site, O(4) is bonded in a T-shaped geometry to one Pr(1) and two equivalent Sn(1) atoms.