Pr(WO3)2 crystallizes in the triclinic P1 space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 8-coordinate geometry to one O(10), one O(11), one O(12), one O(2), one O(3), one O(4), one O(5), and one O(7) atom. In the second Pr site, Pr(2) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(11), one O(4), one O(5), one O(6), one O(8), and one O(9) atom. There are four inequivalent W sites. In the first W site, W(1) is bonded to one O(1), one O(10), one O(12), one O(2), one O(5), and one O(8) atom to form corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 18-31°. In the second W site, W(2) is bonded to one O(1), one O(11), one O(12), one O(3), one O(4), and one O(9) atom to form corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 19-31°. In the third W site, W(3) is bonded to one O(11), one O(3), one O(4), one O(6), one O(7), and one O(9) atom to form corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 19-31°. In the fourth W site, W(4) is bonded to one O(10), one O(2), one O(5), one O(6), one O(7), and one O(8) atom to form corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 18-31°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Pr(2), one W(1), and one W(2) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Pr(1), one W(1), and one W(4) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Pr(1), one W(2), and one W(3) atom. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Pr(1), one Pr(2), one W(2), and one W(3) atom. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Pr(1), one Pr(2), one W(1), and one W(4) atom. In the sixth O site, O(6) is bonded in a T-shaped geometry to one Pr(2), one W(3), and one W(4) atom. In the seventh O site, O(7) is bonded in a distorted T-shaped geometry to one Pr(1), one W(3), and one W(4) atom. In the eighth O site, O(8) is bonded in a distorted trigonal non-coplanar geometry to one Pr(2), one W(1), and one W(4) atom. In the ninth O site, O(9) is bonded in a distorted T-shaped geometry to one Pr(2), one W(2), and one W(3) atom. In the tenth O site, O(10) is bonded in a distorted rectangular see-saw-like geometry to one Pr(1), one Pr(2), one W(1), and one W(4) atom. In the eleventh O site, O(11) is bonded in a distorted rectangular see-saw-like geometry to one Pr(1), one Pr(2), one W(2), and one W(3) atom. In the twelfth O site, O(12) is bonded in a T-shaped geometry to one Pr(1), one W(1), and one W(2) atom.
Pr(WO3)2 crystallizes in the triclinic P1 space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 8-coordinate geometry to one O(10), one O(11), one O(12), one O(2), one O(3), one O(4), one O(5), and one O(7) atom. The Pr(1)-O(10) bond length is 2.75 Å. The Pr(1)-O(11) bond length is 2.80 Å. The Pr(1)-O(12) bond length is 2.47 Å. The Pr(1)-O(2) bond length is 2.44 Å. The Pr(1)-O(3) bond length is 2.40 Å. The Pr(1)-O(4) bond length is 2.62 Å. The Pr(1)-O(5) bond length is 2.65 Å. The Pr(1)-O(7) bond length is 2.37 Å. In the second Pr site, Pr(2) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(11), one O(4), one O(5), one O(6), one O(8), and one O(9) atom. The Pr(2)-O(1) bond length is 2.39 Å. The Pr(2)-O(10) bond length is 2.58 Å. The Pr(2)-O(11) bond length is 2.59 Å. The Pr(2)-O(4) bond length is 2.80 Å. The Pr(2)-O(5) bond length is 2.76 Å. The Pr(2)-O(6) bond length is 2.45 Å. The Pr(2)-O(8) bond length is 2.45 Å. The Pr(2)-O(9) bond length is 2.47 Å. There are four inequivalent W sites. In the first W site, W(1) is bonded to one O(1), one O(10), one O(12), one O(2), one O(5), and one O(8) atom to form corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 18-31°. The W(1)-O(1) bond length is 2.07 Å. The W(1)-O(10) bond length is 2.07 Å. The W(1)-O(12) bond length is 2.01 Å. The W(1)-O(2) bond length is 2.02 Å. The W(1)-O(5) bond length is 1.95 Å. The W(1)-O(8) bond length is 1.94 Å. In the second W site, W(2) is bonded to one O(1), one O(11), one O(12), one O(3), one O(4), and one O(9) atom to form corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 19-31°. The W(2)-O(1) bond length is 2.04 Å. The W(2)-O(11) bond length is 2.06 Å. The W(2)-O(12) bond length is 2.04 Å. The W(2)-O(3) bond length is 2.03 Å. The W(2)-O(4) bond length is 2.13 Å. The W(2)-O(9) bond length is 2.13 Å. In the third W site, W(3) is bonded to one O(11), one O(3), one O(4), one O(6), one O(7), and one O(9) atom to form corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 19-31°. The W(3)-O(11) bond length is 2.04 Å. The W(3)-O(3) bond length is 2.04 Å. The W(3)-O(4) bond length is 1.96 Å. The W(3)-O(6) bond length is 2.03 Å. The W(3)-O(7) bond length is 2.04 Å. The W(3)-O(9) bond length is 1.93 Å. In the fourth W site, W(4) is bonded to one O(10), one O(2), one O(5), one O(6), one O(7), and one O(8) atom to form corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 18-31°. The W(4)-O(10) bond length is 2.06 Å. The W(4)-O(2) bond length is 2.03 Å. The W(4)-O(5) bond length is 2.14 Å. The W(4)-O(6) bond length is 2.01 Å. The W(4)-O(7) bond length is 2.07 Å. The W(4)-O(8) bond length is 2.12 Å. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Pr(2), one W(1), and one W(2) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Pr(1), one W(1), and one W(4) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Pr(1), one W(2), and one W(3) atom. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Pr(1), one Pr(2), one W(2), and one W(3) atom. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Pr(1), one Pr(2), one W(1), and one W(4) atom. In the sixth O site, O(6) is bonded in a T-shaped geometry to one Pr(2), one W(3), and one W(4) atom. In the seventh O site, O(7) is bonded in a distorted T-shaped geometry to one Pr(1), one W(3), and one W(4) atom. In the eighth O site, O(8) is bonded in a distorted trigonal non-coplanar geometry to one Pr(2), one W(1), and one W(4) atom. In the ninth O site, O(9) is bonded in a distorted T-shaped geometry to one Pr(2), one W(2), and one W(3) atom. In the tenth O site, O(10) is bonded in a distorted rectangular see-saw-like geometry to one Pr(1), one Pr(2), one W(1), and one W(4) atom. In the eleventh O site, O(11) is bonded in a distorted rectangular see-saw-like geometry to one Pr(1), one Pr(2), one W(2), and one W(3) atom. In the twelfth O site, O(12) is bonded in a T-shaped geometry to one Pr(1), one W(1), and one W(2) atom.