PrCr2O6 crystallizes in the monoclinic Pc space group. Pr(1) is bonded in a 12-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form corner-sharing CrO6 octahedra. The corner-sharing octahedral tilt angles range from 8-26°. In the second Cr site, Cr(2) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form corner-sharing CrO6 octahedra. The corner-sharing octahedral tilt angles range from 8-26°. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Pr(1), one Cr(1), and one Cr(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to two equivalent Pr(1), one Cr(1), and one Cr(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Pr(1), one Cr(1), and one Cr(2) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to two equivalent Pr(1), one Cr(1), and one Cr(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to two equivalent Pr(1), one Cr(1), and one Cr(2) atom. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to two equivalent Pr(1), one Cr(1), and one Cr(2) atom.
PrCr2O6 crystallizes in the monoclinic Pc space group. Pr(1) is bonded in a 12-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms. There is one shorter (2.51 Å) and one longer (2.86 Å) Pr(1)-O(1) bond length. There is one shorter (2.43 Å) and one longer (3.10 Å) Pr(1)-O(2) bond length. There is one shorter (2.44 Å) and one longer (3.09 Å) Pr(1)-O(3) bond length. There is one shorter (2.50 Å) and one longer (2.70 Å) Pr(1)-O(4) bond length. There is one shorter (2.51 Å) and one longer (2.70 Å) Pr(1)-O(5) bond length. There is one shorter (2.51 Å) and one longer (2.91 Å) Pr(1)-O(6) bond length. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form corner-sharing CrO6 octahedra. The corner-sharing octahedral tilt angles range from 8-26°. The Cr(1)-O(1) bond length is 1.85 Å. The Cr(1)-O(2) bond length is 1.80 Å. The Cr(1)-O(3) bond length is 1.99 Å. The Cr(1)-O(4) bond length is 2.03 Å. The Cr(1)-O(5) bond length is 1.81 Å. The Cr(1)-O(6) bond length is 1.90 Å. In the second Cr site, Cr(2) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form corner-sharing CrO6 octahedra. The corner-sharing octahedral tilt angles range from 8-26°. The Cr(2)-O(1) bond length is 1.97 Å. The Cr(2)-O(2) bond length is 1.99 Å. The Cr(2)-O(3) bond length is 1.80 Å. The Cr(2)-O(4) bond length is 1.85 Å. The Cr(2)-O(5) bond length is 2.06 Å. The Cr(2)-O(6) bond length is 1.94 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Pr(1), one Cr(1), and one Cr(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to two equivalent Pr(1), one Cr(1), and one Cr(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Pr(1), one Cr(1), and one Cr(2) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to two equivalent Pr(1), one Cr(1), and one Cr(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to two equivalent Pr(1), one Cr(1), and one Cr(2) atom. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to two equivalent Pr(1), one Cr(1), and one Cr(2) atom.