PrC2O7Br crystallizes in the monoclinic P2_1/c space group. Pr(1) is bonded in a 7-coordinate geometry to one O(3), one O(4), one O(5), one O(6), one O(7), and two equivalent O(1) atoms. There are two inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(3) atom. In the second C site, C(2) is bonded in a linear geometry to one O(2) and one O(4) atom. There are seven inequivalent O sites. In the first O site, O(5) is bonded in a distorted water-like geometry to one Pr(1) and one Br(1) atom. In the second O site, O(6) is bonded in a bent 120 degrees geometry to one Pr(1) and one Br(1) atom. In the third O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Pr(1) and one Br(1) atom. In the fourth O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Pr(1) and one C(1) atom. In the fifth O site, O(2) is bonded in a single-bond geometry to one C(2) atom. In the sixth O site, O(3) is bonded in a bent 120 degrees geometry to one Pr(1) and one C(1) atom. In the seventh O site, O(4) is bonded in a distorted single-bond geometry to one Pr(1) and one C(2) atom. Br(1) is bonded in a 3-coordinate geometry to one O(5), one O(6), and one O(7) atom.
PrC2O7Br crystallizes in the monoclinic P2_1/c space group. Pr(1) is bonded in a 7-coordinate geometry to one O(3), one O(4), one O(5), one O(6), one O(7), and two equivalent O(1) atoms. The Pr(1)-O(3) bond length is 2.50 Å. The Pr(1)-O(4) bond length is 2.89 Å. The Pr(1)-O(5) bond length is 2.28 Å. The Pr(1)-O(6) bond length is 2.31 Å. The Pr(1)-O(7) bond length is 2.37 Å. There is one shorter (2.52 Å) and one longer (2.65 Å) Pr(1)-O(1) bond length. There are two inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(3) atom. The C(1)-O(1) bond length is 1.28 Å. The C(1)-O(3) bond length is 1.25 Å. In the second C site, C(2) is bonded in a linear geometry to one O(2) and one O(4) atom. The C(2)-O(2) bond length is 1.17 Å. The C(2)-O(4) bond length is 1.18 Å. There are seven inequivalent O sites. In the first O site, O(5) is bonded in a distorted water-like geometry to one Pr(1) and one Br(1) atom. The O(5)-Br(1) bond length is 2.42 Å. In the second O site, O(6) is bonded in a bent 120 degrees geometry to one Pr(1) and one Br(1) atom. The O(6)-Br(1) bond length is 1.94 Å. In the third O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Pr(1) and one Br(1) atom. The O(7)-Br(1) bond length is 1.85 Å. In the fourth O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Pr(1) and one C(1) atom. In the fifth O site, O(2) is bonded in a single-bond geometry to one C(2) atom. In the sixth O site, O(3) is bonded in a bent 120 degrees geometry to one Pr(1) and one C(1) atom. In the seventh O site, O(4) is bonded in a distorted single-bond geometry to one Pr(1) and one C(2) atom. Br(1) is bonded in a 3-coordinate geometry to one O(5), one O(6), and one O(7) atom.