PrZn(CuO3)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. Cu(1) is bonded to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing CuO6 octahedra. The corner-sharing octahedral tilt angles range from 27-42°. Zn(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. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Pr(1), two equivalent Cu(1), and one Zn(1) atom. In the second O site, O(2) is bonded to one Pr(1), two equivalent Cu(1), and one Zn(1) atom to form a mixture of distorted corner and edge-sharing OPrZnCu2 trigonal pyramids. In the third O site, O(3) is bonded in a 5-coordinate geometry to two equivalent Pr(1), two equivalent Cu(1), and one Zn(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Pr(1), two equivalent Cu(1), and one Zn(1) atom.
PrZn(CuO3)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 2.35 Å. The Pr(1)-O(4) bond length is 2.48 Å. Both Pr(1)-O(2) bond lengths are 2.40 Å. There are two shorter (2.55 Å) and two longer (2.70 Å) Pr(1)-O(3) bond lengths. Cu(1) is bonded to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing CuO6 octahedra. The corner-sharing octahedral tilt angles range from 27-42°. The Cu(1)-O(1) bond length is 1.97 Å. The Cu(1)-O(4) bond length is 2.02 Å. There is one shorter (1.91 Å) and one longer (1.94 Å) Cu(1)-O(2) bond length. There is one shorter (1.98 Å) and one longer (1.99 Å) Cu(1)-O(3) bond length. Zn(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 Zn(1)-O(1) bond length is 2.20 Å. The Zn(1)-O(4) bond length is 2.07 Å. Both Zn(1)-O(2) bond lengths are 2.25 Å. Both Zn(1)-O(3) bond lengths are 2.18 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Pr(1), two equivalent Cu(1), and one Zn(1) atom. In the second O site, O(2) is bonded to one Pr(1), two equivalent Cu(1), and one Zn(1) atom to form a mixture of distorted corner and edge-sharing OPrZnCu2 trigonal pyramids. In the third O site, O(3) is bonded in a 5-coordinate geometry to two equivalent Pr(1), two equivalent Cu(1), and one Zn(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Pr(1), two equivalent Cu(1), and one Zn(1) atom.